<?php

/**
 * @file
 * Main file for the Save Draft module, which adds a 'Save as draft' button to content types.
 */

/**
 * Implements hook_permission().
 */
function save_draft_permission() {
  return array(
    'save draft' => array(
      'title' => t('Save content as draft'),
      'description' => t('Allows a user to save a draft of their content.'),
    ),
  );
}

/**
 * Implements hook_form_FORM_ID_alter().
 */
function save_draft_form_node_form_alter(&$form, &$form_state) {
  if (user_access('save draft')) {
    $form['options']['#title'] = t('Promotion settings');
    $form['options']['#attributes']['class'] = array('node-promotion-options');
    $form['options']['#attached'] = array(
      'js' => array(
        'vertical-tabs' => drupal_get_path('module', 'save_draft') . '/save_draft.js',
      ),
    );
    $form['options']['status'] = false;
    if (empty($form['#validate'])) {
      $form['#validate'] = array();
    }
    array_unshift($form['#validate'], 'save_draft_validate');
    if (isset($form['nid']['#value'])) {
      if ($form['#node']->status == 1) {
        $form['actions']['draft'] = array(
          '#type' => 'submit',
          '#class' => 'form-submit',
          '#value' => t('Unpublish'),
          '#weight' => '9',
          '#submit' => array('save_draft_submit')
        );
        $form['actions']['submit']['#value'] = t('Save');
      }
      else {
        $form['actions']['draft'] = array(
          '#type' => 'submit',
          '#class' => 'form-submit',
          '#value' => t('Save'),
          '#weight' => '0',
          '#submit' => array('save_draft_submit')
        );
        $form['actions']['submit']['#value'] = t('Publish');
      }
    }
    else {
      $form['actions']['draft'] = array(
        '#type' => 'submit',
        '#class' => 'form-submit',
        '#value' => t('Save as draft'),
        '#weight' => '9',
        '#submit' => array('save_draft_submit')
      );
      $form['actions']['submit']['#value'] = t('Publish');
    }
  }
}

/**
 * Handles save draft form validation
 */
function save_draft_validate($form, &$form_state) {
  // Set the node to be published or unpublished depending on which button was
  // clicked.
  if ($form_state['triggering_element']['#value'] == $form['actions']['draft']['#value']) {
    $form_state['values']['status'] = 0;
  }
  elseif ($form_state['triggering_element']['#value'] == $form['actions']['submit']['#value']) {
    $form_state['values']['status'] = 1;
  }
}

/**
 * Handles save draft form submission
 */
function save_draft_submit($form, &$form_state) {
  node_form_submit($form, $form_state);
}