const express = require('express');
const router = express.Router();
const fs = require('fs');
const path = require('path');
const { getDb } = require('../models/db');
const { authMiddleware } = require('../middleware/auth');

// help.md lives inside the backend source tree — NOT in /app/data which is
// volume-mounted and would hide files baked into the image at build time.
const HELP_FILE = path.join(__dirname, '../data/help.md');

// GET /api/help — returns markdown content
router.get('/', authMiddleware, (req, res) => {
  let content = '';
  const filePath = HELP_FILE;
  try {
    content = fs.readFileSync(filePath, 'utf8');
  } catch (e) {
    content = '# Getting Started\n\nHelp content is not available yet.';
  }
  res.json({ content });
});

// GET /api/help/status — returns whether user has dismissed help
router.get('/status', authMiddleware, (req, res) => {
  const db = getDb();
  const user = db.prepare('SELECT help_dismissed FROM users WHERE id = ?').get(req.user.id);
  res.json({ dismissed: !!user?.help_dismissed });
});

// POST /api/help/dismiss — set help_dismissed for current user
router.post('/dismiss', authMiddleware, (req, res) => {
  const { dismissed } = req.body;
  const db = getDb();
  db.prepare("UPDATE users SET help_dismissed = ? WHERE id = ?")
    .run(dismissed ? 1 : 0, req.user.id);
  res.json({ success: true });
});

module.exports = router;