1 files changed, 75 insertions, 0 deletions
diff --git a/web/source/settings/lib/query/lib.js b/web/source/settings/lib/query/lib.js
new file mode 100644
index 000000000..dae749198
--- /dev/null
+++ b/web/source/settings/lib/query/lib.js
@@ -0,0 +1,75 @@
+/*
+	GoToSocial
+	Copyright (C) 2021-2023 GoToSocial Authors admin@gotosocial.org
+
+	This program 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.
+
+	This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+"use strict";
+
+const syncpipe = require("syncpipe");
+const base = require("./base");
+
+module.exports = {
+	unwrapRes(res) {
+		if (res.error != undefined) {
+			throw res.error;
+		} else {
+			return res.data;
+		}
+	},
+	domainListToObject: (data) => {
+		// Turn flat Array into Object keyed by block's domain
+		return syncpipe(data, [
+			(_) => _.map((entry) => [entry.domain, entry]),
+			(_) => Object.fromEntries(_)
+		]);
+	},
+	replaceCacheOnMutation: makeCacheMutation((draft, newData) => {
+		Object.assign(draft, newData);
+	}),
+	appendCacheOnMutation: makeCacheMutation((draft, newData) => {
+		draft.push(newData);
+	}),
+	spliceCacheOnMutation: makeCacheMutation((draft, newData, { key }) => {
+		draft.splice(key, 1);
+	}),
+	updateCacheOnMutation: makeCacheMutation((draft, newData, { key }) => {
+		draft[key] = newData;
+	}),
+	removeFromCacheOnMutation: makeCacheMutation((draft, newData, { key }) => {
+		delete draft[key];
+	}),
+	editCacheOnMutation: makeCacheMutation((draft, newData, { update }) => {
+		update(draft, newData);
+	})
+};
+
+// https://redux-toolkit.js.org/rtk-query/usage/manual-cache-updates#pessimistic-updates
+function makeCacheMutation(action) {
+	return function cacheMutation(queryName, { key, findKey, arg, ...opts } = {}) {
+		return {
+			onQueryStarted: (_, { dispatch, queryFulfilled }) => {
+				queryFulfilled.then(({ data: newData }) => {
+					dispatch(base.util.updateQueryData(queryName, arg, (draft) => {
+						if (findKey != undefined) {
+							key = findKey(draft, newData);
+						}
+						action(draft, newData, { key, ...opts });
+					}));
+				});
+			}
+		};
+	};
+}
+\ No newline at end of file