/* Simplified Relationship Data */
const relationships: Record<string, string> = {
    'default': '我',
    'f': '父亲',
    'm': '母亲',
    'h': '丈夫',
    'w': '妻子',
    's': '儿子',
    'd': '女儿',
    'ob': '哥哥',
    'yb': '弟弟',
    'os': '姐姐',
    'ys': '妹妹',

    'f,f': '爷爷',
    'f,m': '奶奶',
    'f,h': '爸爸', // redundancy
    'f,w': '妈妈', // redundancy
    'f,s': '兄弟', // Context dependent, usually brother or self
    'f,d': '姐妹', 
    'f,ob': '伯父',
    'f,yb': '叔叔',
    'f,os': '姑妈',
    'f,ys': '姑姑',

    'm,f': '姥爷',
    'm,m': '姥姥',
    'm,ob': '舅舅',
    'm,yb': '舅舅',
    'm,os': '姨妈',
    'm,ys': '姨妈',

    'f,f,f': '太爷爷',
    'f,f,m': '太奶奶',
    'f,m,f': '太姥爷',
    'f,m,m': '太姥姥',
    
    'h,f': '公公',
    'h,m': '婆婆',
    'w,f': '岳父',
    'w,m': '岳母',
    
    'ob,w': '嫂子',
    'yb,w': '弟妹',
    'os,h': '姐夫',
    'ys,h': '妹夫',
    
    'f,ob,w': '伯母',
    'f,yb,w': '婶婶',
    'f,os,h': '姑父',
    'f,ys,h': '姑父',

    'm,ob,w': '舅妈',
    'm,yb,w': '舅妈',
    'm,os,h': '姨父',
    'm,ys,h': '姨父'
};

/* Reverse lookup or more complex logic could be added here */

Page({
  data: {
    screenText: '我', // Display the chain: 父亲 的 母亲
    resultText: '', // Display the result: 奶奶
    currentChain: [] as string[], // Stores codes: ['f', 'm']
    gender: 1, // 1: Male, 0: Female (of the user)
    
    buttons: [
      { text: '父', id: 'f' },
      { text: '母', id: 'm' },
      { text: '夫', id: 'h' },
      { text: '妻', id: 'w' },
      { text: '儿', id: 's' },
      { text: '女', id: 'd' },
      { text: '兄', id: 'ob' },
      { text: '弟', id: 'yb' },
      { text: '姐', id: 'os' },
      { text: '妹', id: 'ys' }
    ]
  },

  onLoad() {
      
  },

  handleBtnClick(e: any) {
      const id = e.currentTarget.dataset.id;
      const text = e.currentTarget.dataset.text;
      
      const newChain = [...this.data.currentChain, id];
      const newScreenText = this.data.currentChain.length === 0 ? text : this.data.screenText + ' 的 ' + text;
      
      this.setData({
          currentChain: newChain,
          screenText: newScreenText
      });
      
      this.calculate(newChain);
  },
  
  handleBack() {
      if (this.data.currentChain.length === 0) return;
      
      const newChain = [...this.data.currentChain];
      newChain.pop();
      
      let newScreenText = '我';
      if (newChain.length > 0) {
          // Rebuild text
          newScreenText = newChain.map(code => {
              const btn = this.data.buttons.find(b => b.id === code);
              return btn ? btn.text : '';
          }).join(' 的 ');
      }
      
      this.setData({
          currentChain: newChain,
          screenText: newScreenText
      });
      
      if (newChain.length > 0) {
        this.calculate(newChain);
      } else {
          this.setData({ resultText: '' });
      }
  },
  
  handleClear() {
      this.setData({
          currentChain: [],
          screenText: '我',
          resultText: ''
      });
  },
  
  calculate(chain: string[]) {
      const key = chain.join(',');
      const result = relationships[key];
      
      if (result) {
          this.setData({ resultText: result });
      } else {
          this.setData({ resultText: '未知亲戚 / 关系太远' });
      }
  },
  
  switchGender() {
      this.setData({ gender: this.data.gender === 1 ? 0 : 1 });
      // Might affect initial 'Me' context if we expand logic
  }
});