"use client";
import { getDateFromStringOrThrow } from "@/models/local/timeUtils";
import { getMonthsBetweenDates } from "./calendarMonthUtils";
import { CalendarMonth } from "./CalendarMonth";
import { useLocalCourseSettingsQuery } from "@/hooks/localCourse/localCoursesHooks";
import { useMemo } from "react";
import CalendarItemsContextProvider from "../context/CalendarItemsContextProvider";

export default function CourseCalendar() {
  const { data: settings } = useLocalCourseSettingsQuery();

  const startDateTime = useMemo(
    () => getDateFromStringOrThrow(settings.startDate, "course start date"),
    [settings.startDate]
  );
  const endDateTime = useMemo(
    () => getDateFromStringOrThrow(settings.endDate, "course end date"),
    [settings.endDate]
  );
  const months = useMemo(
    () => getMonthsBetweenDates(startDateTime, endDateTime),
    [endDateTime, startDateTime]
  );

  return (
    <div
      className="
        min-h-0
        flex-grow
        border-4
        border-gray-900
        rounded-lg
        bg-slate-950
        sm:p-1
      "
    >
      <div className="h-full overflow-y-scroll sm:pe-1">
        <CalendarItemsContextProvider>
          {months.map((month) => (
            <CalendarMonth key={month.month + "" + month.year} month={month} />
          ))}
        </CalendarItemsContextProvider>
      </div>
    </div>
  );
}