import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';
import {
  ArrayNotEmpty,
  IsArray,
  IsIn,
  IsNotEmpty,
  IsOptional,
  IsString,
  IsUUID,
  Matches,
  MaxLength,
  ValidateIf,
} from 'class-validator';
import {
  PaginationQueryDto,
  UserRelationDto,
} from '../../../../common/http/response';
import { CORE_STATUSES } from '../../../../common/value-objects/status/status';
import {
  EMPLOYEE_CODE_MAX_LENGTH,
  EMPLOYEE_CODE_PATTERN,
  EMPLOYEE_NAME_MAX_LENGTH,
  EMPLOYEE_NAME_PATTERN,
  EMPLOYEE_POSITIONS,
} from '../employee-fields';

export class CreateEmployeeDto {
  @ApiProperty({ example: 'EMP_01', maxLength: EMPLOYEE_CODE_MAX_LENGTH })
  @IsString()
  @IsNotEmpty()
  @MaxLength(EMPLOYEE_CODE_MAX_LENGTH)
  @Matches(EMPLOYEE_CODE_PATTERN, {
    message: 'code must contain only letters, numbers, and underscores',
  })
  code!: string;

  @ApiProperty({
    example: 'Ada Lovelace',
    maxLength: EMPLOYEE_NAME_MAX_LENGTH,
  })
  @IsString()
  @IsNotEmpty()
  @MaxLength(EMPLOYEE_NAME_MAX_LENGTH)
  @Matches(EMPLOYEE_NAME_PATTERN, {
    message: 'name must contain only letters and spaces',
  })
  name!: string;

  @ApiProperty({ example: '+6281234567890' })
  @IsString()
  @IsNotEmpty()
  phone!: string;

  @ApiProperty({ enum: EMPLOYEE_POSITIONS, example: 'sales' })
  @IsIn([...EMPLOYEE_POSITIONS])
  position!: string;

  @ApiPropertyOptional({ enum: CORE_STATUSES })
  @IsOptional()
  @IsIn([...CORE_STATUSES])
  status?: string;

  @ApiPropertyOptional({ format: 'uuid' })
  @IsOptional()
  @IsUUID('4')
  userId?: string;
}

export class UpdateEmployeeDto {
  @ApiPropertyOptional({ example: 'EMP_01' })
  @IsOptional()
  @IsString()
  @IsNotEmpty()
  @MaxLength(EMPLOYEE_CODE_MAX_LENGTH)
  @Matches(EMPLOYEE_CODE_PATTERN, {
    message: 'code must contain only letters, numbers, and underscores',
  })
  code?: string;

  @ApiPropertyOptional({ example: 'Ada Lovelace' })
  @IsOptional()
  @IsString()
  @IsNotEmpty()
  @MaxLength(EMPLOYEE_NAME_MAX_LENGTH)
  @Matches(EMPLOYEE_NAME_PATTERN, {
    message: 'name must contain only letters and spaces',
  })
  name?: string;

  @ApiPropertyOptional({ example: '+6281234567890' })
  @IsOptional()
  @IsString()
  @IsNotEmpty()
  phone?: string;

  @ApiPropertyOptional({ enum: EMPLOYEE_POSITIONS })
  @IsOptional()
  @IsIn([...EMPLOYEE_POSITIONS])
  position?: string;

  @ApiPropertyOptional({ format: 'uuid', nullable: true })
  @ValidateIf((_, value) => value !== undefined)
  @IsUUID('4')
  userId?: string | null;
}

export class UpdateEmployeeStatusDto {
  @ApiProperty({ enum: CORE_STATUSES })
  @IsIn([...CORE_STATUSES])
  status!: string;
}

export class BulkIdsDto {
  @ApiProperty({ type: [String], format: 'uuid' })
  @IsArray()
  @ArrayNotEmpty()
  @IsUUID('4', { each: true })
  ids!: string[];
}

export class BulkStatusDto {
  @ApiProperty({ type: [String], format: 'uuid' })
  @IsArray()
  @ArrayNotEmpty()
  @IsUUID('4', { each: true })
  ids!: string[];

  @ApiProperty({ enum: CORE_STATUSES })
  @IsIn([...CORE_STATUSES])
  status!: string;
}

export class ListEmployeesQueryDto extends PaginationQueryDto {
  @ApiPropertyOptional()
  @IsOptional()
  @IsString()
  code?: string;

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

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

  @ApiPropertyOptional({ enum: EMPLOYEE_POSITIONS })
  @IsOptional()
  @IsIn([...EMPLOYEE_POSITIONS])
  position?: string;

  @ApiPropertyOptional({ enum: CORE_STATUSES })
  @IsOptional()
  @IsIn([...CORE_STATUSES])
  status?: string;

  @ApiPropertyOptional({ format: 'uuid' })
  @IsOptional()
  @IsUUID('4')
  userId?: string;

  @ApiPropertyOptional({
    description: 'Case-insensitive match on code or name',
  })
  @IsOptional()
  @IsString()
  search?: string;
}

export class EmployeeDto {
  @ApiProperty({ format: 'uuid' })
  id!: string;

  @ApiProperty()
  code!: string;

  @ApiProperty()
  name!: string;

  @ApiProperty({ example: '+6281234567890' })
  phone!: string;

  @ApiProperty({ enum: EMPLOYEE_POSITIONS })
  position!: string;

  @ApiProperty({ enum: CORE_STATUSES })
  status!: string;

  @ApiProperty({ description: 'Unix ms' })
  createdAt!: number;

  @ApiProperty({ description: 'Unix ms' })
  updatedAt!: number;

  @ApiProperty({ format: 'uuid' })
  createdBy!: string;

  @ApiProperty({ format: 'uuid' })
  updatedBy!: string;

  @ApiPropertyOptional({ type: UserRelationDto, nullable: true })
  user!: UserRelationDto | null;
}