import type {
  UserInput,
  FortuneResult,
  FortuneProfile,
  CompanyRecommendation,
  JobRecommendation,
  StageAdvice,
} from './types';

function calculateWuxing(birthDate: string): { wuxing: FortuneProfile['wuxing']; wuxingLabel: string } {
  const date = new Date(birthDate);
  const year = date.getFullYear();

  const tiangan = year % 10;
  const tianganMap: Record<number, string> = {
    0: 'metal',
    1: 'metal',
    2: 'water',
    3: 'water',
    4: 'wood',
    5: 'wood',
    6: 'fire',
    7: 'fire',
    8: 'earth',
    9: 'earth',
  };

  const wuxingKey = tianganMap[tiangan] || 'earth';
  const labelMap: Record<string, string> = {
    wood: '木',
    fire: '火',
    earth: '土',
    metal: '金',
    water: '水',
  };

  return {
    wuxing: wuxingKey as FortuneProfile['wuxing'],
    wuxingLabel: labelMap[wuxingKey] || '土',
  };
}

function generateProfile(wuxing: FortuneProfile['wuxing'], wuxingLabel: string): FortuneProfile {
  const profiles: Record<string, Partial<FortuneProfile>> = {
    wood: {
      personality: ['有生发之力', '善于规划与成长', '追求目标坚定'],
      strengths: ['领导力', '规划能力', '适应力'],
      weaknesses: ['有时过于刚硬', '易忽略细节'],
      developmentRhythm: 'growth',
    },
    fire: {
      personality: ['热情洋溢', '执行力强', '喜欢表达'],
      strengths: ['创造力', '感染力', '行动力'],
      weaknesses: ['易急躁', '缺乏耐心'],
      developmentRhythm: 'breakthrough',
    },
    earth: {
      personality: ['稳重务实', '注重规则', '善于协调'],
      strengths: ['稳定性', '执行力', '资源整合'],
      weaknesses: ['过于保守', '创新不足'],
      developmentRhythm: 'stable',
    },
    metal: {
      personality: ['刚毅果断', '追求效率', '原则性强'],
      strengths: ['决断力', '专业度', '抗压能力'],
      weaknesses: ['过于严厉', '不够灵活'],
      developmentRhythm: 'accumulation',
    },
    water: {
      personality: ['灵活变通', '善于沟通', '适应力强'],
      strengths: ['沟通力', '学习力', '洞察力'],
      weaknesses: ['易动摇', '缺乏坚持'],
      developmentRhythm: 'growth',
    },
  };

  const profile = profiles[wuxing] || profiles.earth;

  return {
    wuxing,
    wuxingLabel,
    personality: profile.personality || [],
    strengths: profile.strengths || [],
    weaknesses: profile.weaknesses || [],
    developmentRhythm: profile.developmentRhythm || 'stable',
  };
}

function generateCompanyRecommendations(profile: FortuneProfile): CompanyRecommendation[] {
  const { developmentRhythm } = profile;

  const companyTypes: CompanyRecommendation[] = [
    {
      type: '一线大厂',
      matchScore: 85,
      reasons: ['资源丰富，平台稳定', '制度完善，适合长期发展', '能发挥你的专业能力'],
      suitableFor: ['追求稳定发展', '希望积累大平台经验'],
      notSuitableFor: ['渴望快速晋升', '喜欢灵活工作方式'],
      stageAdvice: developmentRhythm === 'stable' ? '适合进入积累期' : '可考虑内部晋升机会',
    },
    {
      type: '独角兽公司',
      matchScore: 78,
      reasons: ['成长空间大', '能接触核心业务', '晋升机会多'],
      suitableFor: ['渴望快速成长', '愿意承担风险'],
      notSuitableFor: ['追求极度稳定', '不喜欢不确定性'],
      stageAdvice: developmentRhythm === 'growth' ? '非常适合当前阶段' : '需评估团队稳定性',
    },
    {
      type: '高增长创业公司',
      matchScore: 72,
      reasons: ['决策灵活', '成长速度快', '能全面锻炼能力'],
      suitableFor: ['敢于冒险', '希望快速晋升'],
      notSuitableFor: ['喜欢按部就班', '需要明确指引'],
      stageAdvice: '适合寻求突破的年轻人',
    },
    {
      type: '强技术驱动型公司',
      matchScore: 80,
      reasons: ['重视技术能力', '氛围开放', '创新机会多'],
      suitableFor: ['技术导向', '喜欢钻研'],
      notSuitableFor: ['销售导向', '不喜欢深度工作'],
      stageAdvice: '技术路线发展的理想选择',
    },
    {
      type: '强产品驱动型公司',
      matchScore: 76,
      reasons: ['用户体验为核心', '重视创新', '成长空间大'],
      suitableFor: ['产品思维', '用户导向'],
      notSuitableFor: ['纯执行导向', '不喜欢思考'],
      stageAdvice: '产品路线发展的好平台',
    },
    {
      type: '稳定流程型组织',
      matchScore: 68,
      reasons: ['工作稳定', '流程规范', '压力适中'],
      suitableFor: ['追求工作生活平衡', '喜欢清晰职责'],
      notSuitableFor: ['渴望快速变化', '喜欢创新'],
      stageAdvice: developmentRhythm === 'stable' ? '适合当前阶段' : '可能限制发展',
    },
  ];

  return companyTypes.sort((a, b) => b.matchScore - a.matchScore).slice(0, 4);
}

function generateJobRecommendations(profile: FortuneProfile): JobRecommendation[] {
  const jobTypes: JobRecommendation[] = [
    {
      category: '技术研发',
      matchScore: 88,
      reasons: ['你的特质适合深耕技术', '需要专业能力和持续学习'],
      suitableWorkStyle: ['独立钻研', '解决复杂问题'],
      notSuitableFor: ['频繁社交', '简单重复工作'],
    },
    {
      category: '产品经理',
      matchScore: 82,
      reasons: ['需要平衡多方需求', '注重规划和沟通'],
      suitableWorkStyle: ['协调资源', '用户洞察'],
      notSuitableFor: ['纯技术执行', '不喜欢沟通'],
    },
    {
      category: '运营',
      matchScore: 79,
      reasons: ['需要数据分析能力', '注重用户增长'],
      suitableWorkStyle: ['数据分析', '活动策划'],
      notSuitableFor: ['极度内向', '不喜欢变化'],
    },
    {
      category: '销售商务',
      matchScore: 75,
      reasons: ['需要人际沟通能力', '结果导向'],
      suitableWorkStyle: ['人际交往', '资源整合'],
      notSuitableFor: ['不喜欢竞争', '害怕被拒绝'],
    },
    {
      category: '设计',
      matchScore: 77,
      reasons: ['需要审美和创造力', '注重用户体验'],
      suitableWorkStyle: ['视觉表达', '创意工作'],
      notSuitableFor: ['不喜欢抽象思维', '追求确定答案'],
    },
    {
      category: '管理岗',
      matchScore: 73,
      reasons: ['需要领导力和规划能力', '注重团队发展'],
      suitableWorkStyle: ['团队管理', '战略规划'],
      notSuitableFor: ['喜欢独立工作', '不喜欢处理人事'],
    },
  ];

  if (profile.wuxing === 'wood') {
    jobTypes.find((j) => j.category === '管理岗')!.matchScore += 5;
    jobTypes.find((j) => j.category === '产品经理')!.matchScore += 3;
  } else if (profile.wuxing === 'fire') {
    jobTypes.find((j) => j.category === '销售商务')!.matchScore += 5;
    jobTypes.find((j) => j.category === '运营')!.matchScore += 3;
  } else if (profile.wuxing === 'water') {
    jobTypes.find((j) => j.category === '运营')!.matchScore += 5;
    jobTypes.find((j) => j.category === '产品经理')!.matchScore += 3;
  } else if (profile.wuxing === 'metal') {
    jobTypes.find((j) => j.category === '技术研发')!.matchScore += 5;
    jobTypes.find((j) => j.category === '管理岗')!.matchScore += 3;
  } else if (profile.wuxing === 'earth') {
    jobTypes.find((j) => j.category === '运营')!.matchScore += 3;
    jobTypes.find((j) => j.category === '管理岗')!.matchScore += 5;
  }

  return jobTypes.sort((a, b) => b.matchScore - a.matchScore).slice(0, 4);
}

function generateStageAdvice(profile: FortuneProfile): StageAdvice {
  const { developmentRhythm, wuxingLabel } = profile;

  const adviceMap: Record<string, StageAdvice> = {
    stable: {
      overall: `你目前处于稳定积累期，五行属${wuxingLabel}，适合稳扎稳打。`,
      careerDirection: '建议在现有岗位上深耕，积累专业能力。',
      jobChangeTiming: '当前不建议频繁变动，保持稳定是更好的选择。',
      platformPreference: '优先选择成熟稳定的大平台。',
      keyObservations: ['关注岗位的成长空间而非只看薪资', '建立专业壁垒是关键', '可以开始培养管理能力'],
    },
    growth: {
      overall: `你目前处于成长期，五行属${wuxingLabel}，有较强的上升动力。`,
      careerDirection: '适合寻求晋升机会或承担更大责任。',
      jobChangeTiming: '可以开始关注外部机会，但不要急于变动。',
      platformPreference: '独角兽或高速成长公司可能更适合你。',
      keyObservations: ['主动争取项目机会', '扩大影响力范围', '开始建立个人品牌'],
    },
    breakthrough: {
      overall: `你目前处于突破期，五行属${wuxingLabel}，适合做出重大改变。`,
      careerDirection: '可以考虑转型或创业的机会。',
      jobChangeTiming: '现在是尝试新方向的好时机。',
      platformPreference: '创业公司或新业务部门可能更适合你。',
      keyObservations: ['勇敢尝试新领域', '不要害怕失败', '整合资源是关键'],
    },
    accumulation: {
      overall: `你目前处于沉淀期，五行属${wuxingLabel}，需要耐心积累。`,
      careerDirection: '适合深耕现有领域，等待时机。',
      jobChangeTiming: '建议先完成当前阶段的积累。',
      platformPreference: '稳定平台更适合当前状态。',
      keyObservations: ['专注提升专业深度', '建立行业人脉', '等待合适的机会'],
    },
  };

  return adviceMap[developmentRhythm] || adviceMap.stable;
}

export function analyzeFortune(input: UserInput): FortuneResult {
  const { wuxing, wuxingLabel } = calculateWuxing(input.birthDate);
  const profile = generateProfile(wuxing, wuxingLabel);
  const companyRecommendations = generateCompanyRecommendations(profile);
  const jobRecommendations = generateJobRecommendations(profile);
  const stageAdvice = generateStageAdvice(profile);

  return {
    profile,
    companyRecommendations,
    jobRecommendations,
    stageAdvice,
  };
}