Enable user switching

app/Http/Controllers/UserSwitchController.php

@@ -0,0 +1,75 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use Illuminate\Support\Facades\Auth;
+use Illuminate\Support\Facades\Redirect;
+use Illuminate\Support\Facades\Session;
+
+use App\Models\User;
+use Symfony\Component\HttpFoundation\RedirectResponse;
+
+class UserSwitchController extends Controller
+{
+	private const redirect = '/';
+
+	public function __construct()
+	{
+		$this->middleware('auth');
+	}
+
+	/**
+	 * Is the user authorised to switch to another user
+	 *
+	 * @param User $o
+	 * @return bool
+	 */
+	private function switch_authorised(User $o): bool
+	{
+		return Auth::user()->admin;
+	}
+
+	/**
+	 * Are we currently in a switch session
+	 *
+	 * @return bool
+	 */
+	private function switch_session(): bool
+	{
+		return ! Session::get('orig_user');
+	}
+
+	/**
+	 * Switch the user to another user
+	 *
+	 * @param User $o
+	 * @return RedirectResponse
+	 */
+	public function user_switch_start(User $o): RedirectResponse
+	{
+		if ($this->switch_session() AND $this->switch_authorised($o)) {
+			Session::put('orig_user',Auth::id());
+			Auth::login($o);
+
+		} else {
+			abort(404,'Not found');
+		}
+
+		return Redirect::to(self::redirect);
+	}
+
+	/**
+	 * Return the user back to the original user
+	 *
+	 * @return RedirectResponse
+	 */
+	public function user_switch_stop(): RedirectResponse
+	{
+		if ($id = Session::pull('orig_user')) {
+			$uo = User::find($id);
+			Auth::login($uo);
+		}
+
+		return Redirect::to(self::redirect);
+	}
+}