/**
 * SFTP IPC Handlers
 * 处理 SFTP 连接和文件操作相关 IPC
 */

import { ipcMain, IpcMainInvokeEvent } from 'electron'
import type { SSHService } from '../services/ssh-service'

// IPC channel names
export const SFTP_CHANNELS = {
  CONNECT: 'sftp:connect',
  LIST_DIRECTORY: 'sftp:listDirectory',
  UPLOAD: 'sftp:upload',
  DOWNLOAD: 'sftp:download',
  RENAME: 'sftp:rename',
  DELETE: 'sftp:delete',
  MKDIR: 'sftp:mkdir',
  PROGRESS: 'sftp:progress',
} as const

export interface SFTPIPCOptions {
  sshService: SSHService
  mainWindowGetter: () => Electron.BrowserWindow | null
}

// ===== 彩色调试日志 =====
const DEBUG = true
function logHeader(msg: string) {
  console.log(`%c${msg}`, 'background: #16a085; color: #fff; padding: 4px 8px; border-radius: 4px; font-weight: bold;')
}
function logInfo(label: string, value: any) {
  console.log(`%c${label}:%c ${value}`, 'background: #2c3e50; color: #fff; padding: 2px 6px; border-radius: 3px;', 'color: #1abc9c; font-weight: bold;')
}
function logSuccess(msg: string) {
  console.log(`%c✓ ${msg}`, 'color: #27ae60; font-weight: bold;')
}
function logError(msg: string) {
  console.log(`%c✗ ${msg}`, 'color: #e74c3c; font-weight: bold;')
}

export function registerSFTPIPCHandlers(options: SFTPIPCOptions): void {
  const { sshService, mainWindowGetter } = options

  // SFTP connect
  ipcMain.handle(SFTP_CHANNELS.CONNECT, async (_event: IpcMainInvokeEvent, connectionId: string) => {
    logHeader('📁 SFTP IPC CONNECT')
    logInfo('connectionId', connectionId)
    
    try {
      const sftp = await sshService.createSFTP(connectionId)
      logSuccess(`SFTP connected: ${sftp.id}`)
      return { success: true, sftpId: sftp.id }
    } catch (error: any) {
      logError(`SFTP connect failed: ${error.message}`)
      return { success: false, error: error.message }
    }
  })

  // SFTP list directory
  ipcMain.handle(SFTP_CHANNELS.LIST_DIRECTORY, async (_event: IpcMainInvokeEvent, sftpId: string, dirPath: string) => {
    logHeader('📁 SFTP IPC LIST')
    logInfo('sftpId', sftpId)
    logInfo('dirPath', dirPath)
    
    try {
      const files = await sshService.sftpListDirectory(sftpId, dirPath)
      logSuccess(`Listed ${files.length} items`)
      return { success: true, files }
    } catch (error: any) {
      logError(`List failed: ${error.message}`)
      return { success: false, error: error.message }
    }
  })

  // SFTP upload file
  ipcMain.handle(SFTP_CHANNELS.UPLOAD, async (
    _event: IpcMainInvokeEvent,
    sftpId: string,
    localPath: string,
    remotePath: string
  ) => {
    logHeader('📤 SFTP IPC UPLOAD')
    logInfo('sftpId', sftpId)
    logInfo('localPath', localPath)
    logInfo('remotePath', remotePath)
    
    try {
      const mainWindow = mainWindowGetter()
      await sshService.sftpUpload(sftpId, localPath, remotePath, (transferred, total) => {
        mainWindow?.webContents.send(SFTP_CHANNELS.PROGRESS, sftpId, {
          transferred,
          total,
          percentage: Math.round((transferred / total) * 100),
        })
      })
      logSuccess('Upload complete')
      return { success: true }
    } catch (error: any) {
      logError(`Upload failed: ${error.message}`)
      return { success: false, error: error.message }
    }
  })

  // SFTP download file
  ipcMain.handle(SFTP_CHANNELS.DOWNLOAD, async (
    _event: IpcMainInvokeEvent,
    sftpId: string,
    remotePath: string,
    localPath: string
  ) => {
    logHeader('📥 SFTP IPC DOWNLOAD')
    logInfo('sftpId', sftpId)
    logInfo('remotePath', remotePath)
    logInfo('localPath', localPath)
    
    try {
      const mainWindow = mainWindowGetter()
      await sshService.sftpDownload(sftpId, remotePath, localPath, (transferred, total) => {
        mainWindow?.webContents.send(SFTP_CHANNELS.PROGRESS, sftpId, {
          transferred,
          total,
          percentage: Math.round((transferred / total) * 100),
        })
      })
      logSuccess('Download complete')
      return { success: true }
    } catch (error: any) {
      logError(`Download failed: ${error.message}`)
      return { success: false, error: error.message }
    }
  })

  // SFTP rename
  ipcMain.handle(SFTP_CHANNELS.RENAME, async (
    _event: IpcMainInvokeEvent,
    sftpId: string,
    oldPath: string,
    newPath: string
  ) => {
    logHeader('📁 SFTP IPC RENAME')
    logInfo('sftpId', sftpId)
    logInfo('oldPath', oldPath)
    logInfo('newPath', newPath)
    
    try {
      await sshService.sftpRename(sftpId, oldPath, newPath)
      logSuccess('Rename complete')
      return { success: true }
    } catch (error: any) {
      logError(`Rename failed: ${error.message}`)
      return { success: false, error: error.message }
    }
  })

  // SFTP delete
  ipcMain.handle(SFTP_CHANNELS.DELETE, async (
    _event: IpcMainInvokeEvent,
    sftpId: string,
    filePath: string,
    isDirectory: boolean
  ) => {
    logHeader('📁 SFTP IPC DELETE')
    logInfo('sftpId', sftpId)
    logInfo('filePath', filePath)
    logInfo('isDirectory', isDirectory)
    
    try {
      await sshService.sftpDelete(sftpId, filePath, isDirectory)
      logSuccess('Delete complete')
      return { success: true }
    } catch (error: any) {
      logError(`Delete failed: ${error.message}`)
      return { success: false, error: error.message }
    }
  })

  // SFTP mkdir
  ipcMain.handle(SFTP_CHANNELS.MKDIR, async (
    _event: IpcMainInvokeEvent,
    sftpId: string,
    dirPath: string
  ) => {
    logHeader('📁 SFTP IPC MKDIR')
    logInfo('sftpId', sftpId)
    logInfo('dirPath', dirPath)
    
    try {
      await sshService.sftpMkdir(sftpId, dirPath)
      logSuccess('Mkdir complete')
      return { success: true }
    } catch (error: any) {
      logError(`Mkdir failed: ${error.message}`)
      return { success: false, error: error.message }
    }
  })
}