function checkUID(m = "") {
    const userData = JSON.parse(localStorage.getItem("userData")) || {};
    const urlNow = window.location.href;
    const isNotValidUID = userData.length > 0 && !userData.uid;

    const message =
        m === "addToCart"
            ? "Silakan masuk terlebih dahulu untuk menambahkan produk ke keranjang."
            : isNotValidUID
            ? "Sesi Anda telah habis. Silakan masuk kembali untuk melanjutkan."
            : m === "jelajah"
            ? "Anda telah menjelajah selama 5 detik. Silakan masuk terlebih dahulu untuk mendapatkan pengalaman yang lebih baik."
            : null;

    if (
        (Object.keys(userData).length === 0 || isNotValidUID) &&
        !urlNow.includes("profile")
    ) {
        localStorage.clear();
        window.location.href =
            `profile.html?redirect=${urlNow}` +
            (message ? `&message=${message}` : "");
    }
}

setTimeout(() => {
    checkUID("jelajah");
}, 5000);

function formatRupiah(number) {
    return "Rp " + number.toLocaleString("id-ID");
}

async function loadProducts() {
    const products = await fetchProductsData();

    const productList = document.getElementById("product-list");
    if (!productList) return;
    productList.innerHTML = "";
    products.forEach((product) => {
        const col = document.createElement("div");
        col.className = "col-lg-3 col-md-4 col-sm-6";

        const card = document.createElement("div");
        card.className = "card h-100";

        let thumbnail = "assets/";
        if (product.files && product.files.length > 0) {
            thumbnail += product.files[0];
        }
        let thumbHTML = "";
        if (thumbnail.match(/\.(jpg|jpeg|png|gif)$/i)) {
            thumbHTML = `<img src="${thumbnail}" class="card-img-top" alt="${product.name}">`;
        } else {
            thumbHTML = `<img src="img/placeholder.jpg" class="card-img-top" alt="${product.name}">`;
        }

        const cardBody = document.createElement("div");
        cardBody.className = "card-body d-flex flex-column";

        const title = document.createElement("h5");
        title.className = "card-title";
        title.innerText = product.name;

        const desc = document.createElement("p");
        desc.className = "card-text";
        desc.innerText = product.description;

        const price = document.createElement("p");
        price.className = "card-text fw-bold";
        price.innerText = formatRupiah(product.price);

        const detailLink = document.createElement("a");
        detailLink.href = "product.html?id=" + product.id;
        detailLink.className = "btn btn-primary btn-lg mt-auto";
        detailLink.innerText = "Lihat Detail";

        const cartBtn = document.createElement("button");
        cartBtn.className = "btn btn-success btn-lg mt-2";
        cartBtn.innerText = "Tambah Keranjang";
        cartBtn.onclick = async function () {
            await promptQuantityAndAdd(product.id);
        };

        card.innerHTML = thumbHTML;
        cardBody.appendChild(title);
        cardBody.appendChild(desc);
        cardBody.appendChild(price);
        cardBody.appendChild(detailLink);
        cardBody.appendChild(cartBtn);
        card.appendChild(cardBody);
        col.appendChild(card);
        productList.appendChild(col);
    });
}

async function loadProductDetail() {
    const params = new URLSearchParams(window.location.search);
    const productId = parseInt(params.get("id"));
    const container = document.getElementById("product-detail");
    if (!container) return;

    if (!productId) {
        container.innerText = "Produk tidak ditemukan.";
        return;
    }

    const products = await fetchProductsData();
    const product = products.find((p) => p.id === productId);
    if (!product) {
        container.innerText = "Produk tidak ditemukan.";
        return;
    }
    let carouselHTML = "";
    if (product.files && product.files.length > 0) {
        carouselHTML += `<div id="carouselProduct" class="carousel slide" data-bs-ride="carousel">`;
        carouselHTML += `<div class="carousel-indicators">`;
        product.files.forEach((file, index) => {
            carouselHTML += `<button type="button" data-bs-target="#carouselProduct" data-bs-slide-to="${index}" ${
                index === 0 ? 'class="active" aria-current="true"' : ""
            } aria-label="Slide ${index + 1}"></button>`;
        });
        carouselHTML += `</div>`;
        carouselHTML += `<div class="carousel-inner">`;
        product.files.forEach((file, index) => {
            file = "assets/" + file;
            carouselHTML += `<div class="carousel-item ${
                index === 0 ? "active" : ""
            }">`;
            if (file.match(/\.(jpg|jpeg|png|gif)$/i)) {
                carouselHTML += `<img src="${file}" class="d-block w-100" alt="${product.name}">`;
            } else if (file.match(/\.(mp4|webm)$/i)) {
                carouselHTML += `<video class="d-block w-100" controls>
							<source src="${file}" type="video/mp4">
							Browser Anda tidak mendukung video.
						  </video>`;
            }
            carouselHTML += `</div>`;
        });
        carouselHTML += `</div>`;
        carouselHTML += `<button class="carousel-control-prev" type="button" data-bs-target="#carouselProduct" data-bs-slide="prev">
						  <span class="carousel-control-prev-icon bg-primary rounded-circle p-4" aria-hidden="true"></span>
						  <span class="visually-hidden">Previous</span>
						</button>
						<button class="carousel-control-next" type="button" data-bs-target="#carouselProduct" data-bs-slide="next">
						  <span class="carousel-control-next-icon bg-primary rounded-circle p-4" aria-hidden="true"></span>
						  <span class="visually-hidden">Next</span>
						</button>`;
        carouselHTML += `</div>`;
    }
    container.innerHTML = `
	  <div class="row">
		<div class="col-md-6">
		  ${carouselHTML}
		</div>
		<div class="col-md-6">
		  <h2>${product.name}</h2>
		  <p>${product.description}</p>
		  <h4 class="fw-bold">${formatRupiah(product.price)}</h4>
		  <div class="mb-2">
			<label for="quantity" class="form-label">Jumlah:</label>
			<input type="number" id="quantity" class="form-control form-control-lg" value="1" min="1" style="max-width:150px;">
		  </div>
		  <button class="btn btn-success btn-lg" onclick="addToCartFromProduct(${
              product.id
          })">
			Tambahkan ke Keranjang
		  </button>
		</div>
	  </div>
	`;
    AOS.refresh();
}

function formatTransactionDate(key) {
    const parts = key.split("_");
    if (parts.length !== 7) return key;

    const [year, month, day, hour, minute, second, ms] = parts;

    const dateObj = new Date(
        year,
        parseInt(month) - 1,
        day,
        hour,
        minute,
        second,
        ms
    );

    const formattedDate = dateObj.toLocaleDateString("id-ID", {
        day: "2-digit",
        month: "long",
        year: "numeric",
    });

    const formattedTime = dateObj.toLocaleTimeString("id-ID", {
        hour: "2-digit",
        minute: "2-digit",
        hour12: false,
    });

    return [formattedDate, formattedTime];
}

async function loadTransactions() {
    const userData = await getUserData() || {transactions: {}};
    const transactions = userData.transactions || {};

    if (Object.keys(transactions).length === 0) {
        document.getElementById("transaction-list").innerHTML =
            "<p>Anda belum melakukan transaksi apapun. Silahkan beli produk terlebih dahulu.</p>";
        alert("Anda belum melakukan transaksi apapun. Silahkan beli produk terlebih dahulu.", false)
        return;
    }

    const transactionList = document.getElementById("transaction-list");
    if (!transactionList) return;
    transactionList.innerHTML = "";

    Object.entries(transactions)
        .sort((a, b) => {
            const parseDateFromKey = (key) => {
                const [year, month, day, hour, minute, second, ms] =
                    key.split("_");
                return new Date(year, month - 1, day, hour, minute, second, ms);
            };

            return parseDateFromKey(b[0]) - parseDateFromKey(a[0]);
        })
        .forEach(([transactionKey, transaction]) => {
            let total = 0;

            transaction.products.forEach((product) => {
                total += product.price * product.total;
            });

            let paymentIcon = "";
            switch (transaction.payment_method) {
                case "bank":
                    paymentIcon = "bi-building";
                    break;
                case "qr":
                    paymentIcon = "bi-qr-code";
                    break;
                case "card":
                    paymentIcon = "bi-credit-card";
                    break;
                default:
                    paymentIcon = "bi-currency-dollar";
            }

            const col = document.createElement("div");
            col.className =
                "transactions-body col-lg-4 col-md-6 col-sm-12 mt-4";

            const card = document.createElement("div");
            card.className = "card h-100";

            const cardBody = document.createElement("div");
            cardBody.className = "card-body d-flex flex-column";

            cardBody.style.position = "relative";

            const td = formatTransactionDate(transactionKey);

            cardBody.innerHTML = `
		  <div class="payment-icon-bg">
			<i class="bi ${paymentIcon}" style="font-size: 2.5rem;"></i>
			<span class="m-2">Metode: ${
                transaction.payment_method ? transaction.payment_method : "N/A"
            }</span>
		  </div>
		  <div class="content">
			<div class="d-flex justify-content-between align-items-center">
			  <div class="transaction-total fw-bold">
				Total: ${formatRupiah(total)}
			  </div>
			</div>
			<div class="d-flex justify-content-between align-items-center mt-auto">
			  <div class="transaction-date">
				Tanggal: ${td[0]} <br> Waktu: ${td[1]}
			  </div>
			</div>
		  </div>
		`;

            card.appendChild(cardBody);
            col.appendChild(card);
            transactionList.appendChild(col);

            col.addEventListener(
                "click",
                () =>
                    (window.location.href = `transaction.html?date=${transactionKey}`)
            );
        });
}

let transactionKey;

async function updateActionButtonsPosition() {
    const wrapper = document.querySelector(".receipt-wrapper");
    const actionButtons = document.querySelector(".action-buttons");
    if (!wrapper || !actionButtons) {
        console.error("Element tidak ditemukan!");
        return;
    }

    const receiptHeight = wrapper.getBoundingClientRect().height + 128;
    actionButtons.setAttribute("style", `top: ${receiptHeight}px !important`);
}

async function loadTransactionDetail() {
    const params = new URLSearchParams(window.location.search);
    const transactionKey = params.get("date");
    const detailsContainer = document.getElementById("transaction-details");
    const mainElement = document.querySelector("main");

    if (!transactionKey) {
        detailsContainer.innerHTML = "<p>Transaksi tidak ditemukan.</p>";
        return;
    }

    const userData = await getUserData();

    if (!userData.transactions || !userData.transactions[transactionKey]) {
        mainElement.innerHTML = "<p>Transaksi tidak ditemukan.</p>";
        return;
    }

    const transaction = userData.transactions[transactionKey];

    const td = formatTransactionDate(transactionKey);

    let total = 0;
    transaction.products.forEach((prod) => {
        total += prod.price * prod.total;
    });

    let html = `
    <div class="receipt-header">
      <h2>TonS E-Commerce</h2>
      <hr>
      <p>Sidoarjo</p>
      <p>Telp: 0896-6804-1554</p>
      <p>Tanggal: ${td[0]} ${td[1]}</p>
    </div>
    <table class="receipt-table">
      <thead>
        <tr>
          <th>No</th>
          <th>Produk</th>
          <th>Harga</th>
          <th>Qty</th>
          <th>Subtotal</th>
        </tr>
      </thead>
      <tbody>
  `;

    transaction.products.forEach((prod, index) => {
        const qty = prod.total;
        const subtotal = prod.price * qty;
        html += `
      <tr>
        <td>${index + 1}</td>
        <td>${prod.name}</td>
        <td>${formatRupiah(prod.price)}</td>
        <td>${qty}</td>
        <td>${formatRupiah(subtotal)}</td>
      </tr>
    `;
    });

    html += `
      <tr class="total-row">
        <td colspan="4" class="text-end"><strong>Total</strong></td>
        <td><strong>${formatRupiah(total)}</strong></td>
      </tr>
      </tbody>
    </table>
    <div class="receipt-footer">
      <p>Terima kasih telah berbelanja di TonS</p>
      <p>Harap simpan struk ini sebagai bukti pembelian</p>
    </div>
  `;

    detailsContainer.innerHTML = html;

    const wrapper = document.createElement("div");
    wrapper.className = "receipt-wrapper";
    wrapper.innerHTML = detailsContainer.innerHTML;
    detailsContainer.innerHTML = "";
    detailsContainer.appendChild(wrapper);

    await updateActionButtonsPosition();

    window.addEventListener("resize", async () => {
        requestAnimationFrame(updateActionButtonsPosition);
    });
}

document.addEventListener("DOMContentLoaded", async function () {
    AOS.init();

    if (document.getElementById("product-list")) {
        loadProducts();
    }

    if (document.getElementById("product-detail")) {
        loadProductDetail();
    }

    if (document.getElementById("transaction-details")) {
        await loadTransactionDetail();

        await updateActionButtonsPosition();

        window.addEventListener("resize", async () => {
            requestAnimationFrame(updateActionButtonsPosition);
        });

        document
            .getElementById("download-pdf")
            .addEventListener("click", async () => {
                const mainElement = document.getElementById(
                    "transaction-details"
                );
                const receiptWrapperElement =
                    document.querySelector(".receipt-wrapper");

                const widthElement =
                    receiptWrapperElement.offsetWidth -
                    receiptWrapperElement.offsetLeft;
                const heightElement =
                    receiptWrapperElement.offsetHeight -
                    receiptWrapperElement.offsetTop;

                const params = new URLSearchParams(window.location.search);
                const transactionKey = params.get("date");

                try {
                    await html2pdf()
                        .from(mainElement)
                        .set({
                            margin: 10,
                            filename: `receipt_${transactionKey}.pdf`,
                            image: { type: "png", quality: 3 },
                            html2canvas: { scale: 3, useCORS: true },
                            jsPDF: {
                                unit: "px",
                                format: [widthElement, heightElement],
                                orientation: "portrait",
                            },
                        })
                        .toPdf()
                        .save();
                } catch (error) {
                    console.error("Error generating PDF:", error);
                }
            });

        document
            .getElementById("print-receipt")
            .addEventListener("click", async () => {
                const mainElement = document.getElementById(
                    "transaction-details"
                );

                const lastMainElement = mainElement.innerHTML;

                mainElement.innerHTML += `
				<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css">
				<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons/font/bootstrap-icons.css">
				<link rel="stylesheet" href="https://unpkg.com/aos@2.3.1/dist/aos.css" />
				<script src="https://printjs-4de6.kxcdn.com/print.min.css"></script>
				<link rel="stylesheet" href="stylesheet/styles.css">

				<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/js/bootstrap.bundle.min.js" defer></script>
				<script src="https://cdnjs.cloudflare.com/ajax/libs/html2pdf.js/0.9.2/html2pdf.bundle.min.js"></script>
				<script src="https://cdnjs.cloudflare.com/ajax/libs/html-to-image/1.11.13/html-to-image.js"></script>
				<script src="https://unpkg.com/aos@2.3.1/dist/aos.js" defer></script>
				<script src="https://printjs-4de6.kxcdn.com/print.min.js"></script>
			`;

                await printJS("transaction-details", "html");

                mainElement.innerHTML = lastMainElement;
            });
    }

    if (document.getElementById("transaction-list")) {
        loadTransactions();
    }

    let backButton = document.getElementById("backButton");
    if (backButton) {
        backButton.addEventListener("click", (e) => {
            e.preventDefault();
            window.history.back();
        });
    }
});