From 96197e3f37bea8fd06e80c7dce1016fe2ea6fa0a Mon Sep 17 00:00:00 2001
From: Valentyne Stigloher <pixunil@posteo.eu>
Date: Thu, 1 May 2025 12:24:28 +0200
Subject: [PATCH] (refactor) use sha256 instead of md5 for calendar summary

---
 server/calendar.ts      |  2 +-
 src/calendar/helpers.ts | 13 ++++---------
 2 files changed, 5 insertions(+), 10 deletions(-)

diff --git a/server/calendar.ts b/server/calendar.ts
index 592f9b434..445b275d9 100644
--- a/server/calendar.ts
+++ b/server/calendar.ts
@@ -64,7 +64,7 @@ const run = async (config: Config, baseUrl: string): Promise<void> => {
     const prev = fs.existsSync(prevPath) ? JSON.parse(fs.readFileSync(prevPath, 'utf-8')) : {};
 
     const localEvents = (await import(`../locale/${config.locale}/calendar/events.ts`)).default;
-    const current = buildCalendar(localEvents, process.env.NUXT_PUBLIC_BASE_URL!).buildSummary();
+    const current = await buildCalendar(localEvents, process.env.NUXT_PUBLIC_BASE_URL!).buildSummary();
     const changedYears = new Set();
     for (const day of Object.keys(current)) {
         const year = day.substring(0, 4);
diff --git a/src/calendar/helpers.ts b/src/calendar/helpers.ts
index 1a112402c..a4f0a0ec6 100644
--- a/src/calendar/helpers.ts
+++ b/src/calendar/helpers.ts
@@ -1,10 +1,8 @@
 import type { EventAttributes } from 'ics';
-import md5 from 'js-md5';
 import nepali from 'nepali-calendar-js';
 import { v5 as uuid5 } from 'uuid';
 
-import { newDate } from '../helpers.ts';
-
+import { newDate, sha256 } from '~/src/helpers.ts';
 import type { Translator } from '~/src/translator.ts';
 
 export class Day {
@@ -448,16 +446,13 @@ export class Calendar {
         }
     }
 
-    buildSummary(): Record<string, string> {
+    async buildSummary(): Promise<Record<string, string>> {
         const summary: Record<string, string> = {};
         for (const year of this.getAllYears()) {
             for (let month = 1; month <= 12; month++) {
                 for (const day of iterateMonth(year.year, month)) {
-                    const events = [];
-                    for (const event of year.eventsByDate[day.toString()] || []) {
-                        events.push(event.name);
-                    }
-                    summary[day.toString()] = md5(JSON.stringify(events));
+                    const events = (year.eventsByDate[day.toString()] || []).map((event) => event.name);
+                    summary[day.toString()] = await sha256(JSON.stringify(events));
                 }
             }
         }