/* 购买授权页：选套餐 → 选支付方式 → 下单 → 支付 → 自动激活 */
const $ = (id) => document.getElementById(id);
let packages = [];
let selected = null;
let orderNo = null;
let pollTimer = null;

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">正在加载套餐…</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">暂无在售套餐，请稍后再试</div>';
            return;
        }
        renderPackages();
    } catch (e) {
        $('package-list').innerHTML = '<div class="empty">套餐加载失败：' + 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)}">选择此套餐</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));
    });
    $('chosen-package').innerHTML = `已选套餐：<b>${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;
    $('order-panel').hidden = false;
    $('order-panel').scrollIntoView({ behavior: 'smooth', block: 'center' });
    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;
        const priceText = res.order.couponCode
            ? `¥${res.order.amount}（原价 ¥${res.order.originalPrice}，已用优惠码 ${res.order.couponCode}）`
            : `¥${res.order.amount}`;
        status.textContent = `订单 ${orderNo}（${priceText}）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;
    }
}

function startPolling() {
    if (pollTimer) clearInterval(pollTimer);
    let attempts = 0;
    pollTimer = setInterval(async () => {
        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客服QQ 1556688283 手动补发。`;
            return;
        }
        try {
            const res = await chrome.runtime.sendMessage({ action: 'authQueryOrder', orderNo });
            if (!res || !res.ok) return;
            if (res.cardKey) {
                // 只要服务端已发卡就把卡密显示出来——哪怕自动激活失败，用户也能自己复制激活
                clearInterval(pollTimer);
                pollTimer = null;
                showCard(res);
            } else {
                const status = $('order-status');
                status.className = 'order-status pending';
                status.textContent = `⏳ 等待支付中…（订单 ${orderNo}，已等待 ${attempts * 5} 秒）`;
            }
        } catch (e) {
            /* 单次查询失败不中断轮询 */
        }
    }, 5000);
}

// 支付成功：显示卡密（激活成功/失败都显示，激活失败时给出手动激活指引）
function showCard(res) {
    const status = $('order-status');
    const ok = !!res.activated;
    status.className = 'order-status ' + (ok ? 'success' : 'error');
    status.innerHTML = ok
        ? `<div class="ok-title">✓ 支付成功，已自动激活本机</div>
           <div class="ok-line">到期时间：${esc(res.expireTime || '永久')}</div>
           <div class="ok-line muted">回到插件侧边栏即可使用全部功能。</div>`
        : `<div class="ok-title">✓ 支付成功</div>
           <div class="ok-line warn">自动激活未生效${(res.licenseState && res.licenseState.message) ? '：' + esc(res.licenseState.message) : ''}</div>
           <div class="ok-line muted">请复制下面的卡密，回到插件侧边栏「输入卡密」框粘贴 → 点「激活」即可。</div>`;

    $('card-key').textContent = res.cardKey || '';
    $('card-hint').textContent = ok
        ? '卡密已随本机自动激活，无需手动输入；保存好可换机或重装后使用。'
        : '本页不会关闭也不会失效，卡密就在这里，随时可以复制。';
    $('card-box').hidden = false;
    $('card-box').scrollIntoView({ behavior: 'smooth', block: 'center' });
}

// 复制卡密（剪贴板 API 失败时降级 execCommand）
$('copy-card').addEventListener('click', async () => {
    const key = ($('card-key').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.cssText = 'position:fixed;left:-9999px';
            document.body.appendChild(ta);
            ta.select();
            ok = document.execCommand('copy');
            ta.remove();
        } catch (e) { ok = false; }
    }
    $('copy-card').textContent = ok ? '✓ 已复制' : '复制失败，请手动选中卡密复制';
    setTimeout(() => { $('copy-card').textContent = '复制卡密'; }, 2500);
});

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

loadPackages();