var express = require("express");
var router = express.Router();
var db = require("../models");
const stripe = require("stripe")(process.env.STRIPE_TEST_KEY); // Replace with your Stripe test secret key

/* GET home page. */
router.get("/", async function (req, res, next) {
  try {
    const products = await db.product.findAll();
    res.render("index", { title: "Products", products });
  } catch (err) {
    next(err);
  }
});

router.get("/product/:id", async function (req, res, next) {
  try {
    const product = await db.product.findByPk(req.params.id);
    if (!product) return res.status(404).send("Product not found");
    res.render("product", { title: product.title, product });
  } catch (err) {
    next(err);
  }
});

router.post("/buy/:id", async function (req, res, next) {
  try {
    const product = await db.product.findByPk(req.params.id);
    if (!product) return res.status(404).send("Product not found");
    const session = await stripe.checkout.sessions.create({
      payment_method_types: ["card"],
      line_items: [
        {
          price_data: {
            currency: "usd",
            product_data: {
              name: product.title,
              images: product.image ? [product.image] : [],
            },
            unit_amount: Math.round(product.price * 100),
          },
          quantity: 1,
        },
      ],
      mode: "payment",
      success_url:
        req.protocol +
        "://" +
        req.get("host") +
        "/success?session_id={CHECKOUT_SESSION_ID}",
      cancel_url:
        req.protocol + "://" + req.get("host") + "/product/" + product.id,
    });
    res.redirect(303, session.url);
  } catch (err) {
    next(err);
  }
});

router.get("/success", async function (req, res, next) {
  try {
    const session_id = req.query.session_id;
    if (!session_id) return res.status(400).send("Missing session ID");
    const session = await stripe.checkout.sessions.retrieve(session_id);
    // Find or create order
    let order = await db.order.findOne({ where: { stripe_id: session.id } });
    if (!order) {
      // Get product_id from session metadata or line_items
      const lineItems = await stripe.checkout.sessions.listLineItems(
        session.id,
        { limit: 1 }
      );
      const productName =
        lineItems.data[0].description || lineItems.data[0].price.product;
      const dbProduct = await db.product.findOne({
        where: { title: productName },
      });
      await db.order.create({
        product_id: dbProduct ? dbProduct.id : null,
        total: session.amount_total,
        stripe_id: session.id,
        status: session.payment_status === "paid" ? 1 : 0,
      });
    }
    res.render("success", { title: "Thank You", session });
  } catch (err) {
    next(err);
  }
});

router.get("/create-product", function (req, res) {
  res.render("create-product", { title: "Add Product" });
});

router.post("/create-product", async function (req, res, next) {
  try {
    const { title, description, price, image } = req.body;
    if (!title || !description || !price) {
      return res
        .status(400)
        .render("create-product", {
          title: "Add Product",
          error: "All fields except image are required.",
        });
    }
    await db.product.create({ title, description, price, image });
    res.redirect("/");
  } catch (err) {
    next(err);
  }
});

module.exports = router;