/**
 * AKSRT Credits Frontend
 *
 * 功能：
 *   - 签到 panel：拉取 /signin/today，按钮触发 POST /signin
 *   - 邀请 panel：拉取 /invite/me，复制邀请链接
 *
 * 仅在 page-profile 页面 + 启用积分时加载。
 */
(function () {
	'use strict';

	var aksrt = window.aksrtData;
	if (!aksrt || !aksrt.siteUrl) {
		return;
	}

	// 协议修正：页面是 HTTPS 但 siteUrl 是 HTTP 时，强制使用 HTTPS（避免混合内容拦截）
	var siteUrl = aksrt.siteUrl;
	if (window.location.protocol === 'https:' && siteUrl.substring(0, 5) === 'http:') {
		siteUrl = 'https:' + siteUrl.substring(5);
	}

	var REST = siteUrl.replace(/\/$/, '') + '/wp-json/aksrt/v1';
	var NONCE_HEADER = aksrt.restNonce ? { 'X-WP-Nonce': aksrt.restNonce } : (aksrt.nonce ? { 'X-WP-Nonce': aksrt.nonce } : {});

	function api(path, options) {
		var merged = Object.assign({
			credentials: 'same-origin',
			headers: Object.assign({ 'Content-Type': 'application/json' }, NONCE_HEADER),
		}, options || {});
		return fetch(REST + path, merged).then(function (r) {
			// 401 时去掉 nonce 重试（页面缓存可能导致 nonce 过期，GET 请求可用 cookie 认证）
			if (r.status === 401 && (!options || !options.method || options.method === 'GET')) {
				var retry = Object.assign({}, merged, {
					headers: { 'Content-Type': 'application/json' }
				});
				return fetch(REST + path, retry).then(function (r2) {
					return r2.json().catch(function () {
						return { message: '服务器返回了非 JSON 响应 (HTTP ' + r2.status + ')' };
					}).then(function (j) { return { ok: r2.ok, status: r2.status, json: j }; });
				});
			}
			return r.json().catch(function () {
				return { message: '服务器返回了非 JSON 响应 (HTTP ' + r.status + ')' };
			}).then(function (j) { return { ok: r.ok, status: r.status, json: j }; });
		});
	}

	// ===== 签到 =====
	function initSignin() {
		var root = document.querySelector('[data-aksrt-signin]');
		if (!root) return;
		var status = root.querySelector('[data-signin-status]');
		var btn = root.querySelector('[data-signin-btn]');
		var tip = root.querySelector('[data-signin-tip]');
		if (!btn) return;

		function setStatus(text) { if (status) status.textContent = text; }
		function setStatusHtml(html) { if (status) status.innerHTML = html; }
		function setTip(text) { if (tip) tip.textContent = text; }

		function refresh() {
			api('/signin/today').then(function (r) {
				if (!r.ok) {
					setStatus((r.json && r.json.message) || '加载失败 (HTTP ' + r.status + ')');
					return;
				}
				var j = r.json;
				if (!j.enabled) {
					setStatus('签到功能未启用');
					btn.disabled = true;
					setTip('');
					return;
				}
				if (j.signed) {
					setStatusHtml('已签到 <strong>' + j.streak + '</strong> 天 +' + j.reward_today);
					btn.disabled = true;
					btn.innerHTML = '已签到';
					setTip('');
				} else {
					setStatusHtml('连续 <strong>' + j.streak + '</strong> 天，+' + j.reward_if_signin);
					btn.disabled = false;
					setTip('');
				}
			}).catch(function (err) {
				if (window.console) console.error('[AKSRT Credits] /signin/today 请求失败:', err);
				setStatus('加载失败，请刷新重试');
			});
		}

		function collectCaptcha() {
			var el = document.querySelector('[data-signin-captcha]');
			if (!el) return {};
			var out = {};
			var keys = [
				'captcha_verified', 'cf_turnstile_response',
				'tencent_ticket', 'tencent_randstr', 'tencent_sid',
				'geetest_lot_number', 'geetest_captcha_output', 'geetest_pass_token', 'geetest_gen_time',
				'aliyun_captcha_verify_param',
			];
			keys.forEach(function (k) {
				var inp = el.querySelector('input[name="' + k + '"]');
				if (inp && inp.value !== '') out[k] = inp.value;
			});
			return out;
		}

		function resetCaptcha() {
			try {
				var state = window.AKSRTCaptchaState;
				var scene = state && state.scenes && state.scenes.signin;
				if (scene && typeof scene.reset === 'function') scene.reset();
			} catch (_) {}
		}

		function triggerCaptcha(callback) {
			var state = window.AKSRTCaptchaState;
			var scene = state && state.scenes && state.scenes.signin;
			if (scene && typeof scene.verify === 'function') {
				scene.verify(callback);
				return;
			}
			callback();
		}

		btn.addEventListener('click', function () {
			btn.disabled = true;
			btn.innerHTML = '…';
			setTip('');

			var captchaDone = false;
			var timeoutId = setTimeout(function () {
				if (!captchaDone) {
					captchaDone = true;
					doSignin();
				}
			}, 30000);

			triggerCaptcha(function () {
				clearTimeout(timeoutId);
				if (captchaDone) return;
				captchaDone = true;
				doSignin();
			});

			function doSignin() {
				api('/signin', {
					method: 'POST',
					body: JSON.stringify({ captcha: collectCaptcha() })
				}).then(function (r) {
					if (!r.ok) {
						resetCaptcha();
						setTip((r.json && r.json.message) || '签到失败');
						btn.disabled = false;
						btn.innerHTML = '签到';
						return;
					}
					setTip('签到成功，获得 ' + r.json.reward + ' 积分（连续 ' + r.json.streak + ' 天）');
					var balanceEls = document.querySelectorAll('[data-credits-value]');
					balanceEls.forEach(function (el) { el.textContent = r.json.balance.toLocaleString(); });
					refresh();
				}).catch(function () {
					resetCaptcha();
					setTip('网络错误，请重试');
					btn.disabled = false;
					btn.innerHTML = '签到';
				});
			}
		});

		refresh();
	}

	// ===== 邀请 =====
	function initInvite() {
		var root = document.querySelector('[data-aksrt-invite]');
		if (!root) return;
		var linkInput = root.querySelector('[data-invite-link]');
		var copyBtn = root.querySelector('[data-invite-copy]');
		var stats = root.querySelector('[data-invite-stats]');
		var codeEl = root.querySelector('[data-invite-code]');
		var listEl = root.querySelector('[data-invite-list]');
		var totalEl = root.querySelector('[data-invite-total]');

		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');
			if (isNaN(date.getTime())) return String(value).slice(0, 16);
			function pad(n) { return n < 10 ? '0' + n : String(n); }
			return date.getFullYear() + '-' + pad(date.getMonth() + 1) + '-' + pad(date.getDate()) + ' ' + pad(date.getHours()) + ':' + pad(date.getMinutes());
		}

		function statusMeta(status) {
			if (status === 'rewarded') {
				return { label: '已奖励', text: '奖励已发放', className: 'is-rewarded' };
			}
			if (status === 'verified') {
				return { label: '已验证', text: '等待奖励发放', className: 'is-verified' };
			}
			return { label: '已注册', text: '等待完成验证', className: 'is-registered' };
		}

		function setCopyText(text) {
			if (!copyBtn) return;
			var label = copyBtn.querySelector('span');
			if (label) label.textContent = text;
			else copyBtn.textContent = text;
		}

		function renderInviteList(items, total) {
			if (!listEl) return;
			listEl.classList.remove('is-loading');
			if (totalEl) {
				if (total > items.length) totalEl.textContent = '最近 ' + items.length + ' 条 / 共 ' + total + ' 条';
				else totalEl.textContent = total ? '共 ' + total + ' 条' : '暂无记录';
			}
			if (!items.length) {
				listEl.innerHTML = '<div class="aksrt-invite-record-empty">分享链接后，好友注册记录会显示在这里。</div>';
				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 first = name ? name.charAt(0).toUpperCase() : '?';
				var meta = statusMeta(item.status);
				var createdAt = formatDate(item.created_at);
				var rewardedAt = formatDate(item.rewarded_at);
				var statusText = meta.text;
				if (item.status === 'rewarded' && rewardedAt) statusText = '奖励于 ' + rewardedAt;
				var avatar = item.invitee_avatar
					? '<img src="' + escapeHtml(item.invitee_avatar) + '" alt="">'
					: '<span>' + escapeHtml(first) + '</span>';

				return '<div class="aksrt-invite-record ' + meta.className + '">' +
					'<div class="aksrt-invite-record__avatar">' + avatar + '</div>' +
					'<div class="aksrt-invite-record__main">' +
						'<strong>' + escapeHtml(name) + '</strong>' +
						'<span>' + (createdAt ? '注册于 ' + escapeHtml(createdAt) : '注册时间未知') + '</span>' +
					'</div>' +
					'<div class="aksrt-invite-record__status">' +
						'<span class="aksrt-invite-badge ' + meta.className + '">' + meta.label + '</span>' +
						'<small>' + escapeHtml(statusText) + '</small>' +
					'</div>' +
				'</div>';
			}).join('');
		}

		api('/invite/me').then(function (r) {
			if (!r.ok) {
				if (linkInput) linkInput.value = '';
				if (copyBtn) copyBtn.disabled = true;
				if (codeEl) codeEl.textContent = '--';
				if (stats) {
					stats.querySelectorAll('[data-stat]').forEach(function (el) {
						el.textContent = '—';
					});
				}
				return;
			}
			var j = r.json;
			if (linkInput) linkInput.value = j.invite_url || '';
			if (codeEl) codeEl.textContent = j.code || '--';
			if (stats && j.stats) {
				stats.querySelectorAll('[data-stat]').forEach(function (el) {
					var k = el.getAttribute('data-stat');
					el.textContent = (j.stats[k] || 0).toString();
				});
			}
		}).catch(function () {
			if (copyBtn) copyBtn.disabled = true;
			if (codeEl) codeEl.textContent = '--';
		});

		if (listEl) {
			api('/invite/list?per_page=8').then(function (r) {
				if (!r.ok) {
					listEl.classList.remove('is-loading');
					listEl.innerHTML = '<div class="aksrt-invite-record-empty">邀请记录加载失败，请稍后刷新。</div>';
					if (totalEl) totalEl.textContent = '加载失败';
					return;
				}
				var j = r.json || {};
				renderInviteList(j.items || [], Number(j.total || 0));
			}).catch(function () {
				listEl.classList.remove('is-loading');
				listEl.innerHTML = '<div class="aksrt-invite-record-empty">邀请记录加载失败，请稍后刷新。</div>';
				if (totalEl) totalEl.textContent = '加载失败';
			});
		}

		if (!copyBtn) return;
		var copying = false;
		copyBtn.addEventListener('click', function () {
			if (copying || !linkInput || !linkInput.value) return;
			copying = true;
			if (navigator.clipboard) {
				navigator.clipboard.writeText(linkInput.value).then(function () {
					setCopyText('已复制');
					setTimeout(function () { setCopyText('复制链接'); copying = false; }, 2000);
				}).catch(function () { copying = false; });
			} else {
				linkInput.select();
				document.execCommand('copy');
				setCopyText('已复制');
				setTimeout(function () { setCopyText('复制链接'); copying = false; }, 2000);
			}
		});
	}

	if (document.readyState === 'loading') {
		document.addEventListener('DOMContentLoaded', function () {
			initSignin();
			initInvite();
		});
	} else {
		initSignin();
		initInvite();
	}
})();