From f52a8a1549a24f9dff05f77ef87c46edee83f7ba Mon Sep 17 00:00:00 2001
From: teehee567 <alexbanana900@gmail.com>
Date: Wed, 3 Apr 2024 15:59:46 +1100
Subject: [PATCH 1/3] feat: convert server time to utc

---
 src/utils/hoyolab.ts | 48 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/src/utils/hoyolab.ts b/src/utils/hoyolab.ts
index 9b7d5a9..23e9af3 100644
--- a/src/utils/hoyolab.ts
+++ b/src/utils/hoyolab.ts
@@ -7,6 +7,54 @@ import {
 } from '../types/wish';
 import { getLatestWishFromGenshinAccount, linkGenshinAccountToUser } from '../db/utils';
 
+
+// last updated 3/04/2024
+/**
+ * converts a time returned by server into utc time:
+ * 
+ * @param uid genshin uid
+ * @param date the time that should be converted into utc
+ * @returns utc taime
+ */
+const serverTimeToUTC = (
+	uid: string,
+	date: string,
+): Date => {
+	const prefix = uid.length === 9 ? uid.substring(0, 1) : uid.substring(0, 2);
+	// convert to utc date, or js will take in as local
+	let utcDate = new Date(date + 'Z');
+	switch (prefix) {
+		// mainland china
+		// utc + 8
+		case "1":
+		case "2":
+		case "3":
+		case "5":
+		// TW, HK, MO china aswell
+		case "9":
+		// asia also follows china
+		case "8":
+		case "18":
+			utcDate.setHours(utcDate.getHours() - 8);
+			break;
+
+		// america utc -5
+		case "6":
+			utcDate.setHours(utcDate.getHours() + 5);
+			break;
+
+		// europe utc + 1
+		case "7":
+			utcDate.setHours(utcDate.getHours() - 1);
+			break;
+
+		default:
+			console.error(`Unhandled UID prefix {${prefix}} for {${date}}`);
+			break;
+	}
+	return utcDate;
+}
+
 /**
  * Fetches wish history from the Genshin Impact API.
  *

From fb13fc65423a063b922c989527cf8a9bddd69ba9 Mon Sep 17 00:00:00 2001
From: teehee567 <alexbanana900@gmail.com>
Date: Wed, 3 Apr 2024 16:02:42 +1100
Subject: [PATCH 2/3] style: prettier got angry

---
 src/utils/hoyolab.ts | 28 ++++++++++++----------------
 1 file changed, 12 insertions(+), 16 deletions(-)

diff --git a/src/utils/hoyolab.ts b/src/utils/hoyolab.ts
index 23e9af3..b979e88 100644
--- a/src/utils/hoyolab.ts
+++ b/src/utils/hoyolab.ts
@@ -7,44 +7,40 @@ import {
 } from '../types/wish';
 import { getLatestWishFromGenshinAccount, linkGenshinAccountToUser } from '../db/utils';
 
-
 // last updated 3/04/2024
 /**
  * converts a time returned by server into utc time:
- * 
+ *
  * @param uid genshin uid
  * @param date the time that should be converted into utc
  * @returns utc taime
  */
-const serverTimeToUTC = (
-	uid: string,
-	date: string,
-): Date => {
+const serverTimeToUTC = (uid: string, date: string): Date => {
 	const prefix = uid.length === 9 ? uid.substring(0, 1) : uid.substring(0, 2);
 	// convert to utc date, or js will take in as local
 	let utcDate = new Date(date + 'Z');
 	switch (prefix) {
 		// mainland china
 		// utc + 8
-		case "1":
-		case "2":
-		case "3":
-		case "5":
+		case '1':
+		case '2':
+		case '3':
+		case '5':
 		// TW, HK, MO china aswell
-		case "9":
+		case '9':
 		// asia also follows china
-		case "8":
-		case "18":
+		case '8':
+		case '18':
 			utcDate.setHours(utcDate.getHours() - 8);
 			break;
 
 		// america utc -5
-		case "6":
+		case '6':
 			utcDate.setHours(utcDate.getHours() + 5);
 			break;
 
 		// europe utc + 1
-		case "7":
+		case '7':
 			utcDate.setHours(utcDate.getHours() - 1);
 			break;
 
@@ -53,7 +49,7 @@ const serverTimeToUTC = (
 			break;
 	}
 	return utcDate;
-}
+};
 
 /**
  * Fetches wish history from the Genshin Impact API.

From 361280a8c0b8400196c8fb23fbb6d5ecb78a7299 Mon Sep 17 00:00:00 2001
From: teehee567 <alexbanana900@gmail.com>
Date: Wed, 3 Apr 2024 16:04:13 +1100
Subject: [PATCH 3/3] fix: not exporting serverTimeToUTC func

---
 src/utils/hoyolab.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/utils/hoyolab.ts b/src/utils/hoyolab.ts
index b979e88..a804dfe 100644
--- a/src/utils/hoyolab.ts
+++ b/src/utils/hoyolab.ts
@@ -18,7 +18,7 @@ import { getLatestWishFromGenshinAccount, linkGenshinAccountToUser } from '../db
 const serverTimeToUTC = (uid: string, date: string): Date => {
 	const prefix = uid.length === 9 ? uid.substring(0, 1) : uid.substring(0, 2);
 	// convert to utc date, or js will take in as local
-	let utcDate = new Date(date + 'Z');
+	const utcDate = new Date(date + 'Z');
 	switch (prefix) {
 		// mainland china
 		// utc + 8
@@ -157,4 +157,4 @@ const randomDelay = async (min: number, max: number): Promise<void> => {
 	await new Promise((resolve) => setTimeout(resolve, duration));
 };
 
-export { getWishes, getGachaConfigList };
+export { getWishes, getGachaConfigList, serverTimeToUTC };