import { FormalityLevel } from "@prisma/client";
import { IsString, IsEnum, IsOptional, IsBoolean, MinLength, MaxLength } from "class-validator";

/**
 * DTO for updating an existing personality
 * All fields are optional; only provided fields are updated.
 */
export class UpdatePersonalityDto {
  @IsOptional()
  @IsString({ message: "name must be a string" })
  @MinLength(1, { message: "name must not be empty" })
  @MaxLength(255, { message: "name must not exceed 255 characters" })
  name?: string;

  @IsOptional()
  @IsString({ message: "description must be a string" })
  @MaxLength(2000, { message: "description must not exceed 2000 characters" })
  description?: string;

  @IsOptional()
  @IsString({ message: "tone must be a string" })
  @MinLength(1, { message: "tone must not be empty" })
  @MaxLength(100, { message: "tone must not exceed 100 characters" })
  tone?: string;

  @IsOptional()
  @IsEnum(FormalityLevel, { message: "formalityLevel must be a valid FormalityLevel" })
  formalityLevel?: FormalityLevel;

  @IsOptional()
  @IsString({ message: "systemPromptTemplate must be a string" })
  @MinLength(1, { message: "systemPromptTemplate must not be empty" })
  systemPromptTemplate?: string;

  @IsOptional()
  @IsBoolean({ message: "isDefault must be a boolean" })
  isDefault?: boolean;

  @IsOptional()
  @IsBoolean({ message: "isActive must be a boolean" })
  isActive?: boolean;
}