import { TaskStatus, TaskPriority } from "@prisma/client";
import {
  IsUUID,
  IsEnum,
  IsOptional,
  IsInt,
  Min,
  Max,
  IsDateString,
} from "class-validator";
import { Type } from "class-transformer";

/**
 * DTO for querying tasks with filters and pagination
 */
export class QueryTasksDto {
  @IsOptional()
  @IsUUID("4", { message: "workspaceId must be a valid UUID" })
  workspaceId?: string;

  @IsOptional()
  @IsEnum(TaskStatus, { message: "status must be a valid TaskStatus" })
  status?: TaskStatus;

  @IsOptional()
  @IsEnum(TaskPriority, { message: "priority must be a valid TaskPriority" })
  priority?: TaskPriority;

  @IsOptional()
  @IsUUID("4", { message: "assigneeId must be a valid UUID" })
  assigneeId?: string;

  @IsOptional()
  @IsUUID("4", { message: "projectId must be a valid UUID" })
  projectId?: string;

  @IsOptional()
  @IsUUID("4", { message: "parentId must be a valid UUID" })
  parentId?: string;

  @IsOptional()
  @IsDateString({}, { message: "dueDateFrom must be a valid ISO 8601 date string" })
  dueDateFrom?: Date;

  @IsOptional()
  @IsDateString({}, { message: "dueDateTo must be a valid ISO 8601 date string" })
  dueDateTo?: Date;

  @IsOptional()
  @Type(() => Number)
  @IsInt({ message: "page must be an integer" })
  @Min(1, { message: "page must be at least 1" })
  page?: number;

  @IsOptional()
  @Type(() => Number)
  @IsInt({ message: "limit must be an integer" })
  @Min(1, { message: "limit must be at least 1" })
  @Max(100, { message: "limit must not exceed 100" })
  limit?: number;
}