/**
 * Commission center referral link and invited-user records.
 */
(function () {
    'use strict';

    function init(root) {
        var data = window.aksrtData || {};
        if (!root || !data) return;

        var rest = data.restUrl || data.apiUrl || ((data.siteUrl || '').replace(/\/$/, '') + '/wp-json/aksrt/v1');
    if (!rest) return;
    rest = rest.replace(/\/?$/, '');

    function api(path) {
        return fetch(rest + path, {
            credentials: 'same-origin',
            headers: { 'X-WP-Nonce': data.restNonce || data.nonce || '' }
        }).then(function (response) {
            return response.json().catch(function () { return {}; }).then(function (json) {
                return { ok: response.ok, json: json };
            });
        });
    }

    function escapeHtml(value) {
        return String(value == null ? '' : value).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;').replace(/'/g, '&#039;');
    }

    function formatDate(value) {
        if (!value || value === '0000-00-00 00:00:00') return '';
        var date = new Date(String(value).replace(' ', 'T') + 'Z');
        return isNaN(date.getTime()) ? String(value).slice(0, 16) : date.toLocaleString();
    }

    var linkInput = root.querySelector('[data-invite-link]');
    var codeEl = root.querySelector('[data-invite-code]');
    var copyBtn = root.querySelector('[data-invite-copy]');
    var statusEl = root.querySelector('[data-invite-status]');
    var feedbackEl = root.querySelector('[data-invite-copy-feedback]');
    var listEl = root.querySelector('[data-invite-list]');
    var totalEl = root.querySelector('[data-invite-total]');

    function setStatus(text, error) {
        if (!statusEl) return;
        statusEl.textContent = text || '';
        statusEl.classList.toggle('is-error', !!error);
    }

    api('/invite/me').then(function (result) {
        if (!result.ok) {
            setStatus((result.json && result.json.message) || '推广数据加载失败', true);
            return;
        }
        var payload = result.json || {};
        if (linkInput) linkInput.value = payload.invite_url || '';
        if (codeEl) codeEl.textContent = payload.code || '--';
        if (copyBtn) copyBtn.disabled = !payload.invite_url;
        setStatus('推广数据已更新', false);
    }).catch(function () {
        setStatus('推广数据加载失败，请稍后重试', true);
    });

    function renderPagination(total, current) {
        if (!listEl || total <= 10) return;
        var nav = root.querySelector('[data-invite-pagination]');
        if (!nav) {
            nav = document.createElement('nav');
            nav.className = 'uc-reward-pagination';
            nav.setAttribute('data-invite-pagination', 'true');
            nav.setAttribute('aria-label', '邀请记录分页');
            listEl.parentNode.appendChild(nav);
        }
        nav.innerHTML = '';
        var pages = Math.ceil(total / 10);
        for (var page = 1; page <= pages; page++) {
            var url = new URL(window.location.href);
            url.searchParams.set('reward_tab', 'users');
            if (page > 1) url.searchParams.set('invite_page', String(page));
            else url.searchParams.delete('invite_page');
            var link = document.createElement('a');
            link.href = url.toString();
            link.textContent = String(page);
            link.className = page === current ? 'is-active' : '';
            nav.appendChild(link);
        }
    }

    function renderList(payload, page) {
        if (!listEl) return;
        var items = Array.isArray(payload.items) ? payload.items : [];
        var total = Number(payload.total || 0);
        listEl.classList.remove('is-loading');
        if (totalEl) totalEl.textContent = total ? total + ' 条' : '暂无记录';
        if (!items.length) {
            listEl.innerHTML = '<p class="uc-reward-empty">分享链接后，邀请记录会显示在这里。</p>';
            return;
        }
        listEl.innerHTML = items.map(function (item) {
            var name = item.invitee_name || (item.invitee_id ? '用户 #' + item.invitee_id : '受邀用户');
            var avatar = item.invitee_avatar ? '<img src="' + escapeHtml(item.invitee_avatar) + '" alt="">' : '<span>' + escapeHtml(name.charAt(0)) + '</span>';
            var status = item.status === 'rewarded' ? '已奖励' : (item.status === 'verified' ? '已验证' : '已注册');
            return '<article class="uc-invite-record"><span class="uc-invite-record__avatar">' + avatar + '</span><span class="uc-invite-record__main"><strong>' + escapeHtml(name) + '</strong><span>' + escapeHtml(formatDate(item.created_at)) + '</span></span><span class="uc-invite-record__status">' + status + '</span></article>';
        }).join('');
        var currentPage = Number(payload.page || page);
        renderPagination(total, isNaN(currentPage) ? 1 : currentPage);
    }

    if (listEl) {
        var invitePage = 1;
        try {
            var requestedPage = parseInt(new URLSearchParams(window.location.search).get('invite_page') || '1', 10);
            invitePage = isNaN(requestedPage) ? 1 : Math.max(1, requestedPage);
        } catch (_) {}
        api('/invite/list?per_page=10&page=' + invitePage).then(function (result) {
            if (!result.ok) {
                listEl.classList.remove('is-loading');
                listEl.innerHTML = '<p class="uc-reward-empty">邀请记录加载失败，请稍后重试。</p>';
                return;
            }
            renderList(result.json || {}, invitePage);
        }).catch(function () {
            listEl.classList.remove('is-loading');
            listEl.innerHTML = '<p class="uc-reward-empty">邀请记录加载失败，请稍后重试。</p>';
        });
    }

    if (copyBtn && linkInput) {
        copyBtn.addEventListener('click', function () {
            if (!linkInput.value) return;
            var done = function () {
                if (feedbackEl) feedbackEl.textContent = '推广链接已复制';
                copyBtn.disabled = false;
            };
            if (navigator.clipboard && navigator.clipboard.writeText) {
                navigator.clipboard.writeText(linkInput.value).then(done).catch(function () { linkInput.select(); document.execCommand('copy'); done(); });
            } else {
                linkInput.select();
                document.execCommand('copy');
                done();
            }
        });
    }
    function reloadRevenuePanel() {
        var current = document.querySelector('[data-aksrt-revenue-page]');
        if (!current) return Promise.resolve();
        var panelUrl = rest + '/user-center/panel/promotion';
        var query = new URL(window.location.href).searchParams;
        query.delete('tab');
        panelUrl += '?' + query.toString();
        return fetch(panelUrl, {
            credentials: 'same-origin',
            headers: { 'X-WP-Nonce': data.restNonce || data.nonce || '' }
        }).then(function (response) {
            return response.json().then(function (payload) {
                if (!response.ok || !payload.success || !payload.data || !payload.data.html) throw new Error('revenue-refresh-failed');
                var wrapper = document.createElement('div');
                wrapper.innerHTML = payload.data.html;
                var next = wrapper.firstElementChild;
                if (!next) throw new Error('revenue-html-empty');
                current.replaceWith(next);
                window.AKSRTRevenueCenterInit(next);
            });
        });
    }
    }

    function initRewardNavigation(root, rest, data) {
        var rewardTabs = root.querySelectorAll('.uc-reward-tabs a, .uc-reward-pagination a');
        rewardTabs.forEach(function (link) {
            link.addEventListener('click', function (event) {
                event.preventDefault();
                var targetUrl = new URL(link.href, window.location.href);
                var panelUrl = rest + '/user-center/panel/promotion?' + targetUrl.searchParams.toString();
                fetch(panelUrl, {
                    credentials: 'same-origin',
                    headers: { 'X-WP-Nonce': data.restNonce || data.nonce || '' }
                }).then(function (response) {
                    return response.json().then(function (payload) {
                        if (!response.ok || !payload.success || !payload.data || !payload.data.html) throw new Error('revenue-load-failed');
                        var current = document.querySelector('[data-aksrt-revenue-page]');
                        if (!current) return;
                        var wrapper = document.createElement('div');
                        wrapper.innerHTML = payload.data.html;
                        var next = wrapper.firstElementChild;
                        if (!next) throw new Error('revenue-html-empty');
                        current.replaceWith(next);
                        window.history.pushState({}, '', targetUrl);
                        window.AKSRTRevenueCenterInit(next);
                        if (typeof window.AKSRTAffiliatePromotionInit === 'function') window.AKSRTAffiliatePromotionInit();
                        if (typeof window.AKSRTWithdrawInit === 'function') window.AKSRTWithdrawInit();
                    });
                }).catch(function () {
                    if (typeof showToast === 'function') showToast('加载失败，请重试');
                });
            });
        });
    }

    window.AKSRTRevenueCenterInit = function (root) {
        init(root);
        var data = window.aksrtData || {};
        var rest = data.restUrl || data.apiUrl || '';
        if (root && rest) initRewardNavigation(root, rest.replace(/\/$/, ''), data);
    };
    window.AKSRTRevenueCenterInit(document.querySelector('[data-aksrt-revenue-page]'));
})();