// stores/book.ts
import { defineStore } from 'pinia'
import type { IBookDetail, IBook, IReaderSettings, IReadProgress } from '@/types/book'

interface BookState {
  currentBook: IBookDetail | null
  myBooks: IBook[]
  readerSettings: IReaderSettings
  readProgressCache: Record<number, IReadProgress>
}

export const useBookStore = defineStore('book', {
  state: (): BookState => ({
    // 当前查看的书籍
    currentBook: null,
    
    // 书单列表
    myBooks: [],
    
    // 阅读器设置
    readerSettings: {
      fontSize: 1,
      lineHeight: 34,
      theme: 'default',
      readMode: 'scroll'
    },
    
    // 阅读进度缓存
    readProgressCache: {}
  }),
  
  getters: {
    /**
     * 获取指定书籍的阅读进度
     */
    getReadProgress: (state) => (bookId: number) => {
      return state.readProgressCache[bookId]
    }
  },
  
  actions: {
    /**
     * 设置当前书籍
     */
    setCurrentBook(book: IBookDetail) {
      this.currentBook = book
    },
    
    /**
     * 更新阅读设置
     */
    updateReaderSettings(settings: Partial<IReaderSettings>) {
      Object.assign(this.readerSettings, settings)
      // 持久化到本地存储
      uni.setStorageSync('readerSettings', this.readerSettings)
    },
    
    /**
     * 缓存阅读进度
     */
    cacheReadProgress(bookId: number, progress: IReadProgress) {
      this.readProgressCache[bookId] = progress
    },
    
    /**
     * 从本地存储恢复设置
     */
    restoreSettings() {
      try {
        const settings = uni.getStorageSync('readerSettings')
        if (settings) {
          this.readerSettings = settings
        }
      } catch (e) {
        console.error('Failed to restore reader settings:', e)
      }
    },
    
    /**
     * 重置store
     */
    reset() {
      this.currentBook = null
      this.myBooks = []
      this.readProgressCache = {}
    }
  }
})