// 订单明细页面JavaScript
class OrderListManager {
    constructor() {
        // 统一从 AppUtils.resolveUserId() 解析
        this.userId = AppUtils.resolveUserId();

        if (!this.userId) {
            alert("未获取到用户ID，请重新登录");
            // 可选：location.href = "login.html";
            return;
        }

        this.lastId = null;
        this.pageSize = 10;
        this.hasMore = true;
        this.loading = false;
        this.currentRefundOrderId = null;

        this.init();
    }

    init() {
        this.bindEvents();
        this.displayUserId();
        this.loadOrderList();
    }

    bindEvents() {
        // 加载更多按钮事件
        document.getElementById("loadMoreBtn").addEventListener("click", () => {
            this.loadOrderList();
        });

        // 退单弹窗事件
        document.getElementById("cancelRefund").addEventListener("click", () => {
            this.hideRefundModal();
        });

        document.getElementById("confirmRefund").addEventListener("click", () => {
            this.processRefund();
        });

        // 点击弹窗外部关闭
        document.getElementById("refundModal").addEventListener("click", (e) => {
            if (e.target.id === "refundModal") {
                this.hideRefundModal();
            }
        });
    }

    displayUserId() {
        const userIdElement = document.getElementById("userIdDisplay");
        if (userIdElement && this.userId) {
            userIdElement.textContent = `用户ID: ${AppUtils.obfuscateUserId(this.userId)}`;
        }
    }

    async loadOrderList() {
        if (this.loading || !this.hasMore) return;

        this.loading = true;
        this.showLoading();

        try {
            const requestData = {
                userId: this.userId,
                lastId: this.lastId,
                pageSize: this.pageSize
            };

            // 调用后端API
            const response = await fetch(
                AppConfig.sPayMallUrl + "/api/v1/alipay/query_user_order_list",
                {
                    method: "POST",
                    headers: { "Content-Type": "application/json" },
                    body: JSON.stringify(requestData)
                }
            );

            const result = await response.json();

            if (result.code === "0000" && result.data) {
                this.renderOrderList(result.data.orderList, this.lastId === null);
                this.hasMore = result.data.hasMore;
                this.lastId = result.data.lastId;

                // 更新加载更多按钮状态
                this.updateLoadMoreButton();
            } else {
                this.showError("加载订单列表失败: " + (result.info || "未知错误"));
            }
        } catch (error) {
            console.error("加载订单列表出错:", error);
            this.showError("网络错误，请稍后重试");
        } finally {
            this.loading = false;
            this.hideLoading();
        }
    }

    renderOrderList(orders, isFirstLoad = false) {
        const orderListElement = document.getElementById("orderList");
        const emptyStateElement = document.getElementById("emptyState");

        if (isFirstLoad) {
            orderListElement.innerHTML = "";
        }

        if (orders && orders.length > 0) {
            emptyStateElement.style.display = "none";

            orders.forEach((order) => {
                const orderElement = this.createOrderElement(order);
                orderListElement.appendChild(orderElement);
            });
        } else if (isFirstLoad) {
            emptyStateElement.style.display = "block";
        }
    }

    createOrderElement(order) {
        const orderDiv = document.createElement("div");
        orderDiv.className = "order-item";
        orderDiv.innerHTML = `
      <div class="order-header">
        <div class="order-id" onclick="orderManager.copyOrderId('${order.orderId}')" title="点击复制订单号">
          订单号: <span class="order-id-text">${order.orderId}</span>
          <span class="copy-icon">📋</span>
        </div>
        <div class="order-status status-${order.status}">${this.getStatusText(order.status)}</div>
      </div>
      <div class="order-content">
        <div class="product-name">${order.productName || "商品名称"}</div>
        <div class="order-details">
          <div class="order-time">${this.formatTime(order.orderTime)}</div>
          <div class="pay-amount">¥${order.payAmount || order.totalAmount}</div>
        </div>
      </div>
      <div class="order-actions">
        <button class="refund-btn"
                onclick="orderManager.showRefundModal('${order.orderId}')"
                ${order.status === "CLOSE" ? "disabled" : ""}>
          ${order.status === "CLOSE" ? "已关闭" : "申请退单"}
        </button>
      </div>
    `;

        return orderDiv;
    }

    getStatusText(status) {
        const statusMap = {
            CREATE: "新创建",
            PAY_WAIT: "等待支付",
            PAY_SUCCESS: "支付成功",
            DEAL_DONE: "交易完成",
            CLOSE: "已关闭",
            WAIT_REFUND: "退款中"
        };
        return statusMap[status] || status;
    }

    formatTime(timeStr) {
        if (!timeStr) return "";
        const date = new Date(timeStr);
        return `${date.getFullYear()}-${String(date.getMonth() + 1).padStart(2, "0")}-${String(
            date.getDate()
        ).padStart(2, "0")} ${String(date.getHours()).padStart(2, "0")}:${String(
            date.getMinutes()
        ).padStart(2, "0")}`;
    }

    updateLoadMoreButton() {
        const loadMoreBtn = document.getElementById("loadMoreBtn");
        if (this.hasMore) {
            loadMoreBtn.style.display = "block";
            loadMoreBtn.disabled = false;
            loadMoreBtn.textContent = "加载更多";
        } else {
            loadMoreBtn.style.display = "none";
        }
    }

    showRefundModal(orderId) {
        this.currentRefundOrderId = orderId;
        document.getElementById("refundModal").style.display = "flex";
    }

    hideRefundModal() {
        document.getElementById("refundModal").style.display = "none";
        this.currentRefundOrderId = null;
    }

    async processRefund() {
        if (!this.currentRefundOrderId) return;

        this.showLoading();

        try {
            const requestData = {
                userId: this.userId,
                orderId: this.currentRefundOrderId
            };

            const response = await fetch(
                AppConfig.sPayMallUrl + "/api/v1/alipay/refund_order",
                {
                    method: "POST",
                    headers: { "Content-Type": "application/json" },
                    body: JSON.stringify(requestData)
                }
            );

            const result = await response.json();

            if (result.code === "0000" && result.data && result.data.success) {
                this.showSuccess("退单成功");
                this.hideRefundModal();
                // 重新加载订单列表
                this.refreshOrderList();
            } else {
                this.showError("退单失败: " + (result.info || result.data?.message || "未知错误"));
            }
        } catch (error) {
            console.error("退单操作出错:", error);
            this.showError("网络错误，请稍后重试");
        } finally {
            this.hideLoading();
        }
    }

    refreshOrderList() {
        this.lastId = null;
        this.hasMore = true;
        document.getElementById("orderList").innerHTML = "";
        this.loadOrderList();
    }

    showLoading() {
        document.getElementById("loadingTip").style.display = "block";
    }

    hideLoading() {
        document.getElementById("loadingTip").style.display = "none";
    }

    showError(message) {
        alert("错误: " + message);
    }

    showSuccess(message) {
        alert("成功: " + message);
    }

    // 复制订单号功能
    copyOrderId(orderId) {
        if (navigator.clipboard) {
            navigator.clipboard
                .writeText(orderId)
                .then(() => {
                    this.showToast("订单号已复制到剪贴板");
                })
                .catch((err) => {
                    console.error("复制失败:", err);
                    this.fallbackCopyTextToClipboard(orderId);
                });
        } else {
            this.fallbackCopyTextToClipboard(orderId);
        }
    }

    // 兼容旧浏览器的复制方法
    fallbackCopyTextToClipboard(text) {
        const textArea = document.createElement("textarea");
        textArea.value = text;
        textArea.style.position = "fixed";
        textArea.style.left = "-999999px";
        textArea.style.top = "-999999px";
        document.body.appendChild(textArea);
        textArea.focus();
        textArea.select();

        try {
            const successful = document.execCommand("copy");
            if (successful) {
                this.showToast("订单号已复制到剪贴板");
            } else {
                this.showToast("复制失败，请手动复制");
            }
        } catch (err) {
            console.error("复制失败:", err);
            this.showToast("复制失败，请手动复制");
        }

        document.body.removeChild(textArea);
    }

    // 显示提示消息
    showToast(message) {
        // 移除已存在的提示
        const existingToast = document.querySelector(".copy-toast");
        if (existingToast) {
            existingToast.remove();
        }

        // 创建新的提示元素
        const toast = document.createElement("div");
        toast.className = "copy-toast";
        toast.textContent = message;
        toast.style.cssText = `
      position: fixed;
      top: 20px;
      left: 50%;
      transform: translateX(-50%);
      background: #333;
      color: white;
      padding: 12px 20px;
      border-radius: 6px;
      z-index: 1000;
      font-size: 14px;
      opacity: 0;
      transition: opacity 0.3s ease;
    `;

        document.body.appendChild(toast);

        // 显示动画
        setTimeout(() => {
            toast.style.opacity = "1";
        }, 100);

        // 3秒后移除
        setTimeout(() => {
            toast.style.opacity = "0";
            setTimeout(() => {
                if (toast.parentNode) {
                    toast.parentNode.removeChild(toast);
                }
            }, 300);
        }, 3000);
    }
}

// 页面加载完成后初始化
let orderManager;
document.addEventListener("DOMContentLoaded", function () {
    orderManager = new OrderListManager();
});