initial commit

fluxer_app/src/utils/MessageNavigator.ts

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+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import * as MessageActionCreators from '~/actions/MessageActionCreators';
+import {type JumpTypes, ME} from '~/Constants';
+import {Routes} from '~/Routes';
+import ChannelStore from '~/stores/ChannelStore';
+import * as RouterUtils from '~/utils/RouterUtils';
+
+interface MessageJumpOptions {
+	flash?: boolean;
+	offset?: number;
+	returnTargetId?: string;
+	jumpType?: JumpTypes;
+	viewContext?: 'favorites';
+}
+
+export const buildMessagePath = (
+	channelId: string,
+	messageId: string,
+	viewContext?: MessageJumpOptions['viewContext'],
+): string => {
+	if (viewContext === 'favorites') {
+		return Routes.favoritesChannelMessage(channelId, messageId);
+	}
+
+	const channel = ChannelStore.getChannel(channelId);
+	const guildId = channel?.guildId;
+
+	if (guildId && guildId !== ME) {
+		return Routes.channelMessage(guildId, channelId, messageId);
+	}
+
+	return Routes.dmChannelMessage(channelId, messageId);
+};
+
+export const goToMessage = (channelId: string, messageId: string, options?: MessageJumpOptions): void => {
+	const path = buildMessagePath(channelId, messageId, options?.viewContext);
+	RouterUtils.transitionTo(path);
+	MessageActionCreators.jumpToMessage(
+		channelId,
+		messageId,
+		options?.flash ?? true,
+		options?.offset,
+		options?.returnTargetId,
+		options?.jumpType,
+	);
+};
+
+export const parseMessagePath = (path: string): {channelId: string; messageId: string} | null => {
+	const parts = path.split('/').filter(Boolean);
+	if (parts.length < 4) return null;
+	if (parts[0] !== 'channels') return null;
+
+	const channelId = parts[2];
+	const messageId = parts[3];
+
+	if (!channelId || !messageId) return null;
+	return {channelId, messageId};
+};