/* 当前商品选择页：选套餐 → 选支付方式 → 下单 → 支付 → 自动激活本机 */
const $ = (id) => document.getElementById(id);
let packages = [];
let selected = null;
let orderNo = null;
let pollTimer = null;
let lastPayType = null;   // 记住当前支付方式，「重新下单」时直接复用
let payHelpShown = false;
let helpTipStage = 0;     // 1=30秒提示 2=120秒提示；同阶段不重复覆盖刚点出来的反馈

function esc(s) {
    return String(s == null ? '' : s).replace(/[&<>"']/g, (c) => ({
        '&': '&amp;', '<': '&lt;', '>': '&gt;', '"': '&quot;', "'": '&#39;'
    }[c]));
}

function durationText(days) {
    const n = Number(days);
    if (!n) return '限时体验';
    if (n >= 999999) return '永久有效';
    return n + ' 天';
}

async function loadPackages() {
    $('package-list').innerHTML = '<div class="loading">正在加载当前商品…</div>';
    try {
        const res = await chrome.runtime.sendMessage({ action: 'getCardTypes' });
        if (!res || !res.ok) throw new Error((res && res.message) || '加载失败');
        packages = (res.data || []).filter((p) => Number(p.price) > 0);
        if (!packages.length) {
            $('package-list').innerHTML = '<div class="empty">当前暂无在售商品，请稍后再试</div>';
            return;
        }
        renderPackages();
    } catch (e) {
        $('package-list').innerHTML = '<div class="empty">商品加载失败：' + esc(e.message) + '</div>';
    }
}

function renderPackages() {
    $('package-list').innerHTML = packages.map((p) => `
        <div class="package" data-id="${esc(p.id)}">
            <div class="pkg-name">${esc(p.name)}</div>
            <div class="pkg-price">¥${esc(p.price)}</div>
            <div class="pkg-dur">${esc(durationText(p.duration_days))}</div>
            <button class="pkg-btn" data-id="${esc(p.id)}">选择此商品</button>
        </div>`).join('');
    document.querySelectorAll('.pkg-btn').forEach((btn) => {
        btn.addEventListener('click', () => selectPackage(btn.dataset.id));
    });
}

function selectPackage(id) {
    selected = packages.find((p) => String(p.id) === String(id));
    if (!selected) return;
    document.querySelectorAll('.package').forEach((el) => {
        el.classList.toggle('active', el.dataset.id === String(id));
    });
    $('chosen-package').innerHTML = `已选商品：<b>${esc(selected.name)}</b>　价格 <b>¥${esc(selected.price)}</b>　${esc(durationText(selected.duration_days))}`;
    $('step-pay').hidden = false;
    $('step-pay').scrollIntoView({ behavior: 'smooth', block: 'center' });
}

async function createOrder(payType) {
    if (!selected) return;
    lastPayType = payType;
    $('order-panel').hidden = false;
    $('order-panel').scrollIntoView({ behavior: 'smooth', block: 'center' });
    hidePayHelp();
    const status = $('order-status');
    status.className = 'order-status pending';
    status.textContent = '⏳ 正在创建订单…';
    try {
        const res = await chrome.runtime.sendMessage({
            action: 'authCreateOrder',
            payType,
            cardTypeId: selected.id
        });
        if (!res || !res.ok) throw new Error((res && res.message) || '创建订单失败');

        orderNo = res.order.orderNo;
        status.textContent = `订单 ${orderNo}（¥${res.order.amount}）已创建，正在打开支付页面…`;
        if (res.payUrl) window.open(res.payUrl, '_blank');
        startPolling();
    } catch (e) {
        status.className = 'order-status error';
        status.textContent = '✗ ' + e.message;
    }
}

let attempts = 0;

/** 单次订单查询：5 秒轮询与「立即刷新核对」按钮共用同一段逻辑 */
async function queryOrderOnce() {
    attempts++;
        if (attempts > 240) {
            clearInterval(pollTimer);
            pollTimer = null;
            const status = $('order-status');
            status.className = 'order-status error';
            status.textContent = `✗ 等待支付超时。订单号 ${orderNo}，如已付款请把订单号发给官网客服处理。`;
            return;
        }
        try {
            const res = await chrome.runtime.sendMessage({ action: 'authQueryOrder', orderNo });
            if (!res || !res.ok) return;
            // 只要拿到卡密就先展示出来，不等激活结果——自动激活失败时用户手里必须有码
            if (res.cardKey) showCardBox(res.cardKey, !!res.activated);

            if (res.activated) {
                clearInterval(pollTimer);
                pollTimer = null;
                showActivated(res);
            } else if (res.cardKey) {
                clearInterval(pollTimer);
                pollTimer = null;
                hidePayHelp();
                const status = $('order-status');
                status.className = 'order-status error';
                status.innerHTML = '✗ <b>已支付并已发卡</b>，但自动激活未成功（' +
                    esc(res.message || '本机绑定可能被占用') + '）。请用上方卡密手动激活：回到插件侧边栏 → 卡密输入框粘贴 → 点「粘贴卡密并激活」。<br>' +
                    '订单号：<b>' + esc(orderNo || '') + '</b>';
            } else if (res.paid) {
                // 已付款但服务端还没把卡发出来（最常见原因是卡池库存不足）
                const waited = attempts * 5;
                const status = $('order-status');
                status.className = 'order-status pending';
                status.textContent = '⏳ 已支付，正在为你发卡…（订单 ' + orderNo + '，已等待 ' + waited + ' 秒）';
                if (waited >= 90) {
                    status.className = 'order-status error';
                    status.innerHTML = '⏳ <b>已支付</b>，但发卡耗时较长（已 ' + waited + ' 秒）。订单 <b>' + esc(orderNo) +
                        '</b> 付款状态为已支付，<b>权益不会丢失</b>：继续等会自动发放，或凭此订单号联系客服补发。';
                }
            } else {
                const waited = attempts * 5;
                const status = $('order-status');
                status.className = 'order-status pending';
                status.textContent = '⏳ 等待支付中…（订单 ' + orderNo + '，已等待 ' + waited + ' 秒）';
                // 30 秒还没动静就主动给出口（付款通知丢失 / 扫了过期码 / 实际没扣款）
                if (waited >= 30) showPayHelp(waited);
            }
        } catch (e) {
            /* 单次查询失败不中断轮询 */
        }
}

function startPolling() {
    if (pollTimer) clearInterval(pollTimer);
    attempts = 0;
    hidePayHelp();
    queryOrderOnce(); // 先立刻查一次，不干等 5 秒
    pollTimer = setInterval(queryOrderOnce, 5000);
}

/** 付款迟迟没动静时给出路，别让用户对着「等待支付中」干等 */
function showPayHelp(waited) {
    const box = $('pay-help');
    if (!box) return;
    box.hidden = false;
    payHelpShown = true;
    const tip = $('ph-tip');
    if (!tip) return;
    const stage = waited >= 120 ? 2 : 1;
    if (tip.textContent && stage <= helpTipStage) return; // 不覆盖用户刚点「刷新」得到的反馈
    helpTipStage = stage;
    if (stage === 2) {
        tip.textContent = '已等待 ' + waited + ' 秒仍未确认支付。若你确已完成付款：请勿重复支付，留好订单号 ' +
            (orderNo || '') + ' 与微信/支付宝交易号；若二维码是旧的/已过期，点「重新下单」换一个新码再付。';
    } else {
        tip.textContent = '正在等待付款通知…已完成付款的话，点「立即刷新核对」可以马上重查一次。';
    }
}

function hidePayHelp() {
    const box = $('pay-help');
    if (box) box.hidden = true;
    payHelpShown = false;
    helpTipStage = 0;
    const tip = $('ph-tip');
    if (tip) tip.textContent = '';
}

function wirePayHelp() {
    const rf = $('ph-refresh'), rn = $('ph-renew');
    if (rf) rf.addEventListener('click', async () => {
        const tip = $('ph-tip');
        if (tip) tip.textContent = '正在向授权系统核对…';
        await queryOrderOnce();
        const box = $('pay-help');
        if (!box || box.hidden || !tip) return; // 已出卡激活就不必再提示
        tip.textContent = '已于 ' + new Date().toLocaleTimeString() +
            ' 重新核对：仍未确认支付。若你确已完成付款请勿重复支付（通知可能延迟）；二维码过期就点「重新下单」。';
    });
    if (rn) rn.addEventListener('click', () => {
        if (!selected) {
            const tip = $('ph-tip');
            if (tip) tip.textContent = '请先在上方重新选择套餐，再选支付方式生成新订单。';
            const sp = $('step-package');
            if (sp) sp.scrollIntoView({ behavior: 'smooth', block: 'start' });
            return;
        }
        if (pollTimer) { clearInterval(pollTimer); pollTimer = null; }
        createOrder(lastPayType || 'wxpay');
    });
}

/** 支付成功后立刻把卡密展示给用户（含自动激活失败的场景） */
function showCardBox(key, activated) {
    const box = $('card-box');
    if (!box || !key) return;
    if (!box.hidden && $('cb-key-text').textContent === key) return;
    $('cb-key-text').textContent = key;
    box.hidden = false;
    $('cb-copy-tip').textContent = activated ? '已自动激活本机，这是你的卡密，建议留存' : '';
    box.scrollIntoView({ behavior: 'smooth', block: 'center' });
}

function showActivated(res) {
    hidePayHelp();
    const status = $('order-status');
    const permanent = !!res.isPermanent;
    const exp = String(res.expireTime || '').trim();
    const plan = String(res.planName || '').trim();
    // 绝不默认「永久」：到期时间只在服务端明确给出时才显示
    let expireLine;
    if (permanent) expireLine = '到期时间：<b>永久</b>';
    else if (exp) expireLine = '到期时间：<b>' + esc(exp) + '</b>';
    else if (plan) expireLine = '套餐：<b>' + esc(plan) + '</b>（实际到期时间以插件侧边栏「已授权 · 到期 …」为准）';
    else expireLine = '到期时间：以插件侧边栏显示为准';
    status.className = 'order-status success';
    status.innerHTML = `
        <div class="ok-title">✓ 支付成功，已自动激活</div>
        <div class="ok-line">卡密：<b>${esc(res.cardKey || '')}</b></div>
        <div class="ok-line">${expireLine}</div>
        <div class="ok-line muted">回到插件侧边栏即可使用全部功能（本机已授权）。</div>`;
}

document.querySelectorAll('.pay-btn').forEach((btn) => {
    btn.addEventListener('click', () => createOrder(btn.dataset.pay));
});

// 复制卡密：优先 clipboard API，无权限时降级 execCommand
$('cb-copy') && $('cb-copy').addEventListener('click', async () => {
    const key = ($('cb-key-text').textContent || '').trim();
    if (!key) return;
    let ok = false;
    try {
        await navigator.clipboard.writeText(key);
        ok = true;
    } catch (e) { /* 降级 */ }
    if (!ok) {
        try {
            const ta = document.createElement('textarea');
            ta.value = key;
            ta.style.position = 'fixed';
            ta.style.opacity = '0';
            document.body.appendChild(ta);
            ta.select();
            ok = document.execCommand('copy');
            document.body.removeChild(ta);
        } catch (e2) {
            ok = false;
        }
    }
    $('cb-copy-tip').textContent = ok ? '已复制，可直接粘贴到侧边栏激活' : '复制失败，请手动长按选择卡密';
});

wirePayHelp();
loadPackages();