<?php

// array to hold validation errors
$errors = [];

// array to pass back data
$data = [];

// validate the variables
// if any of these variables don't exist, add an error to our $errors array
if (empty($_POST['app_name']))
    $errors['app_name'] = 'App Name is required.';

if (empty($_POST['app_url']))
    $errors['app_url'] = 'App Url is required.';

if (empty($_POST['app_currency']))
    $errors['app_currency'] = 'The application currency is required.';

if (empty($_POST['app_locale']))
    $errors['app_locale'] = 'Please select a locale for the application.';

if (empty($_POST['app_timezone']))
    $errors['app_timezone'] = 'The application timezone is required.';

if (empty($_POST['host_name']))
    $errors['host_name'] = 'Host Name is required.';

if (empty($_POST['port_name']))
    $errors['port_name'] = 'Port Name is required.';

if (preg_match('/\s/', $_POST['app_url']))
    $errors['app_url_space'] = 'There should be no space in App URL ';

if (preg_match('/\s/', $_POST['app_name']))
    $errors['app_name_space'] = 'There should be no space in App Name.';

if (preg_match('/\s/', $_POST['host_name']))
    $errors['host_name_space'] = 'There should be no space in Host Name.';

if (preg_match('/\s/', $_POST['database_name']))
    $errors['database_name_space'] = 'There should be no space in Database Name.';

if (preg_match('/\s/', $_POST['database_prefix']))
    $errors['database_prefix_space'] = 'There should be no space in Database Prefix.';

if (preg_match('/\s/', $_POST['user_name']))
    $errors['user_name_space'] = 'There should be no space in User Name.';

if (preg_match('/\s/', $_POST['user_password']))
    $errors['user_password_space'] = 'There should be no space in User Password.';

if (preg_match('/\s/', $_POST['port_name']))
    $errors['port_name_space'] = 'There should be no space in Port Name.';

// return a response
// if there are any errors in our errors array, return a success boolean of false

if (! empty($errors)) {
    // if there are items in our errors array, return those errors
    $data['success'] = false;
    $data['errors']  = $errors;
} else {
    // if there are no errors process our form, then return a message
    // getting env file location
    $location = str_replace('\\', '/', getcwd());
    $currentLocation = explode("/", $location);
    array_pop($currentLocation);
    array_pop($currentLocation);
    $desiredLocation = implode("/", $currentLocation);
    $envFile = $desiredLocation . '/' . '.env';

    $envExampleFile = $desiredLocation . '/' . '.env.example';

    if (! file_exists($envFile)) {
        if (file_exists($envExampleFile)) {
            copy($envExampleFile, $envFile);
        } else {
            touch($envFile);
        }
    }

    // reading env content
    $data = file($envFile);
    $keyValueData = [];

    if ($data) {
        foreach ($data as $line) {
            $line = preg_replace('/\s+/', '', $line);
            $rowValues = explode('=', $line);

            if (strlen($line) !== 0) {
                $keyValueData[$rowValues[0]] = $rowValues[1];
            }
        }
    }

    // inserting form data to empty array
    $keyValueData['DB_HOST'] = $_POST["host_name"];
    $keyValueData['DB_DATABASE'] = $_POST["database_name"];
    $keyValueData['DB_PREFIX'] = $_POST["database_prefix"];
    $keyValueData['DB_USERNAME'] = $_POST["user_name"];
    $keyValueData['DB_PASSWORD'] = $_POST["user_password"];
    $keyValueData['APP_NAME'] = $_POST["app_name"];
    $keyValueData['APP_URL'] = $_POST["app_url"];
    $keyValueData['APP_CURRENCY'] = $_POST["app_currency"];
    $keyValueData['APP_LOCALE'] = $_POST["app_locale"];
    $keyValueData['APP_TIMEZONE'] = $_POST["app_timezone"];
    $keyValueData['DB_CONNECTION'] = $_POST["database_connection"];
    $keyValueData['DB_PORT'] = $_POST["port_name"];

    // making key/value pair with form-data for env
    $changedData = [];
    foreach ($keyValueData as $key => $value) {
        $changedData[] = $key . '=' . $value;
    }

    // inserting new form-data to env
    $changedData = implode(PHP_EOL, $changedData);
    file_put_contents($envFile, $changedData);

    // checking database connection(mysql only)
    if ($_POST["database_connection"] == 'mysql') {
        // create connection
        @$conn = new mysqli($_POST["host_name"], $_POST["user_name"], $_POST["user_password"], $_POST["database_name"], $_POST['port_name']);

        // check connection
        if ($conn->connect_error) {
            $errors['database_error'] = $conn->connect_error;
            $data['errors'] = $errors;
            $data['success'] = false;
        } else {
            $data['success'] = true;
            $data['message'] = 'Success!';
        }
    } else {
        $data['success'] = true;
        $data['message'] = 'Success!';
    }
}

// return all our data to an AJAX call
echo json_encode($data);