handling iso date strings

nextjs/src/models/local/localCourse.ts

@@ -33,9 +33,32 @@ export enum DayOfWeek {
 }
 export const localCourseYamlUtils = {
   parseSettingYaml: (settingsString: string): LocalCourseSettings => {
-    return parse(settingsString);
+    const settings = parse(settingsString);
+    return lowercaseFirstLetter(settings)
   },
   settingsToYaml: (settings: LocalCourseSettings) => {
     return stringify(settings);
   },
 };
+
+function lowercaseFirstLetter<T>(obj: T): T {
+  if (obj === null || typeof obj !== 'object') 
+    return obj as T;
+
+  if (Array.isArray(obj)) 
+    return obj.map(lowercaseFirstLetter) as unknown as T;
+
+  const result: Record<string, any> = {};
+  Object.keys(obj).forEach((key) => {
+    const value = (obj as Record<string, any>)[key];
+    const newKey = key.charAt(0).toLowerCase() + key.slice(1);
+
+    if (value && typeof value === 'object') {
+      result[newKey] = lowercaseFirstLetter(value);
+    } else {
+      result[newKey] = value;
+    }
+  });
+
+  return result as T;
+}

nextjs/src/models/local/tests/timeUtils.test.ts

@@ -15,4 +15,9 @@ describe("Can properly handle expected date formats", () => {
     const dateObject = getDateFromString(dateString)
     expect(dateObject).not.toBeUndefined()
   })
+  it("can use ISO format", () =>{
+    const dateString = "2024-08-26T00:00:00.0000000"
+    const dateObject = getDateFromString(dateString)
+    expect(dateObject).not.toBeUndefined()
+  })
 })

nextjs/src/models/local/timeUtils.ts

@@ -1,5 +1,7 @@
-
-const _getDateFromAMPM = (datePart: string, timePartWithMeridian: string): Date | undefined => {
+const _getDateFromAMPM = (
+  datePart: string,
+  timePartWithMeridian: string
+): Date | undefined => {
   const [day, month, year] = datePart.split("/").map(Number);
   const [timePart, meridian] = timePartWithMeridian.split(" ");
   const [hours, minutes, seconds] = timePart.split(":").map(Number);
@@ -18,7 +20,10 @@ const _getDateFromAMPM = (datePart: string, timePartWithMeridian: string): Date
   return isNaN(date.getTime()) ? undefined : date;
 };
 
-const _getDateFromMilitary = (datePart: string, timePart: string): Date | undefined => {
+const _getDateFromMilitary = (
+  datePart: string,
+  timePart: string
+): Date | undefined => {
   const [day, month, year] = datePart.split("/").map(Number);
   const [hours, minutes, seconds] = timePart.split(":").map(Number);
 
@@ -26,14 +31,20 @@ const _getDateFromMilitary = (datePart: string, timePart: string): Date | undefi
   return isNaN(date.getTime()) ? undefined : date;
 };
 
+const _getDateFromISO = (value: string): Date | undefined => {
+  const date = new Date(value);
+  return isNaN(date.getTime()) ? undefined : date;
+};
+
 export const getDateFromString = (value: string): Date | undefined => {
-  // Regex for AM/PM format: "M/D/YYYY h:mm:ss AM/PM"
-  const ampmDateRegex = /^\d{1,2}\/\d{1,2}\/\d{4} \d{1,2}:\d{2}:\d{2}\s{1}[APap][Mm]$/;
+  const ampmDateRegex =
+    /^\d{1,2}\/\d{1,2}\/\d{4} \d{1,2}:\d{2}:\d{2}\s{1}[APap][Mm]$/; //"M/D/YYYY h:mm:ss AM/PM"
+  const militaryDateRegex = /^\d{1,2}\/\d{1,2}\/\d{4} \d{1,2}:\d{2}:\d{2}$/; //"MM/DD/YYYY HH:mm:ss"
+  const isoDateRegex = /^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(?:\.\d+)$/; //"2024-08-26T00:00:00.0000000"
 
-  // Regex for military time format: "MM/DD/YYYY HH:mm:ss"
-  const militaryDateRegex = /^\d{1,2}\/\d{1,2}\/\d{4} \d{1,2}:\d{2}:\d{2}$/;
-
-  if (ampmDateRegex.test(value)) {
+  if (isoDateRegex.test(value)) {
+    return _getDateFromISO(value);
+  } else if (ampmDateRegex.test(value)) {
     const [datePart, timePartWithMeridian] = value.split(/[\s\u202F]+/);
     return _getDateFromAMPM(datePart, timePartWithMeridian);
   } else if (militaryDateRegex.test(value)) {
@@ -45,7 +56,11 @@ export const getDateFromString = (value: string): Date | undefined => {
   }
 };
 
-
+export const getDateFromStringOrThrow = (value: string): Date => {
+  const d = getDateFromString(value);
+  if (!d) throw Error(`Invalid date format, ${value}`);
+  return d;
+};
 
 export const verifyDateStringOrUndefined = (
   value: string