import { Type } from 'class-transformer';
import {
  Allow,
  IsArray,
  IsBoolean,
  IsDateString,
  IsIn,
  IsInt,
  IsNumber,
  IsObject,
  IsOptional,
  IsString,
  Max,
  MaxLength,
  Min,
  MinLength,
  ValidateIf,
  ValidateNested,
} from 'class-validator';

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

export class CreatePipelineStageDto {
  @IsString()
  @MinLength(1)
  @MaxLength(80)
  name!: string;
}

export class UpdatePipelineStageDto {
  @IsOptional()
  @IsString()
  @MinLength(1)
  @MaxLength(80)
  name?: string;
}

export class ReorderPipelineStagesDto {
  @IsArray()
  @IsString({ each: true })
  stageIds!: string[];
}

export class DealLineItemInputDto {
  @IsOptional()
  @ValidateIf((_, v) => v !== '' && v != null)
  @IsString()
  productId?: string | null;

  @IsString()
  @MinLength(1)
  @MaxLength(200)
  name!: string;

  @Type(() => Number)
  @IsNumber()
  @Min(0.01)
  quantity!: number;

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

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

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

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

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

  @IsOptional()
  @ValidateIf((_, v) => v !== '' && v != null)
  @Type(() => Number)
  @IsNumber()
  @Min(0)
  amount?: number | null;

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

  @IsOptional()
  @IsString()
  @MaxLength(120)
  source?: string;

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

  @IsOptional()
  @IsArray()
  @IsString({ each: true })
  tags?: string[];

  @IsOptional()
  @IsBoolean()
  isStale?: boolean;

  @IsOptional()
  @IsBoolean()
  isRotten?: boolean;

  @IsOptional()
  @ValidateIf((_, v) => v !== '' && v != null)
  @IsString()
  @MaxLength(80)
  code?: string | null;

  @IsOptional()
  @ValidateIf((_, v) => v !== '' && v != null)
  @Type(() => Number)
  @IsInt()
  @Min(0)
  @Max(100)
  probability?: number | null;

  @IsOptional()
  @ValidateIf((_, v) => v !== '' && v != null)
  @IsString()
  @MaxLength(200)
  sourceDetail?: string | null;

  @IsOptional()
  @ValidateIf((_, v) => v !== '' && v != null)
  @IsString()
  @MaxLength(200)
  referrer?: string | null;

  @IsOptional()
  @ValidateIf((_, v) => v !== '' && v != null)
  @IsString()
  @MaxLength(2000)
  lostNote?: string | null;

  @IsOptional()
  @ValidateIf((_, v) => v !== '' && v != null)
  @IsDateString()
  closedAt?: string | null;

  @IsOptional()
  @ValidateIf((_, v) => v !== '' && v != null)
  @IsDateString()
  expectedCloseAt?: string | null;

  @IsOptional()
  @ValidateIf((_, v) => v !== '' && v != null)
  @IsString()
  personId?: string | null;

  @IsOptional()
  @ValidateIf((_, v) => v !== '' && v != null)
  @IsString()
  companyId?: string | null;

  @IsOptional()
  @ValidateIf((_, v) => v !== '' && v != null)
  @IsString()
  ownerId?: string | null;

  @IsOptional()
  @IsArray()
  @IsString({ each: true })
  assigneeIds?: string[];

  @IsOptional()
  @IsObject()
  customFields?: Record<string, unknown>;

  @IsOptional()
  @IsArray()
  @ValidateNested({ each: true })
  @Type(() => DealLineItemInputDto)
  lineItems?: DealLineItemInputDto[];

  @IsOptional()
  @ValidateIf((_, v) => v !== '' && v != null)
  @IsString()
  @MaxLength(400)
  lostReason?: string | null;
}

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

  @IsOptional()
  @ValidateIf((_, v) => v !== '' && v != null)
  @Type(() => Number)
  @IsNumber()
  @Min(0)
  amount?: number | null;

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

  @IsOptional()
  @IsString()
  @MaxLength(120)
  source?: string;

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

  @IsOptional()
  @IsArray()
  @IsString({ each: true })
  tags?: string[];

  @IsOptional()
  @IsBoolean()
  isStale?: boolean;

  @IsOptional()
  @IsBoolean()
  isRotten?: boolean;

  @IsOptional()
  @IsString()
  @MaxLength(400)
  lostReason?: string | null;

  @IsOptional()
  @ValidateIf((_, v) => v !== '' && v != null)
  @IsString()
  @MaxLength(80)
  code?: string | null;

  @IsOptional()
  @ValidateIf((_, v) => v !== '' && v != null)
  @Type(() => Number)
  @IsInt()
  @Min(0)
  @Max(100)
  probability?: number | null;

  @IsOptional()
  @ValidateIf((_, v) => v !== '' && v != null)
  @IsString()
  @MaxLength(200)
  sourceDetail?: string | null;

  @IsOptional()
  @ValidateIf((_, v) => v !== '' && v != null)
  @IsString()
  @MaxLength(200)
  referrer?: string | null;

  @IsOptional()
  @ValidateIf((_, v) => v !== '' && v != null)
  @IsString()
  @MaxLength(2000)
  lostNote?: string | null;

  @IsOptional()
  @ValidateIf((_, v) => v !== '' && v != null)
  @IsDateString()
  closedAt?: string | null;

  @IsOptional()
  @ValidateIf((_, v) => v !== '' && v != null)
  @IsDateString()
  expectedCloseAt?: string | null;

  @IsOptional()
  @ValidateIf((_, v) => v !== '' && v != null)
  @IsString()
  personId?: string | null;

  @IsOptional()
  @ValidateIf((_, v) => v !== '' && v != null)
  @IsString()
  companyId?: string | null;

  @IsOptional()
  @ValidateIf((_, v) => v !== '' && v != null)
  @IsString()
  ownerId?: string | null;

  @IsOptional()
  @IsArray()
  @IsString({ each: true })
  assigneeIds?: string[];

  @IsOptional()
  @IsObject()
  customFields?: Record<string, unknown>;

  @IsOptional()
  @IsArray()
  @ValidateNested({ each: true })
  @Type(() => DealLineItemInputDto)
  lineItems?: DealLineItemInputDto[];
}

/** تکه‌های JSON از ایمپورت مرورگرگرا */
export class ImportDealRowsDto {
  @IsArray()
  @Allow()
  rows!: Array<Record<string, string>>;

  @Type(() => Number)
  @IsInt()
  @Min(0)
  offset!: number;

  @Type(() => Number)
  @IsInt()
  @Min(0)
  total!: number;

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

export class MoveDealDto {
  @IsString()
  stageId!: string;

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

export class MergePipelineDto {
  @IsString()
  @MinLength(1)
  targetPipelineId!: string;

  @IsObject()
  stageMap!: Record<string, string>;

  @IsOptional()
  @IsString()
  @IsIn(['retarget_all'])
  leadFormMode?: 'retarget_all';
}