import { ipcMain, shell, IpcMainEvent, dialog } from 'electron'
import Constants from './utils/Constants'
import { join, dirname } from 'path'
import {
  writeFileSync,
  readFileSync,
  existsSync,
  ensureDirSync
} from 'fs-extra'

/*
 * IPC Communications
 * */
export default class IPCs {
  static initialize(): void {
    // Get application version
    ipcMain.handle('msgRequestGetVersion', () => {
      return Constants.APP_VERSION
    })

    // Open url via web browser
    ipcMain.on(
      'msgOpenExternalLink',
      async (event: IpcMainEvent, url: string) => {
        await shell.openExternal(url)
      }
    )

    // Open file
    ipcMain.handle(
      'msgOpenFile',
      async (event: IpcMainEvent, filter: string) => {
        const filters = []
        if (filter === 'text') {
          filters.push({ name: 'Text', extensions: ['txt', 'json'] })
        } else if (filter === 'zip') {
          filters.push({ name: 'Zip', extensions: ['zip'] })
        }
        const dialogResult = await dialog.showOpenDialog({
          properties: ['openFile'],
          filters
        })
        return dialogResult
      }
    )

    // Select directory
    ipcMain.handle('msgSelectDirectory', async () => {
      const dialogResult = await dialog.showOpenDialog({
        properties: ['openDirectory']
      })

      if (!dialogResult.canceled && dialogResult.filePaths.length > 0) {
        return {
          canceled: false,
          filePath: dialogResult.filePaths[0]
        }
      }

      return { canceled: true }
    })

    // Load data from local file
    ipcMain.handle(
      'msgLoadData',
      async (event: IpcMainEvent, fileName: string) => {
        try {
          const userDataPath = join(Constants.APP_DATA_PATH, 'data')
          const filePath = join(userDataPath, fileName)

          // Ensure directory exists
          ensureDirSync(userDataPath)

          if (existsSync(filePath)) {
            const data = readFileSync(filePath, 'utf-8')
            return data
          }
          return null
        } catch (error) {
          console.error('Error loading data:', error)
          return null
        }
      }
    )

    // Save data to local file
    ipcMain.handle(
      'msgSaveData',
      async (event: IpcMainEvent, fileName: string, data: string) => {
        try {
          const userDataPath = join(Constants.APP_DATA_PATH, 'data')
          const filePath = join(userDataPath, fileName)

          // Ensure directory exists
          ensureDirSync(userDataPath)

          writeFileSync(filePath, data, 'utf-8')
          return true
        } catch (error) {
          console.error('Error saving data:', error)
          return false
        }
      }
    )

    // Execute template
    ipcMain.handle(
      'msgExecuteTemplate',
      async (
        event: IpcMainEvent,
        templateId: string,
        targetPath: string,
        baseDirNames: string[]
      ) => {
        try {
          // Load templates data
          const userDataPath = join(Constants.APP_DATA_PATH, 'data')
          const filePath = join(userDataPath, 'templates.json')

          let templates = []
          if (existsSync(filePath)) {
            const templatesData = readFileSync(filePath, 'utf-8')
            templates = JSON.parse(templatesData)
          }

          const template = templates.find((t) => t.id === templateId)

          if (!template) {
            return { success: false, error: 'Template not found' }
          }

          // Create directories and files for each base directory name
          for (const baseDirName of baseDirNames) {
            if (!baseDirName.trim()) continue

            // Create base directory
            const baseDirPath = join(targetPath, baseDirName)
            ensureDirSync(baseDirPath)

            // Create directories from template
            for (const dir of template.directories) {
              const dirPath = join(baseDirPath, dir.path)
              ensureDirSync(dirPath)
            }

            // Create files from template
            for (const file of template.files) {
              const filePath = join(baseDirPath, file.path)
              const fileDir = dirname(filePath)
              ensureDirSync(fileDir)
              writeFileSync(filePath, file.content, 'utf-8')
            }
          }

          return { success: true }
        } catch (error) {
          console.error('Error executing template:', error)
          return { success: false, error: error.message }
        }
      }
    )
  }
}