import { Router } from 'express';
import { getDb } from '../db';
import { execSync } from 'child_process';
import path from 'path';
import { fileURLToPath } from 'url';

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
const PROJECT_ROOT = path.resolve(__dirname, '..', '..', '..');
const PIPELINE_SCRIPT = path.join(PROJECT_ROOT, '.claude', 'skills', 'video-from-script', 'scripts', 'pipeline.js');

export const pipelineRouter = Router();

pipelineRouter.get('/conversations', (_req, res) => {
  const rows = getDb().prepare('SELECT * FROM conversations ORDER BY updated_at DESC').all();
  res.json(rows);
});

pipelineRouter.get('/conversations/:id/messages', (req, res) => {
  const rows = getDb().prepare(
    'SELECT * FROM messages WHERE conversation_id = ? ORDER BY created_at'
  ).all(req.params.id);
  res.json(rows);
});

pipelineRouter.delete('/conversations/:id', (req, res) => {
  getDb().prepare('DELETE FROM conversations WHERE id = ?').run(req.params.id);
  res.status(204).send();
});

pipelineRouter.get('/status', (req, res) => {
  const { manifest } = req.query;
  if (!manifest) return res.status(400).json({ error: 'manifest path required' });
  try {
    const result = execSync(`node "${PIPELINE_SCRIPT}" status --manifest "${manifest}"`, {
      cwd: PROJECT_ROOT, encoding: 'utf-8',
    });
    res.json({ output: result });
  } catch (e) {
    res.status(500).json({ error: (e as Error).message });
  }
});

pipelineRouter.post('/resume', (req, res) => {
  const { manifest } = req.body;
  if (!manifest) return res.status(400).json({ error: 'manifest path required' });
  try {
    const result = execSync(`node "${PIPELINE_SCRIPT}" run --manifest "${manifest}" --resume`, {
      cwd: PROJECT_ROOT, encoding: 'utf-8',
    });
    res.json({ output: result });
  } catch (e) {
    res.status(500).json({ error: (e as Error).message });
  }
});