Add mailbox to location hash.

Now we can preserve what mailbox we're looking at.

src/App.tsx

@@ -9,6 +9,7 @@ import React from "react";
 
 interface ILocation {
 	accountId: string;
+	mailboxId: string;
 }
 
 type AppState = {
@@ -25,22 +26,33 @@ class App extends React.Component<AppProps, AppState> {
 	account(): IAccount | null {
 		return this.client.account(this.state.location.accountId);
 	}
+	mailbox(): IMailbox | null {
+		return this.client.mailbox(
+			this.state.location.accountId,
+			this.state.location.mailboxId,
+		);
+	}
 	client: Client = new Client();
 	state: AppState = {
 		account: null,
 		accounts: {},
 		auth: { email: "", password: "" },
-		location: { accountId: "" },
+		location: { accountId: "", mailboxId: "" },
 		mailbox: null,
 	};
 
 	onHashChange() {
-		console.log(window.location.hash);
 		const hash = window.location.hash.substring(1);
+		const parts = hash.split("/");
+		const accountId = parts[0];
+		const mailboxId = parts[1];
 		this.setState({
 			...this.state,
 			account: this.account(),
-			location: { accountId: hash },
+			location: {
+				accountId: accountId,
+				mailboxId: mailboxId,
+			},
 		});
 	}
 
@@ -65,6 +77,7 @@ class App extends React.Component<AppProps, AppState> {
 			...this.state,
 			mailbox: this.client.mailbox(this.state.account.id, mailboxId),
 		});
+		window.location.hash = this.state.location.accountId + "/" + mailboxId;
 	}
 
 	// Load up auth credentials from the local store
@@ -96,6 +109,7 @@ class App extends React.Component<AppProps, AppState> {
 				accounts: this.client.state.session
 					? this.client.state.session.accounts
 					: {},
+				mailbox: this.mailbox(),
 			});
 		});
 	}