<?php

/**
 * @file
 * Drupal hooks implementations and module specific functions.
 */

/**
 * Implements hook_menu().
 */
function taxonomy_tools_copier_menu() {
  $items['admin/config/taxonomy-tools/copier'] = array(
    'title' => 'Taxonomy Copier',
    'description' => 'Configure Taxonomy Copier settings.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('taxonomy_tools_copier_admin_form'),
    'access arguments' => array('access administration pages'),
    'file' => 'taxonomy_tools_copier.admin.inc',
    'file path' => drupal_get_path('module', 'taxonomy_tools_copier'),
  );
  $items['admin/structure/taxonomy/%taxonomy_vocabulary_machine_name/copy/%'] = array(
    'title callback' => 'taxonomy_tools_copier_title_callback',
    'title arguments' => array(5),
    'description' => 'Taxonomy copier term copying form.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('taxonomy_tools_copier_copy_form', 3, 5),
    'file' => 'taxonomy_tools_copier.admin.inc',
    'file path' => drupal_get_path('module', 'taxonomy_tools_copier'),
    'access arguments' => array('use taxonomy copier'),
  );
  $items['taxonomy-copier/%/nodes/%'] = array(
    'title' => 'Term nodes',
    'type' => MENU_CALLBACK,
    'page callback' => 'taxonomy_tools_copier_nodes_ajax',
    'page arguments' => array(1, 3),
    'file' => 'taxonomy_tools_copier.admin.inc',
    'file path' => drupal_get_path('module', 'taxonomy_tools_copier'),
    'access arguments' => array('use taxonomy copier'),
  );
  $items['taxonomy/term/%taxonomy_term/copy'] = array(
    'title' => 'Copy',
    'description' => 'Taxonomy copier term copying form.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('taxonomy_tools_copier_copy_form', NULL, 2),
    'file' => 'taxonomy_tools_copier.admin.inc',
    'file path' => drupal_get_path('module', 'taxonomy_tools_copier'),
    'access arguments' => array('use taxonomy copier'),
    'type' => MENU_LOCAL_TASK,
    'weight' => 49,
  );
  return $items;
}

/**
 * Returns the title for taxonomy term copying form.
 *
 * @param int $tid
 *   Taxonomy term object or identificator.
 *
 * @return string
 *   Title for the form.
 */
function taxonomy_tools_copier_title_callback($tid) {
  $query = db_select('taxonomy_term_data', 'foo');
  $query->addField('foo', 'name');
  $query->condition('foo.tid', $tid);
  $result = $query->execute()->fetchField();
  $title = t('Copy taxonomy terms of @name branch', array('@name' => $result));
  return $title;
}

/**
 * Implements hook_theme().
 */
function taxonomy_tools_copier_theme() {
  return array(
    'taxonomy_tools_copier_nodes_container' => array(
      'render element' => 'container',
    ),
    'taxonomy_tools_copier_nodes_list_container' => array(
      'render element' => 'container',
    ),
  );
}

/**
 * Implements hook_admin_paths().
 */
function taxonomy_tools_copier_admin_paths() {
  $paths = array(
    'taxonomy-copier/*' => TRUE,
  );
  return $paths;
}

/**
 * Implements hook_taxonomy_tools_overview_links().
 */
function taxonomy_tools_copier_taxonomy_tools_overview_links($tid) {
  $links = array();
  $term = taxonomy_term_load($tid);
  $destination = drupal_get_destination();
  $links['copy'] = array(
    '#type' => 'link',
    '#title' => '',
    '#href' => 'admin/structure/taxonomy/' . $term->vocabulary_machine_name . '/copy/' . $term->tid,
    '#attributes' => array(
      'class' => array(
        'copy-term',
      ),
      'title' => t('copy'),
    ),
    '#options' => array(
      'query' => array(
        'destination' => $destination['destination'],
      ),
    ),
    '#access' => user_access('use taxonomy copier'),
  );
  return $links;
}

/**
 * Implements hook_permission().
 */
function taxonomy_tools_copier_permission() {
  return array(
    'use taxonomy copier' => array(
      'title' => t('Use Taxonomy Copier'),
      'description' => t('Allows the user to make copies of existing taxonomy terms.'),
    ),
  );
}