import {
  IsIn,
  IsNumber,
  IsOptional,
  IsString,
  Max,
  MaxLength,
  Min,
  MinLength,
} from 'class-validator';
import { Type } from 'class-transformer';

const SALES_GOAL_TYPES = [
  'sales',
  'customer',
  'revenue',
  'deal',
  'activity',
  'quality',
] as const;

const SALES_GOAL_STATUSES = [
  'in_progress',
  'completed',
  'needs_attention',
] as const;

export class CreateSalesGoalDto {
  @IsString()
  @MinLength(2)
  @MaxLength(200)
  title!: string;

  @IsString()
  periodStart!: string;

  @IsString()
  periodEnd!: string;

  @Type(() => Number)
  @IsNumber()
  @Min(0)
  targetAmount!: number;

  @IsOptional()
  @IsString()
  @IsIn(SALES_GOAL_TYPES)
  type?: string;

  @IsOptional()
  @Type(() => Number)
  @IsNumber()
  @Min(0)
  forecastAmount?: number | null;

  @IsOptional()
  @Type(() => Number)
  @IsNumber()
  @Min(0)
  @Max(100)
  probability?: number | null;

  @IsOptional()
  @IsString()
  @MaxLength(8)
  currency?: string;

  @IsOptional()
  @IsString()
  @MaxLength(2000)
  notes?: string;

  @IsOptional()
  @IsString()
  userId?: string | null;
}

export class UpdateSalesGoalDto {
  @IsOptional()
  @IsString()
  @MinLength(2)
  @MaxLength(200)
  title?: string;

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

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

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

  @IsOptional()
  @IsString()
  @IsIn(SALES_GOAL_TYPES)
  type?: string;

  @IsOptional()
  @Type(() => Number)
  @IsNumber()
  @Min(0)
  forecastAmount?: number | null;

  @IsOptional()
  @Type(() => Number)
  @IsNumber()
  @Min(0)
  @Max(100)
  probability?: number | null;

  @IsOptional()
  @IsString()
  @MaxLength(8)
  currency?: string;

  @IsOptional()
  @IsString()
  @MaxLength(2000)
  notes?: string | null;

  @IsOptional()
  @IsString()
  userId?: string | null;
}

export class ForecastQueryDto {
  @IsOptional()
  @IsString()
  from?: string;

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

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

export class ListGoalsQueryDto {
  @IsOptional()
  @IsString()
  from?: string;

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

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

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

  @IsOptional()
  @IsString()
  @IsIn(SALES_GOAL_STATUSES)
  status?: string;

  @IsOptional()
  @IsString()
  @IsIn(SALES_GOAL_TYPES)
  type?: string;
}