/**
 * @description 缓存工具类
 */
export default class CacheUtils {
  // /**
  //  * @description 打开websql
  //  */
  // static openWebSql (db) {
  //   try {
  //     window.GLOB.WebSql = openDatabase(db, '1', 'mk-pc-database', 50 * 1024 * 1024)
  //     window.GLOB.WebSql.transaction(tx => {
  //       tx.executeSql('CREATE TABLE IF NOT EXISTS VERSIONS (version varchar(50), createDate varchar(50), CDefine1 varchar(50), CDefine2 varchar(50), CDefine3 varchar(50))', [], () => {
        
  //       }, () => {
  //         // eslint-disable-next-line
  //         throw 'CREATE TABLE ERROR'
  //       })
  //       tx.executeSql('CREATE TABLE IF NOT EXISTS CONFIGS (menuid varchar(50), userid varchar(50), openEdition varchar(50), webEdition varchar(50), LongParam text, LongParamUser text, CDefine1 varchar(50), CDefine2 varchar(50), CDefine3 varchar(50), CDefine4 varchar(50), CDefine5 varchar(50))', [], () => {

  //       }, () => {
  //         // eslint-disable-next-line
  //         throw 'CREATE TABLE ERROR'
  //       })

  //       tx.executeSql('CREATE TABLE IF NOT EXISTS CACHES (menuid varchar(50), CreateDate varchar(50), LongParam text, CDefine1 varchar(50), CDefine2 varchar(50))', [], () => {

  //       }, () => {
  //         // eslint-disable-next-line
  //         throw 'CREATE TABLE ERROR'
  //       })

  //       if (window.GLOB.systemType === '') {
  //         tx.executeSql('CREATE TABLE IF NOT EXISTS FUNCS (func_code varchar(50), key_sql text, CDefine1 varchar(50), CDefine2 varchar(50), CDefine3 varchar(50))', [], () => {

  //         }, () => {
  //           // eslint-disable-next-line
  //           throw 'CREATE TABLE ERROR'
  //         })
  //       }
  //     })
  //     // window.GLOB.WebSql.transaction(tx => {
  //     //   tx.executeSql('DROP TABLE VERSIONS')
  //     //   tx.executeSql('DROP TABLE CONFIGS')
  //     // })
  //   } catch (e) {
  //     console.warn('WebSql 初始化失败！')
  //     window.GLOB.WebSql = null

  //     if (window.indexedDB) {
  //       this.openIndexDB(db)
  //     }
  //   }
  // }

  // /**
  //  * @description 清空函数
  //  */
  // static clearFuncs () {
  //   if (window.GLOB.systemType !== '') return

  //   if (window.GLOB.WebSql) {
  //     window.GLOB.WebSql.transaction(tx => {
  //       tx.executeSql('DELETE FROM FUNCS')

  //       tx.executeSql(`UPDATE VERSIONS SET createDate='1970-01-01 14:59:09.000' where CDefine1='funcs'`)
  //     })
  //   } else if (window.GLOB.IndexDB) {
  //     let objectStore = window.GLOB.IndexDB.transaction(['funcs'], 'readwrite').objectStore('funcs')
  //     objectStore.clear()

  //     window.GLOB.IndexDB.transaction(['version'], 'readwrite').objectStore('version').delete('funcs')
  //   }
  // }

  // /**
  //  * @description 获取websql中保存信息版本
  //  */
  // static getWebSqlVersion () {
  //   if (!window.GLOB.WebSql) {
  //     return Promise.reject()
  //   }

  //   let deffers = []

  //   deffers.push(
  //     new Promise((resolve) => {
  //       window.GLOB.WebSql.transaction(tx => {
  //         tx.executeSql("SELECT * FROM VERSIONS where CDefine1='LongParam'", [], (tx, results) => {
  //           if (results.rows[0]) {
  //             resolve(results.rows[0])
  //           } else {
  //             resolve({version: '', createDate: ''})
  //           }
  //         }, (tx, results) => {
  //           console.warn(results)
  //           resolve({version: '', createDate: ''})
  //         })
  //       })
  //     })
  //   )

  //   deffers.push(
  //     new Promise((resolve) => {
  //       window.GLOB.WebSql.transaction(tx => {
  //         tx.executeSql(`SELECT * FROM CONFIGS`, [], (tx, results) => {
  //           let menus = []
  //           for (let i = 0; i < results.rows.length; i++) {
  //             menus.push(`'${results.rows[i].menuid}','${results.rows[i].openEdition || 'mk'}'`)
  //           }
  //           resolve(menus)
  //         }, (tx, results) => {
  //           console.warn(results)
  //           resolve([])
  //         })
  //       })
  //     })
  //   )

  //   return new Promise((resolve) => {
  //     Promise.all(deffers).then(res => {
  //       let result = res[0]

  //       if (result.createDate && !/^\d{4}-\d{2}-\d{2}/.test(result.createDate)) {
  //         result.createDate = ''
  //       }

  //       result.menuids = res[1].join(';')

  //       resolve(result)
  //     })
  //   })
  // }

  // /**
  //  * @description 删除websql中保存的配置信息
  //  */
  // static delWebSqlConfig (keys) {
  //   if (!window.GLOB.WebSql) return

  //   if (!keys) {
  //     window.GLOB.WebSql.transaction(tx => {
  //       tx.executeSql(`DELETE FROM CONFIGS`, [], () => {}, (tx, results) => {
  //         console.warn(results)
  //       })
  //     })
  //   } else {
  //     window.GLOB.WebSql.transaction(tx => {
  //       tx.executeSql(`DELETE FROM CONFIGS where menuid in (${keys})`, [], () => {}, (tx, results) => {
  //         console.warn(results)
  //       })
  //     })
  //   }
  // }

  // /**
  //  * @description 删除websql中保存的配置信息
  //  */
  // static delMenuWebSqlConfig (menuId) {
  //   if (!window.GLOB.WebSql || !menuId) return Promise.resolve()
  //   return new Promise(resolve => {
  //     window.GLOB.WebSql.transaction(tx => {
  //       tx.executeSql(`DELETE FROM CONFIGS where menuid='${menuId}'`, [], () => {
  //         resolve()
  //       }, (tx, results) => {
  //         console.warn(results)
  //         resolve()
  //       })
  //     })
  //   })
  // }

  // /**
  //  * @description 更新websql中配置信息的版本
  //  */
  // static updateWebSqlversion (version, curTime) {
  //   if (!window.GLOB.WebSql) return

  //   window.GLOB.WebSql.transaction(tx => {
  //     tx.executeSql(`DELETE FROM VERSIONS where CDefine1='LongParam'`)

  //     if (version) {
  //       tx.executeSql('INSERT INTO VERSIONS (version, createDate, CDefine1) VALUES (?, ?, ?)', [version, curTime, 'LongParam'], () => {}, (tx, results) => {
  //         console.warn(results)
  //       })
  //     }
  //   })
  // }

  // /**
  //  * @description 获取websql中的配置信息
  //  */
  // static getWebSqlMenuConfig (MenuID, userid) {
  //   if (!window.GLOB.WebSql || !MenuID || !userid) return Promise.reject()
  //   return new Promise((resolve, reject) => {
  //     window.GLOB.WebSql.transaction(tx => {
  //       tx.executeSql(`SELECT * FROM CONFIGS WHERE menuid='${MenuID}' and userid='${userid}'`, [], (tx, results) => {
  //         let paramItem = results.rows[0]
  //         if (paramItem) {
  //           resolve({
  //             ErrCode: 'S',
  //             ErrMesg: '',
  //             LongParam: paramItem.LongParam,
  //             LongParamUser: paramItem.LongParamUser,
  //             message: '',
  //             open_edition: paramItem.openEdition,
  //             status: true,
  //             web_edition: paramItem.webEdition
  //           })
  //         } else {
  //           reject()
  //         }
  //       }, (tx, results) => {
  //         console.warn(results)
  //         reject()
  //       })
  //     })
  //   })
  // }

  // /**
  //  * @description 将数据写入websql
  //  */
  // static writeInWebSql (data) {
  //   if (!window.GLOB.WebSql || !data) return
  //   window.GLOB.WebSql.transaction(tx => {
  //     tx.executeSql('INSERT INTO CONFIGS (menuid, userid, openEdition, webEdition, LongParam, LongParamUser) VALUES (?, ?, ?, ?, ?, ?)', data)
  //   })
  // }

  // /**
  //  * @description 将缓存数据写入websql
  //  */
  // static writeCacheInWebSql (data) {
  //   if (!window.GLOB.WebSql) return
  //   window.GLOB.WebSql.transaction(tx => {
  //     tx.executeSql(`DELETE FROM CACHES where menuid='${data[0]}'`)
  //     if (data[2]) {
  //       tx.executeSql('INSERT INTO CACHES (menuid, CreateDate, LongParam) VALUES (?, ?, ?)', data)
  //     }
  //   })
  // }

  // /**
  //  * @description 获取websql中的配置信息
  //  */
  // static getWebSqlCacheConfig (MenuID) {
  //   if (!window.GLOB.WebSql) return Promise.resolve()
  //   return new Promise((resolve, reject) => {
  //     window.GLOB.WebSql.transaction(tx => {
  //       tx.executeSql(`SELECT * FROM CACHES WHERE menuid='${MenuID}'`, [], (tx, results) => {
  //         resolve(results.rows[0])
  //       }, (tx, results) => {
  //         console.warn(results)
  //         resolve()
  //       })
  //     })
  //   })
  // }

  // /**
  //  * @description 删除websql中超过7天的缓存信息
  //  */
  // static delWebSqlCacheConfig (date, type) {
  //   if (!window.GLOB.WebSql) return
  //   window.GLOB.WebSql.transaction(tx => {
  //     if (type === 'all') {
  //       tx.executeSql('DELETE FROM CACHES')
  //     } else {
  //       tx.executeSql(`DELETE FROM CACHES where CreateDate<'${date}'`)
  //     }
  //   })
  // }

  /**
   * @description 打开IndexedDB
   */
  static openIndexDB (db) {
    try {
      let request = window.indexedDB.open(db, 2)
      request.onerror = () => {
        console.warn('IndexedDB 初始化失败！')
      }
      request.onsuccess = () => {
        window.GLOB.IndexDB = request.result
      }
      request.onupgradeneeded = (event) => {
        window.GLOB.IndexDB = event.target.result
        if (!window.GLOB.IndexDB.objectStoreNames.contains('version')) {
          window.GLOB.IndexDB.createObjectStore('version', { keyPath: 'id' })
        }
        if (!window.GLOB.IndexDB.objectStoreNames.contains('configs')) {
          let objectStore = window.GLOB.IndexDB.createObjectStore('configs', { keyPath: 'id' })
          objectStore.createIndex('menuid', 'menuid', { unique: false })
          objectStore.createIndex('userid', 'userid', { unique: false })
        }
        if (!window.GLOB.IndexDB.objectStoreNames.contains('caches')) {
          window.GLOB.IndexDB.createObjectStore('caches', { keyPath: 'menuid' })
        }
        if (window.GLOB.systemType === '' && !window.GLOB.IndexDB.objectStoreNames.contains('funcs')) {
          window.GLOB.IndexDB.createObjectStore('funcs', { keyPath: 'id' })
        }
      }
    } catch (e) {
      console.warn('IndexedDB 初始化失败！')
      window.GLOB.IndexDB = null
    }
  }

  /**
   * @description 获取IndexedDB中保存信息版本
   */
  static getIndexDBVersion () {
    if (!window.GLOB.IndexDB) {
      return Promise.reject()
    }

    let deffers = []

    deffers.push(
      new Promise((resolve) => {
        let request = window.GLOB.IndexDB.transaction(['version'])
          .objectStore('version')
          .get('mksoft')

        request.onerror = (event) => {
          window.GLOB.IndexDB = null
          console.warn(event)
          resolve({version: '', createDate: ''})
        }

        request.onsuccess = () => {
          if (request.result) {
            resolve(request.result)
          } else {
            resolve({version: '', createDate: ''})
          }
        }
      })
    )

    deffers.push(
      new Promise((resolve) => {
        let request = window.GLOB.IndexDB.transaction(['configs']).objectStore('configs').openCursor()
        let menus = []

        request.onerror = () => {
          window.GLOB.IndexDB = null
          resolve(menus)
        }

        request.onsuccess = (e) => {
          let cursor = e.target.result
          if (cursor) {
            menus.push(`'${cursor.value.menuid}','${cursor.value.open_edition || 'mk'}'`)
            cursor.continue()
          } else {
            resolve(menus)
          }
        }
      })
    )

    return new Promise((resolve) => {
      Promise.all(deffers).then(res => {
        let result = res[0]

        if (result.createDate && !/^\d{4}-\d{2}-\d{2}/.test(result.createDate)) {
          result.createDate = ''
        }

        result.menuids = res[1].join(';')

        resolve(result)
      })
    })
  }

  /**
   * @description 更新IndexedDB中配置信息的版本
   */
  static updateIndexDBversion (version) {
    if (!window.GLOB.IndexDB || !version) return

    if (!version) {
      let request = window.GLOB.IndexDB.transaction(['configs'], 'readwrite').objectStore('configs').delete('mksoft')
  
      request.onerror = () => {
        window.GLOB.IndexDB = null
      }
    } else {
      version.id = 'mksoft'

      let objectStore = window.GLOB.IndexDB.transaction(['version'], 'readwrite').objectStore('version')
      let request = objectStore.get('mksoft')
  
      request.onerror = () => {
        window.GLOB.IndexDB = null
      }
  
      request.onsuccess = () => {
        if (request.result) {
          let put = objectStore.put(version)
  
          put.onerror = () => {
            window.GLOB.IndexDB = null
          }
        } else {
          let add = objectStore.add(version)
  
          add.onerror = () => {
            window.GLOB.IndexDB = null
          }
        }
      }
    }
  }

  /**
   * @description 删除IndexedDB中保存的配置信息
   */
  static delMenuIndexDBConfig (key) {
    if (!window.GLOB.IndexDB || !key) return Promise.resolve()

    return new Promise(resolve => {
      let request = window.GLOB.IndexDB.transaction(['configs'], 'readwrite')
        .objectStore('configs')
        .delete(key)

      request.onsuccess = () => {
        resolve()
      }
      request.onerror = () => {
        window.GLOB.IndexDB = null
        resolve()
      }
    })
  }

  /**
   * @description 删除IndexedDB中保存的配置信息-批量
   */
  static delIndexDBConfig (menuids) {
    if (!window.GLOB.IndexDB) return

    if (!menuids) {
      let request = window.GLOB.IndexDB.transaction(['configs'], 'readwrite').objectStore('configs').clear()
  
      request.onerror = () => {
        window.GLOB.IndexDB = null
      }
    } else {
      let request = window.GLOB.IndexDB.transaction(['configs'], 'readwrite').objectStore('configs').openCursor()
  
      request.onerror = () => {
        window.GLOB.IndexDB = null
      }

      request.onsuccess = (e) => {
        let cursor = e.target.result
        if (cursor) {
          if (menuids.includes(cursor.value.menuid)) {
            cursor.delete()
          }
          cursor.continue()
        }
      }
    }
  }

  /**
   * @description 获取IndexedDB中的配置信息
   */
  static getIndexDBMenuConfig (MenuID, userid) {
    if (!window.GLOB.IndexDB || !MenuID || !userid) return Promise.reject()
    let key = MenuID + userid
    
    return new Promise((resolve, reject) => {
      let request = window.GLOB.IndexDB.transaction(['configs']).objectStore('configs').get(key)

      request.onerror = () => {
        window.GLOB.IndexDB = null
        reject()
      }

      request.onsuccess = () => {
        if (request.result) {
          resolve(request.result)
        } else {
          reject()
        }
      }
    })
  }

  /**
   * @description 将数据写入IndexedDB
   */
  static writeInIndexDB (data) {
    if (!window.GLOB.IndexDB || !data) return

    window.GLOB.IndexDB.transaction(['configs'], 'readwrite').objectStore('configs').add(data)
  }

  /**
   * @description 将数据写入IndexedDB
   */
  static writeCacheInIndexDB (data) {
    if (!window.GLOB.IndexDB) return

    let objectStore = window.GLOB.IndexDB.transaction(['caches'], 'readwrite').objectStore('caches')
    objectStore.delete(data.menuid)

    if (data.LongParam) {
      objectStore.add(data)
    }
  }

  /**
   * @description 获取IndexedDB中的配置信息
   */
  static getIndexDBCacheConfig (MenuID) {
    if (!window.GLOB.IndexDB) return Promise.resolve()
    
    return new Promise((resolve, reject) => {
      let request = window.GLOB.IndexDB.transaction(['caches']).objectStore('caches').get(MenuID)

      request.onerror = () => {
        resolve()
      }

      request.onsuccess = () => {
        resolve(request.result)
      }
    })
  }

  /**
   * @description 删除IndexedDB中超过7天的缓存信息
   */
  static delIndexDBCacheConfig (date, type) {
    if (!window.GLOB.IndexDB) return

    if (type === 'all') {
      window.GLOB.IndexDB.transaction(['caches'], 'readwrite').objectStore('caches').clear()
    } else {
      let request = window.GLOB.IndexDB.transaction(['caches'], 'readwrite').objectStore('caches').openCursor()
  
      request.onsuccess = (e) => {
        let cursor = e.target.result
        if (cursor) {
          if (cursor.value.CreateDate < date) {
            cursor.delete()
          }
          cursor.continue()
        }
      }
    }
  }
}