import { getNovelSearch } from '../../api/api'
import { goToBookDetail } from '../../utils/util'

Page({
  data: {
    keyword: '',
    bookList: [],
    loading: false,
    hasMore: true,
    page: 1,
    size: 10
  },

  onLoad: function(options) {
    // 获取传入的关键词
    const keyword = options.keyword || '';
    this.setData({ keyword });
    
    // 如果有关键词，立即搜索
    if (keyword) {
      this.search();
    }
  },

  // 输入框内容变化
  handleInput: function(e) {
    this.setData({
      keyword: e.detail.value
    });
  },

  // 清空搜索内容
  clearSearch: function() {
    this.setData({
      keyword: '',
      bookList: []
    });
  },

  // 开始搜索
  search: function() {
    // 如果关键词为空，不执行搜索
    if (!this.data.keyword.trim()) {
      return;
    }

    // 重置搜索状态
    this.setData({
      page: 1,
      bookList: [],
      hasMore: true
    });

    // 执行搜索
    this.loadSearchResult();
  },

  // 加载搜索结果
  async loadSearchResult() {
    if (this.data.loading || !this.data.hasMore) return;

    this.setData({ loading: true });
    
    try {
      const params = {
        keyword: this.data.keyword,
        page: this.data.page,
        size: this.data.size
      };

      const result = await getNovelSearch(params);
      
      if (result && result.records) {
        // 处理搜索结果，标记匹配关键字的部分
        const processedList = this.processBookList(result.records);
        
        const newList = this.data.page === 1 ? processedList : [...this.data.bookList, ...processedList];
        const hasMore = !result.last;
        
        this.setData({
          bookList: newList,
          loading: false,
          hasMore: hasMore,
          page: hasMore ? this.data.page + 1 : this.data.page
        });
      } else {
        this.setData({
          loading: false,
          hasMore: false
        });
      }
    } catch (error) {
      console.error('搜索失败:', error);
      this.setData({ 
        loading: false,
        hasMore: false
      });
      wx.showToast({
        title: '搜索失败，请重试',
        icon: 'none'
      });
    }
  },

  // 处理搜索结果，标记匹配关键字的部分
  processBookList(books) {
    if (!this.data.keyword || !books || !books.length) return books;
    
    const keyword = this.data.keyword.trim();
    
    return books.map(book => {
      if (book.title && keyword) {
        // 添加标记，表示这本书的标题包含关键字
        book.titleContainsKeyword = book.title.toLowerCase().includes(keyword.toLowerCase());
        
        // 添加处理后的标题，用于在WXML中展示
        // 由于小程序不支持直接用rich-text高亮，我们标记出匹配部分在后续WXML中用view嵌套处理
        const titleLower = book.title.toLowerCase();
        const keywordLower = keyword.toLowerCase();
        
        if (book.titleContainsKeyword) {
          const index = titleLower.indexOf(keywordLower);
          if (index !== -1) {
            book.titleBeforeKeyword = book.title.substring(0, index);
            book.titleKeyword = book.title.substring(index, index + keyword.length);
            book.titleAfterKeyword = book.title.substring(index + keyword.length);
          }
        }
      }
      return book;
    });
  },

  // 监听滚动到底部
  onScrollToLower: function() {
    if (this.data.hasMore) {
      this.loadSearchResult();
    }
  },

  // 跳转到书籍详情
  handleBookTap: function(e) {
    const { id, wxbookid } = e.currentTarget.dataset;
    goToBookDetail({
      bookId: id,
      wxBookId: wxbookid
    });
  },

  // 返回上一页
  goBack: function() {
    wx.navigateBack({
      delta: 1
    });
  }
})