export type RoleState = 'role-selection' | 'dashboard' | 'classroom'

export type Role = 'teacher' | 'student' | 'observer'

export interface User {
  id: string
  name: string
  email: string
  role: Role
}

export interface ClassroomDto {
  id: string
  name: string
  description?: string
  subject?: string
  teacherId: string
  teacherName: string
  scheduledStartTime: string
  actualStartTime?: string
  endTime?: string
  duration?: number
  maxParticipants?: number
  isActive: boolean
  isScheduled: boolean
  participantCount: number
  canJoin: boolean
  settingsDto?: ClassroomSettingsDto
}

export interface ClassroomSettingsDto {
  allowHandRaise: boolean
  allowStudentChat: boolean
  allowPrivateMessages: boolean
  allowStudentScreenShare: boolean
  defaultMicrophoneState: 'muted' | 'unmuted'
  defaultCameraState: 'on' | 'off'
  defaultLayout: string
  autoMuteNewParticipants: boolean
}

export interface ClassAttendanceDto {
  id: string
  sessionId: string
  studentId: string
  studentName: string
  joinTime: string
  leaveTime?: string
  totalDurationMinutes: number
}

export type MediaType = 'audio' | 'video' | 'screen'

export interface SignalingMessageDto {
  type: MediaType
  fromUserId: string
  toUserId: string
  data: any
}

export interface ClassParticipantDto {
  id: string
  name: string
  isTeacher: boolean
  isObserver?: boolean
  isAudioMuted?: boolean
  isVideoMuted?: boolean
  stream?: MediaStream
  screenStream?: MediaStream
  isScreenSharing?: boolean
  peerConnection?: RTCPeerConnection
}

export type messageType = 'public' | 'private' | 'announcement'

export interface ClassChatDto {
  id: string
  senderId: string
  senderName: string
  message: string
  timestamp: string
  isTeacher: boolean
  recipientId?: string // Özel mesaj için
  recipientName?: string
  messageType: messageType
}

export type VideoLayoutType = 'grid' | 'sidebar' | 'teacher-focus'

export interface VideoLayoutDto {
  id: string
  name: string
  type: VideoLayoutType
  description: string
}

export interface TeacherLayoutDto extends VideoLayoutDto {
  id: 'teacher-focus'
  name: 'Öğretmen Odaklı'
  type: 'teacher-focus'
  description: 'Öğretmen tam ekranda, öğrenciler küçük panelde'
}

export interface ScheduledClassDto {
  id: string
  name: string
  scheduledTime: string
  duration: number
  canJoin: boolean
}

export interface HandRaiseDto {
  id: string
  studentId: string
  studentName: string
  timestamp: string
  isActive: boolean
}

export interface ClassDocumentDto {
  id: string
  name: string
  url: string
  type: string
  size: number
  uploadedAt: string
  uploadedBy: string
  isPresentation?: boolean
  totalPages?: number
}

export interface ScreenShareRequestDto {
  userId: string
  userName: string
  isActive: boolean
}