feat: migrate backend to cosmiconfig

backend/backend/config/default/tools/semester-acronym.js

@@ -0,0 +1,34 @@
+// @ts-check
+/**
+ * Generates a range of numbers that represent consecutive calendar months
+ *
+ * @param {number} startMonth The month to start with (inclusive)
+ * @param {number} endMonth The month to end with (inclusive)
+ * @returns {number[]}
+ */
+export function yearSlice(startMonth, endMonth) {
+  let months = [...Array.from({length: 13}).keys()].slice(1);
+  months = [...months, ...months];
+  if (!months.includes(startMonth) || !months.includes(endMonth)) {
+    throw new Error(`Given months not part of a year! Check ${startMonth} or ${endMonth}!`);
+  }
+
+  const startIndex = months.indexOf(startMonth);
+  const endIndex =
+    months.indexOf(endMonth) <= startIndex ? months.lastIndexOf(endMonth) : months.indexOf(endMonth);
+
+  return months.slice(startIndex, endIndex + 1);
+}
+
+export const sommerRange = yearSlice(3, 8);
+export const winterRange = yearSlice(9, 2);
+export const month = new Date().getMonth();
+export const year = new Date().getFullYear();
+export const winterYearOffset = month < winterRange[0] ? -1 : 0;
+export const sommerYear = year + (month <= winterRange[winterRange.length] ? -1 : 0);
+export const winterYear = `${year + winterYearOffset}/${(year + 1 + winterYearOffset).toString().slice(-2)}`;
+
+export const wsAcronymShort = `WS ${winterYear}`;
+export const ssAcronymShort = `SS ${sommerYear}`;
+export const wsAcronymLong = `WiSe ${winterYear}`;
+export const ssAcronymLong = `SoSe ${sommerYear}`;