[feature] Application creation + management via API + settings panel (#3906)

* [feature] Application creation + management via API + settings panel

* fix docs links

* add errnorows test

* use known application as shorter

* add comment about side effects

1 files changed, 150 insertions, 0 deletions

diff --git a/web/source/settings/views/user/applications/new.tsx b/web/source/settings/views/user/applications/new.tsx
new file mode 100644
index 000000000..fc5e5cc42
--- /dev/null
+++ b/web/source/settings/views/user/applications/new.tsx
@@ -0,0 +1,150 @@
+/*
+	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 useFormSubmit from "../../../lib/form/submit";
+import { useTextInput } from "../../../lib/form";
+import MutationButton from "../../../components/form/mutation-button";
+import { TextArea, TextInput } from "../../../components/form/inputs";
+import { useLocation } from "wouter";
+import { useCreateAppMutation } from "../../../lib/query/user/applications";
+import { urlValidator, useScopesValidator } from "../../../lib/util/formvalidators";
+import { useCallbackURL } from "./common";
+import { HighlightedCode } from "../../../components/highlightedcode";
+
+export default function NewApp() {
+	const [ _location, setLocation ] = useLocation();
+	const callbackURL = useCallbackURL();
+	const scopesValidator = useScopesValidator();
+
+	const form = {
+		name: useTextInput("client_name"),
+		redirect_uris: useTextInput("redirect_uris", {
+			validator: (redirectURIs: string) => {
+				if (redirectURIs === "") {
+					return "";
+				}
+
+				const invalids = redirectURIs.
+					split("\n").
+					map(redirectURI => redirectURI === "urn:ietf:wg:oauth:2.0:oob" ? "" : urlValidator(redirectURI)).
+					flatMap((invalid) => invalid || []);
+
+				return invalids.join(", ");
+			}
+		}),
+		scopes: useTextInput("scopes", {
+			validator: (scopesStr: string) => {
+				if (scopesStr === "") {
+					return "";
+				}
+				return scopesValidator(scopesStr.split(" "));
+			}
+		}),
+		website: useTextInput("website", {
+			validator: urlValidator,
+		}),
+	};
+
+	const [formSubmit, result] = useFormSubmit(
+		form,
+		useCreateAppMutation(),
+		{
+			changedOnly: false,
+			onFinish: (res) => {
+				if (res.data) {
+					// Creation successful,
+					// redirect to apps overview.
+					setLocation(`/search`);
+				}
+			},
+		});
+
+	return (
+		<form
+			className="application-new"
+			onSubmit={formSubmit}
+			// Prevent password managers
+			// trying to fill in fields.
+			autoComplete="off"
+		>
+			<div className="form-section-docs">
+				<h2>New Application</h2>
+				<p>
+					On this page you can create a new managed OAuth client application, with the specified redirect URIs and scopes.
+					<br/>If not specified, redirect URIs defaults to <span className="monospace">urn:ietf:wg:oauth:2.0:oob</span>, and scopes defaults to <span className="monospace">read</span>.
+					<br/>If you want to obtain an access token for your application here in the settings panel, include this settings panel callback URL in your redirect URIs:
+					<HighlightedCode code={callbackURL} lang="url" />
+				</p>
+				<a
+					href="https://docs.gotosocial.org/en/latest/user_guide/settings/#applications"
+					target="_blank"
+					className="docslink"
+					rel="noreferrer"
+				>
+					Learn more about application redirect URIs and scopes (opens in a new tab)
+				</a>
+			</div>
+
+			<TextInput
+				field={form.name}
+				label="Application name (required)"
+				placeholder="My Cool Application"
+				autoCapitalize="words"
+				spellCheck="false"
+				maxLength={1024}
+			/>
+
+			<TextInput
+				field={form.website}
+				label="Application website (optional)"
+				placeholder="https://example.org/my_cool_application"
+				autoCapitalize="none"
+				spellCheck="false"
+				type="url"
+				maxLength={1024}
+			/>
+
+			<TextArea
+				field={form.redirect_uris}
+				label="Redirect URIs (optional, newline-separated entries)"
+				placeholder={`https://example.org/my_cool_application`}
+				autoCapitalize="none"
+				spellCheck="false"
+				rows={5}
+				maxLength={2056}
+			/>
+
+			<TextInput
+				field={form.scopes}
+				label="Scopes (optional, space-separated entries)"
+				placeholder={`read write push`}
+				autoCapitalize="none"
+				spellCheck="false"
+				maxLength={1024}
+			/>
+
+			<MutationButton
+				label="Create"
+				result={result}
+				disabled={!form.name.value}
+			/>
+		</form>
+	);
+}