#!/usr/bin/env bun
/**
 * gstack-publish — publish gstack standalone methodology skills to
 * configured marketplaces (ClawHub, SkillsMP, Vercel Skills.sh).
 *
 * Usage:
 *   gstack-publish              Publish all skills listed in skills.json
 *   gstack-publish <slug>       Publish a single skill by slug
 *   gstack-publish --dry-run    Validate manifest + resolve auth, don't publish
 *   gstack-publish --list       List skills + marketplace targets
 *   gstack-publish --changelog "description"
 *                               Pass a changelog message (required by some CLIs)
 *
 * Per-skill error isolation: if publishing to one marketplace fails for one skill,
 * the batch continues. Aggregate failures are reported at the end with exit 1.
 *
 * Idempotent: publishing the same version twice is a no-op for marketplaces that
 * reject duplicate versions; for others, gstack-publish bumps the version check
 * via their auth_check command and reports if the version already exists.
 */

import * as fs from 'fs';
import * as path from 'path';
import { execSync, spawnSync } from 'child_process';

const ROOT = path.resolve(import.meta.dir, '..');
const MANIFEST_PATH = path.join(ROOT, 'skills.json');

interface SkillEntry {
  slug: string;
  source: string;
  name: string;
  version: string;
  category: string;
  description: string;
  marketplaces: Record<string, { slug: string; publish: boolean }>;
  standalone: boolean;
  compatible_hosts: string[];
}

interface MarketplaceConfig {
  cli: string;
  login_cmd: string;
  publish_cmd_template: string;
  docs: string;
  auth_check: string;
}

interface Manifest {
  version: string;
  description: string;
  skills: SkillEntry[];
  marketplaces: Record<string, MarketplaceConfig>;
}

function arg(name: string, def?: string): string | undefined {
  const idx = process.argv.findIndex(a => a === name || a.startsWith(name + '='));
  if (idx < 0) return def;
  const eqIdx = process.argv[idx].indexOf('=');
  if (eqIdx >= 0) return process.argv[idx].slice(eqIdx + 1);
  return process.argv[idx + 1];
}

function flag(name: string): boolean {
  return process.argv.includes(name);
}

function loadManifest(): Manifest {
  if (!fs.existsSync(MANIFEST_PATH)) {
    console.error(`ERROR: ${MANIFEST_PATH} not found.`);
    process.exit(1);
  }
  try {
    return JSON.parse(fs.readFileSync(MANIFEST_PATH, 'utf-8'));
  } catch (err) {
    console.error(`ERROR: could not parse ${MANIFEST_PATH}:`, (err as Error).message);
    process.exit(1);
  }
}

function validateSkill(skill: SkillEntry): string[] {
  const errs: string[] = [];
  if (!skill.slug) errs.push('missing slug');
  if (!skill.version) errs.push('missing version');
  if (!skill.source) errs.push('missing source');
  if (skill.source) {
    const fullPath = path.join(ROOT, skill.source);
    if (!fs.existsSync(fullPath)) errs.push(`source file missing: ${skill.source}`);
  }
  if (!Object.keys(skill.marketplaces || {}).length) errs.push('no marketplaces configured');
  return errs;
}

function checkAuth(marketplace: string, cfg: MarketplaceConfig): { ok: boolean; reason?: string } {
  // Check binary exists
  const binCheck = spawnSync('sh', ['-c', `command -v ${cfg.cli}`], { timeout: 2000 });
  if (binCheck.status !== 0) {
    return { ok: false, reason: `${cfg.cli} CLI not on PATH. Docs: ${cfg.docs}` };
  }
  // Run auth check. Success = ok. Any non-zero = not authenticated.
  const authCheck = spawnSync('sh', ['-c', cfg.auth_check], { timeout: 5000 });
  if (authCheck.status !== 0) {
    return { ok: false, reason: `not authenticated. Run: ${cfg.login_cmd}` };
  }
  return { ok: true };
}

interface PublishResult {
  skill: string;
  marketplace: string;
  ok: boolean;
  reason?: string;
  cmd?: string;
}

function buildCommand(template: string, subs: Record<string, string>): string {
  return template.replace(/\{(\w+)\}/g, (_, key) => subs[key] ?? `{${key}}`);
}

function publishOne(skill: SkillEntry, marketplace: string, cfg: MarketplaceConfig, changelog: string, dryRun: boolean): PublishResult {
  const sourceDir = path.dirname(path.join(ROOT, skill.source));
  const target = skill.marketplaces[marketplace];
  if (!target || !target.publish) {
    return { skill: skill.slug, marketplace, ok: true, reason: 'not configured for this marketplace' };
  }
  const cmd = buildCommand(cfg.publish_cmd_template, {
    source_dir: sourceDir,
    slug: target.slug,
    name: skill.name,
    version: skill.version,
    changelog,
  });
  if (dryRun) {
    return { skill: skill.slug, marketplace, ok: true, reason: 'DRY-RUN (not executed)', cmd };
  }
  try {
    const out = execSync(cmd, { stdio: 'pipe', timeout: 120_000, encoding: 'utf-8' });
    return { skill: skill.slug, marketplace, ok: true, cmd, reason: out.slice(0, 200) };
  } catch (err: unknown) {
    const e = err as { stderr?: Buffer; message?: string };
    const reason = e.stderr?.toString()?.slice(0, 400) ?? e.message ?? 'unknown error';
    return { skill: skill.slug, marketplace, ok: false, cmd, reason };
  }
}

function cmdList(m: Manifest): void {
  console.log(`gstack-publish manifest v${m.version}: ${m.skills.length} skills\n`);
  for (const s of m.skills) {
    console.log(`  ${s.slug} v${s.version} (${s.category})`);
    console.log(`    source: ${s.source}`);
    const targets = Object.entries(s.marketplaces).filter(([, v]) => v.publish).map(([k]) => k);
    console.log(`    publish to: ${targets.join(', ') || '(none)'}`);
    console.log();
  }
  console.log('Configured marketplaces:');
  for (const [name, cfg] of Object.entries(m.marketplaces)) {
    console.log(`  ${name}: ${cfg.cli} (docs: ${cfg.docs})`);
  }
}

async function main(): Promise<void> {
  const manifest = loadManifest();

  if (flag('--list')) {
    cmdList(manifest);
    return;
  }

  const dryRun = flag('--dry-run');
  const changelog = arg('--changelog') ?? `gstack-publish ${new Date().toISOString().slice(0, 10)}`;
  const targetSlug = process.argv.slice(2).find(a => !a.startsWith('--'));

  // 1. Validate manifest entries
  console.log(`== Validating manifest (${manifest.skills.length} skills) ==`);
  const validationErrors: Array<{ slug: string; errors: string[] }> = [];
  for (const s of manifest.skills) {
    const errs = validateSkill(s);
    if (errs.length) validationErrors.push({ slug: s.slug, errors: errs });
  }
  if (validationErrors.length) {
    console.error('Manifest validation failed:');
    for (const { slug, errors } of validationErrors) {
      console.error(`  ${slug}: ${errors.join(', ')}`);
    }
    process.exit(1);
  }
  console.log('  OK\n');

  // 2. Filter skills (single slug or all)
  const skills = targetSlug
    ? manifest.skills.filter(s => s.slug === targetSlug)
    : manifest.skills;
  if (!skills.length) {
    console.error(`ERROR: skill not found: ${targetSlug}`);
    process.exit(1);
  }

  // 3. Check marketplace auth (only for marketplaces we'll actually use)
  const activeMarketplaces = new Set<string>();
  for (const s of skills) {
    for (const [name, cfg] of Object.entries(s.marketplaces)) {
      if (cfg.publish) activeMarketplaces.add(name);
    }
  }
  console.log(`== Checking auth for ${activeMarketplaces.size} marketplace(s) ==`);
  const authStatus: Record<string, { ok: boolean; reason?: string }> = {};
  for (const mp of activeMarketplaces) {
    const cfg = manifest.marketplaces[mp];
    if (!cfg) {
      authStatus[mp] = { ok: false, reason: `no config for marketplace ${mp}` };
      continue;
    }
    const res = checkAuth(mp, cfg);
    authStatus[mp] = res;
    console.log(`  ${mp}: ${res.ok ? 'OK' : 'NOT READY — ' + res.reason}`);
  }
  console.log();

  // 4. Publish
  const results: PublishResult[] = [];
  for (const skill of skills) {
    console.log(`== Publishing ${skill.slug} v${skill.version} ==`);
    for (const [mp, target] of Object.entries(skill.marketplaces)) {
      if (!target.publish) continue;
      if (!authStatus[mp]?.ok && !dryRun) {
        results.push({ skill: skill.slug, marketplace: mp, ok: false, reason: `auth not ready: ${authStatus[mp]?.reason}` });
        console.log(`  ${mp}: SKIPPED (auth not ready)`);
        continue;
      }
      const cfg = manifest.marketplaces[mp];
      if (!cfg) {
        results.push({ skill: skill.slug, marketplace: mp, ok: false, reason: 'no marketplace config' });
        continue;
      }
      const r = publishOne(skill, mp, cfg, changelog, dryRun);
      results.push(r);
      const tag = r.ok ? (dryRun ? 'DRY-RUN' : 'OK') : 'FAIL';
      console.log(`  ${mp}: ${tag}${r.reason ? ' — ' + r.reason.slice(0, 80) : ''}`);
    }
    console.log();
  }

  // 5. Summary
  const successes = results.filter(r => r.ok).length;
  const failures = results.filter(r => !r.ok);
  console.log(`== Summary ==`);
  console.log(`  Published: ${successes}`);
  console.log(`  Failed:    ${failures.length}`);
  if (failures.length) {
    console.log();
    for (const f of failures) {
      console.log(`  ${f.skill} → ${f.marketplace}: ${f.reason}`);
    }
    process.exit(1);
  }
  if (dryRun) {
    console.log(`\n(--dry-run — no actual publish happened)`);
  }
}

main().catch(err => {
  console.error('FATAL:', err);
  process.exit(1);
});