import { IsString, IsNotEmpty, IsOptional, IsEnum, MaxLength } from 'class-validator';
import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';
import { MessageType } from '@prisma/client';

export class CreateMessageDto {
  @ApiProperty({ description: 'Message content', maxLength: 5000 })
  @IsString()
  @IsNotEmpty()
  @MaxLength(5000)
  content: string;

  @ApiPropertyOptional({ description: 'Message type', enum: MessageType, default: MessageType.TEXT })
  @IsOptional()
  @IsEnum(MessageType)
  messageType?: MessageType = MessageType.TEXT;

  @ApiPropertyOptional({ description: 'File URL for file/image messages' })
  @IsOptional()
  @IsString()
  fileUrl?: string;

  @ApiPropertyOptional({ description: 'Original file name' })
  @IsOptional()
  @IsString()
  fileName?: string;

  @ApiPropertyOptional({ description: 'File size in bytes' })
  @IsOptional()
  fileSize?: number;

  @ApiPropertyOptional({ description: 'MIME type of the file' })
  @IsOptional()
  @IsString()
  mimeType?: string;
}