import { Types } from "mongoose";

import { ICart } from "./models/Abstraction/ICart";
import { ICartShipmentItem } from "./models/Abstraction/ICartShipmentItem";
import { CartModel } from "./models/cart.model";
import { CartShipmentItemModel } from "./models/cartShipmentItem.model";
import { BaseRepository } from "../../common/base/repository";

class CartRepository extends BaseRepository<ICart> {
  constructor() {
    super(CartModel);
  }

  async getCartWithPopulate(userId: string) {
    return this.model
      .findOne({ user: userId })
      .populate("user")
      .populate({
        path: "items.product",
      })
      .populate({
        path: "items.variant",
        populate: ["color", "size", "meterage", "warranty", "shop"],
      });
  }

  // async getCartWithAggregate(userId: string) {
  //   return this.model.aggregate([
  //     {
  //       $match: {
  //         user: new Types.ObjectId(userId),
  //       },
  //     },
  //     {
  //       $lookup: {
  //         from: "users",
  //         localField: "user",
  //         foreignField: "_id",
  //         as: "user",
  //       },
  //     },
  //     {
  //       $unwind: "$user",
  //     },
  //     {
  //       $unwind: "$items",
  //     },
  //     {
  //       $lookup: {
  //         from: "products",
  //         localField: "items.product",
  //         foreignField: "_id",
  //         as: "productDetails",
  //       },
  //     },
  //     {
  //       $unwind: "$productDetails",
  //     },
  //     {
  //       $lookup: {
  //         from: "productvariants",
  //         localField: "items.variant",
  //         foreignField: "_id",
  //         as: "variantDetails",
  //       },
  //     },
  //     {
  //       $unwind: "$variantDetails",
  //     },
  //     {
  //       $lookup: {
  //         from: "warranties",
  //         localField: "variantDetails.warranty",
  //         foreignField: "_id",
  //         as: "variantDetails.warranty",
  //       },
  //     },
  //     {
  //       $lookup: {
  //         from: "colors",
  //         localField: "variantDetails.color",
  //         foreignField: "_id",
  //         as: "variantDetails.color",
  //       },
  //     },
  //     {
  //       $lookup: {
  //         from: "sizes",
  //         localField: "variantDetails.size",
  //         foreignField: "_id",
  //         as: "variantDetails.size",
  //       },
  //     },
  //     {
  //       $lookup: {
  //         from: "meterages",
  //         localField: "variantDetails.meterage",
  //         foreignField: "_id",
  //         as: "variantDetails.meterage",
  //       },
  //     },
  //     {
  //       $unwind: {
  //         path: "$variantDetails.warranty",
  //         preserveNullAndEmptyArrays: true,
  //       },
  //     },
  //     {
  //       $unwind: {
  //         path: "$variantDetails.color",
  //         preserveNullAndEmptyArrays: true,
  //       },
  //     },
  //     {
  //       $unwind: {
  //         path: "$variantDetails.size",
  //         preserveNullAndEmptyArrays: true,
  //       },
  //     },
  //     {
  //       $unwind: {
  //         path: "$variantDetails.meterage",
  //         preserveNullAndEmptyArrays: true,
  //       },
  //     },
  //     {
  //       $lookup: {
  //         from: "shops",
  //         localField: "variantDetails.shop",
  //         foreignField: "_id",
  //         as: "variantDetails.shop",
  //       },
  //     },
  //     {
  //       $unwind: "$variantDetails.shop",
  //     },
  //     {
  //       $lookup: {
  //         from: "shipments",
  //         localField: "variantDetails.shop.shipmentMethod",
  //         foreignField: "_id",
  //         as: "variantDetails.shipmentMethod",
  //       },
  //     },
  //     {
  //       $project: {
  //         productDetails: {
  //           adminComments: 0,
  //           brand: 0,
  //           comments: 0,
  //           createdAt: 0,
  //           updatedAt: 0,
  //           step: 0,
  //           questions: 0,
  //           status: 0,
  //           variants: 0,
  //           __v: 0,
  //         },
  //         variantDetails: {
  //           createdAt: 0,
  //           updatedAt: 0,
  //           // warranty: 0,
  //           __v: 0,
  //         },
  //         user: {
  //           createdAt: 0,
  //           updatedAt: 0,
  //           __v: 0,
  //         },
  //       },
  //     },
  //     {
  //       $group: {
  //         _id: "$_id",
  //         user: { $first: "$user" },
  //         items_count: { $sum: "$items.quantity" }, // Sum all quantities in the items array
  //         payable_price: {
  //           $sum: {
  //             $multiply: ["$items.quantity", "$variantDetails.price.selling_price"],
  //           },
  //         },
  //         retail_price: {
  //           $sum: {
  //             $multiply: ["$items.quantity", "$variantDetails.price.retailPrice"],
  //           },
  //         },
  //         total_discount: {
  //           $sum: {
  //             $subtract: [
  //               { $multiply: ["$items.quantity", "$variantDetails.price.retailPrice"] },
  //               { $multiply: ["$items.quantity", "$variantDetails.price.selling_price"] },
  //             ],
  //           },
  //         },
  //         coupon_discount: { $first: "$coupon_discount" },
  //         items: {
  //           $push: {
  //             product: "$productDetails",
  //             variant: "$variantDetails",
  //             quantity: "$items.quantity",
  //           },
  //         },
  //       },
  //     },

  //     {
  //       $project: {
  //         _id: 1,
  //         user: 1,
  //         items_count: 1,
  //         payable_price: {
  //           $subtract: ["$payable_price", { $ifNull: ["$coupon_discount", 0] }],
  //         },
  //         retail_price: 1,
  //         total_discount: 1,
  //         coupon_discount: 1,
  //         items: 1,
  //       },
  //     },
  //   ]);
  // }

  async getCartWithAggregate(userId: string) {
    const data = await this.model.aggregate([
      { $match: { user: new Types.ObjectId(userId) } },
      { $lookup: { from: "users", localField: "user", foreignField: "_id", as: "user" } },
      { $unwind: "$user" },
      { $unwind: "$items" },
      { $lookup: { from: "products", localField: "items.product", foreignField: "_id", as: "productDetails" } },
      { $unwind: "$productDetails" },
      { $lookup: { from: "productvariants", localField: "items.variant", foreignField: "_id", as: "variantDetails" } },
      { $unwind: "$variantDetails" },
      { $lookup: { from: "warranties", localField: "variantDetails.warranty", foreignField: "_id", as: "variantDetails.warranty" } },
      { $lookup: { from: "colors", localField: "variantDetails.color", foreignField: "_id", as: "variantDetails.color" } },
      { $lookup: { from: "sizes", localField: "variantDetails.size", foreignField: "_id", as: "variantDetails.size" } },
      { $lookup: { from: "meterages", localField: "variantDetails.meterage", foreignField: "_id", as: "variantDetails.meterage" } },
      { $unwind: { path: "$variantDetails.warranty", preserveNullAndEmptyArrays: true } },
      { $unwind: { path: "$variantDetails.color", preserveNullAndEmptyArrays: true } },
      { $unwind: { path: "$variantDetails.size", preserveNullAndEmptyArrays: true } },
      { $unwind: { path: "$variantDetails.meterage", preserveNullAndEmptyArrays: true } },
      { $lookup: { from: "shops", localField: "variantDetails.shop", foreignField: "_id", as: "variantDetails.shop" } },
      { $unwind: "$variantDetails.shop" },
      {
        $lookup: {
          from: "shipments",
          localField: "variantDetails.shop.shipmentMethod",
          foreignField: "_id",
          as: "variantDetails.shipmentMethod",
        },
      },
      {
        $project: {
          productDetails: {
            adminComments: 0,
            brand: 0,
            comments: 0,
            createdAt: 0,
            updatedAt: 0,
            step: 0,
            questions: 0,
            status: 0,
            variants: 0,
            __v: 0,
          },
          variantDetails: { createdAt: 0, updatedAt: 0, __v: 0 },
          user: { createdAt: 0, updatedAt: 0, __v: 0 },
        },
      },
      {
        $addFields: {
          effectiveRetailPrice: {
            $cond: {
              if: "$variantDetails.isWholeSale",
              then: {
                $let: {
                  vars: {
                    wholesaleMatch: {
                      $arrayElemAt: [
                        {
                          $filter: {
                            input: "$variantDetails.saleFormat.wholeSale",
                            as: "ws",
                            cond: {
                              $and: [{ $lte: ["$$ws.from", "$items.quantity"] }, { $gte: ["$$ws.to", "$items.quantity"] }],
                            },
                          },
                        },
                        0,
                      ],
                    },
                  },
                  in: { $ifNull: ["$$wholesaleMatch.price", "$variantDetails.price.retailPrice"] },
                },
              },
              else: "$variantDetails.price.retailPrice",
            },
          },
        },
      },
      {
        $group: {
          _id: "$_id",
          user: { $first: "$user" },
          items_count: { $sum: "$items.quantity" },
          payable_price: {
            $sum: { $multiply: ["$items.quantity", "$variantDetails.price.selling_price"] },
          },
          retail_price: {
            $sum: { $multiply: ["$items.quantity", "$effectiveRetailPrice"] },
          },
          total_discount: {
            $sum: {
              $subtract: [
                { $multiply: ["$items.quantity", "$variantDetails.price.retailPrice"] },
                { $multiply: ["$items.quantity", "$variantDetails.price.selling_price"] },
              ],
            },
          },
          coupon_discount: { $first: "$coupon_discount" },
          isWholeSale: { $first: "$variantDetails.isWholeSale" },
          items: {
            $push: {
              product: "$productDetails",
              variant: "$variantDetails",
              quantity: "$items.quantity",
            },
          },
        },
      },
      {
        $project: {
          _id: 1,
          user: 1,
          items_count: 1,
          payable_price: { $subtract: ["$payable_price", { $ifNull: ["$coupon_discount", 0] }] },
          retail_price: 1,
          total_discount: 1,
          coupon_discount: 1,
          items: 1,
          isWholeSale: 1,
        },
      },
    ]);
    return data;
  }
}

function createCartRepo(): CartRepository {
  return new CartRepository();
}
//=========================================>
class CartShipItemRepo extends BaseRepository<ICartShipmentItem> {
  constructor() {
    super(CartShipmentItemModel);
  }
  async getCartShipmentItems(cartId: string) {
    return this.model.find({ cart: cartId });
  }
}

function createCartShipItemRepo(): CartShipItemRepo {
  return new CartShipItemRepo();
}

export { createCartRepo, CartRepository, CartShipItemRepo, createCartShipItemRepo };