✨ Add substitution plan

src/store.js

@@ -2,6 +2,17 @@ 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) => {