refactor(frontend): organize use functions

packages/frontend/src/use/use-note-capture.ts

@@ -0,0 +1,124 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { onUnmounted } from 'vue';
+import type { Ref, ShallowRef } from 'vue';
+import * as Misskey from 'misskey-js';
+import { useStream } from '@/stream.js';
+import { $i } from '@/account.js';
+
+export function useNoteCapture(props: {
+	rootEl: ShallowRef<HTMLElement | undefined>;
+	note: Ref<Misskey.entities.Note>;
+	pureNote: Ref<Misskey.entities.Note>;
+	isDeletedRef: Ref<boolean>;
+}) {
+	const note = props.note;
+	const pureNote = props.pureNote;
+	const connection = $i ? useStream() : null;
+
+	function onStreamNoteUpdated(noteData): void {
+		const { type, id, body } = noteData;
+
+		if ((id !== note.value.id) && (id !== pureNote.value.id)) return;
+
+		switch (type) {
+			case 'reacted': {
+				const reaction = body.reaction;
+
+				if (body.emoji && !(body.emoji.name in note.value.reactionEmojis)) {
+					note.value.reactionEmojis[body.emoji.name] = body.emoji.url;
+				}
+
+				// TODO: reactionsプロパティがない場合ってあったっけ？ なければ || {} は消せる
+				const currentCount = (note.value.reactions || {})[reaction] || 0;
+
+				note.value.reactions[reaction] = currentCount + 1;
+				note.value.reactionCount += 1;
+
+				if ($i && (body.userId === $i.id)) {
+					note.value.myReaction = reaction;
+				}
+				break;
+			}
+
+			case 'unreacted': {
+				const reaction = body.reaction;
+
+				// TODO: reactionsプロパティがない場合ってあったっけ？ なければ || {} は消せる
+				const currentCount = (note.value.reactions || {})[reaction] || 0;
+
+				note.value.reactions[reaction] = Math.max(0, currentCount - 1);
+				note.value.reactionCount = Math.max(0, note.value.reactionCount - 1);
+				if (note.value.reactions[reaction] === 0) delete note.value.reactions[reaction];
+
+				if ($i && (body.userId === $i.id)) {
+					note.value.myReaction = null;
+				}
+				break;
+			}
+
+			case 'pollVoted': {
+				const choice = body.choice;
+
+				const choices = [...note.value.poll.choices];
+				choices[choice] = {
+					...choices[choice],
+					votes: choices[choice].votes + 1,
+					...($i && (body.userId === $i.id) ? {
+						isVoted: true,
+					} : {}),
+				};
+
+				note.value.poll.choices = choices;
+				break;
+			}
+
+			case 'deleted': {
+				props.isDeletedRef.value = true;
+				break;
+			}
+		}
+	}
+
+	function capture(withHandler = false): void {
+		if (connection) {
+			// TODO: このノートがストリーミング経由で流れてきた場合のみ sr する
+			connection.send(document.body.contains(props.rootEl.value ?? null as Node | null) ? 'sr' : 's', { id: note.value.id });
+			if (pureNote.value.id !== note.value.id) connection.send('s', { id: pureNote.value.id });
+			if (withHandler) connection.on('noteUpdated', onStreamNoteUpdated);
+		}
+	}
+
+	function decapture(withHandler = false): void {
+		if (connection) {
+			connection.send('un', {
+				id: note.value.id,
+			});
+			if (pureNote.value.id !== note.value.id) {
+				connection.send('un', {
+					id: pureNote.value.id,
+				});
+			}
+			if (withHandler) connection.off('noteUpdated', onStreamNoteUpdated);
+		}
+	}
+
+	function onStreamConnected() {
+		capture(false);
+	}
+
+	capture(true);
+	if (connection) {
+		connection.on('_connected_', onStreamConnected);
+	}
+
+	onUnmounted(() => {
+		decapture(true);
+		if (connection) {
+			connection.off('_connected_', onStreamConnected);
+		}
+	});
+}