import type { ChannelAttachmentDto } from '@mosaicstack/types';
import { IsOptional, IsString, IsUUID, MaxLength } from 'class-validator';

export class ChatRequestDto {
  @IsOptional()
  @IsUUID()
  conversationId?: string;

  @IsString()
  @MaxLength(10_000)
  content!: string;
}

export class ChatSocketMessageDto {
  @IsOptional()
  @IsUUID()
  conversationId?: string;

  @IsString()
  @MaxLength(10_000)
  content!: string;

  @IsOptional()
  @IsString()
  @MaxLength(255)
  provider?: string;

  @IsOptional()
  @IsString()
  @MaxLength(255)
  modelId?: string;

  @IsOptional()
  @IsUUID()
  agentId?: string;

  /** Validated channel attachment references; binary content is not embedded. */
  attachments?: readonly ChannelAttachmentDto[];
}