// import { Request } from "express";
// import { prisma } from "../../lib/prisma";

import { prisma } from "../../lib/prisma";

type Range = "7d" | "30d" | "all";

const get_seller_stats_fromDb = async (shopAccountId: string, range: Range) => {
  let createdAtFilter: any = {};

  if (range !== "all") {
    const days = range === "7d" ? 7 : 30;
    const from = new Date();
    from.setDate(from.getDate() - days);

    createdAtFilter = { gte: from };
  }

  const baseWhere: any = {
    shopAccountId,
    ...(range !== "all" && { createdAt: createdAtFilter }),
  };

  const [
    totalOrders,
    completedOrders,
    pendingOrders,
    rejectedOrders,
    revenueResult,
    last7DaysRejected,
    ordersForChart,
  ] = await Promise.all([
    prisma.order.count({ where: baseWhere }),

    prisma.order.count({
      where: { ...baseWhere, status: "DELIVERED" },
    }),

    prisma.order.count({
      where: {
        ...baseWhere,
        status: { in: ["INITIATED", "CONFIRMED", "ONGOING"] },
      },
    }),

    prisma.order.count({
      where: { ...baseWhere, status: "CANCELLED" },
    }),

    prisma.order.aggregate({
      where: { ...baseWhere, status: "DELIVERED" },
      _sum: { productPrice: true },
    }),

    prisma.order.count({
      where: {
        shopAccountId,
        status: "CANCELLED",
        createdAt: {
          gte: new Date(Date.now() - 7 * 24 * 60 * 60 * 1000),
        },
      },
    }),

    range !== "all"
      ? prisma.order.findMany({
          where: {
            shopAccountId,
            status: "DELIVERED",
            createdAt: createdAtFilter,
          },
          select: {
            productPrice: true,
            createdAt: true,
          },
        })
      : Promise.resolve([]),
  ]);

  const totalRevenue = revenueResult._sum.productPrice || 0;

  const avgOrderValue =
    completedOrders > 0 ? totalRevenue / completedOrders : 0;

  const dailyMap: Record<string, number> = {};

  for (const o of ordersForChart) {
    const date = o.createdAt.toISOString().split("T")[0];
    if (!dailyMap[date]) dailyMap[date] = 0;
    dailyMap[date] += o.productPrice;
  }

  const dailyRevenue = Object.entries(dailyMap).map(([date, revenue]) => ({
    date,
    revenue,
  }));

  return {
    totalOrders,
    completedOrders,
    pendingOrders,
    rejectedOrders,
    totalRevenue,
    avgOrderValue,
    last7DaysRejected,
    dailyRevenue,
  };
};

// const get_all_statictics_from_db = async (req: Request) => {
//   // define your own login here
//   const result = await prisma.statictics.findMany();
//   return result;
// };

// const get_single_statictics_from_db = async (req: Request) => {
//   // define your own login here
//   const { id } = req.params;
//   const result = await prisma.statictics.findUnique({where:{id}});
//   return result;
// };

// const create_statictics_into_db = async (req: Request) => {
//   // define your own login here
//   const result = await prisma.statictics.create({data:req.body});
//   return result;
// };

// const update_statictics_into_db = async (req: Request) => {
//   // define your own login here
//   const { id } = req.params;
//   const result = await prisma.statictics.update({where:{id},data:req.body});
//   return result;
// };

// const delete_statictics_from_db = async (req: Request) => {
//   // define your own login here
//   const { id } = req.params;
//   const result = await prisma.statictics.delete({where:{id}});
//   return result;
// };

export const statictics_service = {
  get_seller_stats_fromDb,

  // get_all_statictics_from_db,
  // get_single_statictics_from_db,
  // create_statictics_into_db,
  // update_statictics_into_db,
  // delete_statictics_from_db,
};