package service

import (
	"context"
	"fmt"
	"net/url"
	"regexp"
	"strconv"
	"strings"

	"github.com/go-errors/errors"
	"github.com/oapi-codegen/nullable"
	"gopkg.in/yaml.v3"

	"github.com/google/uuid"
	"github.com/phishingclub/phishingclub/data"
	"github.com/phishingclub/phishingclub/errs"
	"github.com/phishingclub/phishingclub/model"
	"github.com/phishingclub/phishingclub/repository"
	"github.com/phishingclub/phishingclub/validate"
	"github.com/phishingclub/phishingclub/vo"
	"gorm.io/gorm"
)

// Proxy is a Proxy service
type Proxy struct {
	Common
	ProxyRepository         *repository.Proxy
	DomainRepository        *repository.Domain
	CampaignRepository      *repository.Campaign
	CampaignTemplateService *CampaignTemplate
	DomainService           *Domain
	ProxySessionManager     *ProxySessionManager
}

// ProxyServiceConfig represents the YAML configuration for proxy
type ProxyServiceConfig struct {
	Proxy  string             `yaml:"proxy,omitempty"`
	Global *ProxyServiceRules `yaml:"global,omitempty"`
}

// ProxyServiceDomainConfig represents configuration for a specific domain mapping
type ProxyServiceDomainConfig struct {
	To          string                       `yaml:"to"`
	Scheme      string                       `yaml:"scheme,omitempty"` // http or https (defaults to https)
	TLS         *ProxyServiceTLSConfig       `yaml:"tls,omitempty"`
	Access      *ProxyServiceAccessControl   `yaml:"access,omitempty"`
	Capture     []ProxyServiceCaptureRule    `yaml:"capture,omitempty"`
	Rewrite     []ProxyServiceReplaceRule    `yaml:"rewrite,omitempty"`
	Response    []ProxyServiceResponseRule   `yaml:"response,omitempty"`
	RewriteURLs []ProxyServiceURLRewriteRule `yaml:"rewrite_urls,omitempty"`
}

// ProxyServiceRules represents capture and replace rules
// ProxyServiceRules represents global rules that apply to all hosts
type ProxyServiceRules struct {
	TLS         *ProxyServiceTLSConfig         `yaml:"tls,omitempty"`
	Access      *ProxyServiceAccessControl     `yaml:"access,omitempty"`
	Impersonate *ProxyServiceImpersonateConfig `yaml:"impersonate,omitempty"`
	Variables   *ProxyServiceVariablesConfig   `yaml:"variables,omitempty"`
	Capture     []ProxyServiceCaptureRule      `yaml:"capture,omitempty"`
	Rewrite     []ProxyServiceReplaceRule      `yaml:"rewrite,omitempty"`
	Response    []ProxyServiceResponseRule     `yaml:"response,omitempty"`
	RewriteURLs []ProxyServiceURLRewriteRule   `yaml:"rewrite_urls,omitempty"`
}

// ProxyServiceTLSConfig represents TLS configuration for proxy domains
// TLS modes:
// - "managed": Use Let's Encrypt for automatic certificate management (DEFAULT)
// - "self-signed": Use automatically generated self-signed certificates
// - "custom": Use a manually supplied certificate (key + pem)
//
// Configuration can be set globally and overridden per-host:
//
//	global:
//	  tls:
//	    mode: "managed"
//	example.com:
//	  to: "phishing.com"
//	  tls:
//	    mode: "self-signed"  # override global setting
type ProxyServiceTLSConfig struct {
	Mode string `yaml:"mode"` // "managed" | "self-signed" | "custom"
}

// ProxyServiceImpersonateConfig represents client impersonation configuration
type ProxyServiceImpersonateConfig struct {
	Enabled  bool `yaml:"enabled"`   // enable surf browser impersonation based on ja4 fingerprint
	RetainUA bool `yaml:"retain_ua"` // retain client's original user-agent instead of using surf's impersonated one
}

// ProxyServiceAccessControl represents access control configuration
type ProxyServiceAccessControl struct {
	Mode   string `yaml:"mode"`              // "public" | "private"
	OnDeny string `yaml:"on_deny,omitempty"` // "404" | "redirect:URL" | status code (only used for private mode)
}

// ProxyServiceVariablesConfig represents template variable interpolation configuration
// when enabled, template variables like {{.Email}} in rewrite rules will be replaced with recipient data
//
// available variables:
// - recipient fields: rID, FirstName, LastName, Email, To, Phone, ExtraIdentifier, Position, Department, City, Country, Misc
// - sender fields: From, FromName, FromEmail, Subject
// - general fields: BaseURL, URL
// - custom fields: CustomField1, CustomField2, CustomField3, CustomField4
//
// example usage:
//
//	global:
//	  variables:
//	    enabled: true
//	    allowed: ["Email", "FirstName", "LastName"]  # optional: restrict to specific variables
//	  rewrite:
//	    - find: "PLACEHOLDER_EMAIL"
//	      replace: "{{.Email}}"
type ProxyServiceVariablesConfig struct {
	Enabled bool     `yaml:"enabled"`           // enable template variable interpolation in rewrite rules
	Allowed []string `yaml:"allowed,omitempty"` // if empty and enabled, all variables are allowed; if set, only these variables can be used
}

// ValidProxyVariables defines all valid template variable names that can be used in proxy rewrite rules
var ValidProxyVariables = map[string]bool{
	// recipient fields
	"rID":             true,
	"FirstName":       true,
	"LastName":        true,
	"Email":           true,
	"To":              true,
	"Phone":           true,
	"ExtraIdentifier": true,
	"Position":        true,
	"Department":      true,
	"City":            true,
	"Country":         true,
	"Misc":            true,
	// sender fields
	"From":      true,
	"FromName":  true,
	"FromEmail": true,
	"Subject":   true,
	// general fields
	"BaseURL": true,
	"URL":     true,
	// custom fields
	"CustomField1": true,
	"CustomField2": true,
	"CustomField3": true,
	"CustomField4": true,
}

// GetValidProxyVariableNames returns a slice of all valid proxy variable names
func GetValidProxyVariableNames() []string {
	names := make([]string, 0, len(ValidProxyVariables))
	for name := range ValidProxyVariables {
		names = append(names, name)
	}
	return names
}

// Access control modes:
// - "public": Allow all traffic (traditional proxy mode) - on_deny is ignored
// - "private": Strict IP-based mode like evilginx2 - whitelist IP after lure access, deny all others (DEFAULT)

// CompilePathPatterns compiles regex patterns for all capture, response, and rewrite rules
func CompilePathPatterns(config *ProxyServiceConfigYAML) error {
	// Compile global capture rule patterns
	if config.Global != nil && config.Global.Capture != nil {
		for i := range config.Global.Capture {
			if err := compileCapturePath(&config.Global.Capture[i]); err != nil {
				return err
			}
		}
	}

	// Compile global response rule patterns
	if config.Global != nil && config.Global.Response != nil {
		for i := range config.Global.Response {
			if err := compileResponsePath(&config.Global.Response[i]); err != nil {
				return err
			}
		}
	}

	// Compile global rewrite rule patterns
	if config.Global != nil && config.Global.Rewrite != nil {
		for i := range config.Global.Rewrite {
			if err := compileRewritePath(&config.Global.Rewrite[i]); err != nil {
				return err
			}
		}
	}

	// Compile host-specific capture rule patterns
	for _, hostConfig := range config.Hosts {
		if hostConfig != nil && hostConfig.Capture != nil {
			for i := range hostConfig.Capture {
				if err := compileCapturePath(&hostConfig.Capture[i]); err != nil {
					return err
				}
			}
		}
	}

	// Compile host-specific response rule patterns
	for _, hostConfig := range config.Hosts {
		if hostConfig != nil && hostConfig.Response != nil {
			for i := range hostConfig.Response {
				if err := compileResponsePath(&hostConfig.Response[i]); err != nil {
					return err
				}
			}
		}
	}

	// Compile host-specific rewrite rule patterns
	for _, hostConfig := range config.Hosts {
		if hostConfig != nil && hostConfig.Rewrite != nil {
			for i := range hostConfig.Rewrite {
				if err := compileRewritePath(&hostConfig.Rewrite[i]); err != nil {
					return err
				}
			}
		}
	}

	return nil
}

// compileRewritePath compiles the path pattern for a rewrite rule
func compileRewritePath(rule *ProxyServiceReplaceRule) error {
	if rule.Path != "" {
		pathRe, err := regexp.Compile(rule.Path)
		if err != nil {
			return fmt.Errorf("invalid regex pattern for rewrite path '%s': %w", rule.Path, err)
		}
		rule.PathRe = pathRe
	}
	return nil
}

// compileResponsePath compiles the path pattern for a response rule
func compileResponsePath(rule *ProxyServiceResponseRule) error {
	if rule.Path != "" {
		pathRe, err := regexp.Compile(rule.Path)
		if err != nil {
			return fmt.Errorf("invalid regex pattern for response path '%s': %w", rule.Path, err)
		}
		rule.PathRe = pathRe
	}
	return nil
}

// compileCapturePath compiles the path pattern for a capture rule
func compileCapturePath(rule *ProxyServiceCaptureRule) error {
	if rule.Path != "" {
		pathRe, err := regexp.Compile(rule.Path)
		if err != nil {
			return fmt.Errorf("invalid regex pattern for path '%s': %w", rule.Path, err)
		}
		rule.PathRe = pathRe
	}
	return nil
}

// ProxyServiceCaptureRule represents a capture rule
type ProxyServiceCaptureRule struct {
	Name     string         `yaml:"name"`
	Method   string         `yaml:"method,omitempty"`
	Path     string         `yaml:"path,omitempty"`
	Find     interface{}    `yaml:"find,omitempty"` // can be string or []string
	Engine   string         `yaml:"engine,omitempty"`
	From     string         `yaml:"from,omitempty"`
	Required *bool          `yaml:"required,omitempty"`
	Event    string         `yaml:"event,omitempty"` // "submit" (default) or "info"
	PathRe   *regexp.Regexp `yaml:"-"`               // compiled regex for path matching
}

// GetFindAsStrings returns find field as a slice of strings
func (c *ProxyServiceCaptureRule) GetFindAsStrings() []string {
	if c.Find == nil {
		return []string{}
	}

	switch v := c.Find.(type) {
	case string:
		return []string{v}
	case []interface{}:
		result := make([]string, 0, len(v))
		for _, item := range v {
			if str, ok := item.(string); ok {
				result = append(result, str)
			}
		}
		return result
	case []string:
		return v
	default:
		return []string{}
	}
}

// GetFindAsString returns the first find value as a string
func (c *ProxyServiceCaptureRule) GetFindAsString() string {
	finds := c.GetFindAsStrings()
	if len(finds) > 0 {
		return finds[0]
	}
	return ""
}

// ProxyServiceReplaceRule represents a replacement rule
type ProxyServiceReplaceRule struct {
	Name    string         `yaml:"name,omitempty"`
	Engine  string         `yaml:"engine,omitempty"`  // "regex" (default), "dom", or "header"
	Find    string         `yaml:"find,omitempty"`    // regex pattern (regex engine), css selector (dom engine), or header name (header engine)
	Replace string         `yaml:"replace,omitempty"` // replacement value (regex/dom), or new header value (header engine set/add actions)
	Action  string         `yaml:"action,omitempty"`  // dom: setText, setHtml, setAttr, removeAttr, addClass, removeClass, remove — header: set, add, remove
	Target  string         `yaml:"target,omitempty"`  // target matching for dom engine: "first", "last", "all" (default), "1,3,5", "2-4"
	From    string         `yaml:"from,omitempty"`    // request_header, request_body, response_header, response_body, any
	Path    string         `yaml:"path,omitempty"`    // regex pattern to restrict rule to matching request paths
	Method  string         `yaml:"method,omitempty"`  // restrict rule to this HTTP method (e.g. GET, POST)
	PathRe  *regexp.Regexp `yaml:"-"`                 // compiled regex for path matching
}

// ProxyServiceURLRewriteRule represents a URL rewrite rule for anti-detection
type ProxyServiceURLRewriteRule struct {
	Find    string                             `yaml:"find"`    // regex pattern to match path
	Replace string                             `yaml:"replace"` // replacement path
	Query   []ProxyServiceURLRewriteQueryParam `yaml:"query,omitempty"`
	Filter  []string                           `yaml:"filter,omitempty"` // query parameters to keep (if empty, keep all)
}

// ProxyServiceURLRewriteQueryParam represents query parameter mapping
type ProxyServiceURLRewriteQueryParam struct {
	Find    string `yaml:"find"`    // original parameter name
	Replace string `yaml:"replace"` // new parameter name
}

// ProxyServiceResponseRule represents a response rule that allows custom responses for specific paths
//
// COMPLETE PROCESSING ORDER & PRECEDENCE:
// The proxy processes rules in this exact order:
//
// REQUEST PROCESSING:
// 1. Response rules (FIRST) - can short-circuit everything
// 2. Session creation/loading (SECOND) - creates session ID internally
// 3. Access control (THIRD) - can block forwarding (uses session existence)
// 4. Capture rules on request (headers, body, cookies)
// 5. Rewrite rules on request (URL params, body patching)
// 6. Request forwarded to target server
//
// RESPONSE PROCESSING:
// 7. Session cookie setting (for new sessions) - cookie sent to client
// 8. Capture rules on response (headers, body, cookies)
// 9. Rewrite rules on response (headers, body, URL replacement)
// 10. Final response returned to client
//
// PRECEDENCE RULES:
// - Response rules with forward: false → skip ALL other processing
// - Response rules with forward: true → capture/rewrite still apply
// - Session created before access control (affects hasSession logic)
// - Access control can block forwarding even with pending response
// - Cookie only set in response phase (not during session creation)
// - Capture rules always run (unless response rule short-circuits)
// - Rewrite rules always run (unless response rule short-circuits)
//
// PRACTICAL EXAMPLES:
//
// Example 1 - Fake API endpoint (response rule wins, bypasses everything):
//
//	response:
//	  - path: "^/api/status$"
//	    body: '{"status": "ok"}'
//	    forward: false
//	access:
//	  mode: "deny"
//	  paths: ["^/api/status$"]
//	capture:
//	  - name: "api_data"
//	    path: "^/api/status$"
//	Result: Returns {"status": "ok"} immediately, no access control, no capture, no forwarding
//
// Example 2 - Monitor + fake response (response + access rules apply):
//
//	response:
//	  - path: "^/api/status$"
//	    body: '{"status": "ok"}'
//	    forward: true
//	access:
//	  mode: "deny"
//	  paths: ["^/api/status$"]
//	capture:
//	  - name: "api_data"
//	    path: "^/api/status$"
//	Result: Creates session → captures request data → returns {"status": "ok"} → sets cookie → NOT forwarded (access blocks it)
//
// Example 3 - Full pipeline (all rules apply):
//
//	response:
//	  - path: "^/api/status$"
//	    body: '{"status": "ok"}'
//	    forward: true
//	access:
//	  mode: "allow"
//	  paths: ["^/api/"]
//	capture:
//	  - name: "api_data"
//	    path: "^/api/status$"
//	rewrite:
//	  - find: "original.com"
//	    replace: "phishing.com"
//	Result: Creates session → captures data → rewrites content → forwards to target → captures response → sets cookie → ignores custom response
//
// RESPONSE RULE FEATURES:
// - forward: false (default) → replace normal proxy behavior
// - forward: true → provide response while still attempting to forward
// - Body content is used as-is (plain text/HTML/JSON/etc.)
type ProxyServiceResponseRule struct {
	Path    string            `yaml:"path"`    // regex pattern for request path
	Status  int               `yaml:"status"`  // HTTP status code (default: 200)
	Headers map[string]string `yaml:"headers"` // response headers to set
	Body    string            `yaml:"body"`    // response body content (supports template variables)
	Forward bool              `yaml:"forward"` // whether to also forward requesto target (default: false)
	PathRe  *regexp.Regexp    `yaml:"-"`       // compiled regex for path matching
}

// ProxyServiceConfigYAML represents the complete YAML configuration structure that matches the actual YAML format
//
// Example YAML configuration with access control and response rules:
//
// version: "0.0"
// global:
//
//	# No access section = private mode by default (secure by default)
//	capture:
//	  - name: "global_navigation"
//	    path: "/important"
//	response:
//	  - path: "^/favicon\\.ico$"
//	    headers:
//	      Content-Type: "image/x-icon"
//	    body: "base64:AAABAAEAEBAAAAEAIABoBAAAFgAAACgAAAAQAAAAIAAAAAEAIAAAAAAAAAQAAA=="
//	    forward: false
//
// example.com:
//
//	to: "phishing-example.com"
//	# No access section = private mode by default (secure by default)
//	# To override with public mode or custom deny action:
//	# access:
//	#   mode: "public"                   # Traditional proxy mode
//	# Or:
//	# access:
//	#   mode: "private"
//	#   on_deny: "https://example.com"   # Clean redirect syntax
//	response:
//	  - path: "^/robots\\.txt$"
//	    headers:
//	      Content-Type: "text/plain"
//	    body: |
//	      User-agent: *
//	      Disallow: /
//	    forward: false
//	  - path: "^/api/health$"
//	    headers:
//	      Content-Type: "application/json"
//	    body: '{"status": "ok", "timestamp": "{{timestamp}}"}'
//	    forward: true
//	capture:
//	  - name: "login_capture"
//	    method: "POST"
//	    path: "/login"
//	    find: "password=(.*?)&"
//	    from: "request_body"
//
// Example proxy configuration with client impersonation:
//
//	version: "0.0"
//	proxy: "proxy.example.com:8080"  # optional upstream proxy
//	global:
//	  tls:
//	    mode: "managed"
//	  impersonate:
//	    enabled: true       # enable surf browser impersonation (default: false)
//	    retain_ua: false    # retain client's original user-agent (default: false)
//	example.com:
//	  to: "target.com"
//
// When impersonate.enabled is true, the proxy will:
// - capture the client's ja4 tls fingerprint
// - detect the client's browser (chrome, firefox, safari, edge) and platform (windows, macos, linux, android, ios)
// - use surf library to replicate the exact tls fingerprint, http/2 settings, and header ordering
// - this makes proxied requests appear identical to the original client's browser
// When impersonate.retain_ua is true, the original client user-agent is preserved instead of using surf's impersonated one
type ProxyServiceConfigYAML struct {
	Version string                               `yaml:"version,omitempty"`
	Proxy   string                               `yaml:"proxy,omitempty"`
	Global  *ProxyServiceRules                   `yaml:"global,omitempty"`
	Hosts   map[string]*ProxyServiceDomainConfig `yaml:",inline"` // inline allows domain names as top-level keys
}

// ValidateVersion validates that the version is supported
func ValidateVersion(config *ProxyServiceConfigYAML) error {
	if config.Version != "0.0" {
		return errors.New("only version 0.0 is supported")
	}
	return nil
}

// Create creates a new Proxy
func (m *Proxy) Create(
	ctx context.Context,
	session *model.Session,
	proxy *model.Proxy,
) (*uuid.UUID, error) {
	ae := NewAuditEvent("Proxy.Create", session)
	// check permissions
	isAuthorized, err := IsAuthorized(session, data.PERMISSION_ALLOW_GLOBAL)
	if err != nil && !errors.Is(err, errs.ErrAuthorizationFailed) {
		m.LogAuthError(err)
		return nil, errs.Wrap(err)
	}
	if !isAuthorized {
		m.AuditLogNotAuthorized(ae)
		return nil, errs.ErrAuthorizationFailed
	}
	var companyID *uuid.UUID
	if cid, err := proxy.CompanyID.Get(); err == nil {
		companyID = &cid
	}

	// validate data
	if err := proxy.Validate(); err != nil {
		m.Logger.Errorw("failed to validate proxy", "error", err)
		return nil, errs.Wrap(err)
	}

	// validate Proxy configuration
	if err := m.validateProxyConfig(ctx, proxy); err != nil {
		return nil, err
	}

	// check uniqueness
	name := proxy.Name.MustGet()
	isOK, err := repository.CheckNameIsUnique(
		ctx,
		m.ProxyRepository.DB,
		"proxies",
		name.String(),
		companyID,
		nil,
	)
	if err != nil {
		m.Logger.Errorw("failed to check proxy uniqueness", "error", err)
		return nil, errs.Wrap(err)
	}
	if !isOK {
		m.Logger.Debugw("proxy name is already taken", "name", name.String())
		return nil, validate.WrapErrorWithField(errors.New("is not unique"), "name")
	}

	// create proxy
	id, err := m.ProxyRepository.Insert(
		ctx,
		proxy,
	)
	if err != nil {
		m.Logger.Errorw("failed to create proxy", "error", err)
		return nil, errs.Wrap(err)
	}

	// create associated domains
	err = m.createProxyDomains(ctx, session, id, proxy)
	if err != nil {
		// rollback proxy creation
		m.ProxyRepository.DeleteByID(ctx, id)
		m.Logger.Errorw("failed to create proxy domains", "error", err)
		return nil, errs.Wrap(err)
	}

	ae.Details["id"] = id.String()
	m.AuditLogAuthorized(ae)

	return id, nil
}

// GetAll gets proxies
func (m *Proxy) GetAll(
	ctx context.Context,
	session *model.Session,
	companyID *uuid.UUID,
	options *repository.ProxyOption,
) (*model.Result[model.Proxy], error) {
	result := model.NewEmptyResult[model.Proxy]()
	ae := NewAuditEvent("Proxy.GetAll", session)
	// check permissions
	isAuthorized, err := IsAuthorized(session, data.PERMISSION_ALLOW_GLOBAL)
	if err != nil && !errors.Is(err, errs.ErrAuthorizationFailed) {
		m.LogAuthError(err)
		return result, errs.Wrap(err)
	}
	if !isAuthorized {
		m.AuditLogNotAuthorized(ae)
		return result, errs.ErrAuthorizationFailed
	}
	result, err = m.ProxyRepository.GetAll(
		ctx,
		companyID,
		options,
	)
	if err != nil {
		m.Logger.Errorw("failed to get proxies", "error", err)
		return result, errs.Wrap(err)
	}
	// no audit log on read
	return result, nil
}

// GetAllOverview gets proxies with limited data
func (m *Proxy) GetAllOverview(
	companyID *uuid.UUID, // can be null
	ctx context.Context,
	session *model.Session,
	queryArgs *vo.QueryArgs,
) (*model.Result[model.ProxyOverview], error) {
	result := model.NewEmptyResult[model.ProxyOverview]()
	ae := NewAuditEvent("Proxy.GetAllOverview", session)
	// check permissions
	isAuthorized, err := IsAuthorized(session, data.PERMISSION_ALLOW_GLOBAL)
	if err != nil && !errors.Is(err, errs.ErrAuthorizationFailed) {
		m.LogAuthError(err)
		return result, errs.Wrap(err)
	}
	if !isAuthorized {
		m.AuditLogNotAuthorized(ae)
		return result, errs.ErrAuthorizationFailed
	}
	// get proxies
	result, err = m.ProxyRepository.GetAllSubset(
		ctx,
		companyID,
		&repository.ProxyOption{
			QueryArgs: queryArgs,
		},
	)
	if err != nil {
		m.Logger.Errorw("failed to get proxies subset", "error", err)
		return result, errs.Wrap(err)
	}
	// no audit log on read
	return result, nil
}

// GetByID gets a Proxy by ID
func (m *Proxy) GetByID(
	ctx context.Context,
	session *model.Session,
	id *uuid.UUID,
	options *repository.ProxyOption,
) (*model.Proxy, error) {
	ae := NewAuditEvent("Proxy.GetByID", session)
	ae.Details["id"] = id.String()
	// check permissions
	isAuthorized, err := IsAuthorized(session, data.PERMISSION_ALLOW_GLOBAL)
	if err != nil && !errors.Is(err, errs.ErrAuthorizationFailed) {
		m.LogAuthError(err)
		return nil, errs.Wrap(err)
	}
	if !isAuthorized {
		m.AuditLogNotAuthorized(ae)
		return nil, errs.ErrAuthorizationFailed
	}
	// get proxy
	proxy, err := m.ProxyRepository.GetByID(
		ctx,
		id,
		options,
	)
	if errors.Is(err, gorm.ErrRecordNotFound) {
		// return early this is not a an error
		return nil, errs.Wrap(err)
	}
	if err != nil {
		m.Logger.Errorw("failed to get proxy by ID", "error", err)
		return nil, errs.Wrap(err)
	}

	// no audit log on read
	return proxy, nil
}

// UpdateByID updates a Proxy by ID
func (m *Proxy) UpdateByID(
	ctx context.Context,
	session *model.Session,
	id *uuid.UUID,
	proxy *model.Proxy,
) error {
	ae := NewAuditEvent("Proxy.UpdateByID", session)
	ae.Details["id"] = id.String()
	// check permissions
	isAuthorized, err := IsAuthorized(session, data.PERMISSION_ALLOW_GLOBAL)
	if err != nil && !errors.Is(err, errs.ErrAuthorizationFailed) {
		m.LogAuthError(err)
		return err
	}
	if !isAuthorized {
		m.AuditLogNotAuthorized(ae)
		return errs.ErrAuthorizationFailed
	}
	// get current
	current, err := m.ProxyRepository.GetByID(
		ctx,
		id,
		&repository.ProxyOption{},
	)
	if errors.Is(err, gorm.ErrRecordNotFound) {
		m.Logger.Debugw("failed to update proxy by ID", "error", err)
		return err
	}
	if err != nil {
		m.Logger.Errorw("failed to update proxy by ID", "error", err)
		return err
	}
	// update proxy - if a field is present and not null, update it
	if v, err := proxy.Name.Get(); err == nil {
		// check uniqueness
		var companyID *uuid.UUID
		if cid, err := current.CompanyID.Get(); err == nil {
			companyID = &cid
		}
		name := proxy.Name.MustGet()
		isOK, err := repository.CheckNameIsUnique(
			ctx,
			m.ProxyRepository.DB,
			"proxies",
			name.String(),
			companyID,
			id,
		)
		if err != nil {
			m.Logger.Errorw("failed to check proxy uniqueness", "error", err)
			return err
		}
		if !isOK {
			m.Logger.Debugw("proxy name is already taken", "name", name.String())
			return validate.WrapErrorWithField(errors.New("is not unique"), "name")
		}
		current.Name.Set(v)
	}
	if v, err := proxy.Description.Get(); err == nil {
		current.Description.Set(v)
	}
	if v, err := proxy.StartURL.Get(); err == nil {
		current.StartURL.Set(v)
	}
	if v, err := proxy.ProxyConfig.Get(); err == nil {
		current.ProxyConfig.Set(v)
	}
	// copy transient cert fields — not persisted to db, but needed by syncProxyDomains
	if v, err := proxy.GlobalTLSKey.Get(); err == nil {
		current.GlobalTLSKey.Set(v)
	}
	if v, err := proxy.GlobalTLSPem.Get(); err == nil {
		current.GlobalTLSPem.Set(v)
	}

	// validate updated Proxy configuration
	if err := m.validateProxyConfigForUpdate(ctx, current, id); err != nil {
		return err
	}

	// update proxy
	err = m.ProxyRepository.UpdateByID(
		ctx,
		id,
		current,
	)
	if err != nil {
		m.Logger.Errorw("failed to update proxy by ID", "error", err)
		return err
	}

	// update associated domains
	err = m.syncProxyDomains(ctx, session, id, current)
	if err != nil {
		m.Logger.Errorw("failed to sync proxy domains", "error", err)
		return err
	}

	// clear all sessions for this proxy since config has changed
	// this ensures sessions get the new config (capture rules, rewrite rules, etc.)
	if m.ProxySessionManager != nil {
		m.Logger.Debugw("clearing all sessions for updated proxy",
			"proxyID", id.String(),
		)
		m.ProxySessionManager.ClearSessionsForProxy(id.String())
	}

	ae.Details["id"] = id.String()
	m.AuditLogAuthorized(ae)

	return nil
}

// validateProxyConfigForUpdate validates Proxy configuration during update, allowing same domains for same proxy
func (m *Proxy) validateProxyConfigForUpdate(ctx context.Context, proxy *model.Proxy, proxyID *uuid.UUID) error {
	// validate Proxy configuration YAML
	proxyConfig, err := proxy.ProxyConfig.Get()
	if err != nil {
		return validate.WrapErrorWithField(errors.New("Proxy configuration is required"), "proxyConfig")
	}

	// parse complete YAML structure
	var config ProxyServiceConfigYAML
	if err := yaml.Unmarshal([]byte(proxyConfig.String()), &config); err != nil {
		return validate.WrapErrorWithField(errors.New("invalid YAML format: "+err.Error()), "proxyConfig")
	}

	// set default values
	m.setProxyConfigDefaults(&config)

	// compile regex patterns for capture and response rules
	if err := CompilePathPatterns(&config); err != nil {
		return validate.WrapErrorWithField(err, "proxyConfig")
	}

	// validate version (after defaults are applied)
	if err := ValidateVersion(&config); err != nil {
		return validate.WrapErrorWithField(err, "proxyConfig")
	}

	// validate that at least one domain mapping exists
	if len(config.Hosts) == 0 {
		return validate.WrapErrorWithField(errors.New("at least one domain mapping must be specified"), "proxyConfig")
	}

	// validate global uniqueness of capture names across all domains and global rules
	if err := m.validateGlobalCaptureNameUniqueness(&config); err != nil {
		return err
	}

	// ensure that the start URL domain is mentioned in the domain mappings
	startURL, err := proxy.StartURL.Get()
	if err == nil {
		startURLStr := startURL.String()
		var startDomain string

		// extract domain from start URL
		if strings.Contains(startURLStr, "://") {
			// full URL like https://auth.example.com/login
			parts := strings.Split(startURLStr, "://")
			if len(parts) > 1 {
				domainParts := strings.Split(parts[1], "/")
				startDomain = domainParts[0]
			}
		} else if strings.Contains(startURLStr, "/") {
			// domain/path format like auth.example.com/login
			parts := strings.Split(startURLStr, "/")
			startDomain = parts[0]
		} else {
			// just domain like auth.example.com
			startDomain = startURLStr
		}

		// check if start domain is in the domain mappings
		if startDomain != "" {
			found := false
			for originalDomain := range config.Hosts {
				if originalDomain == startDomain {
					found = true
					break
				}
			}
			if !found {
				return validate.WrapErrorWithField(
					errors.New(fmt.Sprintf("start URL domain '%s' must be included in domain mappings", startDomain)),
					"proxyConfig",
				)
			}
		}
	}

	// validate each domain mapping
	for originalDomain, domainConfig := range config.Hosts {
		if domainConfig == nil {
			return validate.WrapErrorWithField(
				errors.New(fmt.Sprintf("domain config for '%s' is nil", originalDomain)),
				"proxyConfig",
			)
		}

		// validate that 'to' is specified
		if domainConfig.To == "" {
			return validate.WrapErrorWithField(
				errors.New(fmt.Sprintf("'to' field is required for domain '%s'", originalDomain)),
				"proxyConfig",
			)
		}

		// validate domain-specific TLS config
		if err := m.validateTLSConfig(domainConfig.TLS); err != nil {
			return err
		}

		// validate domain-specific access control
		if err := m.validateAccessControl(domainConfig.Access); err != nil {
			return err
		}

		// validate domain-specific capture rules
		if err := m.validateCaptureRules(domainConfig.Capture); err != nil {
			return err
		}

		// validate domain-specific rewrite rules
		if err := m.validateReplaceRules(domainConfig.Rewrite); err != nil {
			return err
		}

		// validate that the phishing domain is not owned by a different proxy
		if err := m.validatePhishingDomainOwnership(ctx, domainConfig.To, proxyID); err != nil {
			return err
		}
	}

	// validate global rules
	if config.Global != nil {
		if err := m.validateTLSConfig(config.Global.TLS); err != nil {
			return err
		}
		if err := m.validateAccessControl(config.Global.Access); err != nil {
			return err
		}
		if err := m.validateCaptureRules(config.Global.Capture); err != nil {
			return err
		}
		if err := m.validateReplaceRules(config.Global.Rewrite); err != nil {
			return err
		}
		// validate global URL rewrite rules
		if err := m.validateURLRewriteRules(config.Global.RewriteURLs); err != nil {
			return err
		}
		// validate global response rules
		if err := m.validateResponseRules(config.Global.Response); err != nil {
			return err
		}
	}

	// validate custom TLS domains have a cert — either a new one is supplied or the domain already has one
	newCertProvided := false
	if globalKey, keyErr := proxy.GlobalTLSKey.Get(); keyErr == nil && len(globalKey) > 0 {
		if globalPem, pemErr := proxy.GlobalTLSPem.Get(); pemErr == nil && len(globalPem) > 0 {
			newCertProvided = true
		}
	}
	if !newCertProvided {
		// resolve the effective TLS mode for each host and check if any require a cert we don't have
		for _, domainConfig := range config.Hosts {
			if domainConfig == nil {
				continue
			}
			// determine effective TLS mode for this host
			effectiveTLS := ""
			if domainConfig.TLS != nil && domainConfig.TLS.Mode != "" {
				effectiveTLS = domainConfig.TLS.Mode
			} else if config.Global != nil && config.Global.TLS != nil {
				effectiveTLS = config.Global.TLS.Mode
			}
			if effectiveTLS != "custom" {
				continue
			}
			// check if the phishing domain already has a custom cert in the db
			phishingDomain, err := vo.NewString255(domainConfig.To)
			if err != nil {
				continue
			}
			existingDomain, err := m.DomainRepository.GetByName(ctx, phishingDomain, &repository.DomainOption{})
			if err != nil || existingDomain == nil {
				// new domain — no existing cert possible
				return validate.WrapErrorWithField(
					fmt.Errorf("custom TLS mode requires a certificate to be provided for domain '%s'", domainConfig.To),
					"proxyConfig",
				)
			}
			if !existingDomain.OwnManagedTLS.MustGet() {
				// existing domain but no custom cert yet
				return validate.WrapErrorWithField(
					fmt.Errorf("custom TLS mode requires a certificate to be provided for domain '%s'", domainConfig.To),
					"proxyConfig",
				)
			}
		}
	}

	return nil
}

// validateCaptureRules validates a slice of capture rules
func (m *Proxy) validateCaptureRules(captureRules []ProxyServiceCaptureRule) error {
	// track capture names to prevent duplicates
	captureNames := make(map[string]bool)

	for _, capture := range captureRules {
		if capture.Name == "" {
			return validate.WrapErrorWithField(errors.New("capture rule name is required"), "proxyConfig")
		}

		// check for duplicate capture names
		if captureNames[capture.Name] {
			return validate.WrapErrorWithField(
				errors.New(fmt.Sprintf("duplicate capture rule name '%s' found - each capture rule must have a unique name", capture.Name)),
				"proxyConfig",
			)
		}
		captureNames[capture.Name] = true

		if capture.Path == "" {
			return validate.WrapErrorWithField(errors.New("capture rule path is required"), "proxyConfig")
		}

		// validate engine field
		if capture.Engine != "" {
			validEngines := []string{"regex", "header", "cookie", "json", "form", "urlencoded", "formdata", "multipart"}
			valid := false
			for _, validEngine := range validEngines {
				if capture.Engine == validEngine {
					valid = true
					break
				}
			}
			if !valid {
				return validate.WrapErrorWithField(
					errors.New("invalid 'engine' value in capture rule, must be one of: "+strings.Join(validEngines, ", ")),
					"proxyConfig",
				)
			}
		}

		// allow empty find pattern for any method path-based navigation tracking
		findStr := capture.GetFindAsString()
		isNavigationTracking := capture.Path != "" && findStr == ""

		if findStr == "" && !isNavigationTracking {
			return validate.WrapErrorWithField(
				errors.New("capture rule must have a find pattern, except for path-based navigation tracking"),
				"proxyConfig",
			)
		}

		if findStr != "" {
			engine := capture.Engine
			// backward compatibility: use 'from' to determine engine if not specified
			if engine == "" && capture.From == "cookie" {
				engine = "cookie"
			}
			if engine == "" {
				engine = "regex"
			}

			// validate based on engine type
			switch engine {
			case "regex":
				// validate regex pattern
				if _, err := regexp.Compile(findStr); err != nil {
					return validate.WrapErrorWithField(
						errors.New("invalid regex pattern in capture rule: "+err.Error()),
						"proxyConfig",
					)
				}
			case "header":
				// header engine: find is the header name
				if findStr == "" {
					return validate.WrapErrorWithField(
						errors.New("capture rule with engine='header' must specify header name in 'find' field"),
						"proxyConfig",
					)
				}
			case "cookie":
				// cookie engine: find is the cookie name
				if findStr == "" {
					return validate.WrapErrorWithField(
						errors.New("capture rule with engine='cookie' must specify cookie name in 'find' field"),
						"proxyConfig",
					)
				}
				// validate cookie name format (basic validation)
				cookieName := findStr
				invalidChars := []string{" ", "\t", "\n", "\r", "=", ";", ","}
				for _, char := range invalidChars {
					if strings.Contains(cookieName, char) {
						return validate.WrapErrorWithField(
							errors.New(fmt.Sprintf("cookie name '%s' contains invalid character '%s'", cookieName, char)),
							"proxyConfig",
						)
					}
				}
			case "json":
				// json engine: find is the json path (e.g., "user.name" or "[0].user.name")
				if findStr == "" {
					return validate.WrapErrorWithField(
						errors.New("capture rule with engine='json' must specify JSON path in 'find' field"),
						"proxyConfig",
					)
				}
			case "form", "urlencoded", "formdata", "multipart":
				// form engines: find is the form field name
				if findStr == "" {
					return validate.WrapErrorWithField(
						errors.New(fmt.Sprintf("capture rule with engine='%s' must specify form field name in 'find' field", engine)),
						"proxyConfig",
					)
				}
			}
		}

		// validate 'event' field if specified
		if capture.Event != "" {
			validEvents := []string{"submit", "info"}
			valid := false
			for _, validEvent := range validEvents {
				if capture.Event == validEvent {
					valid = true
					break
				}
			}
			if !valid {
				return validate.WrapErrorWithField(
					errors.New("invalid 'event' value in capture rule, must be one of: "+strings.Join(validEvents, ", ")),
					"proxyConfig",
				)
			}
		}

		// 'from' field defaults to 'any' if not specified (handled in setProxyConfigDefaults)
		// validate 'from' field if specified
		if capture.From != "" {
			validFromValues := []string{"request_body", "request_header", "response_body", "response_header", "cookie", "any"}
			valid := false
			for _, validFrom := range validFromValues {
				if capture.From == validFrom {
					valid = true
					break
				}
			}
			if !valid {
				return validate.WrapErrorWithField(
					errors.New("invalid 'from' value in capture rule, must be one of: "+strings.Join(validFromValues, ", ")),
					"proxyConfig",
				)
			}
		}

		// validate cookie-specific rules (backward compatibility with from='cookie')
		if capture.From == "cookie" {
			findStr := capture.GetFindAsString()
			if findStr == "" {
				return validate.WrapErrorWithField(
					errors.New("capture rule with from='cookie' must specify cookie name in 'find' field"),
					"proxyConfig",
				)
			}

			// method should be specified for cookie captures
			if capture.Method == "" {
				return validate.WrapErrorWithField(
					errors.New("capture rule with from='cookie' should specify HTTP method"),
					"proxyConfig",
				)
			}
		}
	}
	return nil
}

// validateURLRewriteRules validates URL rewrite rules configuration
func (m *Proxy) validateURLRewriteRules(urlRewriteRules []ProxyServiceURLRewriteRule) error {
	for i, rule := range urlRewriteRules {
		// validate find pattern is not empty
		if rule.Find == "" {
			return validate.WrapErrorWithField(
				errors.New(fmt.Sprintf("URL rewrite rule at index %d must have a find pattern", i)),
				"proxyConfig",
			)
		}

		// validate regex pattern
		if _, err := regexp.Compile(rule.Find); err != nil {
			return validate.WrapErrorWithField(
				errors.New(fmt.Sprintf("URL rewrite rule at index %d has invalid regex pattern: %s", i, err.Error())),
				"proxyConfig",
			)
		}

		// validate replace path is not empty
		if rule.Replace == "" {
			return validate.WrapErrorWithField(
				errors.New(fmt.Sprintf("URL rewrite rule at index %d must have a replace path", i)),
				"proxyConfig",
			)
		}

		// validate query parameter mappings
		queryParamNames := make(map[string]bool)
		for j, queryParam := range rule.Query {
			if queryParam.Find == "" {
				return validate.WrapErrorWithField(
					errors.New(fmt.Sprintf("URL rewrite rule at index %d, query param at index %d must have a find parameter name", i, j)),
					"proxyConfig",
				)
			}
			if queryParam.Replace == "" {
				return validate.WrapErrorWithField(
					errors.New(fmt.Sprintf("URL rewrite rule at index %d, query param at index %d must have a replace parameter name", i, j)),
					"proxyConfig",
				)
			}

			// check for duplicate query parameter mappings
			if queryParamNames[queryParam.Find] {
				return validate.WrapErrorWithField(
					errors.New(fmt.Sprintf("URL rewrite rule at index %d has duplicate query parameter mapping for '%s'", i, queryParam.Find)),
					"proxyConfig",
				)
			}
			queryParamNames[queryParam.Find] = true
		}

		// note: it's valid to both filter and map the same parameter
		// the filter determines which parameters are allowed through,
		// and mappings rename them during the process
	}
	return nil
}

// validateResponseRules validates response rules configuration
func (m *Proxy) validateResponseRules(responseRules []ProxyServiceResponseRule) error {
	for i, rule := range responseRules {
		// validate path is not empty
		if rule.Path == "" {
			return validate.WrapErrorWithField(
				errors.New(fmt.Sprintf("response rule at index %d must have a path", i)),
				"proxyConfig",
			)
		}

		// validate regex pattern
		if _, err := regexp.Compile(rule.Path); err != nil {
			return validate.WrapErrorWithField(
				errors.New(fmt.Sprintf("response rule at index %d has invalid regex pattern '%s': %v", i, rule.Path, err)),
				"proxyConfig",
			)
		}

		// validate status code if specified
		if rule.Status != 0 {
			if rule.Status < 100 || rule.Status > 599 {
				return validate.WrapErrorWithField(
					errors.New(fmt.Sprintf("response rule at index %d has invalid status code %d (must be 100-599)", i, rule.Status)),
					"proxyConfig",
				)
			}
		}

		// validate headers
		for headerName, headerValue := range rule.Headers {
			if headerName == "" {
				return validate.WrapErrorWithField(
					errors.New(fmt.Sprintf("response rule at index %d has empty header name", i)),
					"proxyConfig",
				)
			}
			if strings.Contains(headerName, ":") || strings.Contains(headerName, "\n") || strings.Contains(headerName, "\r") {
				return validate.WrapErrorWithField(
					errors.New(fmt.Sprintf("response rule at index %d has invalid header name '%s'", i, headerName)),
					"proxyConfig",
				)
			}
			if strings.Contains(headerValue, "\n") || strings.Contains(headerValue, "\r") {
				return validate.WrapErrorWithField(
					errors.New(fmt.Sprintf("response rule at index %d has invalid header value for '%s'", i, headerName)),
					"proxyConfig",
				)
			}
		}
	}
	return nil
}

// setProxyConfigDefaults sets default values for Proxy configuration after YAML parsing
func (m *Proxy) setProxyConfigDefaults(config *ProxyServiceConfigYAML) {
	// set default version to 0.0 if not specified
	if config.Version == "" {
		config.Version = "0.0"
	}

	// set defaults for global TLS config
	if config.Global != nil && config.Global.TLS != nil {
		// set default mode to managed if not specified
		if config.Global.TLS.Mode == "" {
			config.Global.TLS.Mode = "managed"
		}
	}

	for domain, domainConfig := range config.Hosts {
		// set defaults for domain TLS config
		if domainConfig != nil && domainConfig.TLS != nil {
			// set default mode to managed if not specified
			if domainConfig.TLS.Mode == "" {
				domainConfig.TLS.Mode = "managed"
			}
		}

		if domainConfig != nil && domainConfig.Capture != nil {
			for i := range domainConfig.Capture {
				// set default required to true if not specified
				if domainConfig.Capture[i].Required == nil {
					trueValue := true
					domainConfig.Capture[i].Required = &trueValue
				}
				// set default 'from' to 'any' if not specified
				if domainConfig.Capture[i].From == "" {
					domainConfig.Capture[i].From = "any"
				}
				// set default engine based on from field for backward compatibility
				if domainConfig.Capture[i].Engine == "" {
					if domainConfig.Capture[i].From == "cookie" {
						domainConfig.Capture[i].Engine = "cookie"
					} else {
						domainConfig.Capture[i].Engine = "regex"
					}
				}
			}
		}
		if domainConfig != nil && domainConfig.Response != nil {
			for i := range domainConfig.Response {
				// set default status to 200 if not specified
				if domainConfig.Response[i].Status == 0 {
					domainConfig.Response[i].Status = 200
				}
			}
		}

		// set defaults for domain access control
		if domainConfig != nil && domainConfig.Access != nil {
			// set default mode to private if not specified
			if domainConfig.Access.Mode == "" {
				domainConfig.Access.Mode = "private"
			}
			// set default deny action for private mode if not specified
			if domainConfig.Access.Mode == "private" && domainConfig.Access.OnDeny == "" {
				domainConfig.Access.OnDeny = "404"
			}
		}

		// clean up rewrite rules based on engine type
		if domainConfig.Rewrite != nil {
			for i := range domainConfig.Rewrite {
				m.cleanupRewriteRule(&domainConfig.Rewrite[i])
			}
		}
		config.Hosts[domain] = domainConfig
	}

	// set defaults for global capture rules
	if config.Global != nil && config.Global.Capture != nil {
		for i := range config.Global.Capture {
			// set default required to true if not specified
			if config.Global.Capture[i].Required == nil {
				trueValue := true
				config.Global.Capture[i].Required = &trueValue
			}
			// set default 'from' to 'any' if not specified
			if config.Global.Capture[i].From == "" {
				config.Global.Capture[i].From = "any"
			}
			// set default engine based on from field for backward compatibility
			if config.Global.Capture[i].Engine == "" {
				if config.Global.Capture[i].From == "cookie" {
					config.Global.Capture[i].Engine = "cookie"
				} else {
					config.Global.Capture[i].Engine = "regex"
				}
			}
		}
	}

	// set defaults for global response rules
	if config.Global != nil && config.Global.Response != nil {
		for i := range config.Global.Response {
			// set default status to 200 if not specified
			if config.Global.Response[i].Status == 0 {
				config.Global.Response[i].Status = 200
			}
		}
	}
	// set defaults for global access control
	if config.Global != nil && config.Global.Access != nil {
		// set default mode to private if not specified
		if config.Global.Access.Mode == "" {
			config.Global.Access.Mode = "private"
		}
		// set default deny action for private mode if not specified
		if config.Global.Access.Mode == "private" && config.Global.Access.OnDeny == "" {
			config.Global.Access.OnDeny = "404"
		}
	}

	// clean up global rewrite rules based on engine type
	if config.Global != nil && config.Global.Rewrite != nil {
		for i := range config.Global.Rewrite {
			m.cleanupRewriteRule(&config.Global.Rewrite[i])
		}
	}
}

// cleanupRewriteRule ensures only relevant fields are set based on engine type
func (m *Proxy) cleanupRewriteRule(rule *ProxyServiceReplaceRule) {
	// set default engine to regex if not specified
	if rule.Engine == "" {
		rule.Engine = "regex"
	}

	// clean up fields based on engine type
	if rule.Engine == "regex" {
		// for regex engine, completely remove dom-specific fields
		rule.Action = ""
		rule.Target = ""
		// set default 'from' to 'response_body' for regex if not specified
		if rule.From == "" {
			rule.From = "response_body"
		}
	} else if rule.Engine == "dom" {
		// for dom engine, set default target if not specified
		if rule.Target == "" {
			rule.Target = "all"
		}
		// dom engine always uses response_body, force it
		rule.From = "response_body"
	} else if rule.Engine == "header" {
		// for header engine, remove dom/regex-specific fields
		rule.Target = ""
		// set default action to 'set' if not specified
		if rule.Action == "" {
			rule.Action = "set"
		}
		// set default 'from' to 'response_header' if not specified
		if rule.From == "" {
			rule.From = "response_header"
		}
	}
}

// validateReplaceRules validates a slice of replace rules
func (m *Proxy) validateReplaceRules(replaceRules []ProxyServiceReplaceRule) error {
	for _, replace := range replaceRules {
		// set default engine to regex if not specified
		engine := replace.Engine
		if engine == "" {
			engine = "regex"
		}

		// validate engine type
		if engine != "regex" && engine != "dom" && engine != "header" {
			return validate.WrapErrorWithField(
				errors.New("invalid 'engine' value in replace rule, must be one of: regex, dom, header"),
				"proxyConfig",
			)
		}

		// validate based on engine type
		if engine == "regex" {
			if replace.Find == "" {
				return validate.WrapErrorWithField(errors.New("replace rule 'find' is required for regex engine"), "proxyConfig")
			}
			if _, err := regexp.Compile(replace.Find); err != nil {
				return validate.WrapErrorWithField(
					errors.New("invalid regex pattern in replace rule 'find': "+err.Error()),
					"proxyConfig",
				)
			}
		} else if engine == "dom" {
			if replace.Find == "" {
				return validate.WrapErrorWithField(errors.New("replace rule 'find' is required for dom engine"), "proxyConfig")
			}
			if replace.Action == "" {
				return validate.WrapErrorWithField(errors.New("replace rule 'action' is required for dom engine"), "proxyConfig")
			}

			// validate dom actions
			validActions := []string{"setText", "setHtml", "setAttr", "removeAttr", "addClass", "removeClass", "remove"}
			validAction := false
			for _, action := range validActions {
				if replace.Action == action {
					validAction = true
					break
				}
			}
			if !validAction {
				return validate.WrapErrorWithField(
					errors.New("invalid 'action' value in replace rule, must be one of: "+strings.Join(validActions, ", ")),
					"proxyConfig",
				)
			}

			// validate that actions requiring a replace value have one
			// removeAttr needs the attribute name to remove in the replace field
			if (replace.Action == "setText" || replace.Action == "setHtml" || replace.Action == "setAttr" || replace.Action == "removeAttr" || replace.Action == "addClass" || replace.Action == "removeClass") && replace.Replace == "" {
				return validate.WrapErrorWithField(
					errors.New("replace rule 'replace' is required for action '"+replace.Action+"'"),
					"proxyConfig",
				)
			}

			// validate target field if specified
			if replace.Target != "" {
				validTargets := []string{"first", "last", "all"}
				isValidTarget := false
				for _, target := range validTargets {
					if replace.Target == target {
						isValidTarget = true
						break
					}
				}
				// also check for numeric patterns like "1,3,5" or "2-4"
				if !isValidTarget {
					if matched, _ := regexp.MatchString(`^(\d+,)*\d+$`, replace.Target); matched {
						isValidTarget = true
					} else if matched, _ := regexp.MatchString(`^\d+-\d+$`, replace.Target); matched {
						isValidTarget = true
					}
				}
				if !isValidTarget {
					return validate.WrapErrorWithField(
						errors.New("invalid 'target' value in replace rule, must be 'first', 'last', 'all', numeric list (1,3,5), or range (2-4)"),
						"proxyConfig",
					)
				}
			}

			// dom engine doesn't use 'from' field - it always works on response_body
			// if 'from' is specified for dom engine, it's ignored (will be forced to response_body)
		} else if engine == "header" {
			if replace.Find == "" {
				return validate.WrapErrorWithField(errors.New("replace rule 'find' (header name) is required for header engine"), "proxyConfig")
			}

			// validate header action
			validActions := []string{"set", "add", "remove"}
			validAction := false
			for _, action := range validActions {
				if replace.Action == action || replace.Action == "" {
					validAction = true
					break
				}
			}
			if !validAction {
				return validate.WrapErrorWithField(
					errors.New("invalid 'action' value for header engine, must be one of: "+strings.Join(validActions, ", ")),
					"proxyConfig",
				)
			}

			// 'replace' (new value) is required for set and add, not for remove
			effectiveAction := replace.Action
			if effectiveAction == "" {
				effectiveAction = "set"
			}
			if (effectiveAction == "set" || effectiveAction == "add") && replace.Replace == "" {
				return validate.WrapErrorWithField(
					errors.New("replace rule 'replace' (new value) is required for header engine action '"+effectiveAction+"'"),
					"proxyConfig",
				)
			}

			// validate that 'from' is a header context when explicitly set
			if replace.From != "" && replace.From != "request_header" && replace.From != "response_header" && replace.From != "any" {
				return validate.WrapErrorWithField(
					errors.New("header engine 'from' must be one of: request_header, response_header, any"),
					"proxyConfig",
				)
			}
		}

		if replace.From != "" {
			validFromValues := []string{"request_body", "request_header", "response_body", "response_header", "any"}
			valid := false
			for _, validFrom := range validFromValues {
				if replace.From == validFrom {
					valid = true
					break
				}
			}
			if !valid {
				return validate.WrapErrorWithField(
					errors.New("invalid 'from' value in replace rule, must be one of: "+strings.Join(validFromValues, ", ")),
					"proxyConfig",
				)
			}
		}
	}
	return nil
}

// validateAccessControl validates access control configuration
func (m *Proxy) validateTLSConfig(tlsConfig *ProxyServiceTLSConfig) error {
	if tlsConfig == nil {
		return nil
	}

	// validate TLS mode
	if tlsConfig.Mode != "" && tlsConfig.Mode != "managed" && tlsConfig.Mode != "self-signed" && tlsConfig.Mode != "custom" {
		return validate.WrapErrorWithField(
			errors.New("tls.mode must be either 'managed', 'self-signed', or 'custom'"),
			"proxyConfig",
		)
	}

	return nil
}

// validateVariablesConfig validates the variables configuration
func (m *Proxy) validateVariablesConfig(variablesConfig *ProxyServiceVariablesConfig) error {
	if variablesConfig == nil {
		return nil
	}

	// validate allowed variable names if specified
	if len(variablesConfig.Allowed) > 0 {
		for _, varName := range variablesConfig.Allowed {
			if !ValidProxyVariables[varName] {
				return validate.WrapErrorWithField(
					fmt.Errorf("invalid variable name '%s' in allowed list. valid variables: %v", varName, GetValidProxyVariableNames()),
					"proxyConfig",
				)
			}
		}
	}

	return nil
}

func (m *Proxy) validateAccessControl(accessControl *ProxyServiceAccessControl) error {
	if accessControl == nil {
		return nil // access control will be set to defaults
	}

	// set default mode if empty
	if accessControl.Mode == "" {
		accessControl.Mode = "private"
	}

	// validate mode
	if accessControl.Mode != "public" && accessControl.Mode != "private" {
		return validate.WrapErrorWithField(
			errors.New("access control mode must be either 'public' or 'private' - private mode uses IP whitelisting like evilginx2"),
			"proxyConfig",
		)
	}

	// validate deny action (only required for private mode)
	if accessControl.Mode == "private" {
		// set default deny action if empty
		if accessControl.OnDeny == "" {
			accessControl.OnDeny = "404"
		}
		if err := m.validateDenyAction(accessControl.OnDeny); err != nil {
			return err
		}
	}

	return nil
}

// validateDenyAction validates a deny action string
func (m *Proxy) validateDenyAction(action string) error {
	if action == "" {
		return nil // action is optional, will use default
	}

	// check for allow action
	if action == "allow" {
		return nil
	}

	// check for redirect action (auto-detect URLs or old redirect: syntax)
	if strings.HasPrefix(action, "http://") || strings.HasPrefix(action, "https://") {
		if len(action) < 10 { // minimum valid URL length
			return validate.WrapErrorWithField(
				errors.New("redirect URL is too short, must be a valid URL like 'https://example.com'"),
				"proxyConfig",
			)
		}
		return nil
	}

	// check for old redirect: syntax (backwards compatibility)
	if strings.HasPrefix(action, "redirect:") {
		url := strings.TrimPrefix(action, "redirect:")
		if url == "" {
			return validate.WrapErrorWithField(
				errors.New("redirect action must include URL: 'redirect:https://example.com' or just 'https://example.com'"),
				"proxyConfig",
			)
		}
		// basic URL validation for old syntax
		if !strings.HasPrefix(url, "http://") && !strings.HasPrefix(url, "https://") {
			return validate.WrapErrorWithField(
				errors.New("redirect URL must start with http:// or https://"),
				"proxyConfig",
			)
		}
		return nil
	}

	// check for status code
	if statusCode, err := strconv.Atoi(action); err == nil {
		if statusCode < 100 || statusCode > 599 {
			return validate.WrapErrorWithField(
				errors.New("status code must be between 100 and 599"),
				"proxyConfig",
			)
		}
		return nil
	}

	return validate.WrapErrorWithField(
		errors.New("deny action must be a valid HTTP status code (e.g., '404') or redirect URL (e.g., 'https://example.com')"),
		"proxyConfig",
	)
}

// validateProxyConfig validates Proxy configuration
func (m *Proxy) validateProxyConfig(ctx context.Context, proxy *model.Proxy) error {
	// validate Proxy configuration YAML
	proxyConfig, err := proxy.ProxyConfig.Get()
	if err != nil {
		return validate.WrapErrorWithField(errors.New("Proxy configuration is required"), "proxyConfig")
	}

	// parse complete YAML structure
	var config ProxyServiceConfigYAML
	if err := yaml.Unmarshal([]byte(proxyConfig.String()), &config); err != nil {
		return validate.WrapErrorWithField(errors.New("invalid YAML format: "+err.Error()), "proxyConfig")
	}

	// set default values
	m.setProxyConfigDefaults(&config)

	// compile regex patterns for capture and response rules
	if err := CompilePathPatterns(&config); err != nil {
		return validate.WrapErrorWithField(err, "proxyConfig")
	}

	// validate version (after defaults are applied)
	if err := ValidateVersion(&config); err != nil {
		return validate.WrapErrorWithField(err, "proxyConfig")
	}

	// validate forward proxy configuration
	if err := m.validateForwardProxy(&config); err != nil {
		return validate.WrapErrorWithField(err, "proxyConfig")
	}

	// validate that at least one domain mapping exists
	if len(config.Hosts) == 0 {
		return validate.WrapErrorWithField(errors.New("at least one domain mapping must be specified"), "proxyConfig")
	}

	// validate global uniqueness of capture names across all domains and global rules
	if err := m.validateGlobalCaptureNameUniqueness(&config); err != nil {
		return err
	}

	// ensure that the start URL domain is mentioned in the domain mappings
	startURL, err := proxy.StartURL.Get()
	if err == nil {
		startURLStr := startURL.String()
		var startDomain string

		// extract domain from start URL
		if strings.Contains(startURLStr, "://") {
			// full URL like https://auth.example.com/login
			parts := strings.Split(startURLStr, "://")
			if len(parts) > 1 {
				domainParts := strings.Split(parts[1], "/")
				startDomain = domainParts[0]
			}
		} else if strings.Contains(startURLStr, "/") {
			// domain/path format like auth.example.com/login
			parts := strings.Split(startURLStr, "/")
			startDomain = parts[0]
		} else {
			// just domain like auth.example.com
			startDomain = startURLStr
		}

		// check if start domain is in the domain mappings
		if startDomain != "" {
			found := false
			for originalDomain := range config.Hosts {
				if originalDomain == startDomain {
					found = true
					break
				}
			}
			if !found {
				return validate.WrapErrorWithField(
					errors.New(fmt.Sprintf("start URL domain '%s' must be included in domain mappings", startDomain)),
					"proxyConfig",
				)
			}
		}
	}

	// validate each domain mapping
	for originalDomain, domainConfig := range config.Hosts {
		if domainConfig == nil {
			return validate.WrapErrorWithField(
				errors.New(fmt.Sprintf("domain config for '%s' is nil", originalDomain)),
				"proxyConfig",
			)
		}

		// validate that 'to' is specified
		if domainConfig.To == "" {
			return validate.WrapErrorWithField(
				errors.New(fmt.Sprintf("'to' field is required for domain mapping '%s'", originalDomain)),
				"proxyConfig",
			)
		}

		// validate domain-specific scheme
		if domainConfig.Scheme != "" && domainConfig.Scheme != "http" && domainConfig.Scheme != "https" {
			return validate.WrapErrorWithField(
				errors.New(fmt.Sprintf("scheme for domain '%s' must be either 'http' or 'https'", originalDomain)),
				"proxyConfig",
			)
		}

		// validate domain-specific TLS config
		if err := m.validateTLSConfig(domainConfig.TLS); err != nil {
			return err
		}

		// validate domain-specific access control
		if err := m.validateAccessControl(domainConfig.Access); err != nil {
			return err
		}

		// validate domain-specific capture rules
		if err := m.validateCaptureRules(domainConfig.Capture); err != nil {
			return err
		}

		// validate domain-specific capture rules
		if err := m.validateCaptureRules(domainConfig.Capture); err != nil {
			return err
		}

		// validate rewrite rules
		if err := m.validateReplaceRules(domainConfig.Rewrite); err != nil {
			return err
		}

		// validate URL rewrite rules
		if err := m.validateURLRewriteRules(domainConfig.RewriteURLs); err != nil {
			return err
		}

		// validate response rules
		if err := m.validateResponseRules(domainConfig.Response); err != nil {
			return err
		}

		// validate that phishing domain is not used by another proxy
		if err := m.validatePhishingDomainUniquenessByStartURL(ctx, domainConfig.To, proxy.StartURL.MustGet().String()); err != nil {
			return err
		}
	}

	// validate global rules
	if config.Global != nil {
		if err := m.validateTLSConfig(config.Global.TLS); err != nil {
			return err
		}
		if err := m.validateAccessControl(config.Global.Access); err != nil {
			return err
		}
		if err := m.validateVariablesConfig(config.Global.Variables); err != nil {
			return err
		}
		if err := m.validateCaptureRules(config.Global.Capture); err != nil {
			return err
		}
		if err := m.validateReplaceRules(config.Global.Rewrite); err != nil {
			return err
		}
		// validate global URL rewrite rules
		if err := m.validateURLRewriteRules(config.Global.RewriteURLs); err != nil {
			return err
		}
		// validate global response rules
		if err := m.validateResponseRules(config.Global.Response); err != nil {
			return err
		}
	}

	return nil
}

// validateForwardProxy validates the forward proxy configuration
func (m *Proxy) validateForwardProxy(config *ProxyServiceConfigYAML) error {
	if config.Proxy == "" {
		return nil // proxy is optional
	}

	// check if it contains socks4 scheme
	if strings.HasPrefix(config.Proxy, "socks4://") {
		return errors.New("socks4 proxies are not supported. please use socks5:// instead")
	}

	// validate that it can be parsed as a URL if it has a scheme
	if strings.Contains(config.Proxy, "://") {
		parsedURL, err := url.Parse(config.Proxy)
		if err != nil {
			return errors.New("invalid proxy URL format: " + err.Error())
		}

		// validate supported schemes
		scheme := parsedURL.Scheme
		if scheme != "http" && scheme != "https" && scheme != "socks5" {
			return errors.New(fmt.Sprintf("unsupported proxy scheme '%s'. supported schemes: http, https, socks5", scheme))
		}
	}

	return nil
}

// validateGlobalCaptureNameUniqueness ensures all capture rule names are unique across the entire Proxy configuration
func (m *Proxy) validateGlobalCaptureNameUniqueness(config *ProxyServiceConfigYAML) error {
	allCaptureNames := make(map[string]string) // name -> location

	// collect all capture names from domain-specific rules
	for domain, domainConfig := range config.Hosts {
		if domainConfig != nil && domainConfig.Capture != nil {
			for _, capture := range domainConfig.Capture {
				if capture.Name == "" {
					continue // this will be caught by other validation
				}

				if existingLocation, exists := allCaptureNames[capture.Name]; exists {
					return validate.WrapErrorWithField(
						errors.New(fmt.Sprintf("duplicate capture rule name '%s' found in domain '%s' - already used in %s", capture.Name, domain, existingLocation)),
						"proxyConfig",
					)
				}
				allCaptureNames[capture.Name] = fmt.Sprintf("domain '%s'", domain)
			}
		}
	}

	// collect all capture names from global rules
	if config.Global != nil && config.Global.Capture != nil {
		for _, capture := range config.Global.Capture {
			if capture.Name == "" {
				continue // this will be caught by other validation
			}

			if existingLocation, exists := allCaptureNames[capture.Name]; exists {
				return validate.WrapErrorWithField(
					errors.New(fmt.Sprintf("duplicate capture rule name '%s' found in global rules - already used in %s", capture.Name, existingLocation)),
					"proxyConfig",
				)
			}
			allCaptureNames[capture.Name] = "global rules"
		}
	}

	return nil
}

// applyConfigurationDefaults applies default values to Proxy configuration for display
func (m *Proxy) applyConfigurationDefaults(proxy *model.Proxy) error {
	proxyConfig, err := proxy.ProxyConfig.Get()
	if err != nil {
		return err
	}

	// parse complete YAML structure
	var config ProxyServiceConfigYAML
	if err := yaml.Unmarshal([]byte(proxyConfig.String()), &config); err != nil {
		return err
	}

	// apply defaults
	m.setProxyConfigDefaults(&config)

	// marshal back to YAML
	updatedConfigBytes, err := yaml.Marshal(&config)
	if err != nil {
		return err
	}

	// update the Proxy configuration with defaults applied
	updatedConfigVO := vo.NewString1MBMust(string(updatedConfigBytes))
	proxy.ProxyConfig = nullable.NewNullableWithValue(*updatedConfigVO)
	return nil
}

// deleteProxyDomains deletes all domains associated with a proxy
func (m *Proxy) deleteProxyDomains(ctx context.Context, session *model.Session, proxyID *uuid.UUID, proxy *model.Proxy) error {
	proxyConfig, err := proxy.ProxyConfig.Get()
	if err != nil {
		return err
	}

	// parse complete YAML structure
	var config ProxyServiceConfigYAML
	if err := yaml.Unmarshal([]byte(proxyConfig.String()), &config); err != nil {
		return err
	}

	// set default values
	m.setProxyConfigDefaults(&config)

	// delete domains for each mapping
	for _, domainConfig := range config.Hosts {
		if domainConfig == nil {
			continue
		}

		// get domain by name and delete if it's a proxy domain
		phishingDomainVO, err := vo.NewString255(domainConfig.To)
		if err != nil {
			continue
		}

		existingDomain, err := m.DomainRepository.GetByName(ctx, phishingDomainVO, &repository.DomainOption{})
		if err == nil && existingDomain != nil {
			// delete old domains that have proxy type
			if existingDomain.Type.MustGet().String() == "proxy" {
				domainID, err := existingDomain.ID.Get()
				if err == nil {
					err = m.DomainService.DeleteProxyDomain(ctx, session, &domainID)
					if err != nil {
						m.Logger.Warnw("failed to delete proxy domain",
							"proxyID", proxyID.String(),
							"domain", domainConfig.To,
							"error", err,
						)
					} else {
						m.Logger.Debugw("deleted proxy domain",
							"proxyID", proxyID.String(),
							"domain", domainConfig.To,
						)
					}
				}
			}
		}
	}

	return nil
}

// validatePhishingDomainOwnership checks that a phishing domain is either unclaimed or owned by the given proxy.
// Used during updates where the proxy already has an ID.
func (m *Proxy) validatePhishingDomainOwnership(ctx context.Context, phishingDomain string, proxyID *uuid.UUID) error {
	phishingDomainVO, err := vo.NewString255(phishingDomain)
	if err != nil {
		return validate.WrapErrorWithField(
			errors.New(fmt.Sprintf("invalid phishing domain format: %s", phishingDomain)),
			"proxyConfig",
		)
	}

	existingDomain, err := m.DomainRepository.GetByName(ctx, phishingDomainVO, &repository.DomainOption{})
	if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
		return err
	}
	if existingDomain == nil {
		return nil
	}

	if existingDomain.Type.MustGet().String() != "proxy" {
		return validate.WrapErrorWithField(
			errors.New(fmt.Sprintf("domain '%s' already exists as a regular domain", phishingDomain)),
			"proxyConfig",
		)
	}

	existingProxyID, err := existingDomain.ProxyID.Get()
	if err != nil {
		return nil // no owner — allow
	}
	if existingProxyID == *proxyID {
		return nil // owned by this proxy — allow
	}
	return validate.WrapErrorWithField(
		errors.New(fmt.Sprintf("phishing domain '%s' is already used by another Proxy configuration", phishingDomain)),
		"proxyConfig",
	)
}

// validatePhishingDomainUniquenessByStartURL checks if a phishing domain is already claimed by another proxy.
// Uses proxy_id for owned domains; falls back to target domain comparison for legacy rows with no proxy_id.
func (m *Proxy) validatePhishingDomainUniquenessByStartURL(ctx context.Context, phishingDomain string, currentStartURL string) error {
	phishingDomainVO, err := vo.NewString255(phishingDomain)
	if err != nil {
		return validate.WrapErrorWithField(
			errors.New(fmt.Sprintf("invalid phishing domain format: %s", phishingDomain)),
			"proxyConfig",
		)
	}

	existingDomain, err := m.DomainRepository.GetByName(ctx, phishingDomainVO, &repository.DomainOption{})
	if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
		return err
	}
	if existingDomain == nil {
		return nil
	}

	if existingDomain.Type.MustGet().String() != "proxy" {
		return validate.WrapErrorWithField(
			errors.New(fmt.Sprintf("domain '%s' already exists as a regular domain", phishingDomain)),
			"proxyConfig",
		)
	}

	// proxy_id is set — domain is owned by another proxy
	if _, err := existingDomain.ProxyID.Get(); err == nil {
		return validate.WrapErrorWithField(
			errors.New(fmt.Sprintf("phishing domain '%s' is already used by another Proxy configuration", phishingDomain)),
			"proxyConfig",
		)
	}

	// proxy_id is null (legacy row) — fall back to target domain comparison
	existingTarget, err := existingDomain.ProxyTargetDomain.Get()
	if err != nil {
		return nil
	}
	currentStartURLParsed, err := url.Parse(currentStartURL)
	if err != nil {
		return validate.WrapErrorWithField(
			errors.New(fmt.Sprintf("invalid start URL format: %s", currentStartURL)),
			"proxyConfig",
		)
	}
	existingTargetStr := strings.ToLower(strings.TrimSpace(existingTarget.String()))
	if strings.Contains(existingTargetStr, "://") {
		if parsed, err := url.Parse(existingTargetStr); err == nil {
			existingTargetStr = strings.ToLower(strings.TrimSpace(parsed.Host))
		}
	}
	if existingTargetStr != strings.ToLower(strings.TrimSpace(currentStartURLParsed.Host)) {
		return validate.WrapErrorWithField(
			errors.New(fmt.Sprintf("phishing domain '%s' is already used by another Proxy configuration", phishingDomain)),
			"proxyConfig",
		)
	}
	return nil
}

// createProxyDomains creates domains for the proxy based on the configuration
func (m *Proxy) createProxyDomains(ctx context.Context, session *model.Session, proxyID *uuid.UUID, proxy *model.Proxy) error {
	proxyConfig, err := proxy.ProxyConfig.Get()
	if err != nil {
		return errs.NewCustomError(fmt.Errorf("failed to get proxy config: %w", err))
	}

	// parse complete YAML structure
	var config ProxyServiceConfigYAML
	if err := yaml.Unmarshal([]byte(proxyConfig.String()), &config); err != nil {
		return errs.NewCustomError(fmt.Errorf("failed to parse proxy config YAML: %w", err))
	}

	// set default values
	m.setProxyConfigDefaults(&config)

	var companyID *uuid.UUID
	if cid, err := proxy.CompanyID.Get(); err == nil {
		companyID = &cid
	}

	createdDomains := make([]string, 0)

	// create domains for each mapping
	for originalDomain, domainConfig := range config.Hosts {
		if domainConfig == nil {
			continue
		}

		if domainConfig.To == "" {
			m.Logger.Warnw("empty 'to' field in domain config",
				"proxyID", proxyID.String(),
				"originalDomain", originalDomain,
			)
			m.rollbackCreatedDomains(ctx, session, createdDomains)
			return errs.NewCustomError(fmt.Errorf("'to' field is required for domain mapping '%s'", originalDomain))
		}

		// create new domain
		domain := &model.Domain{}
		domain.Name.Set(*vo.NewString255Must(domainConfig.To))
		domain.Type.Set(*vo.NewString32Must("proxy"))
		domain.ProxyID.Set(*proxyID)

		// set the target domain to the original domain from the YAML config
		proxyTargetDomain, err := vo.NewOptionalString255(originalDomain)
		if err != nil {
			m.Logger.Errorw("failed to create proxy target domain",
				"proxyID", proxyID.String(),
				"domain", domainConfig.To,
				"error", err,
			)
			// rollback created domains on error
			m.rollbackCreatedDomains(ctx, session, createdDomains)
			return errs.NewCustomError(fmt.Errorf("failed to create proxy target domain for %s: %w", domainConfig.To, err))
		}
		domain.ProxyTargetDomain.Set(*proxyTargetDomain)

		// determine TLS mode from config (check domain-specific first, then global, then default to managed)
		tlsMode := "managed" // default
		if domainConfig.TLS != nil && domainConfig.TLS.Mode != "" {
			tlsMode = domainConfig.TLS.Mode
		} else if config.Global != nil && config.Global.TLS != nil && config.Global.TLS.Mode != "" {
			tlsMode = config.Global.TLS.Mode
		}

		domain.HostWebsite.Set(false)
		if tlsMode == "self-signed" {
			domain.ManagedTLS.Set(false)
			domain.OwnManagedTLS.Set(false)
			domain.SelfSignedTLS.Set(true)
		} else if tlsMode == "custom" {
			// check if a global cert is provided on the proxy model
			globalKey, keyErr := proxy.GlobalTLSKey.Get()
			globalPem, pemErr := proxy.GlobalTLSPem.Get()
			if keyErr == nil && pemErr == nil && len(globalKey) > 0 && len(globalPem) > 0 {
				// apply the global cert to this domain
				domain.ManagedTLS.Set(false)
				domain.OwnManagedTLS.Set(true)
				domain.SelfSignedTLS.Set(false)
				domain.OwnManagedTLSKey.Set(globalKey)
				domain.OwnManagedTLSPem.Set(globalPem)
			} else {
				// no cert provided for a new domain — cannot configure custom TLS without a certificate
				m.Logger.Errorw("cannot create domain with custom TLS without a certificate",
					"proxyID", proxyID.String(),
					"domain", domainConfig.To,
				)
				m.rollbackCreatedDomains(ctx, session, createdDomains)
				return errs.NewValidationError(
					fmt.Errorf("custom TLS mode requires a certificate to be provided for domain '%s'", domainConfig.To),
				)
			}
		} else {
			// default to managed
			domain.ManagedTLS.Set(true)
			domain.OwnManagedTLS.Set(false)
			domain.SelfSignedTLS.Set(false)
		}

		domain.PageContent.Set(*vo.NewOptionalString1MBMust(""))
		domain.PageNotFoundContent.Set(*vo.NewOptionalString1MBMust(""))
		domain.RedirectURL.Set(*vo.NewOptionalString1024Must(""))

		if companyID != nil {
			domain.CompanyID.Set(*companyID)
		}

		_, err = m.DomainService.CreateProxyDomain(ctx, session, domain)
		if err != nil {
			m.Logger.Errorw("failed to create proxy domain",
				"proxyID", proxyID.String(),
				"domain", domainConfig.To,
				"error", err,
			)
			// rollback created domains on error
			m.rollbackCreatedDomains(ctx, session, createdDomains)
			return errs.NewCustomError(fmt.Errorf("failed to create domain %s: %w", domainConfig.To, err))
		}

		createdDomains = append(createdDomains, domainConfig.To)
		m.Logger.Debugw("created proxy domain",
			"proxyID", proxyID.String(),
			"domain", domainConfig.To,
		)
	}

	m.Logger.Infow("successfully created all proxy domains",
		"proxyID", proxyID.String(),
		"domainsCreated", len(createdDomains),
		"domains", createdDomains,
	)

	return nil
}

// rollbackCreatedDomains attempts to delete domains that were created during a failed proxy creation
func (m *Proxy) rollbackCreatedDomains(ctx context.Context, session *model.Session, createdDomains []string) {
	for _, domainName := range createdDomains {
		phishingDomainVO, err := vo.NewString255(domainName)
		if err != nil {
			m.Logger.Warnw("failed to create domain VO for rollback",
				"domain", domainName,
				"error", err,
			)
			continue
		}

		existingDomain, err := m.DomainRepository.GetByName(ctx, phishingDomainVO, &repository.DomainOption{})
		if err != nil {
			m.Logger.Warnw("failed to get domain for rollback",
				"domain", domainName,
				"error", err,
			)
			continue
		}

		if existingDomain != nil && existingDomain.Type.MustGet().String() == "proxy" {
			domainID, err := existingDomain.ID.Get()
			if err == nil {
				err = m.DomainService.DeleteProxyDomain(ctx, session, &domainID)
				if err != nil {
					m.Logger.Warnw("failed to rollback proxy domain",
						"domain", domainName,
						"error", err,
					)
				} else {
					m.Logger.Debugw("rolled back proxy domain",
						"domain", domainName,
					)
				}
			}
		}
	}
}

// syncProxyDomains synchronizes domains for the proxy based on the configuration
func (m *Proxy) syncProxyDomains(ctx context.Context, session *model.Session, proxyID *uuid.UUID, proxy *model.Proxy) error {
	proxyConfig, err := proxy.ProxyConfig.Get()
	if err != nil {
		return errs.NewCustomError(fmt.Errorf("failed to get proxy config for sync: %w", err))
	}

	// get current proxy domains by proxy ID
	currentDomainsResult, err := m.DomainService.GetByProxyID(ctx, session, proxyID)
	if err != nil {
		return fmt.Errorf("failed to get current proxy domains: %w", err)
	}

	// collect specific errors for better reporting
	var syncErrors []string

	currentDomains := make(map[string]*model.Domain)
	for _, domain := range currentDomainsResult.Rows {
		currentDomains[domain.Name.MustGet().String()] = domain
	}

	m.Logger.Debugw("found existing proxy domains for sync",
		"proxyID", proxyID.String(),
		"currentDomainCount", len(currentDomains),
		"currentDomains", func() []string {
			domains := make([]string, 0, len(currentDomains))
			for name := range currentDomains {
				domains = append(domains, name)
			}
			return domains
		}(),
	)

	// parse complete YAML structure
	var config ProxyServiceConfigYAML
	if err := yaml.Unmarshal([]byte(proxyConfig.String()), &config); err != nil {
		return errs.NewCustomError(fmt.Errorf("failed to parse proxy config YAML for sync: %w", err))
	}

	// set default values
	m.setProxyConfigDefaults(&config)

	// get desired domains from config
	desiredDomains := make(map[string]string) // phishing domain -> original domain
	for originalDomain, domainConfig := range config.Hosts {
		if domainConfig == nil {
			continue
		}

		if domainConfig.To != "" {
			desiredDomains[domainConfig.To] = originalDomain
		}
	}

	m.Logger.Debugw("parsed desired domains from config",
		"proxyID", proxyID.String(),
		"desiredDomainCount", len(desiredDomains),
		"desiredDomains", func() []string {
			domains := make([]string, 0, len(desiredDomains))
			for name := range desiredDomains {
				domains = append(domains, name)
			}
			return domains
		}(),
	)

	// delete domains that are no longer needed
	deletedCount := 0
	for phishingDomain, domain := range currentDomains {
		if _, exists := desiredDomains[phishingDomain]; !exists {
			m.Logger.Debugw("domain marked for deletion",
				"proxyID", proxyID.String(),
				"domain", phishingDomain,
			)
			domainID, err := domain.ID.Get()
			if err == nil {
				err = m.DomainService.DeleteProxyDomain(ctx, session, &domainID)
				if err != nil {
					m.Logger.Warnw("failed to delete removed proxy domain",
						"proxyID", proxyID.String(),
						"domain", phishingDomain,
						"error", err,
					)
				} else {
					m.Logger.Infow("deleted removed proxy domain",
						"proxyID", proxyID.String(),
						"domain", phishingDomain,
					)
					deletedCount++
				}
			} else {
				m.Logger.Warnw("failed to get domain ID for deletion",
					"proxyID", proxyID.String(),
					"domain", phishingDomain,
					"error", err,
				)
			}
		} else {
			m.Logger.Debugw("domain still needed, keeping",
				"proxyID", proxyID.String(),
				"domain", phishingDomain,
			)
		}
	}

	// create or update domains that are needed
	createdCount := 0
	updatedCount := 0
	errorCount := 0

	for phishingDomain, originalDomain := range desiredDomains {
		if existingDomain, exists := currentDomains[phishingDomain]; exists {
			// domain already exists, check if target domain needs updating
			needsUpdate := false
			currentTarget, err := existingDomain.ProxyTargetDomain.Get()

			if err != nil || currentTarget.String() != originalDomain {
				// update the target domain
				proxyTargetDomain, err := vo.NewOptionalString255(originalDomain)
				if err == nil {
					existingDomain.ProxyTargetDomain.Set(*proxyTargetDomain)
					needsUpdate = true
				} else {
					m.Logger.Warnw("failed to create proxy target domain for update",
						"proxyID", proxyID.String(),
						"domain", phishingDomain,
						"error", err,
					)
					errorCount++
					continue
				}
			}

			// check if TLS configuration needs updating
			tlsMode := "managed" // default
			if hostConfig, exists := config.Hosts[originalDomain]; exists && hostConfig != nil && hostConfig.TLS != nil && hostConfig.TLS.Mode != "" {
				tlsMode = hostConfig.TLS.Mode
			} else if config.Global != nil && config.Global.TLS != nil && config.Global.TLS.Mode != "" {
				tlsMode = config.Global.TLS.Mode
			}

			// check current TLS settings
			currentManagedTLS := existingDomain.ManagedTLS.MustGet()
			currentSelfSignedTLS := existingDomain.SelfSignedTLS.MustGet()
			currentOwnManagedTLS := existingDomain.OwnManagedTLS.MustGet()

			// determine if TLS settings need updating
			if tlsMode == "self-signed" && !currentSelfSignedTLS {
				// switching to self-signed — clear any existing custom cert flag so updateDomain cleans it up
				existingDomain.ManagedTLS.Set(false)
				existingDomain.OwnManagedTLS.Set(false)
				existingDomain.SelfSignedTLS.Set(true)
				needsUpdate = true
			} else if tlsMode == "managed" && !currentManagedTLS {
				// switching to managed — clear any existing custom cert flag so updateDomain cleans it up
				existingDomain.ManagedTLS.Set(true)
				existingDomain.OwnManagedTLS.Set(false)
				existingDomain.SelfSignedTLS.Set(false)
				needsUpdate = true
			} else if tlsMode == "custom" {
				// check if a new global cert is being pushed
				globalKey, keyErr := proxy.GlobalTLSKey.Get()
				globalPem, pemErr := proxy.GlobalTLSPem.Get()
				if keyErr == nil && pemErr == nil && len(globalKey) > 0 && len(globalPem) > 0 {
					// apply the new global cert — always update when a cert is explicitly provided
					existingDomain.ManagedTLS.Set(false)
					existingDomain.OwnManagedTLS.Set(true)
					existingDomain.SelfSignedTLS.Set(false)
					existingDomain.OwnManagedTLSKey.Set(globalKey)
					existingDomain.OwnManagedTLSPem.Set(globalPem)
					needsUpdate = true
				} else if !currentOwnManagedTLS {
					// no new cert provided and domain doesn't already have a custom cert — cannot switch to custom
					m.Logger.Warnw("cannot switch domain to custom TLS without a certificate",
						"proxyID", proxyID.String(),
						"domain", phishingDomain,
					)
					syncErrors = append(syncErrors, fmt.Sprintf("cannot switch domain '%s' to custom TLS without providing a certificate", phishingDomain))
					errorCount++
					continue
				}
				// if currentOwnManagedTLS is true and no new cert provided — preserve existing cert, no update needed
			}

			if needsUpdate {
				domainID, err := existingDomain.ID.Get()
				if err == nil {
					err = m.DomainService.UpdateProxyDomain(ctx, session, &domainID, existingDomain)
					if err != nil {
						m.Logger.Warnw("failed to update existing proxy domain",
							"proxyID", proxyID.String(),
							"domain", phishingDomain,
							"error", err,
						)
						errorCount++
					} else {
						m.Logger.Debugw("updated existing proxy domain",
							"proxyID", proxyID.String(),
							"domain", phishingDomain,
						)
						updatedCount++
					}
				} else {
					m.Logger.Warnw("failed to get domain ID for update",
						"proxyID", proxyID.String(),
						"domain", phishingDomain,
						"error", err,
					)
					errorCount++
				}
			}
		} else {
			// create new domain
			domain := &model.Domain{}
			domain.Name.Set(*vo.NewString255Must(phishingDomain))
			domain.Type.Set(*vo.NewString32Must("proxy"))
			domain.ProxyID.Set(*proxyID)

			proxyTargetDomain, err := vo.NewOptionalString255(originalDomain)
			if err != nil {
				m.Logger.Warnw("failed to create proxy target domain",
					"proxyID", proxyID.String(),
					"domain", phishingDomain,
					"originalDomain", originalDomain,
					"error", err,
				)
				errorCount++
				continue
			}
			domain.ProxyTargetDomain.Set(*proxyTargetDomain)

			// determine TLS mode from config (check domain-specific first, then global, then default to managed)
			tlsMode := "managed" // default
			if hostConfig, exists := config.Hosts[originalDomain]; exists && hostConfig != nil && hostConfig.TLS != nil && hostConfig.TLS.Mode != "" {
				tlsMode = hostConfig.TLS.Mode
			} else if config.Global != nil && config.Global.TLS != nil && config.Global.TLS.Mode != "" {
				tlsMode = config.Global.TLS.Mode
			}

			domain.HostWebsite.Set(false)
			if tlsMode == "self-signed" {
				domain.ManagedTLS.Set(false)
				domain.OwnManagedTLS.Set(false)
				domain.SelfSignedTLS.Set(true)
			} else if tlsMode == "custom" {
				// check if a global cert is provided on the proxy model
				globalKey, keyErr := proxy.GlobalTLSKey.Get()
				globalPem, pemErr := proxy.GlobalTLSPem.Get()
				if keyErr == nil && pemErr == nil && len(globalKey) > 0 && len(globalPem) > 0 {
					// apply the global cert to this domain
					domain.ManagedTLS.Set(false)
					domain.OwnManagedTLS.Set(true)
					domain.SelfSignedTLS.Set(false)
					domain.OwnManagedTLSKey.Set(globalKey)
					domain.OwnManagedTLSPem.Set(globalPem)
				} else {
					// no cert provided for a new domain — cannot configure custom TLS without a certificate
					m.Logger.Warnw("cannot add domain with custom TLS without a certificate",
						"proxyID", proxyID.String(),
						"domain", phishingDomain,
					)
					syncErrors = append(syncErrors, fmt.Sprintf("cannot add domain '%s' with custom TLS without providing a certificate", phishingDomain))
					errorCount++
					continue
				}
			} else {
				// default to managed
				domain.ManagedTLS.Set(true)
				domain.OwnManagedTLS.Set(false)
				domain.SelfSignedTLS.Set(false)
			}

			pageContent, err := vo.NewOptionalString1MB("")
			if err != nil {
				m.Logger.Warnw("failed to create page content for proxy domain",
					"proxyID", proxyID.String(),
					"domain", phishingDomain,
					"error", err,
				)
				errorCount++
				continue
			}
			domain.PageContent.Set(*pageContent)

			pageNotFoundContent, err := vo.NewOptionalString1MB("")
			if err != nil {
				m.Logger.Warnw("failed to create page not found content for proxy domain",
					"proxyID", proxyID.String(),
					"domain", phishingDomain,
					"error", err,
				)
				errorCount++
				continue
			}
			domain.PageNotFoundContent.Set(*pageNotFoundContent)

			redirectURL, err := vo.NewOptionalString1024("")
			if err != nil {
				errMsg := fmt.Sprintf("failed to create redirect URL for domain '%s': %v", phishingDomain, err)
				m.Logger.Warnw("failed to create redirect URL for proxy domain",
					"proxyID", proxyID.String(),
					"domain", phishingDomain,
					"error", err,
				)
				syncErrors = append(syncErrors, errMsg)
				errorCount++
				continue
			}
			domain.RedirectURL.Set(*redirectURL)

			var companyID *uuid.UUID
			if cid, err := proxy.CompanyID.Get(); err == nil {
				companyID = &cid
				domain.CompanyID.Set(*companyID)
			}

			_, err = m.DomainService.CreateProxyDomain(ctx, session, domain)
			if err != nil {
				errMsg := fmt.Sprintf("failed to create domain '%s': %v", phishingDomain, err)
				m.Logger.Warnw("failed to create new proxy domain",
					"proxyID", proxyID.String(),
					"domain", phishingDomain,
					"error", err,
				)
				syncErrors = append(syncErrors, errMsg)
				errorCount++
			} else {
				m.Logger.Debugw("created new proxy domain",
					"proxyID", proxyID.String(),
					"domain", phishingDomain,
				)
				createdCount++
			}
		}
	}

	m.Logger.Infow("completed proxy domain synchronization",
		"proxyID", proxyID.String(),
		"domainsDeleted", deletedCount,
		"domainsCreated", createdCount,
		"domainsUpdated", updatedCount,
		"errors", errorCount,
	)

	if errorCount > 0 {
		errorDetails := strings.Join(syncErrors, "; ")
		return errs.NewCustomError(fmt.Errorf("proxy domain sync failed with %d errors: %s", errorCount, errorDetails))
	}

	return nil
}

// DeleteByID deletes a proxy by ID
func (m *Proxy) DeleteByID(
	ctx context.Context,
	session *model.Session,
	id *uuid.UUID,
) error {
	ae := NewAuditEvent("Proxy.DeleteByID", session)
	ae.Details["id"] = id.String()
	// check permissions
	isAuthorized, err := IsAuthorized(session, data.PERMISSION_ALLOW_GLOBAL)
	if err != nil && !errors.Is(err, errs.ErrAuthorizationFailed) {
		m.LogAuthError(err)
		return err
	}
	if !isAuthorized {
		m.AuditLogNotAuthorized(ae)
		return errs.ErrAuthorizationFailed
	}

	// get current proxy before deletion to access its domains
	current, err := m.ProxyRepository.GetByID(ctx, id, &repository.ProxyOption{})
	if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
		m.Logger.Errorw("failed to get proxy for domain cleanup", "error", err)
		return err
	}

	// delete associated proxy domains
	if current != nil {
		err = m.deleteProxyDomains(ctx, session, id, current)
		if err != nil {
			m.Logger.Errorw("failed to delete proxy domains", "error", err)
			// continue with proxy deletion even if domain cleanup fails
		}
	}

	// remove the relation from campaign templates
	err = m.CampaignTemplateService.RemoveProxiesByProxyID(
		ctx,
		session,
		id,
	)
	if err != nil {
		m.Logger.Errorw("failed to remove proxy ID relations from campaign templates", "error", err)
		return err
	}

	// delete proxy
	err = m.ProxyRepository.DeleteByID(
		ctx,
		id,
	)
	if err != nil {
		m.Logger.Errorw("failed to delete proxy by ID", "error", err)
		return err
	}
	m.AuditLogAuthorized(ae)

	return nil
}