const app = getApp();

Page({
  data: {
    searchKeyword: '',
    searchResults: [],
    center: null,
    reversedGenerations: [],
    siblings: [],
    peers: [],
    peerScrollLeft: 0,
    children: [],
    childrenScrollLeft: 0,
    loading: false,
    showDetail: false,
    detailMember: null
  },

  onLoad: function () {},

  onShow: function () {
    if (typeof this.getTabBar === 'function' && this.getTabBar()) {
      this.getTabBar().setData({ selected: 1 });
    }
  },

  onSearchInput: function (e) {
    this.setData({ searchKeyword: e.detail.value });
  },

  searchMember: function () {
    const kw = this.data.searchKeyword.trim();
    if (!kw) {
      wx.showToast({ title: '请输入姓名', icon: 'none' });
      return;
    }
    if (!app.globalData.isLoggedIn) {
      wx.showModal({
        title: '请先登录',
        showCancel: false,
        success: () => {
          wx.navigateTo({ url: '/pages/login/login' });
        }
      });
      return;
    }
    const searchUrl = `${app.globalData.baseUrl}/api/members/search`;
    console.log('[Search] URL:', searchUrl);
    console.log('[Search] keyword:', kw);
    console.log('[Search] isLoggedIn:', app.globalData.isLoggedIn);
    console.log('[Search] token:', app.globalData.token ? app.globalData.token.substring(0, 10) + '...' : 'null');

    wx.request({
      url: searchUrl,
      method: 'GET',
      data: { keyword: kw },
      header: { 'Authorization': `Bearer ${app.globalData.token}` },
      success: (res) => {
        console.log('[Search] statusCode:', res.statusCode);
        console.log('[Search] data:', JSON.stringify(res.data));
        if (res.data && res.data.success) {
          const list = res.data.data || [];
          if (list.length === 0) {
            wx.showToast({ title: '未找到相关成员', icon: 'none' });
          } else if (list.length === 1) {
            // 唯一结果，直接展示世系
            this.setData({
              searchResults: [],
              searchKeyword: list[0].name,
              loading: true,
              center: null,
              reversedGenerations: [],
              siblings: [],
              children: []
            });
            this.loadLineage(list[0].id);
          } else {
            this.setData({ searchResults: list });
          }
        } else {
          wx.showToast({ title: (res.data && res.data.message) || '搜索失败', icon: 'none' });
        }
      },
      fail: (err) => {
        console.error('[Search] 网络请求失败:', JSON.stringify(err));
        wx.showToast({ title: '网络失败:' + (err.errMsg || ''), icon: 'none', duration: 3000 });
      }
    });
  },

  selectMember: function (e) {
    const member = e.currentTarget.dataset.member;
    this.setData({
      searchResults: [],
      searchKeyword: member.name,
      loading: true,
      center: null,
      reversedGenerations: [],
      siblings: [],
      children: []
    });
    this.loadLineage(member.id);
  },

  loadLineage: function (memberId) {
    const lineageUrl = `${app.globalData.baseUrl}/api/lineage/${memberId}`;
    console.log('[Lineage] 请求URL:', lineageUrl);
    console.log('[Lineage] token:', app.globalData.token ? app.globalData.token.substring(0, 10) + '...' : 'null');
    wx.showLoading({ title: '加载中...' });
    wx.request({
      url: lineageUrl,
      method: 'GET',
      header: { 'Authorization': `Bearer ${app.globalData.token}` },
      success: (res) => {
        wx.hideLoading();
        console.log('[Lineage] statusCode:', res.statusCode);
        console.log('[Lineage] success:', res.data && res.data.success);
        console.log('[Lineage] data keys:', res.data && res.data.data ? Object.keys(res.data.data) : 'none');
        if (res.data && res.data.success) {
          const d = res.data.data;
          console.log('[Lineage] generations:', (d.generations || []).length);
          console.log('[Lineage] siblings:', (d.siblings || []).length);
          console.log('[Lineage] children:', (d.children || []).length);
          console.log('[Lineage] center:', JSON.stringify(d.center));
          const center = d.center || null;
          const siblings = d.siblings || [];

          // 计算 rpx→px 比率，用于 scroll-left
          const sysInfo = wx.getSystemInfoSync();
          const rpxRatio = sysInfo.windowWidth / 750;
          // 卡片宽200rpx + 间距16rpx = 216rpx/卡
          // padding两端各275rpx，当祖先在index=K时 scrollLeft=K*216*ratio
          const cardUnit = 216 * rpxRatio;

          // 每代：祖先 + 兄弟合并排序，计算 scrollLeft
          const rawGenerations = (d.generations || []).slice().reverse();
          const reversedGenerations = rawGenerations.map(gen => {
            const allPeers = [
              { ...gen.ancestor, isAncestor: true },
              ...(gen.siblings || []).map(s => ({ ...s, isAncestor: false }))
            ].sort((a, b) => {
              const oa = a.child_order || 1;
              const ob = b.child_order || 1;
              return oa !== ob ? oa - ob : a.id - b.id;
            });
            const ancIdx = allPeers.findIndex(p => p.isAncestor);
            return { ...gen, allPeers, scrollLeft: ancIdx * cardUnit };
          });

          // 查询人物行：center + 兄弟合并排序，计算 scrollLeft
          let peers = [];
          let peerScrollLeft = 0;
          if (center) {
            const allPeers = [
              { ...center, isCenter: true },
              ...siblings.map(s => ({ ...s, isCenter: false }))
            ].sort((a, b) => {
              const oa = a.child_order || 1;
              const ob = b.child_order || 1;
              return oa !== ob ? oa - ob : a.id - b.id;
            });
            peers = allPeers;
            const cIdx = allPeers.findIndex(p => p.isCenter);
            peerScrollLeft = cIdx * cardUnit;
          }

          // 子女行居中：将中间那个子女滚到屏幕中央
          const childrenArr = d.children || [];
          const midChildIdx = Math.floor(childrenArr.length / 2);
          const childrenScrollLeft = midChildIdx * cardUnit;

          this.setData({
            center,
            reversedGenerations,
            siblings,
            children: childrenArr,
            childrenScrollLeft,
            peers,
            peerScrollLeft,
            loading: false
          });
        } else {
          console.error('[Lineage] 失败:', JSON.stringify(res.data));
          wx.showToast({ title: (res.data && res.data.message) || '加载失败', icon: 'none' });
          this.setData({ loading: false });
        }
      },
      fail: (err) => {
        wx.hideLoading();
        console.error('[Lineage] 网络失败:', JSON.stringify(err));
        wx.showToast({ title: '世系加载失败:' + (err.errMsg || ''), icon: 'none', duration: 3000 });
        this.setData({ loading: false });
      }
    });
  },

  clearSearch: function () {
    this.setData({
      searchKeyword: '',
      searchResults: [],
      center: null,
      reversedGenerations: [],
      siblings: [],
      peers: [],
      peerScrollLeft: 0,
      children: [],
      childrenScrollLeft: 0,
      loading: false
    });
  },

  viewDetail: function (e) {
    const member = e.currentTarget.dataset.member;
    if (!member || !member.id) return;
    wx.request({
      url: `${app.globalData.baseUrl}/api/members/${member.id}`,
      method: 'GET',
      header: { 'Authorization': `Bearer ${app.globalData.token}` },
      success: (res) => {
        if (res.data && res.data.success) {
          this.setData({ showDetail: true, detailMember: res.data.data });
        }
      }
    });
  },

  switchCenter: function () {
    if (!this.data.detailMember) return;
    const m = this.data.detailMember;
    this.setData({
      showDetail: false,
      detailMember: null,
      searchKeyword: m.name,
      loading: true,
      center: null,
      reversedGenerations: [],
      siblings: [],
      children: []
    });
    this.loadLineage(m.id);
  },

  closeDetail: function () {
    this.setData({ showDetail: false, detailMember: null });
  },

  stopProp: function () {}
});