// After User is Initialized in your application, set the user info in Amplitude that you want to track (minimally
// the user identifier or device identifier, and of course your Amplitude App API key)
$amplitude = \Zumba\Amplitude\Amplitude::getInstance();
$amplitude->init('APIKEY', '[email protected]')
    ->setUserProperties([
        'dob' => '1980-11-04',
        'name' => 'Johnny 5'
    ])
    // Only call this once API Key and user ID or device ID is set
    ->logQueuedEvents();

// -- Meanwhile, in another part of the code... --

// Anywhere else in your application that needs to log an event
// This will even work if called before the above code initializes Amplitude!  If that is case, it will queue it
// and send the event when logQueuedEvents() is called.  If Amplitude is already initialized, this will send the event
// to Amplitude right away (only uses a queue for early-logged events)
\Zumba\Amplitude\Amplitude::getInstance()
    ->queueEvent('EVENT TYPE');

// Can pass in an array for the second parameter to set event properties
\Zumba\Amplitude\Amplitude::getInstance()
    ->queueEvent('SECOND EVENT', ['quantity' => 1, 'price' => 15.32, 'Custom Property' => 'Widgets']);

// This is a simple example to get you started, see the rest of the readme for more examples

<?php
// Stand-alone Amplitude troubleshooting script - just change APIKEY in next line
$apikey = 'APIKEY';

// Composer Autoloader - If new to composer, see https://getcomposer.org
require __DIR__ . '/vendor/autoload.php';

// Make sure if there is some error, we will see it
ini_set('display_errors', true);
error_reporting(E_ALL);

// Quick logger to display log messages - NOT for production use, this displays log message to the browser
class ChattyLogger extends \Psr\Log\AbstractLogger
{
    public function log($level, $message, array $context = [])
    {
        echo "<p><strong>".ucfirst($level).":</strong> $message<br>";
        if (!empty($context)) {
            echo '<strong>Context:</strong><br><span class="code">'.print_r($context,true).'</span>';
        }
        echo '</p>';
    }
}

$chatty = new ChattyLogger();
// Test logging an event
?>
<style>
.code {
    display: inline-block;
    border: 1px solid #a7a7a7;
    padding: 15px;
    margin: 0 5px;
    background-color: #eaeaea;
    white-space: pre;
}
p {
    padding-bottom: 5px;
    border-bottom: thin dashed gray;
}
</style>
<h1>Testing Amplitude Log Event Response</h1>
<h2>API Key: '<?= $apikey ?>'</h2>
<?php
$amplitude = new \Zumba\Amplitude\Amplitude();

// Add the chatty logger so we can see log messages
$amplitude->setLogger($chatty);

// Initialize Amplitude with the API key and a dummy test user ID
$amplitude->init($apikey, 'TEST-USER-ID');

$chatty->info('Calling $amplitude->logEvent(\'TEST EVENT\')...');

// Log a test event
$amplitude->logEvent('TEST EVENT');

$chatty->info('Done logging event');

// After your application has set up the session (for instance in your bootloader or similar), initialize Amplitude:
$amplitude = \Zumba\Amplitude\Amplitude::getInstance();
// Notice we are not setting second parameter here for user ID, we will do that below if it is available
$amplitude->init('APIKEY');

// Can use the PHP session ID, or alternatively, any unique string your application uses to track sessions
$sessionId = session_id();

// Keep track of whether we have a session or user ID
$canLogEvents = false;
if (!empty($sessionId)) {
    $amplitude->setDeviceId($sessionId);
    $canLogEvents = true;
}
// Presumes $applicationUserId set prior to this by your application
if (!empty($applicationUserId)) {
    $amplitude->setUserId($applicationUserId);
    $canLogEvents = true;
}
if (!empty($userData)) {
    // If you have other user properties, set them as well...  They will be set on the first event sent to Amplitude
    $amplitude->setUserProperties($userData);
}

if ($canLogEvents) {
    // Make sure to send any events that may have gotten queued early
    $amplitude->logQueuedEvents();
} else {
    // Do not have a user ID or device ID for this page load, so set `optOut`, to prevent amplitude from trying
    // to send events (since it won't work without user or device ID)
    $amplitude->setOptOut(true);
}

// -- Meanwhile, in another part of the code... --

// Just queue events as normal
\Zumba\Amplitude\Amplitude::getInstance()->queueEvent('EVENT');

\Zumba\Amplitude\Amplitude::getInstance()
    ->setUserProperties(
        [
            'name' => 'Jane',
            'dob' => $dob,
            // ...
        ]
    );

$event = new \Zumba\Amplitude\Event();
// Method 1 - set user properties method:
$event->setUserProperties(
    [
        'name' => 'Rambo',
        // ...
    ]
);
// If you called setUserProperties() a second time, it would overwrite any properties with the same name but leave
// others intact

// Method 2 - just set the userProperties directly:
$event->userProperties = [
    'name' => 'Mary',
    // ...
];
// This works just like you would expect: it will reset what is already there.
// Note that prior to anything being set, $event->userProperties will be null, not an empty array

// Here, we are not using Singleton as we will only use this connection to send these batch user events, we don't
// want any user data from the Singleton instance to accidentally bleed into the first user's event
$amplitude = new \Zumba\Amplitude\Amlitude();
// Alternatively, if we wanted to re-use the same Amplitude object with the same key elsewhere in the code, could
// have used:
// $amplitude = \Zumba\Amplitude\Amplitude::getInstance('NAMED-INSTANCE');
// That will maintain the same Amplitude instance anywhere that requests that specific name.
$amplitude->init('APIKEY');
// $userEvents might be an array your application generates with user info and events that need to be sent
foreach ($userEvents as $myUserEvent) {
    $event = $amplitude->event();
    // Notice below we are setting user ID and user data on the event itself, not inside Amplitude where it would end
    // up persisting the user ID between logged events...

    // The below assumes an array set like so:
    /*
    $myUserEvent = [
        'id' => 'user-id',
        'user_details' => [], // key/value array of user info
        'event_type' => 'EVENT', // event to log
        'event_properties' => [], // key/value array of event properties to set
    ];
     */
    $event->userId = $myUserEvent['id'];
    $event->userProperties = $myUserEvent['user_details'];
    $event->eventType = $myUserEvent['event_type'];
    $event->set($myUserEvent['event_properties']);
    // Since we used $amplitude->event() to get event object, it will be the event to be sent when we call this
    $amplitude->logEvent();
    // Above we are using logEvent instead of queueEvent since the code is not "spread out", we can ensure that
    // amplitude is already initialized and all the requirements (eventType and either userId or deviceId) are set
    // on the event already
}

// Send just event with no event properties:
\Zumba\Amplitude\Amplitude::getInstance()
    ->queueEvent('EVENT-NAME');

// Send event and add a property:
\Zumba\Amplitude\Amplitude::getInstance()
    ->queueEvent('EVENT-NAME', ['property1' => 'value1']);

// Get the next event that will be queued or sent:
$event = \Zumba\Amplitude\Amplitude::getInstance()->event();

// Set up the event here, by setting properties...
$event->eventType = 'EVENT-NAME';

// Queue or send the event - since we got the event using the event method, it will be the one used on the next
// queue or send, no need to pass it back in.
\Zumba\Amplitude\Amplitude::getInstance()->queueEvent();

// First, probably the most common, you can use the magic set methods to just set the property like this:
$event->propertyName = 'property value';

// Set using set(), handy for property names that are invalid as PHP variables:
$event->set('Property name with Space', 'property value');

// Set can be chained:
$event->set('prop1', 'val1')
    ->set('prop2', 'val2')
    ->set('prop3', 'val3');

// Pass in array of properties for the first parameter:
$event->set(
    [
        'prop1' => 'val1',
        'prop2' => 'val2',
    ]
);

// For non-standard property names, use the unsetProperty method:
$event->unsetProperty('My Location');

// Magic unset also works
unset($event->productId);

$event = new \Zumba\Amplitude\Event();

// Set event properties here

// Pass the event into amplitude and queue it
\Zumba\Amplitude\Amplitude::getInstance()
    ->event($event)
    ->queueEvent();

$event = \Zumba\Amplitude\Amplitude::getInstance()->event();

// Set event properties here

// Send that event
\Zumba\Amplitude\Amplitude::getInstance()->queueEvent();

$event = \Zumba\Amplitude\Amplitude::getInstance()->event();
$event->eventType = 'Complicated Event';

// -- Meanwhile, in another part of the code... --
// As long as the event has not yet been sent or queued up, you can get it and change it as needed:
$event = \Zumba\Amplitude\Amplitude::getInstance()->event();
$event->deviceId = 'DEVICE ID';

// Just remember, once finished setting up the event, call queueEvent() or logEvent() once.
\Zumba\Amplitude\Amplitude::getInstance()->queueEvent();

// Either set it this way:
$event->eventType = 'EVENT';

// OR set it when logging/queuing the event:
\Zumba\Amplitude\Amplitude::getInstance()
    ->queueEvent('EVENT');

$amplitude = \Zumba\Amplitude\Amplitude::getInstance()
    ->init('APIKEY');
foreach ($eventFactory->getEvents() as $event) {
    $amplitude->event($event)
        ->queueEvent();
}

// Convenience way to quickly add properties to an event, just pass in array of properties to the event method:
\Zumba\Zumba\Amplitude::getInstance()->event(
    [
        'eventProp' => 'Event Value',
        'productId' => 'acme-widget-45',
        'price' => 15.32,
    ]
);

// The above is equivalent to:
$event = \Zumba\Zumba\Amplitude::getInstance()->event();
$event->set(
    [
        'eventProp' => 'Event Value',
        'productId' => 'acme-widget-45',
        'price' => 15.32,
    ]
);