Add project time settings command and related files

src/document/project-time-settings.ts

@@ -0,0 +1,48 @@
+export const HOURS_PER_DAY = 24 as const;
+export const DEFAULT_PROJECT_DAY_LENGTH_MINUTES = 24 as const;
+export const DEFAULT_PROJECT_START_TIME_OF_DAY_HOURS = 9 as const;
+
+export interface ProjectTimeSettings {
+  startTimeOfDayHours: number;
+  dayLengthMinutes: number;
+}
+
+export function normalizeTimeOfDayHours(hours: number): number {
+  const wrappedHours = hours % HOURS_PER_DAY;
+  return wrappedHours < 0 ? wrappedHours + HOURS_PER_DAY : wrappedHours;
+}
+
+export function formatTimeOfDayHours(hours: number): string {
+  const normalizedHours = normalizeTimeOfDayHours(hours);
+  const totalMinutes = Math.round(normalizedHours * 60) % (HOURS_PER_DAY * 60);
+  const wholeHours = Math.floor(totalMinutes / 60);
+  const minutes = totalMinutes % 60;
+
+  return `${String(wholeHours).padStart(2, "0")}:${String(minutes).padStart(2, "0")}`;
+}
+
+export function createDefaultProjectTimeSettings(): ProjectTimeSettings {
+  return {
+    startTimeOfDayHours: DEFAULT_PROJECT_START_TIME_OF_DAY_HOURS,
+    dayLengthMinutes: DEFAULT_PROJECT_DAY_LENGTH_MINUTES
+  };
+}
+
+export function cloneProjectTimeSettings(
+  settings: ProjectTimeSettings
+): ProjectTimeSettings {
+  return {
+    startTimeOfDayHours: settings.startTimeOfDayHours,
+    dayLengthMinutes: settings.dayLengthMinutes
+  };
+}
+
+export function areProjectTimeSettingsEqual(
+  left: ProjectTimeSettings,
+  right: ProjectTimeSettings
+): boolean {
+  return (
+    left.startTimeOfDayHours === right.startTimeOfDayHours &&
+    left.dayLengthMinutes === right.dayLengthMinutes
+  );
+}