[frontend] Unified panels (#812)

* settings panel restructuring

* clean up old Gin handlers

* colorscheme redesign, some other small css tweaks

* basic router layout, error boundary

* colorscheme redesign, some other small css tweaks

* kebab-case consistency

* superfluous padding on applist

* remove unused consts

* redux, whitespace changes..

* use .jsx extensions for components

* login flow up till app registration

* full redux oauth implementation, with basic error handling

* split oauth api functions

* oauth api revocation handling

* basic profile change submission

* move old dir

* profile overview

* fix keeping track of the wrong instance url (for different instance/api domains)

* use redux state for profile form

* delete old/index.js, old/basic.js, fully implemented

* implement old/user/profile.js

* implement password change

* remove debug logging

* support future api for removing files

* customize profile css

* remove unneeded wrapper components

* restructure form fields

* start on admin pages

* admin panel settings

* admin settings panel

* remove old/admin files

* add top-level redirect

* refactor/cleanup forms

* only do API checks on logged-in state

* admin-status based routing

* federation block routing

* federation blocks

* upgrade dependencies

* react 18 changes

* media cleanup

* fix useEffect hooks

* remove unused require

* custom emoji base

* emoji uploader

* delete last old panel files

* sidebar styling, remove unused page

* refactor submit functions

* fix sidebar boxshadow-border

* fix old css variables

* fix fake-toot avatar

* fix non-square emoji

* fix user settings redux keys

* properly get admin account contact from instance response

* Account.source default values

* source.status_format key

* mobile responsiveness

* mobile element tweaks

* proper redirect after removing block

* add redirects for old setting panel urls

* deletes

* fix mobile overflow

* clean up debug logging calls

1 files changed, 102 insertions, 0 deletions

diff --git a/web/source/settings-panel/components/login.jsx b/web/source/settings-panel/components/login.jsx
new file mode 100644
index 000000000..c67e99acd
--- /dev/null
+++ b/web/source/settings-panel/components/login.jsx
@@ -0,0 +1,102 @@
+/*
+	GoToSocial
+	Copyright (C) 2021-2022 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 Promise = require("bluebird");
+const React = require("react");
+const Redux = require("react-redux");
+
+const { setInstance } = require("../redux/reducers/oauth").actions;
+const api = require("../lib/api");
+
+module.exports = function Login({error}) {
+	const dispatch = Redux.useDispatch();
+	const [ instanceField, setInstanceField ] = React.useState("");
+	const [ errorMsg, setErrorMsg ] = React.useState();
+	const instanceFieldRef = React.useRef("");
+
+	React.useEffect(() => {
+		// check if current domain runs an instance
+		let currentDomain = window.location.origin;
+		Promise.try(() => {
+			return dispatch(api.instance.fetchWithoutStore(currentDomain));
+		}).then(() => {
+			if (instanceFieldRef.current.length == 0) { // user hasn't started typing yet
+				dispatch(setInstance(currentDomain));
+				instanceFieldRef.current = currentDomain;
+				setInstanceField(currentDomain);
+			}
+		}).catch((e) => {
+			console.log("Current domain does not host a valid instance: ", e);
+		});
+	}, []);
+
+	function tryInstance() {
+		let domain = instanceFieldRef.current;
+		Promise.try(() => {
+			return dispatch(api.instance.fetchWithoutStore(domain)).catch((e) => {
+				// TODO: clearer error messages for common errors
+				console.log(e);
+				throw e;
+			});
+		}).then(() => {
+			dispatch(setInstance(domain));
+
+			return dispatch(api.oauth.register()).catch((e) => {
+				console.log(e);
+				throw e;
+			});
+		}).then(() => {
+			return dispatch(api.oauth.authorize()); // will send user off-page
+		}).catch((e) => {
+			setErrorMsg(
+				<>
+					<b>{e.type}</b>
+					<span>{e.message}</span>
+				</>
+			);
+		});
+	}
+
+	function updateInstanceField(e) {
+		if (e.key == "Enter") {
+			tryInstance(instanceField);
+		} else {
+			setInstanceField(e.target.value);
+			instanceFieldRef.current = e.target.value;
+		}
+	}
+
+	return (
+		<section className="login">
+			<h1>OAUTH Login:</h1>
+			{error}
+			<form onSubmit={(e) => e.preventDefault()}>
+				<label htmlFor="instance">Instance: </label>
+				<input value={instanceField} onChange={updateInstanceField} id="instance"/>
+				{errorMsg && 
+				<div className="error">
+					{errorMsg}
+				</div>
+				}
+				<button onClick={tryInstance}>Authenticate</button>
+			</form>
+		</section>
+	);
+};
\ No newline at end of file