import { Type } from 'class-transformer';
import {
  ArrayMaxSize,
  IsArray,
  IsBoolean,
  IsDateString,
  IsIn,
  IsInt,
  IsOptional,
  IsString,
  Max,
  MaxLength,
  Min,
  MinLength,
} from 'class-validator';

const STATUSES = ['pending', 'confirmed', 'canceled', 'done'] as const;

export class CreateReservationServiceDto {
  @IsString()
  @MinLength(2)
  @MaxLength(120)
  name!: string;

  @IsOptional()
  @IsString()
  @MaxLength(500)
  description?: string;

  @Type(() => Number)
  @IsInt()
  @Min(5)
  @Max(480)
  durationMinutes!: number;

  @IsOptional()
  @IsArray()
  @ArrayMaxSize(7)
  @IsInt({ each: true })
  @Min(0, { each: true })
  @Max(6, { each: true })
  workDays?: number[];

  @IsOptional()
  @Type(() => Number)
  @IsInt()
  @Min(0)
  @Max(23)
  dayStartHour?: number;

  @IsOptional()
  @Type(() => Number)
  @IsInt()
  @Min(1)
  @Max(24)
  dayEndHour?: number;

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

export class UpdateReservationServiceDto {
  @IsOptional()
  @IsString()
  @MinLength(2)
  @MaxLength(120)
  name?: string;

  @IsOptional()
  @IsString()
  @MaxLength(500)
  description?: string;

  @IsOptional()
  @Type(() => Number)
  @IsInt()
  @Min(5)
  @Max(480)
  durationMinutes?: number;

  @IsOptional()
  @IsArray()
  @ArrayMaxSize(7)
  @IsInt({ each: true })
  @Min(0, { each: true })
  @Max(6, { each: true })
  workDays?: number[];

  @IsOptional()
  @Type(() => Number)
  @IsInt()
  @Min(0)
  @Max(23)
  dayStartHour?: number;

  @IsOptional()
  @Type(() => Number)
  @IsInt()
  @Min(1)
  @Max(24)
  dayEndHour?: number;

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

export class CreateReservationAppointmentDto {
  @IsString()
  serviceId!: string;

  @IsString()
  personId!: string;

  @IsOptional()
  @IsString()
  assigneeId?: string | null;

  @IsDateString()
  startsAt!: string;

  @IsOptional()
  @IsIn(STATUSES)
  status?: (typeof STATUSES)[number];

  @IsOptional()
  @IsString()
  @MaxLength(1000)
  notes?: string | null;
}

export class UpdateReservationAppointmentDto {
  @IsOptional()
  @IsString()
  serviceId?: string;

  @IsOptional()
  @IsString()
  personId?: string;

  @IsOptional()
  @IsString()
  assigneeId?: string | null;

  @IsOptional()
  @IsDateString()
  startsAt?: string;

  @IsOptional()
  @IsIn(STATUSES)
  status?: (typeof STATUSES)[number];

  @IsOptional()
  @IsString()
  @MaxLength(1000)
  notes?: string | null;
}

export class ListReservationsQueryDto {
  @IsOptional()
  @IsIn(STATUSES)
  status?: (typeof STATUSES)[number];

  @IsOptional()
  @IsDateString()
  from?: string;

  @IsOptional()
  @IsDateString()
  to?: string;

  @IsOptional()
  @IsString()
  serviceId?: string;

  @IsOptional()
  @IsString()
  personId?: string;

  @IsOptional()
  @Type(() => Number)
  @IsInt()
  @Min(1)
  page?: number = 1;

  @IsOptional()
  @Type(() => Number)
  @IsInt()
  @Min(1)
  @Max(100)
  limit?: number = 30;
}

export class SlotsQueryDto {
  @IsString()
  serviceId!: string;

  @IsDateString()
  date!: string;

  @IsOptional()
  @IsString()
  assigneeId?: string;
}