[feature] Allow users to set default interaction policies per status visibility (#3108)

* [feature] Allow users to set default interaction policies

* use vars for default policies

* avoid some code repetition

* unfuck form binding

* avoid bonkers loop

* beep boop

* put policyValsToAPIPolicyVals in separate function

* don't bother with slices.Grow

* oops

web/source/settings/views/user/posts/basic-settings/index.tsx

@@ -0,0 +1,88 @@
+/*
+	GoToSocial
+	Copyright (C) GoToSocial Authors admin@gotosocial.org
+	SPDX-License-Identifier: AGPL-3.0-or-later
+
+	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/>.
+*/
+
+import React from "react";
+import { useTextInput, useBoolInput } from "../../../../lib/form";
+import useFormSubmit from "../../../../lib/form/submit";
+import { Select, Checkbox } from "../../../../components/form/inputs";
+import Languages from "../../../../components/languages";
+import MutationButton from "../../../../components/form/mutation-button";
+import { useUpdateCredentialsMutation } from "../../../../lib/query/user";
+import { Account } from "../../../../lib/types/account";
+
+export default function BasicSettings({ account }: { account: Account }) {
+	/* form keys
+		- string source[privacy]
+		- bool source[sensitive]
+		- string source[language]
+		- string source[status_content_type]
+	 */
+	const form = {
+		defaultPrivacy: useTextInput("source[privacy]", { source: account, defaultValue: "unlisted" }),
+		isSensitive: useBoolInput("source[sensitive]", { source: account }),
+		language: useTextInput("source[language]", { source: account, valueSelector: (s: Account) => s.source?.language?.toUpperCase() ?? "EN" }),
+		statusContentType: useTextInput("source[status_content_type]", { source: account, defaultValue: "text/plain" }),
+	};
+	
+	const [submitForm, result] = useFormSubmit(form, useUpdateCredentialsMutation());
+	
+	return (
+		<form className="post-settings" onSubmit={submitForm}>
+			<div className="form-section-docs">
+				<h3>Basic</h3>
+				<a
+					href="https://docs.gotosocial.org/en/latest/user_guide/settings#post-settings"
+					target="_blank"
+					className="docslink"
+					rel="noreferrer"
+				>
+				Learn more about these settings (opens in a new tab)
+				</a>
+			</div>
+			<Select field={form.language} label="Default post language" options={
+				<Languages />
+			}>
+			</Select>
+			<Select field={form.defaultPrivacy} label="Default post privacy" options={
+				<>
+					<option value="public">Public</option>
+					<option value="unlisted">Unlisted</option>
+					<option value="private">Followers-only</option>
+				</>
+			}>
+			</Select>
+			<Select field={form.statusContentType} label="Default post (and bio) format" options={
+				<>
+					<option value="text/plain">Plain (default)</option>
+					<option value="text/markdown">Markdown</option>
+				</>
+			}>
+			</Select>
+			<Checkbox
+				field={form.isSensitive}
+				label="Mark my posts as sensitive by default"
+			/>
+			<MutationButton
+				disabled={false}
+				label="Save settings"
+				result={result}
+			/>
+		</form>
+	);
+}