refactor progress

packages/date_utils/src/DateComparison.tsx

@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import {MS_PER_DAY, MS_PER_HOUR, MS_PER_MINUTE, MS_PER_SECOND} from '@fluxer/date_utils/src/DateConstants';
+import {parseDate} from '@fluxer/date_utils/src/DateParsing';
+import type {DateInput} from '@fluxer/date_utils/src/DateTypes';
+
+export function isSameDay(date1: DateInput, date2?: DateInput): boolean {
+	const d1 = parseDate(date1);
+	const d2 = date2 != null ? parseDate(date2) : new Date();
+	return d1.getFullYear() === d2.getFullYear() && d1.getMonth() === d2.getMonth() && d1.getDate() === d2.getDate();
+}
+
+export function isYesterday(date: DateInput, now?: Date): boolean {
+	const nowDate = now ?? new Date();
+	const yesterday = new Date(nowDate);
+	yesterday.setDate(yesterday.getDate() - 1);
+	return isSameDay(date, yesterday);
+}
+
+export function getDaysBetween(date1: DateInput, date2: DateInput): number {
+	const d1 = parseDate(date1);
+	const d2 = parseDate(date2);
+	const d1Start = new Date(d1.getFullYear(), d1.getMonth(), d1.getDate());
+	const d2Start = new Date(d2.getFullYear(), d2.getMonth(), d2.getDate());
+	return Math.round((d1Start.getTime() - d2Start.getTime()) / MS_PER_DAY);
+}
+
+export function getDaysDiff(date1: DateInput, date2: DateInput): number {
+	return Math.floor((parseDate(date1).getTime() - parseDate(date2).getTime()) / MS_PER_DAY);
+}
+
+export function getHoursDiff(date1: DateInput, date2: DateInput): number {
+	return Math.floor((parseDate(date1).getTime() - parseDate(date2).getTime()) / MS_PER_HOUR);
+}
+
+export function getMinutesDiff(date1: DateInput, date2: DateInput): number {
+	return Math.floor((parseDate(date1).getTime() - parseDate(date2).getTime()) / MS_PER_MINUTE);
+}
+
+export function getSecondsDiff(date1: DateInput, date2: DateInput): number {
+	return Math.floor((parseDate(date1).getTime() - parseDate(date2).getTime()) / MS_PER_SECOND);
+}