import { IsOptional, IsDateString, IsEnum } from 'class-validator';

export enum DashboardPeriod {
  DAY = 'day',
  WEEK = 'week',
  MONTH = 'month',
  YEAR = 'year',
}

export class DashboardQueryDto {
  @IsOptional()
  @IsDateString()
  startDate?: string;

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

  @IsOptional()
  @IsEnum(DashboardPeriod)
  period?: DashboardPeriod;
}

export interface DashboardMetrics {
  users: {
    total: number;
    mau: number;
    dau: number;
    newThisPeriod: number;
  };
  stores: {
    total: number;
    activeThisPeriod: number;
  };
  videos: {
    total: number;
    processedThisPeriod: number;
    averageProcessingTime: number;
  };
  revenue: {
    total: number;
    thisPeriod: number;
    byPackage: { packageId: string; name: string; amount: number }[];
  };
  cogs: {
    total: number;
    thisPeriod: number;
    byProvider: { providerId: string; name: string; cost: number }[];
  };
  margin: {
    gross: number;
    percentage: number;
  };
  credits: {
    purchased: number;
    used: number;
    gifted: number;
  };
}

export interface RevenueSeriesPoint {
  date: string;
  revenue: number;
  cogs: number;
  margin: number;
}