#!/usr/bin/env node
/**
 * Push a gnommo video project to GnommoEditor's ingest API.
 *
 * Usage:
 *   node scripts/push-gnommo-video.js <path-to-video-dir>
 *   node scripts/push-gnommo-video.js ../gnommo/video1
 *
 * Reads: project.json, slides.json, manuscript.txt, narration.json,
 *        audio.json, videos.json, citations.json, .gnommo_sync.json
 *
 * Environment:
 *   INGEST_API_KEY  — Bearer token (default: dev-ingest-key-change-me)
 *   INGEST_URL      — API base URL   (default: http://localhost:3001)
 */

import { readFileSync, existsSync } from 'fs';
import { resolve, join, dirname } from 'path';
import { fileURLToPath } from 'url';

const __dirname = dirname(fileURLToPath(import.meta.url));

// Load .env from project root
const envPath = resolve(__dirname, '../.env');
if (existsSync(envPath)) {
  for (const line of readFileSync(envPath, 'utf8').split('\n')) {
    const trimmed = line.trim();
    if (!trimmed || trimmed.startsWith('#')) continue;
    const eqIdx = trimmed.indexOf('=');
    if (eqIdx < 0) continue;
    const key = trimmed.slice(0, eqIdx).trim();
    const val = trimmed.slice(eqIdx + 1).trim().replace(/^["']|["']$/g, '');
    if (!process.env[key]) process.env[key] = val;
  }
}

const API_KEY = process.env.INGEST_API_KEY || 'dev-ingest-key-change-me';
const BASE_URL = process.env.INGEST_URL || 'http://localhost:3001';

const videoDir = process.argv[2];
if (!videoDir) {
  console.error('Usage: node scripts/push-gnommo-video.js <video-dir>');
  process.exit(1);
}

const absDir = resolve(process.cwd(), videoDir);

function readJson(absPath, label) {
  if (!existsSync(absPath)) return null;
  try {
    return JSON.parse(readFileSync(absPath, 'utf8'));
  } catch (e) {
    console.warn(`Warning: could not parse ${label}: ${e.message}`);
    return null;
  }
}

function readText(absPath) {
  return existsSync(absPath) ? readFileSync(absPath, 'utf8') : null;
}

// Resolve a project-relative path against the video directory.
// Falls back to a conventional path if the field is missing.
function resolveAsset(fieldValue, fallbackRelative) {
  if (fieldValue) {
    const candidate = resolve(absDir, fieldValue);
    if (existsSync(candidate)) return candidate;
  }
  if (fallbackRelative) {
    const videoName = absDir.split('/').pop();
    const candidate = resolve(absDir, fallbackRelative.replace('{name}', videoName));
    if (existsSync(candidate)) return candidate;
  }
  return null;
}

// ── Read project.json ──────────────────────────────────────────────────────
const projectPath = join(absDir, 'project.json');
if (!existsSync(projectPath)) {
  console.error(`project.json not found at: ${projectPath}`);
  process.exit(1);
}
const project = JSON.parse(readFileSync(projectPath, 'utf8'));
console.log(`Pushing: ${project.id}`);

// ── Read slides.json ───────────────────────────────────────────────────────
const slidesPath = resolveAsset(
  project.slides,
  `media/slides/{name}/slides.json`
);
if (!slidesPath) {
  console.error('Could not find slides.json');
  process.exit(1);
}
const slides = JSON.parse(readFileSync(slidesPath, 'utf8'));
console.log(`  slides: ${Object.keys(slides).length}`);

// ── Read manuscript.txt (optional) ────────────────────────────────────────
const manuscript = readText(join(absDir, 'manuscript.txt'))
               ?? readText(join(absDir, 'script.md'));
if (manuscript) console.log('  manuscript: found');

// ── Read narration.json (optional) ────────────────────────────────────────
const narrationPath = resolveAsset(project.narration);
const narration = narrationPath ? readJson(narrationPath, 'narration.json') : null;
if (narration) console.log(`  narration: ${Object.keys(narration).length} segments`);

// ── Read audio.json (optional) ────────────────────────────────────────────
const audioPath = resolveAsset(project.audio);
const audio = audioPath ? readJson(audioPath, 'audio.json') : null;
if (audio) console.log(`  audio: ${Object.keys(audio).length} tracks`);

// ── Read videos.json (optional) ───────────────────────────────────────────
const videosPath = resolveAsset(project.videos);
const videos = videosPath ? readJson(videosPath, 'videos.json') : null;
if (videos) console.log(`  video assets: ${Object.keys(videos).length}`);

// ── Read citations.json (optional) ────────────────────────────────────────
const citations = readJson(join(absDir, 'citations.json'), 'citations.json');
if (citations) console.log(`  citations: ${citations.length}`);

// ── Read .gnommo_sync.json (optional) ─────────────────────────────────────
const sync = readJson(join(absDir, '.gnommo_sync.json'), '.gnommo_sync.json');
if (sync) console.log(`  sync: version ${sync.video_version}`);

// ── POST to ingest API ─────────────────────────────────────────────────────
const payload = {
  project,
  slides,
  ...(manuscript  ? { manuscript }  : {}),
  ...(narration   ? { narration }   : {}),
  ...(audio       ? { audio }       : {}),
  ...(videos      ? { videos }      : {}),
  ...(citations   ? { citations }   : {}),
  ...(sync        ? { sync }        : {}),
};

const response = await fetch(`${BASE_URL}/api/ingest`, {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Authorization': `Bearer ${API_KEY}`,
  },
  body: JSON.stringify(payload),
});

const body = await response.json();

if (!response.ok) {
  console.error(`Ingest failed (${response.status}):`, body);
  process.exit(1);
}

console.log(`Done — video_id=${body.video_id}, slides_upserted=${body.slides_upserted}`);