import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';
import {
  IsBoolean,
  IsEnum,
  IsNumber,
  IsOptional,
  IsString,
  IsUUID,
  Length,
  MaxLength,
  Min,
} from 'class-validator';
import { Freight } from '@edr/types';

export class CreateSurchargeDto {
  @ApiProperty({ description: 'FK to surcharge_types.id' })
  @IsUUID()
  surchargeTypeId!: string;

  @ApiProperty({ description: 'Display name for this surcharge line item', maxLength: 255 })
  @IsString()
  @MaxLength(255)
  feeName!: string;

  @ApiPropertyOptional({ description: 'Human-readable description of when this surcharge is triggered' })
  @IsOptional()
  @IsString()
  triggerDescription?: string;

  @ApiProperty({ enum: Freight.CalculationMethod, default: Freight.CalculationMethod.PER_TON })
  @IsEnum(Freight.CalculationMethod)
  calculationMethod!: Freight.CalculationMethod;

  @ApiProperty({ description: 'Rate amount (per ton, flat, or percentage)' })
  @IsNumber()
  @Min(0)
  rate!: number;

  @ApiProperty({ description: 'ISO 4217 currency code', default: 'USD' })
  @IsString()
  @Length(3, 3)
  currency!: string;

  @ApiPropertyOptional({ default: false })
  @IsOptional()
  @IsBoolean()
  applyToRail?: boolean;

  @ApiPropertyOptional({ default: false })
  @IsOptional()
  @IsBoolean()
  applyToFirstMile?: boolean;

  @ApiPropertyOptional({ default: false })
  @IsOptional()
  @IsBoolean()
  applyToLastMile?: boolean;

  @ApiPropertyOptional({ default: true })
  @IsOptional()
  @IsBoolean()
  isActive?: boolean;
}