From c5afd9f895630a53474a504a815b1d5aa75763ec Mon Sep 17 00:00:00 2001
From: Eli Ribble <eli@theribbles.org>
Date: Tue, 27 Aug 2024 15:45:33 -0700
Subject: [PATCH] Allow selection of the account.

This was surprisingly complex because I tried to use react-router and
found no easily and reasonable way to do it, so instead I hooked the
location change event myself and plumbed it through. This required me to
switch to a class-style component rather than a functional one, which
required translating a bunch of coding styles through React.

Overall I'm happy, it works pretty well and simply.
---
 src/AccountList.tsx |   7 +-
 src/App.tsx         | 153 +++++++++++++++++++++++++++++---------------
 2 files changed, 105 insertions(+), 55 deletions(-)

diff --git a/src/AccountList.tsx b/src/AccountList.tsx
index 25d6b53..50d045b 100644
--- a/src/AccountList.tsx
+++ b/src/AccountList.tsx
@@ -5,19 +5,20 @@ import { IAccount } from "jmap-client-ts/lib/types";
 
 type AccountIdMap = { [accountId: string]: IAccount };
 type AccountListProps = {
+	account: IAccount | null;
 	accounts: AccountIdMap;
 };
 
-const AccountList: React.FC<AccountListProps> = ({ accounts }) => {
+const AccountList: React.FC<AccountListProps> = ({ account, accounts }) => {
 	return (
 		<Dropdown>
 			<Dropdown.Toggle variant="success" id="dropdown-basic">
-				Dropdown Button
+				{account ? account.name : "select account"}
 			</Dropdown.Toggle>
 
 			<Dropdown.Menu>
 				{Object.keys(accounts).map((key: keyof AccountIdMap) => (
-					<Dropdown.Item href={"#/" + key}>{accounts[key].name}</Dropdown.Item>
+					<Dropdown.Item href={"#" + key}>{accounts[key].name}</Dropdown.Item>
 				))}
 			</Dropdown.Menu>
 		</Dropdown>
diff --git a/src/App.tsx b/src/App.tsx
index 1ebf0de..5a073d4 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -2,98 +2,147 @@ import "./App.css";
 import "bootstrap/dist/css/bootstrap.min.css";
 import * as base64 from "base-64";
 import { Client } from "jmap-client-ts";
-import { ISession } from "jmap-client-ts/lib/types";
+import { IAccount, ISession } from "jmap-client-ts/lib/types";
 import { FetchTransport } from "jmap-client-ts/lib/utils/fetch-transport";
 
 import AccountList from "./AccountList";
 import AuthModal from "./AuthModal";
-import React, { useEffect, useState } from "react";
+import React from "react";
 
 interface IAuth {
 	email: string;
 	password: string;
 }
 
-interface IAppState {
-	auth: IAuth;
-	client: Client | null;
-	session: ISession | null;
+interface ILocation {
+	accountId: string;
 }
 
-const App = () => {
-	const [state, setInternalState] = useState<IAppState>({
-		auth: { email: "", password: "" },
-		client: null,
-		session: null,
-	});
+type AppState = {
+	auth: IAuth;
+	location: ILocation;
+	session: ISession | null;
+};
 
-	// When the user provides credentials
-	const onLogin = (email: string, password: string) => {
-		// Store the provided credentials for now
-		state.auth.email = email;
-		state.auth.password = password;
-		state.client = null;
-		setInternalState(state);
-		localStorage.setItem("auth", JSON.stringify(state.auth));
-		doLogin(state.auth);
+type AppProps = {};
+
+class App extends React.Component<AppProps, AppState> {
+	account(): IAccount | null {
+		if (!(this.state.session && this.state.session.accounts)) return null;
+		return this.state.session.accounts[this.state.location.accountId];
+	}
+	client: Client | null = null;
+	state: AppState = {
+		auth: { email: "", password: "" },
+		location: { accountId: "" },
+		session: null,
 	};
 
 	// Make the request to get system metadata
-	const doLogin = (auth: IAuth) => {
+	doLogin(auth: IAuth) {
 		const domain = auth.email.split("@")[1];
 		const well_known_url = "https://" + domain + "/.well-known/jmap";
 		const basic_auth =
 			"Basic " + base64.encode(auth.email + ":" + auth.password);
 
-		state.client = new Client({
+		this.client = new Client({
 			accessToken: "fake token",
 			httpHeaders: { Authorization: basic_auth },
 			sessionUrl: well_known_url,
 			transport: new FetchTransport(fetch.bind(window)),
 		});
 
-		state.client
+		this.client
 			.fetchSession()
 			.then(() => {
-				console.log("Session recieved");
-				if (state.client) {
-					state.session = state.client.getSession();
-					setInternalState({
-						...state,
-						session: state.client.getSession(),
-					});
-				}
+				console.log("Session received");
+
+				// For the type checker
+				if (!this.client) return;
+
+				const session = this.client.getSession();
+				this.setState({
+					...this.state,
+					session: session,
+				});
 			})
 			.catch((error) => console.error(error));
 
 		return;
-	};
+	}
 
-	const loadAuth = () => {
+	onHashChange() {
+		console.log(window.location.hash);
+		const hash = window.location.hash.substring(1);
+		this.setState({
+			...this.state,
+			location: { accountId: hash },
+		});
+	}
+	// When the user provides credentials
+	onLogin(email: string, password: string) {
+		// Store the provided credentials for now
+		this.setState({
+			...this.state,
+			auth: {
+				email: email,
+				password: password,
+			},
+		});
+		localStorage.setItem("auth", JSON.stringify(this.state.auth));
+		this.doLogin({ email, password });
+	}
+
+	loadAuth() {
 		const data = localStorage.getItem("auth");
 		if (!data) return;
 		const auth = JSON.parse(data);
-		state.auth = auth;
-		if (state.client == null) {
-			console.log("NULL STATE.client");
-			doLogin(state.auth);
+		this.setState({
+			...this.state,
+			auth: auth,
+		});
+		if (this.client == null) {
+			this.doLogin(auth);
 			return;
 		}
-	};
+	}
 
-	useEffect(() => {
-		loadAuth();
-	}, []);
+	componentDidMount() {
+		window.addEventListener(
+			"hashchange",
+			() => {
+				this.onHashChange();
+			},
+			false,
+		);
+		this.loadAuth();
+		this.onHashChange();
+	}
 
-	return (
-		<div className="App">
-			{state && state.auth ? (
-				<AccountList accounts={state.session ? state.session.accounts : {}} />
-			) : (
-				<AuthModal onLogin={onLogin}></AuthModal>
-			)}
-		</div>
-	);
-};
+	componentWillUnmount() {
+		window.removeEventListener(
+			"hashchange",
+			() => {
+				this.onHashChange();
+			},
+			false,
+		);
+	}
+
+	render() {
+		return (
+			<div className="App">
+				{this.state && this.state.auth ? (
+					<AccountList
+						account={this.account()}
+						accounts={this.state.session ? this.state.session.accounts : {}}
+					/>
+				) : (
+					<AuthModal onLogin={this.onLogin}></AuthModal>
+				)}
+			</div>
+		);
+	}
+}
 
 export default App;