/**
 * Jio affiliate revenue center + referral poster (split from credits.js).
 * Exposes window.JioAffiliateRevenueInit for the user-center router.
 *
 * @package Jio
 */
(function () {
	"use strict";

	function api(path, options) {
		return window.JioRequest.request(path, options || {}).then(function (response) {
			return { ok: response.ok, status: response.status, json: response.json || {}, data: response.data };
		}).catch(function (error) {
			var response = error && error.response ? error.response : {};
			return { ok: false, status: (error && error.status) || response.status || 0, json: (error && error.json) || response.json || {} };
		});
	}

	// ===== Forward-only affiliate revenue center =====
	/* 推广链接由 PHP 直出，首屏即可见、可复制；这里只补异步才拿得到的
	 * 海报配置与佣金比例，取失败也不影响复制。 */
	function initAffiliateRevenue() {
		var root = document.querySelector('[data-jio-revenue-page]');
		if (!root || root.dataset.affiliateBound) return;
		root.dataset.affiliateBound = '1';
		var input = root.querySelector('[data-affiliate-link]');
		var copy = root.querySelector('[data-affiliate-copy]');
		var url = input ? input.value : '';
		if (copy) copy.disabled = !url;
		api('/revenue/me').then(function (r) {
			if (!r.ok) return;
			var j = r.json || {};
			var ratio = root.querySelector('[data-affiliate-ratio]'); if (ratio) ratio.textContent = String(j.current_ratio || 0) + '%';
			initAffiliatePoster(root, url || j.url || '', j.poster || {}, j.site_name || document.title, j.referrer_name || '');
		}).catch(function () { /* 海报与比例为增强项，静默失败即可。 */ });
		if (copy) copy.addEventListener('click', function () {
			if (!input || !input.value) return;
			var done = function () { notyf('推广链接已复制', 'success', 3, 'jio-affiliate-copy-toast'); };
			var fail = function () { input.focus(); input.select(); notyf('复制失败，请手动复制', 'danger', 3, 'jio-affiliate-copy-toast'); };
			if (navigator.clipboard && navigator.clipboard.writeText) navigator.clipboard.writeText(input.value).then(done).catch(fail);
			else { input.focus(); input.select(); try { document.execCommand('copy'); done(); } catch (e) { fail(); } }
		});
	}

	// ===== Referral poster =====
	/* 布局 1:1 复刻参考主题 poster-share.js 的 rebate 分支（非 product）：
	 * 768×1168，顶部主图占上半屏、左上角日期、标题竖线 + 标题、红色推荐人标签层、
	 * 简介，底部带边框盒内左侧 contain 居中 logo 图 + 右下二维码，最底部居中文案。
	 * 顶部主图按参考主题的三级回退加载（banner → banner_default → banner_spare）。 */
	function initAffiliatePoster(root, url, poster, siteName, referrerName) {
		var button = root.querySelector('[data-affiliate-poster]');
		var modal = document.querySelector('[data-jio-affiliate-poster-modal]');
		var stage = modal ? modal.querySelector('[data-affiliate-poster-stage]') : null;
		var loading = modal ? modal.querySelector('[data-affiliate-poster-loading]') : null;
		var content = modal ? modal.querySelector('.modal-content') : null;
		var download = modal ? modal.querySelector('[data-affiliate-poster-download]') : null;
		if (!button || !modal) return;
		if (!url || !poster || poster.enabled !== true) return;
		button.hidden = false;

		var backdrop = null;
		var canvas = null;

		function openPosterModal() {
			if (modal.classList.contains('in')) return;
			modal.style.display = 'flex';
			void modal.offsetWidth; // 强制 reflow，让 .fade 过渡从 scale(0.9) 起手
			modal.classList.add('in');
			modal.setAttribute('aria-hidden', 'false');
			if (!backdrop) {
				backdrop = document.createElement('div');
				backdrop.className = 'modal-backdrop fade in';
				backdrop.setAttribute('data-affiliate-poster-backdrop', '1');
				document.body.appendChild(backdrop);
			}
			document.body.classList.add('modal-open');
		}

		function closePosterModal() {
			if (!modal.classList.contains('in')) return;
			modal.classList.remove('in');
			modal.setAttribute('aria-hidden', 'true');
			document.body.classList.remove('modal-open');
			if (backdrop && backdrop.parentNode) backdrop.parentNode.removeChild(backdrop);
			backdrop = null;
			// 等过渡结束再撤 display，复刻 Bootstrap 的 fade-out 收尾
			window.setTimeout(function () {
				if (!modal.classList.contains('in')) modal.style.display = '';
			}, 300);
		}

		modal.addEventListener('click', function (event) {
			// 点遮罩层（.modal 自身）或关闭按钮（data-dismiss="modal"）
			if (event.target === modal || (event.target.closest && event.target.closest('[data-dismiss="modal"]'))) {
				closePosterModal();
			}
		});
		document.addEventListener('keydown', function (event) {
			if (event.key === 'Escape' && modal.classList.contains('in')) closePosterModal();
		});

		if (download) {
			download.addEventListener('click', function () {
				if (!canvas) return;
				try {
					var link = document.createElement('a');
					link.download = 'referral-poster.png';
					link.href = canvas.toDataURL('image/png');
					document.body.appendChild(link);
					link.click();
					link.remove();
				} catch (err) {
					/* Canvas is same-origin generated; download can only fail if the browser blocks it. */
				}
			});
		}

		button.addEventListener('click', function () {
			if (typeof window.qrcode !== 'function') {
				if (stage) { stage.innerHTML = '<p class="muted-2-color em09">' + '二维码组件未加载。' + '</p>'; }
				openPosterModal();
				return;
			}
			if (stage) { stage.innerHTML = ''; stage.classList.remove('loaded'); }
			if (loading) loading.style.display = '';
			if (download) download.classList.add('hide');
			openPosterModal();
			button.disabled = true;
			buildPosterCanvas(url, poster, siteName, referrerName).then(function (built) {
				canvas = built;
				if (!stage) return;
				// 参考主题：img.loaded-img 直接进 .poster-imgbox，遮罩淡出，
				// 内容块高度从 220px 过渡到海报实际高度后清掉内联样式。
				var img = document.createElement('img');
				img.src = canvas.toDataURL('image/png');
				img.alt = '推广海报';
				img.className = 'loaded-img';
				// 参考主题按 0.7 比例预设尺寸；.poster-imgbox > img 的 max-width:360px
				// 会在窄屏把它压回弹窗宽度，height:100% 让 offsetHeight 反映真实渲染高度。
				img.width = 768 * 0.7;
				img.height = 1168 * 0.7;
				stage.appendChild(img);
				stage.classList.add('loaded');
				if (download) {
					download.href = img.src;
					download.classList.remove('hide');
				}
				if (loading) loading.style.display = 'none';
				if (content) {
					content.style.height = stage.offsetHeight + 'px';
					content.style.transition = '.2s';
					window.setTimeout(function () {
						content.style.height = '';
						content.style.overflow = '';
						content.style.transition = '';
					}, 200);
				}
			}).catch(function () {
				if (stage) { stage.innerHTML = '<p class="muted-2-color em09">' + '海报生成失败，请重试。' + '</p>'; }
			}).finally(function () {
				button.disabled = false;
			});
		});
	}

	// 三级回退加载图片：任一源成功即返回，全部失败才 reject（参考主题 loadCount 0→1→2）。
	function loadPosterImage(sources) {
		var list = (sources || []).filter(function (src) { return !!src; });
		return new Promise(function (resolve, reject) {
			var index = 0;
			function next() {
				if (index >= list.length) { reject(new Error('poster image unavailable')); return; }
				var image = new Image();
				image.crossOrigin = 'anonymous';
				image.onload = function () { resolve(image); };
				image.onerror = function () { index += 1; next(); };
				image.src = list[index];
			}
			next();
		});
	}

	// contain 裁切：参考主题 containImg()，等比缩放塞进盒子并居中，不裁切。
	function containRect(sx, sy, boxW, boxH, srcW, srcH) {
		var dx = sx, dy = sy, dWidth = boxW, dHeight = boxH;
		if (srcW > srcH || (srcW === srcH && boxW < boxH)) {
			dHeight = (srcH * dWidth) / srcW;
			dy = sy + (boxH - dHeight) / 2;
		} else if (srcW < srcH || (srcW === srcH && boxW > boxH)) {
			dWidth = (srcW * dHeight) / srcH;
			dx = sx + (boxW - dWidth) / 2;
		}
		return { x: dx, y: dy, width: dWidth, height: dHeight };
	}

	// 参考主题 drawTextOverflow()：按 maxWidth-120 换行、x 偏移 38，最多 maxRow 行，溢出补 ...。
	// 返回实际测量宽度，供价格/标签层做横向排版。
	function drawTextOverflow(ctx, text, maxWidth, maxRow, font, color, lineHeight, x, y) {
		var rows = [];
		var temp = '';
		var limit = maxWidth - 120;
		x = x + 38;
		text = String(text || '').replace(/[\r\n]/g, '');
		ctx.fillStyle = color;
		ctx.font = font;
		var chars = text.split('');
		var measured = 0;
		if (ctx.measureText(text).width <= limit) {
			rows.push(text);
		} else {
			for (var i = 0; i < chars.length; i++) {
				if (rows.length === maxRow && i < chars.length - 1) {
					rows[rows.length - 1] += '...';
					break;
				}
				if (ctx.measureText(temp).width < limit) {
					temp += chars[i];
					if (i === chars.length - 1) rows.push(temp);
				} else {
					i--; // 参考主题：回退一格防止字符丢失
					rows.push(temp);
					temp = '';
				}
			}
		}
		for (var r = 0; r < rows.length; r++) {
			measured = Math.max(measured, ctx.measureText(rows[r]).width);
			ctx.fillText(rows[r], x, y + r * lineHeight, limit);
		}
		return { width: measured, height: rows.length * lineHeight };
	}

	// 参考主题 buildPosterCanvas rebate 分支：768×1168，顶部主图占上半屏，左上角日期，
	// 标题竖蓝线 + 标题，推荐人标签（红），简介，底部盒（logo + 二维码 + 底部文案）。
	function buildPosterCanvas(url, poster, siteName, referrerName) {
		var width = 768, height = 1168;
		var canvas = document.createElement('canvas');
		canvas.width = width;
		canvas.height = height;
		var ctx = canvas.getContext('2d');
		var imgHeight = height / 2; // rebate 分支：顶部主图占上半屏
		// 站点名走「周」前缀。
		var weekLabel = '周' + '日一二三四五六'.charAt(new Date().getDay());
		// 推荐人标签：参考主题 tags = `推荐人: {昵称}`，缺昵称时整层不画。
		var tags = referrerName ? '推荐人: ' + String(referrerName) : '';
		// 底部文案：优先推广海报配置，回退到分享设置 share_desc，再回退默认文案。
		var bottom = String(poster.bottom || '扫描二维码阅读全文');
		var title = String(poster.title || siteName || '');
		var description = String(poster.description || '');

		return Promise.all([
			loadPosterImage([poster.image, poster.banner_default, poster.banner_spare]),
			poster.logo ? loadPosterImage([poster.logo]).catch(function () { return null; }) : Promise.resolve(null)
		]).then(function (assets) {
			var banner = assets[0], logo = assets[1];
			ctx.fillStyle = '#ffffff';
			ctx.fillRect(0, 0, width, height);
			// 顶部主图（cover 裁切）。
			var rect = coverRect(width, imgHeight, banner.width, banner.height);
			ctx.drawImage(banner, rect.sx, rect.sy, rect.sWidth, rect.sHeight, 0, 0, width, imgHeight);
			// 左上角日期（白字，覆盖在主图上）。
			ctx.textBaseline = 'top';
			ctx.textAlign = 'left';
			ctx.fillStyle = 'rgba(255,255,255,1)';
			ctx.font = '35px Arial';
			ctx.fillText(weekLabel, 30, 37);
			ctx.font = '28px Arial';
			ctx.fillText((new Date().getMonth() + 1) + ' / ' + new Date().getDate(), 30, 87);
			// 标题竖蓝线。
			ctx.strokeStyle = '#00a1ff';
			ctx.lineWidth = 7;
			ctx.beginPath();
			ctx.lineCap = 'round';
			ctx.moveTo(40, imgHeight + 38);
			ctx.lineTo(40, imgHeight + 74);
			ctx.stroke();
			// 标题层（粗体）。参考 rebate 分支把 $title 子画布置于 (20, img_height+40)，
			// 子画布内左对齐 x=40、文字基线偏移 2，故绝对坐标 (40, img_height+42)；
			// drawTextOverflow 内部会 +38，所以这里传 2。
			drawTextOverflow(ctx, title, width, 2, 'bold 35px Arial', '#424242', 52, 2, imgHeight + 42);
			// 推荐人标签层（红，最多 1 行）：$tags 置于 (0, img_height+160)。
			if (tags) {
				drawTextOverflow(ctx, tags, width, 1, '24px Arial', '#fc4e1f', 36, 2, imgHeight + 162);
			}
			// 简介层（灰）：$content 置于 (0, img_height+220)。
			if (description) {
				drawTextOverflow(ctx, description, width, 4, '25px Arial', 'rgba(88,88,88,1)', 39, 2, imgHeight + 222);
			}
			// 底部带边框盒。
			ctx.strokeStyle = 'rgba(122,122,122,0.2)';
			ctx.lineWidth = 2;
			ctx.beginPath();
			ctx.rect(30, height - 230, width - 60, 200);
			ctx.stroke();
			// logo 图：contain 居中，缺图时整块不画（参考主题 logo.naturalWidth 守卫）。
			if (logo && logo.width && logo.height) {
				var logoRect = containRect(80, height - 190, 300, 100, logo.width, logo.height);
				ctx.drawImage(logo, logoRect.x, logoRect.y, logoRect.width, logoRect.height);
			}
			// 二维码（右下角）。
			var qr = window.qrcode(0, 'M');
			qr.addData(url);
			qr.make();
			var count = qr.getModuleCount();
			var qrBox = 120;
			var cell = qrBox / count;
			var qrX = width - 200, qrY = height - 200;
			ctx.fillStyle = '#0f172a';
			for (var r = 0; r < count; r++) {
				for (var c = 0; c < count; c++) {
					if (qr.isDark(r, c)) {
						ctx.fillRect(qrX + Math.floor(c * cell), qrY + Math.floor(r * cell), Math.ceil(cell), Math.ceil(cell));
					}
				}
			}
			// 底部文案（居中，盒下方）。
			ctx.textAlign = 'center';
			ctx.fillStyle = '#b4b4b4';
			ctx.font = '22px Arial';
			ctx.fillText(String(bottom).slice(0, 46), width / 2, height - 58);
			ctx.textAlign = 'left';
			return canvas;
		});
	}

	// cover 裁切：把源图按短边铺满目标框并居中裁切。
	function coverRect(boxW, boxH, srcW, srcH) {
		var sx = 0, sy = 0, sWidth = srcW, sHeight = srcH;
		if (srcW / srcH > boxW / boxH) {
			sWidth = (boxW * srcH) / boxH;
			sx = (srcW - sWidth) / 2;
		} else {
			sHeight = (boxH * srcW) / boxW;
			sy = (srcH - sHeight) / 2;
		}
		return { sx: sx, sy: sy, sWidth: sWidth, sHeight: sHeight };
	}

	window.JioAffiliateRevenueInit = initAffiliateRevenue;

	jQuery(document).off("auto_fun.jio-credits-affiliate").on("auto_fun.jio-credits-affiliate", initAffiliateRevenue);
})();