/**
* Handles Installation Steps and Calculates Installation Progress Bar
*
* Procedure Notice:
* If a STEP is successful,
* proceed to the next, else return to the same STEP and display error.
*/
public function determineCurrentStep()
{
// update the session with the given variables!
$_SESSION = Helper::array_merge_rec($_POST, $_SESSION);
/**
* STEP HANDLING
*/
if (isset($_SESSION['step']) === true) {
$this->step = intval($_SESSION['step']);
if (isset($_POST['step_forward']) === true and $this->step == $_POST['submitted_step']) {
$this->step = $this->step + 1;
}
if (isset($_POST['step_backward']) === true and $this->step == $_POST['submitted_step']) {
$this->step = $this->step - 1;
}
} else {
$this->step = 1;
}
if ($this->step >= $this->total_steps) {
$this->step = $this->total_steps;
}
if ($this->step == 0) {
$this->step = 1;
}
// remove not needed values
unset($_SESSION['step_forward'], $_SESSION['step_backward'], $_SESSION['submitted_step']);
}
