const { ipcMain } = require('electron')
const { app } = require('electron')
const path = require('path')
const fs = require('fs')
// const config = app.getPath('userData');

const Config = require('electron-config')
const config = new Config()

let DBPath = config.get('database.path')
if (!DBPath) {
  DBPathDir = app.getPath('userData')
  DBPath = path.join(DBPathDir, '/timechain.db')
  config.set('database.path', DBPath)
}

const { TimeChainDataSqliteRecord, ConnectToDatabase, TimeChainDataSqliteFile, TimeChainDataSqliteTag, TimeChainDataSqliteTagLink } = require('./sqlite')

console.log(DBPath)

const DB = ConnectToDatabase(DBPath)

const DbRecord = new TimeChainDataSqliteRecord()
const DbFile = new TimeChainDataSqliteFile()
const DbTag = new TimeChainDataSqliteTag()
const DbTagLink = new TimeChainDataSqliteTagLink()

// ** Extra IPC Functions

ipcMain.handle('select-sqlite-file', (event, arg) => {
  const { dialog } = require('electron')
  const files = dialog.showOpenDialog({
    filters: [{
      name: 'Sqlite File',
      extensions: ['db', 'db3']
    }]
  })

  if (!files) return false
  return files
})

ipcMain.handle('create-sqlite-file', (event, arg) => {
  const { dialog } = require('electron')
  const files = dialog.showSaveDialogSync({
    filters: [{
      name: 'Sqlite File',
      extensions: ['db', 'db3']
    }]
  })

  if (!files) return false
  return files
})

/**
 * Allows the UI to select another database file
 */
ipcMain.handle('timechain-database-open', (event, arg) => {
  if (!arg.filename) return false
  if (!fs.existsSync(arg.filename)) return false
  config.set('database.path', arg.filename)
  app.relaunch()
  app.quit()
  // DB = ConnectToDatabase(arg.filename)
  return true
})

/**
 * Allows the UI to create a new database instance
 */
ipcMain.handle('timechain-database-create', (event, arg) => {
  if (!arg.filename) return false
  console.log('database.path', arg.filename)
  config.set('database.path', arg.filename)
  app.relaunch()
  app.quit()
  // DB = ConnectToDatabase(arg.filename)
  return true
})

// ** RECORD **
console.log('Register timechain-record')
ipcMain.handle('timechain-record', async (event, arg) => {
  let res = null

  switch (arg.func) {
    case 'add':
      res = await DbRecord.add(arg.uuid, arg.timestamp, arg.content, arg.mime, arg.hash)
      break
    case 'delete':
      res = await DbRecord.delete(arg.uuid)
      break
    case 'update':
      res = await DbRecord.update(arg.uuid, arg.content, arg.mime, arg.hash)
      break
    case 'find':
      res = await DbRecord.find(arg.search, arg.sort, arg.limit, arg.offset)
      break
    case 'get':
      res = await DbRecord.get(arg.uuid)
      break
    default:
      res = new Error('unknown command')
  }

  return res
})

// ** FILE **

ipcMain.handle('timechain-file', async (event, arg) => {
  let res = null

  switch (arg.func) {
    case 'add':
      res = await DbFile.add(arg.uuid_record, arg.uuid, arg.timestamp, arg.content, arg.mime, arg.hash)
      break
    case 'update':
      res = await DbFile.update(arg.uuid, arg.timestamp, arg.content, arg.mime, arg.hash)
      break
    case 'get-record':
      res = await DbFile.getByRecord(arg.uuid_record)
      break
    case 'delete-record':
      res = await DbFile.deleteRecord(arg.uuid_record)
      break
    case 'get':
      res = await DbFile.get(arg.uuid)
      break
    case 'delete':
      res = await DbFile.delete(arg.uuid)
      break
    default:
      res = new Error('Unknow a command')
  }

  return res
})

// ** TAG **

ipcMain.handle('timechain-tag', async (event, arg) => {
  let res = null

  switch (arg.func) {
    case 'add':
      res = await DbTag.add(arg.tag)
      break
    case 'delete':
      res = await DbTag.delete(arg.tag)
      break
    case 'has':
      res = await DbTag.delete(arg.tag)
      break
    case 'all':
      res = await DbTag.all()
      break;
    case 'like':
      res = await DbTag.like(arg.str)
      break;  
    default:
      res = new Error('Command Unknown')
  }

  return res
})

// TAG LINK

ipcMain.handle('timechain-taglink', async (event, arg) => {
  let res = null

  switch (arg.func) {
    case 'add':
      res = await DbTagLink.add(arg.uuid, arg.tag)
      break
    case 'delete':
      res = await DbTagLink.delete(arg.uuid, arg.tag)
      break
    case 'delete-tag':
      res = await DbTagLink.deleteTag(arg.tag)
      break
    case 'delete-record':
      res = await DbTagLink.deleteRecord(arg.uuid)
      break
    case 'get-records':
      res = await DbTagLink.getRecords(atg.tag)
      break
    case 'get-tags':
      res = await DbTagLink.getTags(atg.uuid)
      break
    default:
      res = Error('Commande not known')
  }

  return res
})