import { defineStore } from 'pinia';
import { ref } from 'vue';
import { Boat, useBoatStore } from './boat';
import { date } from 'quasar';
import { DateOptions } from 'quasar';
import {
  Timestamp,
  parseTimestamp,
  TimestampArray,
} from '@quasar/quasar-ui-qcalendar';
import { timeStamp } from 'console';

export type StatusTypes = 'tentative' | 'confirmed' | 'pending' | undefined;
export type Reservation = {
  id: number;
  user: string;
  start: Date;
  end: Date;
  resource: Boat;
  reservationDate: Date;
  status?: StatusTypes;
};

export type Timeblock = {
  start: Timestamp;
  end: Timestamp;
};

const sampleBlocks = [
  {
    start: { time: '09:00', hour: 9, minute: 0, hasDay: false, hasTime: true },
    end: { time: '12:00', hour: 12, minute: 0, hasDay: false, hasTime: true },
  },
  {
    start: { time: '12:00', hour: 12, minute: 0, hasDay: false, hasTime: true },
    end: { time: '15:00', hour: 15, minute: 0, hasDay: false, hasTime: true },
  },
  {
    start: { time: '15:00', hour: 15, minute: 0, hasDay: false, hasTime: true },
    end: { time: '18:00', hour: 18, minute: 0, hasDay: false, hasTime: true },
  },
  {
    start: { time: '18:00', hour: 18, minute: 0, hasDay: false, hasTime: true },
    end: { time: '21:00', hour: 21, minute: 0, hasDay: false, hasTime: true },
  },
] as Timeblock[];

function getSampleReservations(): Reservation[] {
  const sampleData = [
    {
      id: 1,
      user: 'John Smith',
      start: '12:00',
      end: '15:00',
      boat: 1,
      status: 'confirmed',
    },
    {
      id: 2,
      user: 'Bob Barker',
      start: '18:00',
      end: '21:00',
      boat: 1,
      status: 'confirmed',
    },
    {
      id: 3,
      user: 'Peter Parker',
      start: '9:00',
      end: '12:00',
      boat: 2,
      status: 'tentative',
    },
    {
      id: 4,
      user: 'Vince McMahon',
      start: '15:00',
      end: '18:00',
      boat: 2,
      status: 'pending',
    },
    {
      id: 5,
      user: 'Heather Graham',
      start: '09:00',
      end: '12:00',
      boat: 3,
      status: 'confirmed',
    },
    {
      id: 6,
      user: 'Lawrence Fishburne',
      start: '18:00',
      end: '21:00',
      boat: 3,
    },
  ];
  const boatStore = useBoatStore();
  const now = new Date();
  const splitTime = (x: string): string[] => {
    return x.split(':');
  };
  const makeOpts = (x: string[]): DateOptions => {
    return {
      hour: parseInt(x[0]),
      minute: parseInt(x[1]),
      seconds: 0,
      milliseconds: 0,
    };
  };

  return sampleData.map((entry): Reservation => {
    const boat = <Boat>boatStore.boats.find((b) => b.id == entry.boat);
    return {
      id: entry.id,
      user: entry.user,
      start: date.adjustDate(now, makeOpts(splitTime(entry.start))),
      end: date.adjustDate(now, makeOpts(splitTime(entry.end))),
      resource: boat,
      reservationDate: now,
      status: entry.status as StatusTypes,
    };
  });
}

export const useScheduleStore = defineStore('schedule', () => {
  // TODO: Implement functions to dynamically pull this data.
  const reservations = ref<Reservation[]>(getSampleReservations());
  const timeblocks = sampleBlocks;

  const getTimeblocksForDate = (date: Date): Timeblock[] => timeblocks;

  const getBoatReservations = (
    boat: number | string,
    curDate: Date
  ): Reservation[] => {
    return reservations.value.filter((x) => {
      return (
        (x.start.getDate() == curDate.getDate() ||
          x.end.getDate() == curDate.getDate()) &&
        x.resource != undefined &&
        (typeof boat == 'number'
          ? x.resource.id == boat
          : x.resource.name == boat)
      );
    });
  };

  const getConflictingReservations = (
    resource: Boat,
    start: Date,
    end: Date
  ): Reservation[] => {
    const overlapped = reservations.value.filter(
      (entry: Reservation) =>
        entry.resource.id == resource.id &&
        entry.start < end &&
        entry.end > start
    );
    return overlapped;
  };

  const isResourceTimeOverlapped = (
    resource: Boat,
    start: Date,
    end: Date
  ): boolean => {
    return getConflictingReservations(resource, start, end).length > 0;
  };

  const isReservationOverlapped = (res: Reservation): boolean => {
    return isResourceTimeOverlapped(res.resource, res.start, res.end);
  };

  const getNewId = () => {
    // Trivial placeholder
    return Math.max(...reservations.value.map((item) => item.id)) + 1;
  };

  const addOrCreateReservation = (reservation: Reservation) => {
    const index = reservations.value.findIndex(
      (res) => res.id == reservation.id
    );
    index != -1
      ? (reservations.value[index] = reservation)
      : reservations.value.push(reservation);
  };

  return {
    reservations,
    getBoatReservations,
    getConflictingReservations,
    getTimeblocksForDate,
    getNewId,
    addOrCreateReservation,
    isReservationOverlapped,
    isResourceTimeOverlapped,
  };
});