export type AuthType = 'PASSWORD' | 'PRIVATE_KEY'
export type ConnectionSetupMode = 'NONE' | 'PASSWORD_BOOTSTRAP'
export type SessionTreeNodeType = 'folder' | 'connection'
export type SessionTreeSortMode = 'manual' | 'nameAsc'
export type WorkspaceLayout = 'split' | 'terminal' | 'sftp'

export interface LoginResponse {
  token: string
  username: string
  displayName: string
  passwordChangeRequired: boolean
}

export interface CurrentUser {
  username: string
  displayName: string
  passwordChangeRequired?: boolean
}

export interface Connection {
  id: number
  name: string
  host: string
  port: number
  username: string
  authType: AuthType
  createdAt: string
  updatedAt: string
}

export interface ConnectionCreateRequest {
  name: string
  host: string
  port?: number
  username: string
  authType?: AuthType
  password?: string
  privateKey?: string
  passphrase?: string
  setupMode?: ConnectionSetupMode
  bootstrapPassword?: string
}

export interface SessionTreeNodePayload {
  id: string
  type: SessionTreeNodeType
  name: string
  parentId: string | null
  order: number
  connectionId?: number
  expanded?: boolean
  createdAt: number
  updatedAt: number
}

export interface SessionTreeLayoutPayload {
  nodes: SessionTreeNodePayload[]
  sortMode?: SessionTreeSortMode
}

export interface SftpFileInfo {
  name: string
  directory: boolean
  size: number
  mtime: number
}

export interface UploadTask {
  taskId: string
  status: 'queued' | 'running' | 'success' | 'error'
  progress: number
  transferredBytes: number
  totalBytes: number
  filename: string
  error?: string
  createdAt: number
  startedAt: number
  finishedAt: number
}

export interface RemoteTransferTask {
  taskId: string
  status: 'queued' | 'running' | 'success' | 'error' | 'cancelled'
  progress: number
  transferredBytes: number
  totalBytes: number
  error?: string
  createdAt: number
  startedAt: number
  finishedAt: number
}

export interface BatchCommandResult {
  connectionId: number
  connectionName: string
  success: boolean
  output: string | null
  error: string | null
  durationMs: number
}

export interface BatchCommandResponse {
  command: string
  total: number
  successCount: number
  failureCount: number
  results: BatchCommandResult[]
}

export interface MonitorMetrics {
  cpuUsage?: number | null
  memTotal?: number | null
  memUsed?: number | null
  memUsage?: number | null
  diskUsage?: number | null
  load1?: number | null
  cpuCores?: number | null
  uptime?: string | null
}

export interface WorkspaceTab {
  id: number
  name: string
  connection: Connection
}

export interface TransferTaskItem {
  id: string
  label: string
  status: 'queued' | 'running' | 'success' | 'error' | 'cancelled'
  progress: number
  message: string
  taskId?: string
}

export interface TransferTaskGroup {
  id: string
  mode: 'LOCAL_TO_MANY' | 'REMOTE_TO_MANY'
  title: string
  status: 'queued' | 'running' | 'success' | 'error' | 'cancelled'
  progress: number
  createdAt: string
  items: TransferTaskItem[]
}