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

// ==================== PAGINATION ====================
export class PaginationDto {
  @ApiPropertyOptional({ default: 1 })
  @IsOptional()
  @Type(() => Number)
  @IsNumber()
  @Min(1)
  page?: number;

  @ApiPropertyOptional({ default: 20 })
  @IsOptional()
  @Type(() => Number)
  @IsNumber()
  @Min(1)
  @Max(100)
  limit?: number;
}

// ==================== ORDERS ====================
export class OrderQueryDto extends PaginationDto {
  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  status?: string;

  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  platform?: string;

  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  startDate?: string;

  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  endDate?: string;

  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  @MaxLength(200)
  search?: string;
}

// ==================== PRODUCTS ====================
export class CreateProductDto {
  @ApiProperty()
  @IsString()
  @IsNotEmpty()
  @MaxLength(500)
  title: string;

  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  @MaxLength(5000)
  description?: string;

  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  @MaxLength(100)
  sku?: string;

  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  @MaxLength(200)
  barcode?: string;

  @ApiPropertyOptional()
  @IsOptional()
  @Type(() => Number)
  @IsNumber()
  @Min(0)
  price?: number;

  @ApiPropertyOptional()
  @IsOptional()
  @Type(() => Number)
  @IsNumber()
  @Min(0)
  costPrice?: number;

  @ApiPropertyOptional()
  @IsOptional()
  @Type(() => Number)
  @IsNumber()
  @Min(0)
  stock?: number;

  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  @MaxLength(200)
  category?: string;

  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  @MaxLength(200)
  brand?: string;
}

export class UpdateProductDto {
  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  @MaxLength(500)
  title?: string;

  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  @MaxLength(5000)
  description?: string;

  @ApiPropertyOptional()
  @IsOptional()
  @Type(() => Number)
  @IsNumber()
  @Min(0)
  price?: number;

  @ApiPropertyOptional()
  @IsOptional()
  @Type(() => Number)
  @IsNumber()
  @Min(0)
  costPrice?: number;

  @ApiPropertyOptional()
  @IsOptional()
  @Type(() => Number)
  @IsNumber()
  @Min(0)
  stock?: number;

  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  @MaxLength(200)
  category?: string;

  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  @MaxLength(200)
  brand?: string;
}

export class BulkActionDto {
  @ApiProperty()
  @IsString()
  @IsNotEmpty()
  action: string;

  @ApiProperty()
  @IsArray()
  @IsString({ each: true })
  productIds: string[];

  @ApiProperty()
  @IsString()
  tenantId: string;
}

// ==================== INVENTORY ====================
export class InventoryQueryDto extends PaginationDto {
  @ApiPropertyOptional()
  @IsOptional()
  @IsEnum(['critical', 'low', 'ok'])
  status?: 'critical' | 'low' | 'ok';

  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  @MaxLength(200)
  category?: string;

  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  @MaxLength(200)
  search?: string;

  @ApiPropertyOptional()
  @IsOptional()
  @IsEnum(['stock', 'name', 'trend'])
  sortBy?: 'stock' | 'name' | 'trend';

  @ApiPropertyOptional()
  @IsOptional()
  @IsEnum(['asc', 'desc'])
  sortOrder?: 'asc' | 'desc';
}

export class StockUpdateDto {
  @ApiProperty()
  @Type(() => Number)
  @IsNumber()
  @Min(0)
  stock: number;

  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  @MaxLength(500)
  reason?: string;
}

export class BulkStockUpdateDto {
  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  tenantId?: string;

  @ApiProperty()
  @IsArray()
  updates: { id: string; stock: number }[];
}

// ==================== MARKETPLACE ====================
export class MarketplaceStockUpdateDto {
  @ApiProperty()
  @IsString()
  @IsNotEmpty()
  sku: string;

  @ApiProperty()
  @Type(() => Number)
  @IsNumber()
  @Min(0)
  stock: number;

  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  requestKey?: string;
}

export class MarketplacePriceUpdateDto {
  @ApiProperty()
  @IsString()
  @IsNotEmpty()
  sku: string;

  @ApiProperty()
  @Type(() => Number)
  @IsNumber()
  @Min(0)
  price: number;

  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  requestKey?: string;
}