From 06c1e5674a2e77bfa22048b4d559949403d30e0e Mon Sep 17 00:00:00 2001
From: Ivan Chen <ivan@tagg.id>
Date: Wed, 2 Jun 2021 14:54:05 -0400
Subject: Improve util code

---
 src/utils/common.ts | 39 ++++++++++++++++++++++-----------------
 1 file changed, 22 insertions(+), 17 deletions(-)

(limited to 'src/utils')

diff --git a/src/utils/common.ts b/src/utils/common.ts
index 7e54eeaf..cfd9244a 100644
--- a/src/utils/common.ts
+++ b/src/utils/common.ts
@@ -1,6 +1,6 @@
 import AsyncStorage from '@react-native-community/async-storage';
 import moment from 'moment';
-import {Linking} from 'react-native';
+import {ImageSourcePropType, Linking} from 'react-native';
 import {getAll} from 'react-native-contacts';
 import {
   BADGE_DATA,
@@ -205,26 +205,31 @@ export const validateImageLink = async (url: string | undefined) => {
 };
 
 /**
- * Turns a list badges into display badges (with img) by looking up the img source
- * from our badge asset lookup constant.
+ * Turns a list of badges into display badges (just a badge with img) by
+ * looking up the img source from our badge asset lookup constant.
+ *
+ * WARNING: Assumes a small list of badges, complexity goes up exponentially.
+ *
  * @param badges list of university badges
+ * @param university university of which all the badges belong
  * @returns list of display badges
  */
-export const badgesToDisplayBadges = (badges: UniversityBadge[]) => {
-  const displayBadges: UniversityBadgeDisplayType[] = [];
-  badges.forEach((badge) => {
-    BADGE_DATA[badge.university].forEach((category) => {
-      if (category.title === badge.category) {
-        category.data.forEach((badgeInfo) => {
-          if (badgeInfo.badgeName === badge.name) {
-            displayBadges.push({
-              ...badge,
-              img: badgeInfo.badgeImage,
-            });
-          }
-        });
+export const badgesToDisplayBadges = (
+  badges: UniversityBadge[],
+  university: UniversityType,
+) => {
+  const badgeSet: Set<string> = new Set(badges.map((b) => b.category + b.name));
+  const badgeToImgMap: Record<string, ImageSourcePropType> = {};
+  BADGE_DATA[university].forEach((category) => {
+    category.data.forEach((badgeInfo) => {
+      const key = category.title + badgeInfo.badgeName;
+      if (badgeSet.has(key)) {
+        badgeToImgMap[key] = badgeInfo.badgeImage;
       }
     });
   });
-  return displayBadges;
+  return <UniversityBadgeDisplayType[]>badges.map((b) => ({
+    ...b,
+    img: badgeToImgMap[b.category + b.name],
+  }));
 };
-- 
cgit v1.2.3-70-g09d2