/**
 * ═══════════════════════════════════════════════════
 * 海报模板 · 1080×1920 (9:16)
 * ═══════════════════════════════════════════════════
 *
 * 适用于：放假通知、收稿海报、活动公告等
 */

import { STYLES } from '../config.js'

const W = STYLES.sizes.poster.width
const H = STYLES.sizes.poster.height


/**
 * 生成海报 HTML
 * @param {object} data
 * @param {string} data.title         - 大标题
 * @param {string} data.subtitle      - 副标题（可选）
 * @param {string} data.body          - 正文内容
 * @param {string[]} data.details     - 详情列表（如时间/地点/要求）
 * @param {string} data.cta           - 行动号召（如「欢迎投稿」）
 * @param {string} data.footer        - 底部信息（如主办方/联系方式）
 * @param {string} data.tag           - 角标标签（如「通知」）
 * @param {'default'|'notice'|'recruit'} data.style - 海报风格
 */
export function posterCard(data) {
  const {
    title = '',
    subtitle = '',
    body = '',
    details = [],
    cta = '',
    footer = '',
    tag = '',
    style = 'default',
  } = data

  const C = STYLES.colors
  const F = STYLES.fonts
  const T = STYLES.typography

  // 详情列表渲染
  const detailsHtml = details.map((d, i) => {
    // 支持 key: value 格式
    const colonIdx = d.indexOf('：')
    if (colonIdx > 0 && colonIdx < 20) {
      const key = d.slice(0, colonIdx)
      const val = d.slice(colonIdx + 1)
      return `
        <div class="detail-item">
          <span class="detail-key">${key}</span>
          <span class="detail-colon">：</span>
          <span class="detail-val">${val}</span>
        </div>`
    }
    return `<div class="detail-item">${d}</div>`
  }).join('\n')

  return `<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<style>
  * { margin: 0; padding: 0; box-sizing: border-box; }

  @import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;600;700;900&family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

  body {
    width: ${W}px;
    height: ${H}px;
    overflow: hidden;
    background: ${C.bg};
    font-family: ${F.body};
    display: flex;
    flex-direction: column;
    position: relative;
  }

  /* ── 背景装饰 ── */
  .bg-accent {
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, ${C.accent}08 0%, transparent 70%);
  }
  .bg-accent-bl {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, ${C.highlight}06 0%, transparent 70%);
  }

  .container {
    flex: 1;
    padding: 72px 64px 48px;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 1;
  }

  /* ── 标签 ── */
  .tag {
    display: inline-block;
    padding: 6px 18px;
    border: 1px solid ${C.accent};
    color: ${C.accent};
    font-size: ${T.captionSize}px;
    border-radius: 4px;
    margin-bottom: 32px;
    align-self: flex-start;
    letter-spacing: 3px;
  }

  /* ── 标题区 ── */
  .title-section {
    margin-bottom: 40px;
  }

  .title {
    font-family: ${F.title};
    font-size: 64px;
    font-weight: 900;
    line-height: 1.25;
    color: ${C.primary};
    letter-spacing: 4px;
  }

  .title-accent {
    color: ${C.highlight};
  }

  .subtitle {
    font-family: ${F.title};
    font-size: ${T.subtitleSize}px;
    font-weight: 300;
    color: ${C.textMuted};
    margin-top: 12px;
    letter-spacing: 6px;
  }

  /* ── 分割线 ── */
  .divider {
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, ${C.gold}, ${C.highlight});
    margin-bottom: 32px;
  }

  /* ── 正文 ── */
  .body {
    font-size: ${T.bodySize}px;
    line-height: ${T.lineHeight};
    color: ${C.text};
    margin-bottom: 32px;
  }

  .body p {
    margin-bottom: 12px;
  }

  /* ── 详情列表 ── */
  .details {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 32px;
    padding: 32px;
    background: ${C.warm}30;
    border-radius: 8px;
    border-left: 4px solid ${C.accent};
  }

  .detail-item {
    font-size: ${T.bodySize}px;
    line-height: 1.5;
    color: ${C.text};
  }

  .detail-key {
    font-weight: 600;
    color: ${C.accent};
  }
  .detail-colon { color: ${C.textMuted}; }
  .detail-val { color: ${C.text}; }

  /* ── CTA ── */
  .cta-section {
    text-align: center;
    padding: 24px 0;
    margin-bottom: 16px;
  }

  .cta {
    display: inline-block;
    padding: 16px 48px;
    background: linear-gradient(135deg, ${C.accent}, ${C.primary});
    color: ${C.textLight};
    font-size: ${T.subtitleSize}px;
    font-weight: 600;
    border-radius: 8px;
    letter-spacing: 4px;
  }

  /* ── 底部 ── */
  .footer {
    text-align: center;
    padding-top: 16px;
    border-top: 1px solid ${C.divider};
    font-size: ${T.captionSize}px;
    color: ${C.textMuted};
    line-height: 1.6;
  }

  .brand-line {
    opacity: ${STYLES.brand.opacity};
    margin-top: 4px;
  }

  /* ── 通知风格：更正式 ── */
  .notice-title {
    font-family: ${F.title};
    font-size: 56px;
    font-weight: 700;
    text-align: center;
    letter-spacing: 8px;
    color: ${C.primary};
    margin-bottom: 16px;
  }

  .notice-sub {
    text-align: center;
    font-size: ${T.smallSize}px;
    color: ${C.textMuted};
    letter-spacing: 4px;
    margin-bottom: 32px;
  }

  /* ── 收稿风格：更有活力 ── */
  .recruit-badge {
    display: inline-block;
    padding: 8px 24px;
    background: ${C.highlight};
    color: white;
    font-size: ${T.smallSize}px;
    border-radius: 4px;
    letter-spacing: 2px;
    margin-bottom: 20px;
    align-self: center;
  }

  .recruit-title {
    font-family: ${F.title};
    font-size: 60px;
    font-weight: 900;
    text-align: center;
    line-height: 1.3;
    color: ${C.primary};
    letter-spacing: 3px;
    margin-bottom: 8px;
  }
</style>
</head>
<body>

<div class="bg-accent"></div>
<div class="bg-accent-bl"></div>

<div class="container">

  ${style === 'notice' ? `
    ${tag ? `<div class="tag" style="align-self:center;">${tag}</div>` : ''}
    <div class="notice-title">${title}</div>
    ${subtitle ? `<div class="notice-sub">${subtitle}</div>` : ''}
    <div class="divider" style="align-self:center;"></div>
  ` : style === 'recruit' ? `
    <div class="recruit-badge">${tag || '征稿启事'}</div>
    <div class="recruit-title">${title}</div>
    ${subtitle ? `<div style="text-align:center;font-size:${T.smallSize}px;color:${C.textMuted};letter-spacing:2px;margin-bottom:24px;">${subtitle}</div>` : ''}
  ` : `
    ${tag ? `<div class="tag">${tag}</div>` : ''}
    <div class="title-section">
      <div class="title">${title}</div>
      ${subtitle ? `<div class="subtitle">${subtitle}</div>` : ''}
    </div>
    <div class="divider"></div>
  `}

  ${body ? `<div class="body"><p>${body}</p></div>` : ''}

  ${details.length > 0 ? `<div class="details">${detailsHtml}</div>` : ''}

  <div style="flex:1;"></div>

  ${cta ? `
    <div class="cta-section">
      <div class="cta">${cta}</div>
    </div>
  ` : ''}

  <div class="footer">
    ${footer ? `<div>${footer}</div>` : ''}
    <div class="brand-line">${STYLES.brand.text}</div>
  </div>

</div>

</body>
</html>`
}
