import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';
import { IsBoolean, IsEnum, IsInt, IsOptional, IsString, IsUUID, Max, MaxLength, Min } from 'class-validator';

import {
  DEFAULT_MAX_STACK_HEIGHT,
  WAREHOUSE_ZONE_STACK_STATUSES,
  WarehouseZoneStackStatus,
} from '../entities/warehouse-zone-stack.entity';
import {
  WAREHOUSE_ZONE_SLOT_STATUSES,
  WarehouseZoneSlotStatus,
} from '../entities/warehouse-zone-slot.entity';

/** Nobody stacks boxes this high; the cap is here to catch a typo'd 30. */
const MAX_SUPPORTED_STACK_HEIGHT = 10;

export class CreateWarehouseZoneStackDto {
  @ApiPropertyOptional({ format: 'uuid', description: 'Optional — taken from the route param when omitted' })
  @IsOptional()
  @IsUUID()
  zoneId?: string;

  @ApiProperty({ example: 'ZA-001' })
  @IsString()
  @MaxLength(40)
  code!: string;

  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  @MaxLength(160)
  name?: string;

  @ApiPropertyOptional({ description: 'Physical row label' })
  @IsOptional()
  @IsString()
  @MaxLength(20)
  row?: string;

  @ApiPropertyOptional({ description: 'Physical bay label' })
  @IsOptional()
  @IsString()
  @MaxLength(20)
  bay?: string;

  @ApiPropertyOptional({ description: 'Physical position label' })
  @IsOptional()
  @IsString()
  @MaxLength(20)
  position?: string;

  @ApiPropertyOptional({
    default: DEFAULT_MAX_STACK_HEIGHT,
    description: 'One slot is generated per level, 1 to this height.',
  })
  @IsOptional()
  @IsInt()
  @Min(1)
  @Max(MAX_SUPPORTED_STACK_HEIGHT)
  maxStackHeight?: number;
}

export class UpdateWarehouseZoneStackDto {
  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  @MaxLength(40)
  code?: string;

  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  @MaxLength(160)
  name?: string;

  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  @MaxLength(20)
  row?: string;

  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  @MaxLength(20)
  bay?: string;

  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  @MaxLength(20)
  position?: string;

  @ApiPropertyOptional({ description: 'Raising it adds slots; lowering it removes the empty top levels.' })
  @IsOptional()
  @IsInt()
  @Min(1)
  @Max(MAX_SUPPORTED_STACK_HEIGHT)
  maxStackHeight?: number;

  @ApiPropertyOptional({ enum: WAREHOUSE_ZONE_STACK_STATUSES })
  @IsOptional()
  @IsEnum(WAREHOUSE_ZONE_STACK_STATUSES)
  status?: WarehouseZoneStackStatus;
}

export class UpdateWarehouseZoneSlotDto {
  @ApiPropertyOptional({
    enum: WAREHOUSE_ZONE_SLOT_STATUSES,
    description: 'Operator intent only. OCCUPIED is derived from inventory and cannot be set here.',
  })
  @IsOptional()
  @IsEnum(WAREHOUSE_ZONE_SLOT_STATUSES)
  status?: WarehouseZoneSlotStatus;

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