enum InboxMessageType { friendRequest, calendar, system, group }

enum InboxMessageStatus { pending, accepted, rejected, dismissed }

class InboxMessage {
  final String id;
  final String recipientId;
  final String? senderId;
  final InboxMessageType messageType;
  final String? scheduleItemId;
  final String? friendshipId;
  final Map<String, dynamic>? content;
  final bool isRead;
  final InboxMessageStatus status;
  final DateTime createdAt;

  const InboxMessage({
    required this.id,
    required this.recipientId,
    required this.senderId,
    required this.messageType,
    required this.scheduleItemId,
    required this.friendshipId,
    required this.content,
    required this.isRead,
    required this.status,
    required this.createdAt,
  });

  factory InboxMessage.fromJson(Map<String, dynamic> json) {
    return InboxMessage(
      id: json['id'] as String,
      recipientId: json['recipient_id'] as String,
      senderId: json['sender_id'] as String?,
      messageType: _messageTypeFromApi(json['message_type'] as String),
      scheduleItemId: json['schedule_item_id'] as String?,
      friendshipId: json['friendship_id'] as String?,
      content: json['content'] as Map<String, dynamic>?,
      isRead: json['is_read'] as bool,
      status: _messageStatusFromApi(json['status'] as String),
      createdAt: DateTime.parse(json['created_at'] as String),
    );
  }
}

InboxMessageType _messageTypeFromApi(String raw) {
  switch (raw) {
    case 'friend_request':
      return InboxMessageType.friendRequest;
    case 'calendar':
      return InboxMessageType.calendar;
    case 'system':
      return InboxMessageType.system;
    case 'group':
      return InboxMessageType.group;
    default:
      throw StateError('Unsupported inbox message type: $raw');
  }
}

InboxMessageStatus _messageStatusFromApi(String raw) {
  switch (raw) {
    case 'pending':
      return InboxMessageStatus.pending;
    case 'accepted':
      return InboxMessageStatus.accepted;
    case 'rejected':
      return InboxMessageStatus.rejected;
    case 'dismissed':
      return InboxMessageStatus.dismissed;
    default:
      throw StateError('Unsupported inbox message status: $raw');
  }
}