enhance: 非ログイン時には別サーバーに遷移できるように (#13089)

* enhance: 非ログイン時にはMisskey Hub経由で別サーバーに遷移できるように

* fix

* サーバーサイド照会を削除

* クライアント側の照会動作

* hubを経由せずにリモートで続行できるように

* fix と pleaseLogin誘導箇所の追加

* fix

* fix

* Update CHANGELOG.md

---------

Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

packages/frontend/src/pages/lookup.vue

@@ -0,0 +1,97 @@
+<!--
+SPDX-FileCopyrightText: syuilo and other misskey contributors
+SPDX-License-Identifier: AGPL-3.0-only
+-->
+
+<template>
+<MkStickyContainer>
+	<template #header><MkPageHeader :actions="headerActions" :tabs="headerTabs"/></template>
+	<MkSpacer :contentMax="800">
+		<div v-if="state === 'done'" class="_buttonsCenter">
+			<MkButton @click="close">{{ i18n.ts.close }}</MkButton>
+			<MkButton @click="goToMisskey">{{ i18n.ts.goToMisskey }}</MkButton>
+		</div>
+		<div v-else class="_fullInfo">
+			<MkLoading/>
+		</div>
+	</MkSpacer>
+</MkStickyContainer>
+</template>
+
+<script lang="ts" setup>
+import { computed, ref } from 'vue';
+import * as Misskey from 'misskey-js';
+import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
+import { i18n } from '@/i18n.js';
+import { definePageMetadata } from '@/scripts/page-metadata.js';
+import { mainRouter } from '@/router/main.js';
+import MkButton from '@/components/MkButton.vue';
+
+const state = ref<'fetching' | 'done'>('fetching');
+
+function fetch() {
+	const params = new URL(location.href).searchParams;
+
+	// acctのほうはdeprecated
+	let uri = params.get('uri') ?? params.get('acct');
+	if (uri == null) {
+		state.value = 'done';
+		return;
+	}
+
+	let promise: Promise<any>;
+
+	if (uri.startsWith('https://')) {
+		promise = misskeyApi('ap/show', {
+			uri,
+		});
+		promise.then(res => {
+			if (res.type === 'User') {
+				mainRouter.replace(res.object.host ? `/@${res.object.username}@${res.object.host}` : `/@${res.object.username}`);
+			} else if (res.type === 'Note') {
+				mainRouter.replace(`/notes/${res.object.id}`);
+			} else {
+				os.alert({
+					type: 'error',
+					text: 'Not a user',
+				});
+			}
+		});
+	} else {
+		if (uri.startsWith('acct:')) {
+			uri = uri.slice(5);
+		}
+		promise = misskeyApi('users/show', Misskey.acct.parse(uri));
+		promise.then(user => {
+			mainRouter.replace(user.host ? `/@${user.username}@${user.host}` : `/@${user.username}`);
+		});
+	}
+
+	os.promiseDialog(promise, null, null, i18n.ts.fetchingAsApObject);
+}
+
+function close(): void {
+	window.close();
+
+	// 閉じなければ100ms後タイムラインに
+	window.setTimeout(() => {
+		location.href = '/';
+	}, 100);
+}
+
+function goToMisskey(): void {
+	location.href = '/';
+}
+
+fetch();
+
+const headerActions = computed(() => []);
+
+const headerTabs = computed(() => []);
+
+definePageMetadata({
+	title: i18n.ts.lookup,
+	icon: 'ti ti-world-search',
+});
+</script>