From edb39a089d6652eb5b0212069f3050823c4c07e7 Mon Sep 17 00:00:00 2001
From: かっこかり <67428053+kakkokari-gtyih@users.noreply.github.com>
Date: Tue, 6 Feb 2024 16:26:03 +0900
Subject: enhance(frontend): KeepAliveのページキャッシュを削除できるように
 (#13180)
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* enhance(frontend): 内部のページキャッシュを削除できるように

* Update Changelog
---
 .../frontend/src/components/global/RouterView.vue  | 42 +++++++++++++++++++---
 1 file changed, 37 insertions(+), 5 deletions(-)

(limited to 'packages/frontend/src/components')

diff --git a/packages/frontend/src/components/global/RouterView.vue b/packages/frontend/src/components/global/RouterView.vue
index dc7474835d..aeb87e659b 100644
--- a/packages/frontend/src/components/global/RouterView.vue
+++ b/packages/frontend/src/components/global/RouterView.vue
@@ -4,7 +4,10 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<KeepAlive :max="defaultStore.state.numberOfPageCache">
+<KeepAlive
+	:max="defaultStore.state.numberOfPageCache"
+	:exclude="pageCacheController"
+>
 	<Suspense :timeout="0">
 		<component :is="currentPageComponent" :key="key" v-bind="Object.fromEntries(currentPageProps)"/>
 
@@ -16,9 +19,11 @@ SPDX-License-Identifier: AGPL-3.0-only
 </template>
 
 <script lang="ts" setup>
-import { inject, onBeforeUnmount, provide, ref, shallowRef } from 'vue';
-import { IRouter, Resolved } from '@/nirax.js';
+import { inject, onBeforeUnmount, provide, ref, shallowRef, computed, nextTick } from 'vue';
+import { IRouter, Resolved, RouteDef } from '@/nirax.js';
 import { defaultStore } from '@/store.js';
+import { globalEvents } from '@/events.js';
+import MkLoadingPage from '@/pages/_loading_.vue';
 
 const props = defineProps<{
 	router?: IRouter;
@@ -46,20 +51,47 @@ function resolveNested(current: Resolved, d = 0): Resolved | null {
 }
 
 const current = resolveNested(router.current)!;
-const currentPageComponent = shallowRef(current.route.component);
+const currentPageComponent = shallowRef('component' in current.route ? current.route.component : MkLoadingPage);
 const currentPageProps = ref(current.props);
 const key = ref(current.route.path + JSON.stringify(Object.fromEntries(current.props)));
 
 function onChange({ resolved, key: newKey }) {
 	const current = resolveNested(resolved);
-	if (current == null) return;
+	if (current == null || 'redirect' in current.route) return;
 	currentPageComponent.value = current.route.component;
 	currentPageProps.value = current.props;
 	key.value = current.route.path + JSON.stringify(Object.fromEntries(current.props));
+
+	nextTick(() => {
+		// ページ遷移完了後に再びキャッシュを有効化
+		if (clearCacheRequested.value) {
+			clearCacheRequested.value = false;
+		}
+	});
 }
 
 router.addListener('change', onChange);
 
+// #region キャッシュ制御
+
+/**
+ * キャッシュクリアが有効になったら、全キャッシュをクリアする
+ * 
+ * keepAlive側にwatcherがあるのですぐ消えるとはおもうけど、念のためページ遷移完了まではキャッシュを無効化しておく。
+ * キャッシュ有効時向けにexcludeを使いたい場合は、pageCacheControllerに並列に突っ込むのではなく、下に追記すること
+ */
+const pageCacheController = computed(() => clearCacheRequested.value ? /.*/ : undefined);
+const clearCacheRequested = ref(false);
+
+globalEvents.on('requestClearPageCache', () => {
+	if (_DEV_) console.log('clear page cache requested');
+	if (!clearCacheRequested.value) {
+		clearCacheRequested.value = true;
+	}
+});
+
+// #endregion
+
 onBeforeUnmount(() => {
 	router.removeListener('change', onChange);
 });
-- 
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