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chore: cleanup unused code and dead imports

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This commit is contained in:
zarzet
2026-01-20 02:10:10 +07:00
parent 8e9d0c3e9a
commit 03027813c1
62 changed files with 213 additions and 1326 deletions
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go_backend/amazon.go
+4 -21
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@@ -17,13 +17,12 @@ import (
"time"
)
// AmazonDownloader handles Amazon Music downloads using DoubleDouble service (same as PC)
type AmazonDownloader struct {
client *http.Client
regions []string // us, eu regions for DoubleDouble service
lastAPICallTime time.Time // Rate limiting: track last API call
apiCallCount int // Rate limiting: counter per minute
apiCallResetTime time.Time // Rate limiting: reset time
regions []string
lastAPICallTime time.Time
apiCallCount int
apiCallResetTime time.Time
}
var (
@@ -38,7 +37,6 @@ type DoubleDoubleSubmitResponse struct {
ID string `json:"id"`
}
// DoubleDoubleStatusResponse is the response from DoubleDouble status endpoint
type DoubleDoubleStatusResponse struct {
Status string `json:"status"`
FriendlyStatus string `json:"friendlyStatus"`
@@ -49,7 +47,6 @@ type DoubleDoubleStatusResponse struct {
} `json:"current"`
}
// amazonArtistsMatch checks if the artist names are similar enough
func amazonArtistsMatch(expectedArtist, foundArtist string) bool {
normExpected := strings.ToLower(strings.TrimSpace(expectedArtist))
normFound := strings.ToLower(strings.TrimSpace(foundArtist))
@@ -90,7 +87,6 @@ func amazonArtistsMatch(expectedArtist, foundArtist string) bool {
return false
}
// amazonIsASCIIString checks if a string contains only ASCII characters
func amazonIsASCIIString(s string) bool {
for _, r := range s {
if r > 127 {
@@ -100,7 +96,6 @@ func amazonIsASCIIString(s string) bool {
return true
}
// NewAmazonDownloader creates a new Amazon downloader (returns singleton for connection reuse)
func NewAmazonDownloader() *AmazonDownloader {
amazonDownloaderOnce.Do(func() {
globalAmazonDownloader = &AmazonDownloader{
@@ -113,7 +108,6 @@ func NewAmazonDownloader() *AmazonDownloader {
}
// waitForRateLimit implements rate limiting similar to PC version
// Max 9 requests per minute with 7 second delay between requests
func (a *AmazonDownloader) waitForRateLimit() {
amazonRateLimitMu.Lock()
defer amazonRateLimitMu.Unlock()
@@ -125,7 +119,6 @@ func (a *AmazonDownloader) waitForRateLimit() {
a.apiCallResetTime = now
}
// If we've hit the limit (9 requests per minute), wait until next minute
if a.apiCallCount >= 9 {
waitTime := time.Minute - now.Sub(a.apiCallResetTime)
if waitTime > 0 {
@@ -136,7 +129,6 @@ func (a *AmazonDownloader) waitForRateLimit() {
}
}
// Add delay between requests (7 seconds like PC version)
if !a.lastAPICallTime.IsZero() {
timeSinceLastCall := now.Sub(a.lastAPICallTime)
minDelay := 7 * time.Second
@@ -151,7 +143,6 @@ func (a *AmazonDownloader) waitForRateLimit() {
a.apiCallCount++
}
// GetAvailableAPIs returns list of available DoubleDouble regions
// Uses same service as PC version (doubledouble.top)
func (a *AmazonDownloader) GetAvailableAPIs() []string {
// DoubleDouble service regions (same as PC)
@@ -176,11 +167,9 @@ func (a *AmazonDownloader) downloadFromDoubleDoubleService(amazonURL, _ string)
serviceDomain, _ := base64.StdEncoding.DecodeString("LmRvdWJsZWRvdWJsZS50b3A=") // .doubledouble.top
baseURL := fmt.Sprintf("%s%s%s", string(serviceBase), region, string(serviceDomain))
// Step 1: Submit download request with rate limiting
encodedURL := url.QueryEscape(amazonURL)
submitURL := fmt.Sprintf("%s/dl?url=%s", baseURL, encodedURL)
// Apply rate limiting before request (like PC version)
a.waitForRateLimit()
req, err := http.NewRequest("GET", submitURL, nil)
@@ -334,7 +323,6 @@ func (a *AmazonDownloader) downloadFromDoubleDoubleService(amazonURL, _ string)
return "", "", "", fmt.Errorf("all regions failed. Last error: %v", lastError)
}
// DownloadFile downloads a file from URL with User-Agent and progress tracking
func (a *AmazonDownloader) DownloadFile(downloadURL, outputPath, itemID string) error {
ctx := context.Background()
@@ -434,7 +422,6 @@ type AmazonDownloadResult struct {
ISRC string
}
// downloadFromAmazon downloads a track using the request parameters
// Uses DoubleDouble service (same as PC version)
func downloadFromAmazon(req DownloadRequest) (AmazonDownloadResult, error) {
downloader := NewAmazonDownloader()
@@ -580,15 +567,12 @@ func downloadFromAmazon(req DownloadRequest) (AmazonDownloadResult, error) {
fmt.Printf("Warning: failed to embed metadata: %v\n", err)
}
// Handle lyrics based on LyricsMode setting
// Mode: "embed" (default), "external" (.lrc file), "both"
if req.EmbedLyrics && parallelResult != nil && parallelResult.LyricsLRC != "" {
lyricsMode := req.LyricsMode
if lyricsMode == "" {
lyricsMode = "embed" // default
}
// Save external .lrc file if mode is "external" or "both"
if lyricsMode == "external" || lyricsMode == "both" {
GoLog("[Amazon] Saving external LRC file...\n")
if lrcPath, lrcErr := SaveLRCFile(outputPath, parallelResult.LyricsLRC); lrcErr != nil {
@@ -598,7 +582,6 @@ func downloadFromAmazon(req DownloadRequest) (AmazonDownloadResult, error) {
}
}
// Embed lyrics if mode is "embed" or "both"
if lyricsMode == "embed" || lyricsMode == "both" {
GoLog("[Amazon] Embedding parallel-fetched lyrics (%d lines)...\n", len(parallelResult.LyricsData.Lines))
if embedErr := EmbedLyrics(outputPath, parallelResult.LyricsLRC); embedErr != nil {