const express = require("express");
const path = require("path");
const fs = require("fs");
const multer = require("multer");
const Photo = require("../models/Photo");

const router = express.Router();

const uploadsDir = path.join(__dirname, "..", "uploads");
fs.mkdirSync(uploadsDir, { recursive: true });

const storage = multer.diskStorage({
  destination: (req, file, cb) => {
    cb(null, uploadsDir);
  },
  filename: (req, file, cb) => {
    const timestamp = Date.now();
    const safeName = file.originalname.replace(/\s+/g, "-");
    cb(null, `${timestamp}-${safeName}`);
  },
});

const upload = multer({ storage });

router.get("/", async (req, res) => {
  try {
    const filter = {};
    if (req.query.active === "true") {
      filter.active = true;
    }
    const photos = await Photo.find(filter).sort({ createdAt: -1 });
    res.json(photos);
  } catch (error) {
    res.status(500).json({ message: "Failed to fetch photos" });
  }
});

router.post("/", async (req, res) => {
  try {
    const photo = await Photo.create(req.body);
    res.status(201).json(photo);
  } catch (error) {
    res.status(400).json({ message: "Failed to create photo" });
  }
});

router.post("/upload", upload.single("file"), async (req, res) => {
  try {
    if (!req.file) {
      return res.status(400).json({ message: "File is required" });
    }
    const baseUrl = `${req.protocol}://${req.get("host")}`;
    const url = `${baseUrl}/uploads/${req.file.filename}`;
    const photo = await Photo.create({
      url,
      caption: req.body.caption || "",
      active: req.body.active !== "false",
    });
    res.status(201).json(photo);
  } catch (error) {
    res.status(400).json({ message: "Failed to upload photo" });
  }
});

router.delete("/:id", async (req, res) => {
  try {
    const photo = await Photo.findByIdAndDelete(req.params.id);
    if (!photo) {
      return res.status(404).json({ message: "Photo not found" });
    }
    res.json({ ok: true });
  } catch (error) {
    res.status(400).json({ message: "Failed to delete photo" });
  }
});

module.exports = router;