import { Type } from 'class-transformer';
import {
  IsInt,
  IsNotEmpty,
  IsObject,
  IsOptional,
  IsString,
  MaxLength,
  ValidateNested,
} from 'class-validator';

export class WhatsappMediaDto {
  @IsString()
  @IsNotEmpty()
  data: string;

  @IsString()
  @IsNotEmpty()
  @MaxLength(160)
  mimetype: string;

  @IsOptional()
  @IsString()
  @MaxLength(260)
  filename?: string;
}

export class SendWhatsappMessageDto {
  @IsString()
  @IsNotEmpty()
  to: string;

  @IsString()
  message: string;

  @IsOptional()
  @IsString()
  @MaxLength(120)
  senderName?: string;

  @IsOptional()
  @ValidateNested()
  @Type(() => WhatsappMediaDto)
  media?: WhatsappMediaDto;
}

export class StartAttendanceDto {
  @IsString()
  @IsNotEmpty()
  to: string;

  @Type(() => Number)
  @IsInt()
  templateId: number;

  @Type(() => Number)
  @IsInt()
  userId: number;

  @IsOptional()
  @Type(() => Number)
  @IsInt()
  areaId?: number | null;

  @IsOptional()
  @IsObject()
  variables?: Record<string, string | null | undefined>;
}

export class AssignChatDto {
  @IsString()
  @IsNotEmpty()
  chatId: string;

  @IsString()
  @IsNotEmpty()
  userId: string;

  @IsOptional()
  @IsString()
  areaId?: string;
}

export class TransferChatDto {
  @IsString()
  @IsNotEmpty()
  chatId: string;

  @Type(() => Number)
  @IsInt()
  areaId: number;

  @IsOptional()
  @Type(() => Number)
  @IsInt()
  userId?: number | null;

  @IsOptional()
  @IsString()
  note?: string | null;
}

export class CloseChatDto {
  @IsString()
  @IsNotEmpty()
  chatId: string;

  @IsOptional()
  userId?: string | number | null;
}

export class CreateWhatsappTemplateDto {
  @IsString()
  @IsNotEmpty()
  @MaxLength(255)
  name: string;

  @IsString()
  @IsNotEmpty()
  content: string;

  @IsOptional()
  @Type(() => Number)
  @IsInt()
  areaId?: number | null;

  @IsOptional()
  @IsString()
  @MaxLength(40)
  requestedByRole?: string;

  @IsOptional()
  @IsString()
  @MaxLength(40)
  category?: string;
}

export class UpdateWhatsappTemplateDto {
  @IsString()
  @IsNotEmpty()
  @MaxLength(255)
  name: string;

  @IsString()
  @IsNotEmpty()
  content: string;

  @IsOptional()
  @Type(() => Number)
  @IsInt()
  areaId?: number | null;

  @IsOptional()
  @IsString()
  @MaxLength(40)
  category?: string;
}