<?php

/**
 * @file
 * Provides additional buttons for content in user context.
 * 
 * Currently available context:
 * - User account
 *
 * Currently available buttons:
 * - Cancel
 * - Save and Continue
 * - Save and create new
 *
 * The "Save and create new" button is only usable for users wth the permission "Administer users".
 */

/**
 * Implements hook_permission().
 */
function mb_user_permission() {
  return array(
    'access mb user' =>  array(
      'title' => t('Use More User Buttons'),
      'description' => t('Use the buttons defined by More Buttons User.')
    )
  );
}

/**
 * Implements hook_menu().
 */
function mb_user_menu() {
  $items = array();

  $items['admin/config/mb/buttons/more-buttons-user'] = array(
    'page callback' => 'drupal_get_form',
    'page arguments' => array('mb_user_admin'),
    'title' => 'Users',
    'access arguments' => array('administer site configuration'),
    'description' => 'An overview of what page types uses buttons of the MB User module.',
    'file' => 'mb_user.admin.inc',
    'type' => MENU_LOCAL_TASK,
    'weight' => 11
  );
  $items['admin/config/mb/buttons/more-buttons-user/reset'] = array(
    'page callback' => 'drupal_get_form',
    'page arguments' => array('mb_user_reset'),
    'access arguments' => array('administer site configuration'),
    'type' => MENU_CALLBACK,
    'file' => 'mb_user.admin.inc'
  );

  return $items;
}

/**
 * Implements hook_theme().
 */
function mb_user_theme() {
  return array(
    'mb_user_admin' => array(
      'variables' => array('form' => NULL),
    )
  );
}

/**
 * Implements hook_form_alter().
 */
function mb_user_form_alter(&$form, &$form_state, $form_id) {
  $module = 'mb_user';

  switch ($form_id) {
    case 'user_profile_form':
      $default_values = mb_default_values();
      $mb_user_values = mb_get_values('mb');

      if (!isset($form['actions']['submit']['#weight'])) {
        $form['actions']['submit']['#weight'] = 10;
      }
      if (isset($form['actions']['cancel'])) {
        $form['actions']['cancel']['#weight'] = 25;
      }

      $settings = array();
      $settings['cancel'] = variable_get($module . '_cancel_user_account', 0);
      $settings['sac'] = variable_get($module . '_sac_user_account', 0);
      $settings['sacn'] = variable_get($module . '_sacn_user_account', 0);

      // The "Cancel" form element on user account page.
      if ($settings['cancel'] > 0) {
        if ($settings['cancel'] == 1) {
          $weight_cancel = $form['actions']['submit']['#weight'] - 1;
        }
        elseif ($settings['cancel'] == 2) {
          $weight_cancel = 16;
        }

        // Define the "Cancel" form element.
        $form['actions']['cancel_mb'] = array(
          '#type' => 'submit',
          '#value' => isset($mb_user_values['cancel']) ? t('@cancel-value', array('@cancel-value' => t($mb_user_values['cancel']))) : t($default_values['cancel']),
          '#weight' => $weight_cancel,
          '#validate' => array('mb_user_cancel_validate')
        );
      }

      // The "Save and continue" form element on user account page.
      if ($settings['sac'] > 0) {
        // Left
        if ($settings['sac'] == 1) {
          $weight_sac = $form['actions']['submit']['#weight'] - 0.025;
        }
        // Right
        if ($settings['sac'] == 2) {
          $weight_sac = $form['actions']['submit']['#weight'] - 0.050;
        }
        //
        if ($settings['sac'] == 3) {
          $weight_sac = $form['actions']['submit']['#weight'] + 1.025;
        }
        //
        if ($settings['sac'] == 4) {
          $weight_sac = $form['actions']['submit']['#weight'] + 1.050;
        }
        // Define the "Save and continue" form element.
        $submit = $form['#submit'];
        $submit[] = 'mb_user_sac_submit';

        $form['actions']['sac'] = array(
          '#type' => 'submit',
          '#value' => isset($mb_user_values['sac']) ? t('@sac-value', array('@sac-value' => t($mb_user_values['sac']))) : t($default_values['sac']),
          '#weight' => $weight_sac,
          '#submit' => $submit
        );
      }

      // The "Save and create new" form element on user account page.
      if ($settings['sacn'] > 0 && user_access('administer users')) {
        //
        if ($settings['sacn'] == 1) {
          $weight_sacn = $form['actions']['submit']['#weight'] - 0.025;
        }
        //
        if ($settings['sacn'] == 2) {
          $weight_sacn = $form['actions']['submit']['#weight'] - 0.050;
        }
        //
        if ($settings['sacn'] == 3) {
          $weight_sacn = $form['actions']['submit']['#weight'] + 1.025;
        }
        //
        if ($settings['sacn'] == 4) {
          $weight_sacn = $form['actions']['submit']['#weight'] + 1.050;
        }

        // Define the "Save and create new" form element.
        $submit = $form['#submit'];
        $submit[] = 'mb_user_sacn_submit';

        $form['actions']['sacn'] = array(
          '#type' => 'submit',
          '#value' => isset($mb_user_values['sacn']) ? t('@sacn-value', array('@sacn-value' => t($mb_user_values['sacn']))) : t($default_values['sacn']),
          '#weight' => $weight_sacn,
          '#submit' => $submit
        );
      }

      break;
  }
}

/**
 * Implements hook_form_validate().
 *
 * Handle the "Cancel" button validation.
 */
function mb_user_cancel_validate($form, &$form_state) {
  // This is the cancel action. No validation required.
  mb_user_cancel_action($form, $form_state);
}

/**
 * The "Cancel" button action.
 *
 * @see mb_user_cancel_validate()
 */
function mb_user_cancel_action($form, &$form_state) {
  // Hide the error messages.
  drupal_get_messages('error');

  $redirect = 'user/' . $form['#user']->uid;

  drupal_goto($redirect);
}

/**
 * Implements hook_form_submit().
 *
 * Handle the "Save and continue" button action.
 */
function mb_user_sac_submit($form, &$form_state) {
  $redirect = 'user/' . $form['#user']->uid . '/edit';

  drupal_goto($redirect);
}

/**
 * Implements hook_form_submit().
 *
 * Handle the "Save and create new" button action.
 */
function mb_user_sacn_submit($form, &$form_state) {
  $redirect = 'admin/people/create';

  drupal_goto($redirect);
}

/**
 * Get the types of pages allowed to use more buttons.
 *
 * At the moment are only supported the user accounts.
 *
 * @return array 
 */
function mb_user_type_get_types() {
  $account = array();

  $account['type'] = 'user_account';
  $account['name'] = t('User account');

  $page_types = array('user_account' => $account);

  return $page_types;
}