Parking Lot

import { chain } from "icepick";

const slotsStub = [
  {
    slot: 0,
    vehicleNumber: "",
    color: ""
  },
  {
    slot: 1,
    vehicleNumber: "",
    color: ""
  },
  {
    slot: 2,
    vehicleNumber: "",
    color: ""
  },
  {
    slot: 3,
    vehicleNumber: "",
    color: ""
  },
  {
    slot: 4,
    vehicleNumber: "",
    color: ""
  },
  {
    slot: 5,
    vehicleNumber: "",
    color: ""
  }
];

class ParkingLot {
  constructor() {
    this.parkingCapacity = 5;
    this.slots = slotsStub;
  }

  getCurrentParkingCapacity = () => {
    return this.parkingCapacity;
  };

  enterVehicle = (vehicleNumber, color) => {
    if (!vehicleNumber) {
      console.error("Please provide a valid vehicle number");
      return;
    }
    let nextSlot = this.slots.findIndex(obj => obj.vehicleNumber === "");
    console.log("next slot", nextSlot);
    if (nextSlot === -1) {
      console.error("No Slots are available");
      return;
    }
    let updatedSlots = chain(this.slots)
      .setIn([nextSlot, "vehicleNumber"], vehicleNumber)
      .setIn([nextSlot, "color"], color)
      .value();
    this.slots = updatedSlots;
  };

  exitVehicle = vehicleNumber => {
    if (!vehicleNumber) {
      console.error("Please provide a valid vehicle number");
      return;
    }

    let slot = this.slots.findIndex(obj => obj.vehicleNumber === vehicleNumber);
    if (slot === -1) {
      console.error("No vehicle with this number found");
      return;
    }

    let updatedSlots = chain(this.slots)
      .setIn([slot, "vehicleNumber"], "")
      .setIn([slot, "color"], "")
      .value();
    this.slots = updatedSlots;
  };

  getSlotByColor = color => {
    let vehicles = this.slots.filter(obj => obj.color === color);
    if (vehicles && vehicles.length > 0) {
      return vehicles;
    }
    console.error("No Vehicles found with given color");
  };

  getEmptySlots = () => {
    let slots = this.slots.filter(obj => obj.vehicleNumber === "");
    return slots;
  };

  findVehicleSlot = vehicleNumber => {
    let slot = this.slots.filter(obj => obj.vehicleNumber === vehicleNumber);
    if (!slot.length > 0) {
      console.error("No Vehicles found with given number");
      return;
    }
    return slot;
  };
}

const parkingLot = new ParkingLot({ parkingCapacity: 100 });

console.log(parkingLot.getCurrentParkingCapacity());

parkingLot.enterVehicle("KA-1020", "red");
console.log(parkingLot.slots);
parkingLot.enterVehicle("KA-1020", "red");
console.log(parkingLot.slots);
parkingLot.enterVehicle("KA-1020", "red");
console.log(parkingLot.slots);
parkingLot.enterVehicle("KA-1020", "red");
console.log(parkingLot.slots);
parkingLot.enterVehicle("KA-1020", "red");
console.log(parkingLot.slots);
parkingLot.enterVehicle("KA-1020", "red");
console.log(parkingLot.slots);
parkingLot.enterVehicle("KA-1020", "red");
console.log(parkingLot.slots);
parkingLot.exitVehicle("KA-1020", "red");
console.log(parkingLot.slots);

console.log(parkingLot.vehicles);
console.log(parkingLot.getSlotByColor("yellow"));

console.log(parkingLot.getEmptySlots());
console.log(parkingLot.findVehicleSlot("KA-1020"));