import { computed } from "@vue/reactivity";
import { ref } from "vue";

export const timetable = ref([]);
export const substitutions = ref([]);

export const substitutionsForDate = computed(() => {
  const dates = {};
  for (const substitution of substitutions.value) {
    const date = substitution.date;
    if (!dates[date]) dates[date] = [];
    dates[substitution.date].push(substitution);
  }
  return dates;
});

export const parsedTimetable = computed(() => {
  return timetable.value.map((day) => {
    const newDay = [];
    for (const lesson of day) {
      const lessonLength = lesson.length || 1;
      delete lesson.length;
      for (var i = 0; i < lessonLength; i++) newDay.push(lesson);
    }
    return newDay;
  });
});