Where-in-the-World-is-Ben/routes/web.php

<?php

use GuzzleHttp\Client;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Route;
use Illuminate\Support\Facades\Storage;

Route::get('/past-trips', function () {
    return view('past-trips');
});

Route::get('/{tripId?}', function (Request $request, $tripId = null) {
    if (!$tripId && !config('app.current_trip_id')) return view('no-trip');

    $viewMode = $request->input('show', null);

    /*
     * If there is a file in the local cache that is less than 3 hours old,
     * use that.
     */
    $tripFileName = ( $tripId ?? config('app.current_trip_id') ) . '.json';
    if (Storage::disk('local')->exists($tripFileName)) {
        $cachedData = json_decode(Storage::disk('local')->get($tripFileName));
        if ($cachedData->trip->is_active) {
            $cachedDataUpdatedAt = new DateTime($cachedData->trip->updated_at);
            $now = new DateTime();
            if (intval(($now->getTimestamp() - $cachedDataUpdatedAt->getTimestamp()) / 3600) <= 3) {
                return view('tracker', ['trip' => $cachedData->trip, 'showAllCheckins' => ($viewMode === 'all')]);
            }
        } else {
            return view('tracker', ['trip' => $cachedData->trip, 'showAllCheckins' => ($viewMode === 'all')]);
        }
    }

    /*
     * Otherwise, download the latest tracking data.
     */
    $client = new Client([
        'base_uri' => 'https://app.wayward.travel/',
        'timeout' => 3.0
    ]);
    $response = $client->get('trip/'.($tripId ?? config('app.current_trip_id')).'/user/zmld8ko6qy7d9j3xvq10/json');

    if ($response->getStatusCode() == 200) {
        $data = json_decode($response->getBody());

        // Cache the downloaded file if it does not exist locally.
        if (Storage::disk('local')->missing($tripFileName)) {
            Storage::disk('local')->put($tripFileName, json_encode($data));
        } else {
            $cachedData = json_decode(Storage::disk('local')->get($tripFileName));
            if ($data->trip->updated_at !== $cachedData->trip->updated_at) {
                Storage::disk('local')->put($tripFileName, json_encode($data));
                // TODO: Cache photos locally
            } else {
                $data = $cachedData;
            }
        }

        return view('tracker', ['trip' => $data->trip, 'showAllCheckins' => ($viewMode === 'all')]);
    } else {
        return 'Something went wrong';
    }
})->where('tripId', '[0-9a-z]{20}');