import {
  IsString,
  IsIn,
  IsOptional,
  IsBoolean,
  IsNumber,
  IsInt,
  IsArray,
  ValidateIf,
  MaxLength,
  Min,
  Max,
  IsNotEmpty,
} from 'class-validator';
import { Type } from 'class-transformer';
import { ApiProperty } from '@nestjs/swagger';

export class CommandItemDto {
  @IsString()
  @IsNotEmpty()
  @MaxLength(255)
  @ApiProperty({ description: 'Item name', example: 'Office Chair' })
  name: string;

  @IsString()
  @IsIn(['service', 'non-inventory', 'inventory'])
  @ApiProperty({
    description: 'Item type',
    enum: ['service', 'non-inventory', 'inventory'],
    example: 'inventory',
  })
  type: 'service' | 'non-inventory' | 'inventory';

  @IsOptional()
  @IsString()
  @MaxLength(255)
  @ApiProperty({
    description: 'Item code/SKU',
    required: false,
    example: 'ITEM-001',
  })
  code?: string;

  // Purchase attributes
  @IsOptional()
  @IsBoolean()
  @ApiProperty({
    description: 'Whether the item can be purchased',
    required: false,
    example: true,
  })
  purchasable?: boolean;

  @IsOptional()
  @IsNumber({ maxDecimalPlaces: 3 })
  @Min(0)
  @ValidateIf((o) => o.purchasable === true)
  @ApiProperty({
    description: 'Cost price of the item',
    required: false,
    minimum: 0,
    example: 100.5,
  })
  costPrice?: number;

  @IsOptional()
  @IsInt()
  @Min(0)
  @ValidateIf((o) => o.purchasable === true)
  @ApiProperty({
    description: 'ID of the cost account',
    required: false,
    minimum: 0,
    example: 1,
  })
  costAccountId?: number;

  // Sell attributes
  @IsOptional()
  @IsBoolean()
  @ApiProperty({
    description: 'Whether the item can be sold',
    required: false,
    example: true,
  })
  sellable?: boolean;

  @IsOptional()
  @IsNumber({ maxDecimalPlaces: 3 })
  @Min(0)
  @ValidateIf((o) => o.sellable === true)
  @ApiProperty({
    description: 'Selling price of the item',
    required: false,
    minimum: 0,
    example: 150.75,
  })
  sellPrice?: number;

  @IsOptional()
  @IsInt()
  @Min(0)
  @ValidateIf((o) => o.sellable === true)
  @ApiProperty({
    description: 'ID of the sell account',
    required: false,
    minimum: 0,
    example: 2,
  })
  sellAccountId?: number;

  @IsOptional()
  @IsInt()
  @Min(0)
  @ValidateIf((o) => o.type === 'inventory')
  @ApiProperty({
    description: 'ID of the inventory account (required for inventory items)',
    required: false,
    minimum: 0,
    example: 3,
  })
  inventoryAccountId?: number;

  @IsOptional()
  @IsString()
  @ApiProperty({
    description: 'Description shown on sales documents',
    required: false,
    example: 'High-quality ergonomic office chair',
  })
  sellDescription?: string;

  @IsOptional()
  @IsString()
  @ApiProperty({
    description: 'Description shown on purchase documents',
    required: false,
    example: 'Ergonomic office chair with adjustable height',
  })
  purchaseDescription?: string;

  @IsOptional()
  @IsInt()
  @ApiProperty({
    description: 'ID of the tax rate applied to sales',
    required: false,
    example: 1,
  })
  sellTaxRateId?: number;

  @IsOptional()
  @IsInt()
  @ApiProperty({
    description: 'ID of the tax rate applied to purchases',
    required: false,
    example: 1,
  })
  purchaseTaxRateId?: number;

  @IsOptional()
  @IsInt()
  @Min(0)
  @ApiProperty({
    description: 'ID of the item category',
    required: false,
    minimum: 0,
    example: 5,
  })
  categoryId?: number;

  @IsOptional()
  @IsString()
  @ApiProperty({
    description: 'Additional notes about the item',
    required: false,
    example: 'Available in multiple colors',
  })
  note?: string;

  @IsOptional()
  @IsBoolean()
  @ApiProperty({
    description: 'Whether the item is active',
    required: false,
    default: true,
    example: true,
  })
  active?: boolean;

  @IsOptional()
  @IsArray()
  @Type(() => Number)
  @IsInt({ each: true })
  @ApiProperty({
    description: 'IDs of media files associated with the item',
    required: false,
    type: [Number],
    example: [1, 2, 3],
  })
  mediaIds?: number[];
}

export class CreateItemDto extends CommandItemDto {}
export class EditItemDto extends CommandItemDto {}