import { Transform } from 'class-transformer';
import {
  IsBoolean,
  IsEnum,
  IsInt,
  IsOptional,
  IsString,
  Max,
  MaxLength,
  Min,
  MinLength,
  ValidateIf,
} from 'class-validator';
import { SmtpSecurityMode } from '../../../database/entities';

export enum UserSmtpMode {
  SYSTEM = 'SYSTEM',
  CUSTOM = 'CUSTOM',
}

const trimmed = ({ value }: { value: unknown }) =>
  typeof value === 'string' ? value.trim() : value;

export class UpdateUserSmtpSettingsDto {
  @IsEnum(UserSmtpMode)
  mode!: UserSmtpMode;

  @ValidateIf((dto: UpdateUserSmtpSettingsDto) => dto.mode === UserSmtpMode.CUSTOM)
  @Transform(trimmed)
  @IsString()
  @MinLength(1)
  @MaxLength(255)
  host?: string;

  @ValidateIf((dto: UpdateUserSmtpSettingsDto) => dto.mode === UserSmtpMode.CUSTOM)
  @IsInt()
  @Min(1)
  @Max(65535)
  port?: number;

  @ValidateIf((dto: UpdateUserSmtpSettingsDto) => dto.mode === UserSmtpMode.CUSTOM)
  @IsEnum(SmtpSecurityMode)
  securityMode?: SmtpSecurityMode;

  @IsOptional()
  @Transform(trimmed)
  @IsString()
  @MaxLength(255)
  username?: string | null;

  @IsOptional()
  @IsString()
  @MaxLength(512)
  password?: string | null;

  @IsOptional()
  @Transform(trimmed)
  @IsString()
  @MaxLength(200)
  fromName?: string | null;

  @IsOptional()
  @IsBoolean()
  enabled = true;
}