From d49b32a5525c7fba45da0b0a2c3f2b900b57f30e Mon Sep 17 00:00:00 2001
From: Julien Calixte <julienc@bam.tech>
Date: Sat, 8 Jul 2023 00:41:32 +0200
Subject: [PATCH] =?UTF-8?q?=E2=9C=A8=20(card)=20limit=20to=20max=20level?=
 =?UTF-8?q?=20and=20sort=20by=20level=20max=20to=20min?=
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---
 src/modules/card/components/FlipCardList.vue      |  6 +++++-
 .../card/hooks/useSpacedRepetitionCards.ts        | 15 +++++++++------
 2 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/src/modules/card/components/FlipCardList.vue b/src/modules/card/components/FlipCardList.vue
index f2d9bcd..fcdabe3 100644
--- a/src/modules/card/components/FlipCardList.vue
+++ b/src/modules/card/components/FlipCardList.vue
@@ -9,7 +9,11 @@ const emits = defineEmits<{
   fail: [id: string]
 }>()
 
-const cards = ref(props.cards)
+const cards = ref(
+  [...props.cards].sort((a, b) =>
+    a.repetition.level > b.repetition.level ? -1 : 1
+  )
+)
 
 const currentIndex = ref(0)
 
diff --git a/src/modules/card/hooks/useSpacedRepetitionCards.ts b/src/modules/card/hooks/useSpacedRepetitionCards.ts
index 3f918a9..8ea8333 100644
--- a/src/modules/card/hooks/useSpacedRepetitionCards.ts
+++ b/src/modules/card/hooks/useSpacedRepetitionCards.ts
@@ -1,3 +1,5 @@
+// https://npm.io/package/supermemo
+
 import { DataType } from '@/data/DataType.enum'
 import { data } from '@/data/data'
 import { useFile } from '@/hooks/useFile.hook'
@@ -11,7 +13,7 @@ import { useAsyncState } from '@vueuse/core'
 import { addDays, isAfter } from 'date-fns'
 import { computed, nextTick, watch } from 'vue'
 
-const MAX_LEVEL = 10
+const MAX_LEVEL = 8
 
 export interface Repetition {
   repetition: RepetitionCard
@@ -54,7 +56,10 @@ export const useSpacedRepetitionCards = () => {
           repeatDate: new Date()
         })
 
-        if (isAfter(new Date(repetition.repeatDate), new Date())) {
+        if (
+          isAfter(new Date(repetition.repeatDate), new Date()) ||
+          repetition.level === MAX_LEVEL
+        ) {
           continue
         }
 
@@ -88,12 +93,10 @@ export const useSpacedRepetitionCards = () => {
       return
     }
 
-    const newLevel = repetition.level + 1
-
     await data.update<DataType.RepetitionCard, RepetitionCard>({
       ...repetition,
-      level: Math.min(newLevel, MAX_LEVEL),
-      repeatDate: addDays(new Date(), newLevel)
+      level: Math.min(repetition.level + 1, MAX_LEVEL),
+      repeatDate: addDays(new Date(), 2 ** repetition.level)
     })
   }
   const failRepetition = async (cardId: string) => {