import {
  IsString,
  IsOptional,
  IsBoolean,
  IsInt,
  IsUUID,
  IsEnum,
  IsObject,
  IsArray,
  MinLength,
  MaxLength,
  ValidateNested,
} from 'class-validator';
import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';
import { Type } from 'class-transformer';
import { FieldType } from '@prisma/client';

export class FieldOptionDto {
  @ApiProperty({ description: 'Option value' })
  @IsString()
  value: string;

  @ApiProperty({ description: 'Option display label' })
  @IsString()
  label: string;

  @ApiPropertyOptional({ description: 'Sort order for this option' })
  @IsOptional()
  @IsInt()
  sortOrder?: number;
}

export class RangeConfigDto {
  @ApiProperty({ description: 'Minimum value' })
  min: number;

  @ApiProperty({ description: 'Maximum value' })
  max: number;

  @ApiPropertyOptional({ description: 'Step increment', default: 1 })
  @IsOptional()
  step?: number;
}

export class CreateFieldDto {
  @ApiProperty({ description: 'Section ID this field belongs to' })
  @IsUUID()
  sectionId: string;

  @ApiProperty({ description: 'Field name', example: 'Years in Business' })
  @IsString()
  @MinLength(2)
  @MaxLength(100)
  name: string;

  @ApiProperty({ description: 'Field type', enum: FieldType })
  @IsEnum(FieldType)
  fieldType: FieldType;

  @ApiPropertyOptional({ description: 'Help text for the field' })
  @IsOptional()
  @IsString()
  @MaxLength(500)
  description?: string;

  @ApiPropertyOptional({ description: 'Placeholder text' })
  @IsOptional()
  @IsString()
  @MaxLength(200)
  placeholder?: string;

  @ApiPropertyOptional({ description: 'Default value (JSON string for complex types)' })
  @IsOptional()
  @IsString()
  defaultValue?: string;

  @ApiPropertyOptional({ description: 'Sort order within the section', default: 0 })
  @IsOptional()
  @IsInt()
  sortOrder?: number;

  @ApiPropertyOptional({ description: 'Whether this field is active', default: true })
  @IsOptional()
  @IsBoolean()
  isActive?: boolean;

  @ApiPropertyOptional({ description: 'Whether this field is required', default: false })
  @IsOptional()
  @IsBoolean()
  isRequired?: boolean;

  @ApiPropertyOptional({ description: 'Validation rules (JSON object)' })
  @IsOptional()
  @IsObject()
  validation?: Record<string, any>;

  @ApiPropertyOptional({ description: 'Options for SELECT, RADIO, MULTI_SELECT, CHECKBOX_GROUP', type: [FieldOptionDto] })
  @IsOptional()
  @IsArray()
  @ValidateNested({ each: true })
  @Type(() => FieldOptionDto)
  options?: FieldOptionDto[];

  @ApiPropertyOptional({ description: 'Configuration for RANGE fields', type: RangeConfigDto })
  @IsOptional()
  @IsObject()
  rangeConfig?: RangeConfigDto;

  @ApiPropertyOptional({ description: 'UI configuration (JSON object)' })
  @IsOptional()
  @IsObject()
  uiConfig?: Record<string, any>;
}