import html2pdf from 'html2pdf.js'
import type { ResumeTemplateData } from '@/components/JobResumeTemplate.vue'
import {
  fetchResumeMain, fetchResumeEducation, fetchResumeWork,
  fetchResumeInternship, fetchResumeProject, fetchResumeCompetition,
} from '@/api/resume'

/**
 * 将简历DOM导出为PDF文件
 * @param element 简历DOM元素
 * @param fileName 文件名（不含扩展名）
 */
export async function exportResumePdf(element: HTMLElement, fileName: string) {
  const options = {
    margin: [10, 10, 10, 10] as [number, number, number, number],
    filename: `${fileName}.pdf`,
    image: { type: 'jpeg' as const, quality: 0.98 },
    html2canvas: { scale: 2, useCORS: true, logging: false },
    jsPDF: { unit: 'mm', format: 'a4', orientation: 'portrait' as const },
    pagebreak: { mode: ['css', 'legacy'] },
  }
  await html2pdf().set(options).from(element).save()
}

/**
 * 将简历DOM导出为Word文件
 * @param element 简历DOM元素
 * @param fileName 文件名（不含扩展名）
 */
export function exportResumeWord(element: HTMLElement, fileName: string) {
  // Word专用内联样式（不使用页面全局样式，避免 rem/100px 基准干扰）
  // 字体在第一版基础上放大50%，边距通过Word XML指令设置
  const wordCss = `
    @page WordSection1 {
      size: 595.3pt 841.9pt;
      mso-page-orientation: portrait;
      mso-header-margin: 0pt;
      mso-footer-margin: 0pt;
      mso-paper-source: 0;
      margin-top: 72pt;
      margin-right: 54pt;
      margin-bottom: 72pt;
      margin-left: 54pt;
    }
    div.WordSection1 { page: WordSection1; }
    body { font-family: 'SimSun', 'Songti SC', serif; color: #000; line-height: 1.6; margin: 0; padding: 0; }
    .job-resume-template { width: 100%; background: #fff; box-sizing: border-box; }
    .resume-html { padding: 0; font-family: 'SimSun', 'Songti SC', serif; color: #000; line-height: 1.6; }
    .resume-html__name { font-size: 24pt; font-weight: 700; margin: 0 0 4.8pt 0; line-height: 1.3; }
    .resume-html__contact { font-size: 12pt; color: #000; margin-bottom: 3.6pt; line-height: 1.5; }
    .resume-html__contact-row { display: flex; align-items: center; gap: 0; }
    .resume-html__separator { margin: 0 4.8pt; color: #777; }
    .resume-html__section-title { font-size: 17.3pt; font-weight: 700; color: #000; margin-top: 20pt; margin-bottom: 10pt; line-height: 1.3; }
    .resume-html__divider { height: 1.5px; background: #000; margin-bottom: 9.6pt; }
    .resume-html__summary { font-size: 12pt; line-height: 1.7; margin-bottom: 4.8pt; }
    .resume-html__item { margin-bottom: 9.6pt; }
    .resume-html__item-header { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 2pt; }
    .resume-html__item-main { font-size: 13.2pt; font-weight: 600; color: #000; line-height: 1.4; }
    .resume-html__item-right { display: flex; align-items: center; gap: 4.8pt; flex-shrink: 0; text-align: right; }
    .resume-html__item-location { font-size: 12pt; color: #000; }
    .resume-html__item-date { font-size: 12pt; color: #000; white-space: nowrap; }
    .resume-html__item-desc { font-size: 12pt; color: #000; line-height: 1.7; margin-top: 2pt; }
    .resume-html__desc-list { margin: 0; padding-left: 0; list-style: none; mso-list: none; }
    .resume-html__desc-list li { font-size: 12pt; line-height: 1.7; color: #000; list-style: none; mso-list: none; margin-left: 0; padding-left: 24pt; text-indent: 0; }
    .resume-html__skills { font-size: 12pt; line-height: 1.7; }
    .resume-html__skill-row { margin-bottom: 2.4pt; }
    .resume-html__skill-label { font-weight: 600; }
    .resume-html__diff-highlight { background-color: #D4EDDA; color: #155724; border-radius: 2px; padding: 0 1px; }
  `

  // 组装Word可识别的HTML文档
  // Word页面边距通过XML指令设置（单位twips，1pt=20twips，1英寸=1440twips）
  // 上下边距 2cm ≈ 1134twips，左右边距 2.5cm ≈ 1418twips
  const parts: string[] = []
  parts.push('<html xmlns:o="urn:schemas-microsoft-com:office:office"')
  parts.push('      xmlns:w="urn:schemas-microsoft-com:office:word"')
  parts.push('      xmlns="http://www.w3.org/TR/REC-html40">')
  parts.push('<head>')
  parts.push('<meta charset="utf-8">')
  parts.push('<meta name="ProgId" content="Word.Document">')
  parts.push('<meta name="Generator" content="Microsoft Word 15">')
  parts.push('<!--[if gte mso 9]><xml>')
  parts.push('<w:WordDocument>')
  parts.push('<w:View>Print</w:View>')
  parts.push('<w:Zoom>100</w:Zoom>')
  parts.push('</w:WordDocument>')
  parts.push('</xml><![endif]-->')
  parts.push('<style>' + wordCss + '</style>')
  parts.push('</head>')
  parts.push('<body>')
  parts.push('<!--[if gte mso 9]><xml>')
  parts.push('<w:WordDocument>')
  parts.push('<w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel>')
  parts.push('</w:WordDocument>')
  parts.push('</xml><![endif]-->')
  parts.push('<div class="WordSection1">' + element.outerHTML + '</div>')
  parts.push('</body>')
  parts.push('</html>')
  const fullHtml = parts.join('\n')

  // 生成Blob并触发下载
  const blob = new Blob([fullHtml], { type: 'application/msword' })
  const link = document.createElement('a')
  link.href = URL.createObjectURL(blob)
  link.download = `${fileName}.doc`
  document.body.appendChild(link)
  link.click()
  document.body.removeChild(link)
  URL.revokeObjectURL(link.href)
}

/** 学历文字转数字 */
function degreeToNumber(degree?: string): number {
  const map: Record<string, number> = { '大专': 1, '本科': 2, '硕士': 3, '博士': 4 }
  return map[degree || ''] || 2
}

/** 描述段落映射辅助函数 */
function mapDesc(list?: { id?: string; text?: string }[]) {
  return (list || []).map(d => ({ id: d.id, text: d.text || '' }))
}

/**
 * 加载简历完整数据并组装为模板格式
 * @param resumeId 简历ID
 */
export async function loadResumeTemplateData(resumeId: string): Promise<ResumeTemplateData | null> {
  const [mainRes, eduRes, workRes, internRes, projRes, compRes] = await Promise.all([
    fetchResumeMain(resumeId),
    fetchResumeEducation(resumeId),
    fetchResumeWork(resumeId),
    fetchResumeInternship(resumeId),
    fetchResumeProject(resumeId),
    fetchResumeCompetition(resumeId),
  ])

  if (mainRes.code !== '0' || !mainRes.data) return null

  const r = mainRes.data
  return {
    name: r.name || '未填写姓名',
    email: r.email || '',
    mobileNumber: r.mobileNumber || '',
    wechatNumber: r.wechatNumber || '',
    summary: r.summary || '',
    educations: (eduRes.data || []).map(e => ({
      school: e.school || '',
      major: e.major || '',
      degree: degreeToNumber(e.degree),
      startDate: e.startDate || '',
      endDate: e.endDate || '',
      description: mapDesc(e.description),
    })),
    workExperiences: (workRes.data || []).map(w => ({
      companyName: w.companyName || '',
      position: w.position || '',
      startDate: w.startDate || '',
      endDate: w.endDate || '',
      description: mapDesc(w.description),
    })),
    internships: (internRes.data || []).map(i => ({
      companyName: i.companyName || '',
      position: i.position || '',
      startDate: i.startDate || '',
      endDate: i.endDate || '',
      description: mapDesc(i.description),
    })),
    projects: (projRes.data || []).map(p => ({
      projectName: p.projectName || '',
      companyName: p.companyName || '',
      role: p.role || '',
      startDate: p.startDate || '',
      endDate: p.endDate || '',
      description: mapDesc(p.description),
    })),
    competitions: (compRes.data || []).map(c => ({
      competitionName: c.competitionName || '',
      award: c.award || '',
      awardDate: c.awardDate || '',
      description: mapDesc(c.description),
    })),
    skills: r.skills || [],
    certificates: r.certificates || [],
  }
}
