import { prisma } from "@/lib/prisma";
import { TRIP_LEADER_MIN_TRIPS } from "@/lib/trust";

export type OrganizerTrust = {
  isVerified: boolean;
  tripsCreated: number;
  avgRating: number | null;
  reviewCount: number;
  isTripLeader: boolean;
};

export const trustService = {
  async getOrganizerTrust(organizerId: string): Promise<OrganizerTrust> {
    const [user, tripsCreated, reviewAgg] = await Promise.all([
      prisma.user.findUnique({
        where: { id: organizerId },
        select: { isVerified: true },
      }),
      prisma.trip.count({ where: { organizerId } }),
      prisma.tripReview.aggregate({
        where: {
          trip: { organizerId },
        },
        _avg: { rating: true },
        _count: { _all: true },
      }),
    ]);

    const avg = reviewAgg._avg.rating;
    return {
      isVerified: user?.isVerified ?? false,
      tripsCreated,
      avgRating:
        avg != null ? Math.round(Number(avg) * 10) / 10 : null,
      reviewCount: reviewAgg._count._all,
      isTripLeader: tripsCreated >= TRIP_LEADER_MIN_TRIPS,
    };
  },
};