const fs = require('fs');
const path = require('path');
const pool = require('../config/db');

const galleryDir = path.join(__dirname, '..', 'gallery');

exports.list = async (req, res) => {
  try {
    if (!fs.existsSync(galleryDir)) return res.json([]);
    const dates = fs.readdirSync(galleryDir).filter((d) => fs.statSync(path.join(galleryDir, d)).isDirectory()).sort().reverse();
    const result = [];
    for (const date of dates) {
      const dirPath = path.join(galleryDir, date);
      const files = fs.readdirSync(dirPath)
        .filter((f) => /\.(jpg|jpeg|png|gif|webp|heic)$/i.test(f) && f !== '.thumbnails')
        .map((f) => ({ filename: f, url: `/gallery/${date}/${encodeURIComponent(f)}` }))
        .sort();
      if (files.length > 0) result.push({ date, files });
    }
    res.json(result);
  } catch (err) {
    console.error(err);
    res.status(500).json({ error: 'Erreur serveur' });
  }
};

exports.upload = async (req, res) => {
  try {
    if (!req.files || req.files.length === 0) {
      return res.status(400).json({ error: 'Aucun fichier sélectionné' });
    }
    const { date_club } = req.body;
    if (!date_club) return res.status(400).json({ error: 'Date du rendez-vous requise' });
    const dateFolder = date_club.replace(/-/g, '');
    const targetDir = path.join(galleryDir, dateFolder);
    if (!fs.existsSync(targetDir)) fs.mkdirSync(targetDir, { recursive: true });
    const saved = [];
    for (const file of req.files) {
      const ext = path.extname(file.originalname);
      const baseName = path.basename(file.originalname, ext);
      let destPath = path.join(targetDir, file.originalname);
      let counter = 1;
      while (fs.existsSync(destPath)) {
        destPath = path.join(targetDir, `${baseName}_${counter}${ext}`);
        counter++;
      }
      fs.renameSync(file.path, destPath);
      saved.push({ filename: path.basename(destPath), url: `/gallery/${dateFolder}/${path.basename(destPath)}` });
    }
    res.json({ message: `${saved.length} photo(s) ajoutée(s)`, files: saved });
  } catch (err) {
    console.error(err);
    res.status(500).json({ error: 'Erreur upload' });
  }
};

exports.deletePhoto = async (req, res) => {
  try {
    if (req.user.role !== 'admin') return res.status(403).json({ error: 'Admin seulement' });
    const { date, filename } = req.params;
    const filePath = path.join(galleryDir, date, filename);
    if (!fs.existsSync(filePath)) return res.status(404).json({ error: 'Fichier introuvable' });
    fs.unlinkSync(filePath);
    const thumbPath = path.join(galleryDir, date, '.thumbnails', filename);
    if (fs.existsSync(thumbPath)) fs.unlinkSync(thumbPath);
    const dirPath = path.join(galleryDir, date);
    if (fs.existsSync(dirPath) && fs.readdirSync(dirPath).filter((f) => f !== '.thumbnails').length === 0) {
      const thumbDir = path.join(galleryDir, date, '.thumbnails');
      if (fs.existsSync(thumbDir)) fs.rmdirSync(thumbDir);
      fs.rmdirSync(dirPath);
    }
    res.json({ message: 'Photo supprimée' });
  } catch (err) {
    console.error(err);
    res.status(500).json({ error: 'Erreur serveur' });
  }
};