// 百乐加强买单活动前台弹窗逻辑，负责活动摘要、历史记录和补偿领取。

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

let baccaratLossCoverEventsBound = false;

/**
 * 获取前台买单活动弹窗。
 *
 * @returns {HTMLElement|null}
 */
function getLossCoverModal() {
    return document.getElementById("baccarat-loss-cover-modal");
}

/**
 * 读取 Blade 注入到弹窗上的接口地址。
 *
 * @returns {{summaryUrl:string,historyUrl:string,claimUrlTemplate:string}|null}
 */
function resolveLossCoverUrls() {
    const modal = getLossCoverModal();
    if (!modal) {
        return null;
    }

    return {
        summaryUrl: modal.dataset.blcSummaryUrl || "",
        historyUrl: modal.dataset.blcHistoryUrl || "",
        claimUrlTemplate: modal.dataset.blcClaimUrlTemplate || "",
    };
}

/**
 * 生成补偿领取接口地址。
 *
 * @param {number|string} eventId 活动 ID
 * @returns {string}
 */
function resolveClaimUrl(eventId) {
    const urls = resolveLossCoverUrls();

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

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

/**
 * 安全格式化活动时间。
 *
 * @param {string|null|undefined} value
 * @returns {string}
 */
function formatTime(value) {
    if (!value) {
        return "—";
    }

    return new Date(value).toLocaleString("zh-CN", {
        month: "2-digit",
        day: "2-digit",
        hour: "2-digit",
        minute: "2-digit",
    });
}

/**
 * 同步当前用户金币到全局上下文和相关展示节点。
 *
 * @param {number} amount
 * @returns {void}
 */
function syncUserGold(amount) {
    if (!Number.isFinite(amount) || !window.chatContext) {
        return;
    }

    window.chatContext.userJjb = Number(window.chatContext.userJjb || 0) + amount;
    window.chatContext.myGold = Number(window.chatContext.myGold || 0) + amount;

    const hallGold = document.getElementById("game-hall-jjb");
    if (hallGold) {
        hallGold.textContent = Number(window.chatContext.userJjb || 0).toLocaleString();
    }

    const modalGold = document.getElementById("blc-modal-jjb");
    if (modalGold) {
        modalGold.textContent = Number(window.chatContext.userJjb || 0).toLocaleString();
    }
}

/**
 * 渲染当前买单活动摘要。
 *
 * @param {object|null} event
 * @returns {void}
 */
function renderCurrentEvent(event) {
    const container = document.getElementById("blc-current-event");
    if (!container) {
        return;
    }

    if (!event) {
        container.innerHTML = `
            <div style="font-size:30px; margin-bottom:10px;">📭</div>
            <div style="font-size:16px; font-weight:bold; color:#166534;">当前暂无进行中的买单活动</div>
            <div style="font-size:12px; color:#4b5563; margin-top:8px;">可以在输入框上方的管理员按钮中创建新活动，也可以在这里查看历史记录。</div>
        `;
        return;
    }

    const myRecord = event.my_record;
    const claimButton = event.status === "claimable" && myRecord?.claim_status === "pending"
        ? `<button type="button" data-blc-claim="${Number(event.id)}" style="padding:8px 18px;border:none;border-radius:999px;background:#16a34a;color:#fff;font-size:12px;font-weight:bold;cursor:pointer;">领取补偿</button>`
        : "";

    // 服务端活动字段进入 HTML 前统一转义，避免标题、说明或用户名污染 DOM。
    container.innerHTML = `
        <div style="display:flex; justify-content:space-between; align-items:flex-start; gap:12px; text-align:left;">
            <div style="flex:1;">
                <div style="font-size:18px; font-weight:900; color:#166534;">${escapeHtml(String(event.title || ""))}</div>
                <div style="font-size:12px; color:#4b5563; margin-top:6px; line-height:1.7;">${escapeHtml(String(event.description || "活动期间参与百家乐，输掉的金币可在活动结束后领取补偿。"))}</div>
            </div>
            <span style="padding:4px 10px; border-radius:999px; background:#dcfce7; color:#166534; font-size:12px; font-weight:bold;">${escapeHtml(String(event.status_label || ""))}</span>
        </div>
        <div style="display:grid; grid-template-columns:repeat(2,1fr); gap:10px; margin-top:16px; text-align:left;">
            <div style="background:#f0fdf4; border-radius:8px; padding:12px;">
                <div style="font-size:11px; color:#6b7280;">开启人</div>
                <div style="font-size:14px; font-weight:bold; color:#166534; margin-top:3px;">${escapeHtml(String(event.creator_username || ""))}</div>
            </div>
            <div style="background:#f0fdf4; border-radius:8px; padding:12px;">
                <div style="font-size:11px; color:#6b7280;">活动时间</div>
                <div style="font-size:13px; font-weight:bold; color:#166534; margin-top:3px;">${escapeHtml(formatTime(event.starts_at))} - ${escapeHtml(formatTime(event.ends_at))}</div>
            </div>
            <div style="background:#f0fdf4; border-radius:8px; padding:12px;">
                <div style="font-size:11px; color:#6b7280;">最终已发补偿</div>
                <div style="font-size:14px; font-weight:bold; color:#166534; margin-top:3px;">${Number(event.total_claimed_amount || 0).toLocaleString()} 金币</div>
            </div>
            <div style="background:#f0fdf4; border-radius:8px; padding:12px;">
                <div style="font-size:11px; color:#6b7280;">我的状态</div>
                <div style="font-size:14px; font-weight:bold; color:#166534; margin-top:3px;">${escapeHtml(String(myRecord?.claim_status_label || "未参与"))}</div>
            </div>
        </div>
        ${myRecord ? `
            <div style="margin-top:16px; background:#fffbeb; border:1px solid #fde68a; border-radius:10px; padding:14px; text-align:left;">
                <div style="font-size:13px; font-weight:bold; color:#a16207; margin-bottom:8px;">我的活动记录</div>
                <div style="display:grid; grid-template-columns:repeat(2,1fr); gap:8px; font-size:12px; color:#4b5563;">
                    <div>累计下注：<b style="color:#166534;">${Number(myRecord.total_bet_amount || 0).toLocaleString()}</b></div>
                    <div>累计输掉：<b style="color:#b91c1c;">${Number(myRecord.total_loss_amount || 0).toLocaleString()}</b></div>
                    <div>可领补偿：<b style="color:#166534;">${Number(myRecord.compensation_amount || 0).toLocaleString()}</b></div>
                    <div>已领补偿：<b style="color:#166534;">${Number(myRecord.claimed_amount || 0).toLocaleString()}</b></div>
                </div>
                ${claimButton ? `<div style="margin-top:12px;">${claimButton}</div>` : ""}
            </div>
        ` : ""}
    `;
}

/**
 * 渲染买单活动历史记录。
 *
 * @param {object[]} events
 * @returns {void}
 */
function renderHistory(events) {
    const container = document.getElementById("blc-history-list");
    if (!container) {
        return;
    }

    if (!events || events.length === 0) {
        container.innerHTML = '<div style="text-align:center;color:#6b7280;padding:24px 0;">暂无活动记录</div>';
        return;
    }

    container.innerHTML = events.map((event) => {
        const myRecord = event.my_record;
        const claimButton = event.status === "claimable" && myRecord?.claim_status === "pending"
            ? `<button type="button" data-blc-claim="${Number(event.id)}" style="padding:6px 14px;border:none;border-radius:999px;background:#16a34a;color:#fff;font-size:12px;font-weight:bold;cursor:pointer;">领取补偿</button>`
            : "";

        return `
            <div style="background:#fff; border:1px solid #dcfce7; border-left:4px solid #16a34a; border-radius:8px; padding:14px;">
                <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 || ""))} ｜ ${escapeHtml(formatTime(event.starts_at))} - ${escapeHtml(formatTime(event.ends_at))}</div>
                    </div>
                    <span style="padding:4px 10px; border-radius:999px; background:#f0fdf4; color:#166534; font-size:12px; font-weight:bold;">${escapeHtml(String(event.status_label || ""))}</span>
                </div>
                <div style="display:grid; grid-template-columns:repeat(2,1fr); gap:8px; margin-top:12px; font-size:12px; color:#4b5563;">
                    <div>最终补偿发放：<b style="color:#166534;">${Number(event.total_claimed_amount || 0).toLocaleString()}</b></div>
                    <div>本次总输金币：<b style="color:#b91c1c;">${Number(event.total_loss_amount || 0).toLocaleString()}</b></div>
                    <div>我的状态：<b style="color:#166534;">${escapeHtml(String(myRecord?.claim_status_label || "未参与"))}</b></div>
                    <div>我的可领：<b style="color:#166534;">${Number(myRecord?.compensation_amount || 0).toLocaleString()}</b></div>
                </div>
                ${myRecord ? `<div style="margin-top:8px; font-size:12px; color:#6b7280;">累计下注 ${Number(myRecord.total_bet_amount || 0).toLocaleString()} ｜ 累计输掉 ${Number(myRecord.total_loss_amount || 0).toLocaleString()} ｜ 已领 ${Number(myRecord.claimed_amount || 0).toLocaleString()}</div>` : ""}
                ${claimButton ? `<div style="margin-top:10px;">${claimButton}</div>` : ""}
            </div>
        `;
    }).join("");
}

/**
 * 加载当前活动摘要。
 *
 * @returns {Promise<void>}
 */
async function loadSummary() {
    const current = document.getElementById("blc-current-event");
    const urls = resolveLossCoverUrls();
    if (!current || !urls?.summaryUrl) {
        return;
    }

    current.innerHTML = "加载中…";

    try {
        const response = await fetch(`${urls.summaryUrl}?scene=overview`, {
            headers: {
                Accept: "application/json",
            },
        });
        const data = await response.json();
        renderCurrentEvent(data.event || null);
    } catch (error) {
        current.innerHTML = '<div style="color:#dc2626;">活动摘要加载失败，请稍后重试。</div>';
    }
}

/**
 * 加载活动历史记录。
 *
 * @returns {Promise<void>}
 */
async function loadHistory() {
    const list = document.getElementById("blc-history-list");
    const urls = resolveLossCoverUrls();
    if (!list || !urls?.historyUrl) {
        return;
    }

    list.innerHTML = "加载中…";

    try {
        const response = await fetch(urls.historyUrl, {
            headers: {
                Accept: "application/json",
            },
        });
        const data = await response.json();
        renderHistory(data.events || []);
    } catch (error) {
        list.innerHTML = '<div style="color:#dc2626;">活动历史加载失败，请稍后重试。</div>';
    }
}

/**
 * 切换买单活动弹窗 Tab。
 *
 * @param {string} tab
 * @returns {void}
 */
export function switchBaccaratLossCoverTab(tab) {
    const overview = document.getElementById("blc-overview-pane");
    const history = document.getElementById("blc-history-pane");
    const overviewButton = document.getElementById("blc-tab-overview");
    const historyButton = document.getElementById("blc-tab-history");

    if (!overview || !history || !overviewButton || !historyButton) {
        return;
    }

    const showingHistory = tab === "history";
    overview.style.display = showingHistory ? "none" : "block";
    history.style.display = showingHistory ? "block" : "none";
    overviewButton.style.background = showingHistory ? "#dcfce7" : "#15803d";
    overviewButton.style.color = showingHistory ? "#166534" : "#fff";
    historyButton.style.background = showingHistory ? "#15803d" : "#dcfce7";
    historyButton.style.color = showingHistory ? "#fff" : "#166534";
}

/**
 * 打开买单活动前台弹窗。
 *
 * @param {string} [tab]
 * @returns {Promise<void>}
 */
export async function openBaccaratLossCoverModal(tab = "overview") {
    const modal = getLossCoverModal();
    if (!modal) {
        return;
    }

    modal.style.display = "flex";

    const modalGold = document.getElementById("blc-modal-jjb");
    if (modalGold) {
        modalGold.textContent = Number(window.chatContext?.userJjb || 0).toLocaleString();
    }

    switchBaccaratLossCoverTab(tab);
    await Promise.all([loadSummary(), loadHistory()]);
}

/**
 * 关闭买单活动前台弹窗。
 *
 * @returns {void}
 */
export function closeBaccaratLossCoverModal() {
    const modal = getLossCoverModal();
    if (modal) {
        modal.style.display = "none";
    }
}

/**
 * 领取买单活动补偿。
 *
 * @param {number|string} eventId
 * @returns {Promise<void>}
 */
export async function claimBaccaratLossCover(eventId) {
    const claimUrl = resolveClaimUrl(eventId);
    if (!claimUrl) {
        return;
    }

    try {
        const response = await fetch(claimUrl, {
            method: "POST",
            headers: {
                "X-CSRF-TOKEN": csrf(),
                Accept: "application/json",
            },
        });
        const data = await response.json();

        if (data.ok) {
            syncUserGold(Number(data.amount || 0));
            await window.chatDialog?.alert?.(data.message || "补偿领取成功", "系统通知", "#16a34a");
            await Promise.all([loadSummary(), loadHistory()]);
            return;
        }

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

/**
 * 绑定买单活动前台弹窗关闭、Tab 切换与领取按钮事件。
 *
 * @returns {void}
 */
export function bindBaccaratLossCoverControls() {
    if (baccaratLossCoverEventsBound || typeof document === "undefined") {
        return;
    }

    baccaratLossCoverEventsBound = true;

    window.openBaccaratLossCoverModal = openBaccaratLossCoverModal;
    window.closeBaccaratLossCoverModal = closeBaccaratLossCoverModal;
    window.switchBaccaratLossCoverTab = switchBaccaratLossCoverTab;
    window.claimBaccaratLossCover = claimBaccaratLossCover;

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

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

        const tabButton = event.target.closest("[data-blc-tab]");
        if (tabButton) {
            event.preventDefault();
            switchBaccaratLossCoverTab(tabButton.getAttribute("data-blc-tab") || "overview");
            return;
        }

        const claimButton = event.target.closest("[data-blc-claim]");
        if (claimButton) {
            event.preventDefault();
            void claimBaccaratLossCover(claimButton.getAttribute("data-blc-claim") || "");
            return;
        }

        const modal = event.target.closest("#baccarat-loss-cover-modal");
        if (modal && event.target === modal) {
            closeBaccaratLossCoverModal();
        }
    });
}