simple_feed.module

<?php

/**
 * A simple feed that outputs node/taxonomy_term information in json format
 *
 * I have included some redundancies in the code for easier parsing, but if this
 * does become something of value, it will definitely be further optimized.
 */

/**
 * Implements hook_menu()
 */
function simple_feed_menu() {
  module_load_include('inc', 'simple_feed');
  module_load_include('inc', 'simple_feed', 'resources/db_control');

  $items = array();

  //----------------------------------------------------------------------------
  // welcome page
  $feed_dir = 'simple_feed';
  $items[$feed_dir] = array(
    'page callback' => 'simple_feed_welcome',
    'access callback' => TRUE, // expose the page to show that module is enabled
    'type' => MENU_CALLBACK,
  );
  //----------------------------------------------------------------------------
  // profile menu
  $config_dir = simple_feed_get_config_directory();

  $items[$config_dir] = array(
    'title' => t('Simple Feed'),
    'description' => t('Manage simple feed profiles.'),
    'page callback' => 'drupal_get_form',
    'page arguments' => array('simple_feed_profile_overview'),
    'access arguments' => array('administer site configuration'),
  );
  // set profiles
  $items[$config_dir . '/profiles'] = array(
    'title' => t('Profiles'),
    'weight' => 0,
    'type' => MENU_DEFAULT_LOCAL_TASK,
  );
  // set default settings
  $items[$config_dir . '/default_settings'] = array(
    'title' => t('Default Settings'),
    'description' => t('Change default settings.'),
    'page callback' => 'drupal_get_form',
    'page arguments' => array('simple_feed_default_settings_form'),
    'access arguments' => array('administer site configuration'),
    'weight' => 1,
    'type' => MENU_LOCAL_TASK,
  );
  // profile add
  $items[$config_dir . '/profiles/add'] = array(
    'title' => t('Add Profile'),
    'description' => t('Add new simple feed profile.'),
    'page callback' => 'drupal_get_form',
    'page arguments' => array('simple_feed_add_profile_form'),
    'access arguments' => array('administer site configuration'),
    'type' => MENU_LOCAL_ACTION,
  );
  // profile dependent pages
  $profiles = simple_feed_get_all_profiles();
  $profile_statuses = variable_get('simple_feed_profile_statuses');
  foreach($profiles as $p) {
    $name = $p['name'];

    // only build the feed menu item if it's enabled
    if ($profile_statuses[$name] !== 0) {
      // no titles specified because these won't be rendered as drupal pages
      //------------------------------------------------------------------------
      // welcome page
      $items[$feed_dir . '/' . $name] = array(
        'page callback' => 'simple_feed_welcome_profile',
        'page arguments' => array(1,2),
        'access callback' => 'simple_feed_access_callback',
        'access arguments' => array(1),
        'type' => MENU_CALLBACK,
      );
      //------------------------------------------------------------------------
      // summary
      $items[$feed_dir . '/' . $name . '/summary'] = array(
        'page callback' => 'simple_feed_summary',
        'page arguments' => array(1),
        'access callback' => 'simple_feed_access_callback',
        'access arguments' => array(1),
        'type' => MENU_CALLBACK,
      );
      //------------------------------------------------------------------------
      // node and nodes
      $items[$feed_dir . '/' . $name . '/node'] = array(
        'page callback' => 'simple_feed_node',
        'page arguments' => array(1,3),
        'access callback' => 'simple_feed_access_callback',
        'access arguments' => array(1),
        'type' => MENU_CALLBACK,
      );
      $items[$feed_dir . '/' . $name . '/nodes'] = array(
        'page callback' => 'simple_feed_nodes',
        'page arguments' => array(1,3),
        'access callback' => 'simple_feed_access_callback',
        'access arguments' => array(1),
        'type' => MENU_CALLBACK,
      );
      //------------------------------------------------------------------------
      // taxonomy term and terms
      $items[$feed_dir . '/' . $name . '/taxonomy_term'] = array(
        'page callback' => 'simple_feed_taxonomy_term',
        'page arguments' => array(1,3),
        'access callback' => 'simple_feed_access_callback',
        'access arguments' => array(1),
        'type' => MENU_CALLBACK,
      );
      $items[$feed_dir . '/' . $name . '/taxonomy_terms'] = array(
        'page callback' => 'simple_feed_taxonomy_terms',
        'page arguments' => array(1,3),
        'access callback' => 'simple_feed_access_callback',
        'access arguments' => array(1),
        'type' => MENU_CALLBACK,
      );
    }
    //--------------------------------------------------------------------------
    // Configuration
    $items[$config_dir . '/profiles/list/' . $p['name']] = array(
      'title' => t('Configure Profile'),
      'description' => t('Configure an existing simple feed profile.'),
      'page callback' => 'drupal_get_form',
      'page arguments' => array('simple_feed_config_profile_form', 6),
      'access arguments' => array('administer site configuration'),
    );
    // Delete
    $items[$config_dir . '/profiles/list/' . $p['name'] . '/delete'] = array(
      'title' => t('Delete Profile'),
      'description' => t('Delete an existing simple feed profile.'),
      'page callback' => 'drupal_get_form',
      'page arguments' => array('simple_feed_delete_profile_form', 6),
      'access arguments' => array('administer site configuration'),
    );
  }

  return $items;
}

//------------------------------------------------------------------------------
// Configuration callbacks, will return fetched forms

/**
 * Profile overview form
 */
function simple_feed_profile_overview() {
  module_load_include('inc', 'simple_feed', 'config/config_forms');
  return simple_feed_get_profile_overview();
}

/**
 * Default settings form
 */
function simple_feed_default_settings_form() {
  module_load_include('inc', 'simple_feed', 'config/config_forms');
  return simple_feed_get_default_settings_form();
}

/**
 * Add profile form
 */
function simple_feed_add_profile_form($form, &$form_state) {
  module_load_include('inc', 'simple_feed', 'config/config_forms');
  return simple_feed_get_add_profile_form();
}

/**
 * Configure profile form
 */
function simple_feed_config_profile_form($form, &$form_state, $profile) {
  module_load_include('inc', 'simple_feed', 'config/config_forms');
  return simple_feed_get_config_profile_form($profile);
}

/**
 * Delete profile form
 */
function simple_feed_delete_profile_form($form, &$form_state, $profile) {
  module_load_include('inc', 'simple_feed', 'config/config_forms');
  return simple_feed_get_delete_profile_form($profile);
}

//------------------------------------------------------------------------------
// Endpoint callbacks, will send json to client

/**
 * Welcome json for profile callback
 */
function simple_feed_welcome_profile($profile, $endpoint) {
  module_load_include('inc', 'simple_feed', 'endpoints/welcome');
  simple_feed_get_welcome_profile($profile, $endpoint);
}

/**
 * Summary Listing menu callback
 */
function simple_feed_summary($profile) {
  module_load_include('inc', 'simple_feed', 'endpoints/summary');
  simple_feed_get_summary($profile);
}

/**
 * Node menu callback
 */
function simple_feed_node($profile, $id=NULL) {
  module_load_include('inc', 'simple_feed', 'endpoints/node');
  simple_feed_get_node($profile, $id);
}

/**
 * Nodes menu callback
 */
function simple_feed_nodes($profile, $id=NULL) {
  module_load_include('inc', 'simple_feed', 'endpoints/nodes');
  simple_feed_get_nodes($profile, $id);
}

/**
 * Taxonomy Term menu callback
 */
function simple_feed_taxonomy_term($profile, $id=NULL) {
  module_load_include('inc', 'simple_feed', 'endpoints/taxonomy_term');
  simple_feed_get_taxonomy_term($profile, $id);
}

/**
 * Taxonomy Terms menu callback
 */
function simple_feed_taxonomy_terms($profile, $id=NULL) {
  module_load_include('inc', 'simple_feed', 'endpoints/taxonomy_terms');
  simple_feed_get_taxonomy_terms($profile, $id);
}

//------------------------------------------------------------------------------
// Access Callback

function simple_feed_access_callback($profile) {
  module_load_include('inc', 'simple_feed', 'security/verify_access');
  return simple_feed_verify_access($profile);
}

//------------------------------------------------------------------------------
// Misc. page callbacks

/**
 * Implements hook_help()
 */
function simple_feed_help($path, $arg) {
  module_load_include('inc', 'simple_feed');
  $config_dir = simple_feed_get_config_directory();
  switch ($path) {
    case $config_dir:
      $msg = 'Manage your feed profiles below.<br>'
           . 'Profile has to be enabled first (checkbox) to be functional.';
      return '<p>'.t($msg).'</p>';
    case $config_dir.'/default_settings':
      $msg = 'Change default settings here.<br>';
      return '<p>'.t($msg).'</p>';
  }
}

/**
 * Welcome message menu callback
 */
function simple_feed_welcome($param=NULL) {
  $GLOBALS['devel_shutdown'] = FALSE; // suppressing devel output
  if ($param === NULL) {
    http_response_code(200);
    echo t("Simple Feed module has been enabled successfully!");
  } else {
    http_response_code(404);
    echo t("Simple Feed profile not found. ")."(/simple_feed/$param)";
  }
  exit();
}