import { IsString, IsOptional, IsNotEmpty, IsEmail, MaxLength, IsArray, ArrayMaxSize, ValidateNested, IsIn } from 'class-validator';
import { Transform, Type } from 'class-transformer';
import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';

export class ImportPlannedTabEntryDto {
  @ApiProperty({ example: 'Jan Peeters' })
  @IsString()
  @IsNotEmpty()
  @MaxLength(100)
  customerName: string;

  @ApiPropertyOptional({ example: 'jan@example.com' })
  @IsOptional()
  @Transform(({ value }) => (typeof value === 'string' ? value.trim() || undefined : value))
  @IsEmail()
  email?: string;
}

export class ImportPlannedTabsDto {
  @ApiProperty({ type: [ImportPlannedTabEntryDto] })
  @IsArray()
  @ArrayMaxSize(5000)
  @ValidateNested({ each: true })
  @Type(() => ImportPlannedTabEntryDto)
  entries: ImportPlannedTabEntryDto[];

  @ApiProperty({
    enum: ['merge', 'replace'],
    description: 'merge adds new names and updates emails; replace also removes names that are not in the import',
  })
  @IsIn(['merge', 'replace'])
  mode: 'merge' | 'replace';
}