launch iterably wip

poc_feature_flag_loader_from_file.php

<?php
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\File;
use Illuminate\Support\Str;
use Illuminate\Support\Facades\Config;

// get data from an api that uses basic auth then decode it as a .env file
function get_features($url, $creds, $segment = []) {
  $ch = curl_init($url);
  curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/xml', $additionalHeaders));
  curl_setopt($ch, CURLOPT_HEADER, 1);

  curl_setopt($ch, CURLOPT_USERPWD, $creds['username'] . ":" . $creds['password']);
  curl_setopt($ch, CURLOPT_TIMEOUT, 30);
  curl_setopt($ch, CURLOPT_POST, 1);
  // $segment is the customer segment you want this feature to be enabled for ie ['premium' => true]
  if(!empty($segment)) {
     curl_setopt($ch, CURLOPT_POSTFIELDS, $segment);
  }
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
  $return = curl_exec($ch);
 // Split response into header and body
  list($headers, $body) = explode("\r\n\r\n", $return, 2);

  curl_close($ch);
  
  return base64_decode($body); //returns you the feature flags enabled in the API for the customer segment or else its a global feature flag
}

$url = env('feature_flag_api_endpoint');
$creds = [
    env('LI_AUTH_USERNAME'),
    env('LI_AUTH_PASSWORD')
];

$featureCache = Cache::rememberForever('features', function () use ($url, $creds) {
     return get_features($url, $creds); //base64_encoded string that decodes to a .env format ie KEY=PAIR
});

$features = explode(PHP_EOL, $featureCache); // ensures cross-platform \r\n or \n only compatibility

foreach ($features as $feat) {
    // Extract key-value pair
    list($key, $value) = explode('=', $feat, 2);
    // Sanitize key (optional)
    $key = Str::upper(str_replace(' ', '_', $key)); 
    // Store in config
    Config::set('li.' . $key, $value);
}
echo "Environment feature flag variables stored in config.\n";

// Note: Retrieving the value
// $value = Config::get('li.' . $key);