// 百乐加强买单活动管理弹层，替代 input-bar 中的内联管理脚本。

import { escapeHtml } from "./html.js";

let baccaratLossCoverAdminEventsBound = false;

/**
 * 获取买单活动管理弹层元素。
 *
 * @returns {HTMLElement|null}
 */
function getModal() {
    return document.getElementById("baccarat-loss-cover-admin-modal");
}

/**
 * 获取 CSRF Token。
 *
 * @returns {string}
 */
function csrf() {
    return document.querySelector('meta[name="csrf-token"]')?.content || "";
}

/**
 * 将日期格式化为 datetime-local 输入框需要的值。
 *
 * @param {Date} date 日期对象
 * @returns {string}
 */
function formatDateInput(date) {
    const year = date.getFullYear();
    const month = String(date.getMonth() + 1).padStart(2, "0");
    const day = String(date.getDate()).padStart(2, "0");
    const hour = String(date.getHours()).padStart(2, "0");
    const minute = String(date.getMinutes()).padStart(2, "0");

    return `${year}-${month}-${day}T${hour}:${minute}`;
}

/**
 * 读取弹层 data 属性中由 Blade 注入的接口 URL。
 *
 * @returns {{summaryUrl:string,storeUrl:string,closeUrlTemplate:string}|null}
 */
function resolveAdminUrls() {
    const modal = getModal();
    if (!modal) {
        return null;
    }

    return {
        summaryUrl: modal.dataset.blcSummaryUrl || "",
        storeUrl: modal.dataset.blcStoreUrl || "",
        closeUrlTemplate: modal.dataset.blcCloseUrlTemplate || "",
    };
}

/**
 * 生成关闭活动接口地址。
 *
 * @param {number|string} eventId 活动 ID
 * @returns {string}
 */
function resolveCloseUrl(eventId) {
    const urls = resolveAdminUrls();

    return urls?.closeUrlTemplate.replace("__EVENT__", encodeURIComponent(String(eventId))) || "";
}

/**
 * 安全格式化服务端日期。
 *
 * @param {string|null|undefined} value 日期字符串
 * @returns {string}
 */
function formatServerDate(value) {
    const date = value ? new Date(value) : null;

    return date && !Number.isNaN(date.getTime()) ? date.toLocaleString("zh-CN") : "";
}

/**
 * 加载并渲染当前买单活动状态。
 *
 * @returns {Promise<void>}
 */
export async function loadAdminCurrentLossCoverEvent() {
    const box = document.getElementById("blc-admin-current");
    const urls = resolveAdminUrls();
    if (!box || !urls?.summaryUrl) {
        return;
    }

    box.innerHTML = "正在加载当前活动…";

    try {
        const response = await fetch(urls.summaryUrl, {
            headers: {
                Accept: "application/json",
            },
        });
        const data = await response.json();
        const event = data.event;

        if (!event) {
            box.innerHTML = '<div style="font-size:12px; color:#4b5563;">当前没有进行中、待开始或待领取的买单活动。</div>';
            return;
        }

        // 待开始、进行中和待结算活动允许管理员手动结束，已结束/已关闭状态不再展示按钮。
        const canClose = ["scheduled", "active", "settlement_pending"].includes(event.status);
        const closeButton = canClose
            ? `<button type="button" data-blc-close-current="${Number(event.id)}" style="margin-top:10px; padding:7px 14px; border:none; border-radius:999px; background:#dc2626; color:#fff; font-size:12px; font-weight:bold; cursor:pointer;">立即结束</button>`
            : "";

        // 服务端字段进入 innerHTML 前统一转义，避免活动标题或开启人污染 DOM。
        box.innerHTML = `
            <div style="display:flex; justify-content:space-between; gap:10px; align-items:flex-start;">
                <div style="flex:1;">
                    <div style="font-size:15px; font-weight:bold; color:#166534;">${escapeHtml(String(event.title || ""))}</div>
                    <div style="font-size:12px; color:#4b5563; margin-top:4px;">开启人：${escapeHtml(String(event.creator_username || ""))}</div>
                </div>
                <span style="padding:4px 10px; border-radius:999px; background:#dcfce7; color:#166534; font-size:12px; font-weight:bold;">${escapeHtml(String(event.status_label || ""))}</span>
            </div>
            <div style="margin-top:10px; font-size:12px; color:#4b5563; line-height:1.7;">
                活动时间：${escapeHtml(formatServerDate(event.starts_at))} - ${escapeHtml(formatServerDate(event.ends_at))}<br>
                最终已发补偿：${Number(event.total_claimed_amount || 0).toLocaleString()} 金币
            </div>
            ${closeButton}
        `;
    } catch (error) {
        box.innerHTML = '<div style="font-size:12px; color:#dc2626;">当前活动加载失败，请稍后再试。</div>';
    }
}

/**
 * 打开管理弹层，并填入默认活动时间。
 *
 * @returns {Promise<void>}
 */
export async function openAdminBaccaratLossCoverModal() {
    const modal = getModal();
    if (!modal) {
        return;
    }

    const now = new Date();
    // 默认活动 30 分钟，领奖截止延后 24 小时，便于管理员打开后直接微调。
    const end = new Date(now.getTime() + 30 * 60 * 1000);
    const claimDeadline = new Date(end.getTime() + 24 * 60 * 60 * 1000);

    document.getElementById("blc-admin-starts-at").value = formatDateInput(now);
    document.getElementById("blc-admin-ends-at").value = formatDateInput(end);
    document.getElementById("blc-admin-claim-deadline-at").value = formatDateInput(claimDeadline);
    modal.style.display = "flex";

    await loadAdminCurrentLossCoverEvent();
}

/**
 * 关闭管理弹层。
 *
 * @returns {void}
 */
export function closeAdminBaccaratLossCoverModal() {
    const modal = getModal();
    if (modal) {
        modal.style.display = "none";
    }
}

/**
 * 提交创建买单活动请求。
 *
 * @param {Event} event 表单提交事件
 * @returns {Promise<void>}
 */
export async function submitBaccaratLossCoverEvent(event) {
    event.preventDefault();

    const urls = resolveAdminUrls();
    if (!urls?.storeUrl) {
        return;
    }

    // 前端只收集表单字段；权限、时间范围和字段合法性仍以后端校验为准。
    const payload = {
        title: document.getElementById("blc-admin-title")?.value || "",
        description: document.getElementById("blc-admin-description")?.value || "",
        starts_at: document.getElementById("blc-admin-starts-at")?.value || "",
        ends_at: document.getElementById("blc-admin-ends-at")?.value || "",
        claim_deadline_at: document.getElementById("blc-admin-claim-deadline-at")?.value || "",
    };

    try {
        const response = await fetch(urls.storeUrl, {
            method: "POST",
            headers: {
                "Content-Type": "application/json",
                Accept: "application/json",
                "X-CSRF-TOKEN": csrf(),
            },
            body: JSON.stringify(payload),
        });
        const data = await response.json();

        if (data.ok) {
            await window.chatDialog?.alert(data.message || "活动创建成功", "系统通知", "#16a34a");
            await loadAdminCurrentLossCoverEvent();
            return;
        }

        await window.chatDialog?.alert(data.message || "活动创建失败", "提示", "#f59e0b");
    } catch (error) {
        await window.chatDialog?.alert("活动创建失败，请稍后重试。", "提示", "#dc2626");
    }
}

/**
 * 关闭当前买单活动。
 *
 * @param {number|string} eventId 活动 ID
 * @returns {Promise<void>}
 */
export async function closeCurrentBaccaratLossCoverEvent(eventId) {
    const closeUrl = resolveCloseUrl(eventId);
    if (!closeUrl) {
        return;
    }

    try {
        const response = await fetch(closeUrl, {
            method: "POST",
            headers: {
                Accept: "application/json",
                "X-CSRF-TOKEN": csrf(),
            },
        });
        const data = await response.json();
        await window.chatDialog?.alert(data.message || "活动状态已更新", "系统通知", "#16a34a");
        await loadAdminCurrentLossCoverEvent();
    } catch (error) {
        await window.chatDialog?.alert("活动关闭失败，请稍后重试。", "提示", "#dc2626");
    }
}

/**
 * 绑定买单活动管理弹层事件。
 *
 * @returns {void}
 */
export function bindBaccaratLossCoverAdminControls() {
    if (baccaratLossCoverAdminEventsBound || typeof document === "undefined") {
        return;
    }

    baccaratLossCoverAdminEventsBound = true;
    document.addEventListener("click", (event) => {
        if (!(event.target instanceof Element)) {
            return;
        }

        if (event.target.closest("[data-blc-admin-close]")) {
            event.preventDefault();
            closeAdminBaccaratLossCoverModal();
            return;
        }

        const closeCurrentButton = event.target.closest("[data-blc-close-current]");
        if (closeCurrentButton) {
            event.preventDefault();
            void closeCurrentBaccaratLossCoverEvent(closeCurrentButton.getAttribute("data-blc-close-current") || "");
            return;
        }

        const modal = event.target.closest("#baccarat-loss-cover-admin-modal");
        // 遮罩点击关闭只响应背景层，避免误关内容区。
        if (modal && event.target === modal) {
            closeAdminBaccaratLossCoverModal();
        }
    });

    document.addEventListener("submit", (event) => {
        if (!(event.target instanceof HTMLFormElement) || !event.target.matches("[data-blc-admin-form]")) {
            return;
        }

        void submitBaccaratLossCoverEvent(event);
    });
}