import { Router } from "express";
import { aparmentsApi, searchCurrentApartmentApi } from "../consts.js";
import { logger } from "../utils/logger.js";
import { IApartment } from "../types/apartment.js";

const router = Router();

async function getAllApartments(
  page: number,
  accessToken: string,
  apartments: IApartment[]
) {
  const response = await fetch(`${aparmentsApi}&page=${page}&per_page=200`, {
    headers: {
      Authorization: accessToken,
    },
  });

  const result = await response.json();

  if (result?.code && result?.code === "INVALID_TOKEN") {
    throw new Error("INVALID_TOKEN");
  }

  const updatedApartment = apartments.concat([...result.data]);
  const isMoreRecords = result.info.more_records;

  if (!isMoreRecords) {
    return updatedApartment;
  }

  return await getAllApartments(page + 1, accessToken, updatedApartment);
}

function filterApartments(
  apartments: IApartment[],
  roveHome?: string[],
  apartmentType?: string[],
  costBetween?: string[],
  totalAreaBetween?: string[],
  floorBetween?: string[],
  views?: string[]
) {
  const filteredApartments = apartments
    .filter((apart) => {
      // Rove home filter
      if (!roveHome || roveHome.length === 0) {
        return true;
      }

      if (roveHome.some((rove) => rove === apart.Project_Name)) {
        return true;
      }

      return false;
    })
    .filter((apart) => {
      // Apartment type filter
      if (!apartmentType || apartmentType.length === 0) {
        return true;
      }

      if (apartmentType.some((rove) => rove === apart.Unit_Type)) {
        return true;
      }

      return false;
    })
    .filter((apart) => {
      // Cost between filter еще не доступен тк нет цен

      if (!costBetween || costBetween.length === 0) {
        return true;
      }

      const leftCost = Number(costBetween[0]);
      const rightCost = Number(costBetween[1]);

      return true;

      // if (costBetween.some((rove) => rove === apart.Unit_Type)) {
      //   return true;
      // }

      // return false;
    })
    .filter((apart) => {
      // Total area filter
      if (!totalAreaBetween || totalAreaBetween.length === 0) {
        return true;
      }

      const leftArea = Number(totalAreaBetween[0]);
      const rightArea = Number(totalAreaBetween[1]);

      if (
        (leftArea <= apart.Total_Area_Sqft &&
          rightArea >= apart.Total_Area_Sqft) ||
        (leftArea >= apart.Total_Area_Sqft &&
          rightArea <= apart.Total_Area_Sqft)
      ) {
        return true;
      }

      return false;
    })
    .filter((apart) => {
      // Views filter
      if (!views || views.length === 0) {
        return true;
      }

      //view "Canal" "Amenities"
      // Canal / Amenities

      // разделение по / с пробелом и без
      const apartViews = apart.Unit_View.split(" / ").join("/").split("/");
      for (let i = 0; i < apartViews.length; i++) {
        // Удаление Corner-
        const withoutCorner =
          apartViews[i].split("-").length > 1
            ? apartViews[i].split("-")[1]
            : apartViews[i];

        //удаление View
        const withoutView = withoutCorner.replace(" View", "");

        if (views.some((view) => view === withoutView)) {
          return true;
        }
      }

      return false;
    })
    .filter((apart) => {
      // Floor filter

      if (!floorBetween || floorBetween.length === 0) {
        return true;
      }

      const leftFloor = Number(floorBetween[0]);
      const rightFloor = Number(floorBetween[1]);

      if (
        (leftFloor <= apart.Floor && rightFloor >= apart.Floor) ||
        (leftFloor >= apart.Floor && rightFloor <= apart.Floor)
      ) {
        return true;
      }

      return false;
    });

  return filteredApartments;
}

router.get("/", async (req, res) => {
  const accessToken = req?.headers?.authorization;
  const {
    per_page = 1000,
    page = 1,
    rove_home = "",
    apartment_type = "",
    cost_between = "",
    total_area_between = "",
    floor_between = "",
    views = "",
    sort_by = "",
  } = req.query;

  try {
    const roveHomeFilter = (rove_home as string)
      .split(",")
      .filter((rove) => rove !== "");
    const apartmentTypeFilter = (apartment_type as string)
      .split(",")
      .filter((rove) => rove !== "");
    const costBetweenFilter = (cost_between as string)
      .split(",")
      .filter((cost) => cost !== "");
    const totalAreaBetween = (total_area_between as string)
      .split(",")
      .filter((area) => area !== "");
    const viewsFilter = (views as string)
      .split(",")
      .filter((view) => view !== "");
    const floorBetweenFilter = (floor_between as string)
      .split(",")
      .filter((floor) => floor !== "");

    if (!accessToken)
      return res
        .status(401)
        .json({ message: "Отсутсвует access token", code: 401 });

    try {
      const allApartments = await getAllApartments(1, accessToken, []);
      const filteredApartments = filterApartments(
        allApartments,
        roveHomeFilter,
        apartmentTypeFilter,
        costBetweenFilter,
        totalAreaBetween,
        floorBetweenFilter,
        viewsFilter
      );

      const sortedApartments = [...filteredApartments].sort((a, b) => {
        if (sort_by === "asc_price") {
          return 1;
        }

        if (sort_by === "decr_price") {
          return 1;
        }

        if (sort_by === "asc_sqr") {
          return a.Total_Area_Sqft - b.Total_Area_Sqft;
        }

        if (sort_by === "asc_floor") {
          return a.Floor - b.Floor;
        }

        return 1;
      });

      const slicedApartments = sortedApartments.slice(
        ((page as number) - 1) * (per_page as number),
        (per_page as number) * (page as number)
      );

      res.status(200).json({
        message: "ok",
        apartments: slicedApartments,
        code: 200,
      });

      return;
    } catch (error) {
      if (
        (error as Error).message === "invalid oauth token" ||
        (error as Error).message === "INVALID_TOKEN"
      ) {
        console.log("error", error);
        logger.error(error);

        return res
          .status(401)
          .json({ message: "Неправильный токен или токен устарел", code: 401 });
      }

      console.log("error", error);
      logger.error(error);

      return res.status(500).json({ message: "Server Error", code: 500 });
    }
  } catch (error) {
    logger.error(error);
    console.log("error", error);
  }
});

const apartmentsRoute = router;

export default apartmentsRoute;