<?php

/**
 * @file social_share.networks.inc
 */

/**
 * Form callback: Social network tabledrag form.
 */
function social_share_admin_networks($form, &$form_state) {
  $networks = social_share_available_networks();

  $form['networks']['#tree'] = TRUE;

  foreach ($networks as $network) {
    $form['networks'][$network['machine_name']] = array(
      'human_name' => array(
        '#markup' => $network['human_name'],
      ),
      'url' => array(
        '#markup' => $network['url'],
      ),
      'edit' => array(
        '#markup' => l('Edit', 'admin/config/content/social-share/networks/' . $network['machine_name'] .'/edit'),
      ),
    );

    if (!$network['locked']) {
      $form['networks'][$network['machine_name']]['remove'] = array(
        '#markup' => l('Remove', 'admin/config/content/social-share/networks/' . $network['machine_name'] .'/remove'),
      );
    }

    $form['networks'][$network['machine_name']]['weight'] = array(
      '#type'          => 'weight',
      '#title'         => t('Weight'),
      '#default_value' => $network['weight'],
      '#delta'         => 20,
      '#title_display' => 'invisible',
    );
  }

  $form['actions'] = array('#type' => 'actions');

  $form['actions']['submit'] = array(
    '#type'   => 'submit',
    '#value'  => t('Save Changes'),
    '#submit' => array('social_share_admin_networks_submit'),
  );

  $form['actions']['add_network'] = array(
    '#markup' => l('Add Social Network', 'admin/config/content/social-share/networks/new',
      array(
        'attributes' => array(
          'class' => array(
            'button'
          )
        )
      )
    ),
  );


  return $form;
}

/**
 * Submit handler for social network tabledrag form.
 */
function social_share_admin_networks_submit($form, &$form_state) {
  $values = $form_state['values']['networks'];
  foreach($values as $machine_name => $weight) {
    db_update('social_share_networks')
      ->condition('machine_name', $machine_name, '=')
      ->fields($weight)
      ->execute();
  }

  social_share_update_network_order();

  drupal_set_message('Your changes have been saved.');
}

/**
 * Helper function to reorder enabled networks for block and all node types
 */
function social_share_update_network_order() {
  $available_networks = social_share_available_networks();

  // Update network order by newly saved weight values for block, if enabled:
  if (variable_get('social_share_block', 0)) {
    $block_settings = variable_get('social_share_block_settings', array());
    $new_order = array();
    foreach ($available_networks as $available_network) {
      $new_order[$available_network['machine_name']] = $block_settings['social_share_networks'][$available_network['machine_name']];
    }
    $block_settings['social_share_networks'] = $new_order;
    variable_set('social_share_block_settings', $block_settings);
  }

  $node_types = array_keys(node_type_get_types());
  foreach ($node_types as $type) {
    if ($networks = variable_get('social_share_networks_' . $type, FALSE)) {
      $new_order = array();
      foreach ($available_networks as $available_network) {
        if (in_array($available_network['machine_name'], $networks)) {
          $new_order[] = $available_network['machine_name'];
        }
      }
      variable_set('social_share_networks_' . $type, $new_order);
    }
  }
}

/**
 * Callback function for verifying whether a machine name exists or not.
 */
function social_share_check_machine_name($name) {
  if (social_share_get_network($name)) {
    return TRUE;
  }
  return FALSE;
}

/**
 * Form callback for social network add/edit form.
 */
function social_share_admin_networks_network($form, &$form_state, $machine_name = NULL) {
  if ($machine_name) {
    $network = social_share_get_network($machine_name);
    $form['new'] = array(
      '#type'  => 'hidden',
      '#value' => FALSE,
    );
  }
  else {
    $form['new'] = array(
      '#type'  => 'hidden',
      '#value' => TRUE,
    );
  }

  $form += array(
    'human_name' => array(
      '#type'          => 'textfield',
      '#title'         => t('Name'),
      '#default_value' => isset($network['human_name']) ? $network['human_name'] : '',
      '#maxlength'     => 255,
      '#required'      => TRUE,
    ),
    'machine_name' => array(
      '#type'          => 'machine_name',
      '#default_value' => isset($network['machine_name']) ? $network['machine_name'] : '',
      '#disabled'      => (isset($network['locked']) && $network['locked']) ? TRUE : FALSE,
      '#maxlength'     => 255,
      '#required'      => TRUE,
      '#title_display' => 'invisible',
      '#machine_name'  => array(
        'exists' => 'social_share_check_machine_name',
        'source' => array('human_name'),
        'label'  => '',
      ),
    ),
    'url' => array(
      '#type'          => 'textfield',
      '#title'         => t('URL'),
      '#default_value' => isset($network['url']) ? $network['url'] : '',
      '#size'          => 100,
      '#required'      => TRUE,
      '#description'   => t('Provide the share url for this network.') .
                          '<br />' .
                          t('These are the only valid placeholders: !placeholders', array(
                            '!placeholders' =>
                            theme('item_list', array('items' => array(
                              '<em>%TITLE%</em>  --  ' . t('Title of page, node, etc'),
                              '<em>%DESC%</em>  --  ' . t('Node body, description, etc (Note: most social networks ignore this)'),
                              '<em>%URL%</em>  --  ' . t('URL being shared (Note: This is _REQUIRED_ for all social networks)'),
                              '<em>%IMAGE%</em>  --  ' . t('URL of image to share (Note: Very few networks accept this, most parse the page content to find images. Pinterest is a notable exception.)'),
                            )))
                          )),
    ),
  );

  $form['actions'] = array('#type' => 'actions');

  $form['actions']['submit'] = array(
    '#type'   => 'submit',
    '#value'  => t('Save Changes'),
    '#submit' => array('social_share_admin_networks_network_submit'),
  );

  return $form;
}

/**
 * Submit handler for social network add/edit form.
 */
function social_share_admin_networks_network_submit($form, &$form_state) {
  $values = $form_state['values'];

  if (!$values['new']) {
    db_update('social_share_networks')
      ->condition('machine_name', $values['machine_name'], '=')
      ->fields(array(
        'human_name' => $values['human_name'],
        'machine_name' => $values['machine_name'],
        'url' => $values['url']
        ))
      ->execute();

    social_share_update_network_order();

    drupal_set_message('Your changes have been saved.');
  }
  else {
    db_insert('social_share_networks')
      ->fields(array(
        'human_name' => $values['human_name'],
        'machine_name' => $values['machine_name'],
        'url' => $values['url']
        ))
      ->execute();

    social_share_update_network_order();

    drupal_set_message('Your new network has been added.');
  }
  drupal_goto('admin/config/content/social-share/networks');
}

/**
 * Form callback for confirmation of removal of a custom social network entry.
 */
function social_share_admin_networks_remove($form, &$form_state, $machine_name = NULL) {
  $path = 'admin/config/content/social-share/networks';
  if (!$machine_name) {
    drupal_goto($path);
  }
  $network = social_share_get_network($machine_name);

  $form['machine_name'] = array(
    '#type' => 'hidden',
    '#value' => $machine_name,
  );
  $form['human_name'] = array(
    '#type' => 'hidden',
    '#value' => $network['human_name'],
  );
  $form['#submit'] = array('social_share_admin_networks_remove_submit');

  $question = t('Are you sure you want to remove "@name"', array('@name' => $network['human_name']));

  return confirm_form($form, $question, $path, NULL, t('Remove'), NULL, 'confirm');
}

/**
 * Submit handler for social network remove confirmation form.
 */
function social_share_admin_networks_remove_submit($form, &$form_state) {
  db_delete('social_share_networks')
    ->condition('machine_name', $form_state['values']['machine_name'])
    ->execute();

  social_share_update_network_order();

  drupal_set_message(t('"@name" has been removed.', array('@name' => $form_state['values']['human_name'])));
  drupal_goto('admin/config/content/social-share/networks');
}