import {
  IsString,
  IsOptional,
  IsInt,
  IsNumber,
  Min,
  IsArray,
  IsIn,
  MaxLength,
} from 'class-validator';
import { ApiPropertyOptional } from '@nestjs/swagger';

const TAGS = [
  'DIVIDEND',
  'GROWTH',
  'DEFENSIVE',
  'SPECULATIVE',
  'BOND',
  'ETF',
  'GOVERNMENT',
  'CASH',
] as const;

export class UpdatePositionDto {
  @ApiPropertyOptional({ example: 15 })
  @IsInt()
  @Min(0)
  @IsOptional()
  quantity?: number;

  @ApiPropertyOptional({ example: 260.0 })
  @IsNumber()
  @Min(0)
  @IsOptional()
  buyPrice?: number;

  @ApiPropertyOptional({ example: '2026-06-15' })
  @IsString()
  @IsOptional()
  buyDate?: string;

  @ApiPropertyOptional({ example: 'Докупка' })
  @IsString()
  @IsOptional()
  @MaxLength(500)
  notes?: string;

  @ApiPropertyOptional({ example: ['DIVIDEND'], enum: TAGS, isArray: true })
  @IsArray()
  @IsIn(TAGS, { each: true })
  @IsOptional()
  tags?: string[];
}