<?php
/**
* Functions used by admin to manage the plugin
*
* Install, remove, and other infrequently used actions are stored here to keep
* the main plugin file small.
*
* @package    Tina-MVC
* @subpackage Tina-Core-Helpers
* @author     Francis Crossen <francis@crossen.org>
*/

/**
 * Wordpress function that installs the plugin - runs when plugin is activated or upgraded
 *
 * Install/Upgrades the Wordpress plugin. Takes settings from 'tina_mvc_app_settings_sample.php' or
 * 'tina_mvc_app_settings.php' and creates Wordpress pages and options accordingly.
 * 
 * This function will be run whenever the plugin is upgraded AFTER any saved settings
 * have been copied back to the tina-mvc. Check the $tina_mvc_upgrade_backups variable in the settings file
 *
 * You can have arbitrary code run on install by putting a function called tina_mvc_app_install in a file called
 * tina_mvc_app_install.php in the 'app_install_remove' folder
 *
 * @param boolean $upgrading set to true if function is called during plugin upgrade
 *
 * @see  tina_mvc_install()
 */
function tina_mvc_admin_install($upgrading) {
    
    global $wpdb;
    
    // find an app settings file...
    if( file_exists( WP_PLUGIN_DIR.'/tina-mvc/tina_mvc_app_settings.php' ) ) {
      include( WP_PLUGIN_DIR.'/tina-mvc/tina_mvc_app_settings.php' );
    }
    else {
      include( WP_PLUGIN_DIR.'/tina-mvc/tina_mvc_app_settings_sample.php' );
    }
    
    // for the Wordpress options
    $tina_mvc_options_pages = array();
    
    // grab the default page text.
    $post_content = get_tina_mvc_default_page_post_content();
    
    // loop through the pages....
    foreach( $tina_mvc_pages AS $p ) {
      
      // does the page exist...?
      $the_page = get_page_by_title( $p['page_title'] );
      
      if ( ! $the_page ) {
        
        // Create post object
        $_p = array();
        $_p['post_title'] = $p['page_title'];
        $_p['post_name'] = $p['page_name'];
        $_p['post_content'] = $post_content;
        $_p['post_status'] = $p['page_status'];
        $_p['post_type'] = 'page';
        $_p['post_parent'] = 0;
        $_p['comment_status'] = 'closed';
        $_p['comment_count '] = 0;
        $_p['ping_status'] = 'closed';
        $_p['post_category'] = array(1);
        
        // Insert the post into the database
        $the_page_id = wp_insert_post( $_p );
        
      }
      else {
        
        $the_page_id = $the_page->ID;
        
        //make sure the page is not trashed...
        $the_page->post_status = $p['page_status'];
        $the_page_id = wp_update_post( $the_page );
        
      }
      
      // get the page in case Wordpress messed with the page_name
      $_p = get_page( $the_page_id );
      
      // FOR the options
      $page_name = $_p->post_name;
      $page_id = $_p->ID;
      $page_data = array( 'page_title'=>$_p->post_title, 'page_name'=>$page_name, 'page_id'=>$page_id ); // handy to have them for later...
      
      $tina_mvc_options_pages[$page_name] = $page_data;
      $tina_mvc_options_pages[$page_id] = $page_data;
      
    }
    
    delete_option("tina_mvc_pages");
    add_option("tina_mvc_pages", $tina_mvc_options_pages, '', 'yes');
    
    // the default role to view...
    $_opt = $tina_mvc_default_role_to_view;    
    delete_option("tina_mvc_default_role_to_view");
    add_option("tina_mvc_default_role_to_view", $_opt, '', 'yes');
    
    // the tina_mvc_login_logout_redirect...
    $_opt = $tina_mvc_login_logout_redirect;
    delete_option("tina_mvc_login_logout_redirect");
    add_option("tina_mvc_login_logout_redirect", $_opt, '', 'yes');
    
    // the tina_mvc_logon_redirect_target...
    $_opt = $tina_mvc_logon_redirect_target;
    delete_option("tina_mvc_logon_redirect_target");
    add_option("tina_mvc_logon_redirect_target", $_opt, '', 'yes');
    
    // the tina_mvc_logout_redirect_target...
    $_opt = $tina_mvc_logout_redirect_target;
    delete_option("tina_mvc_logout_redirect_target");
    add_option("tina_mvc_logout_redirect_target", $_opt, '', 'yes');
    
    // the default capability to view...
    $_opt = $tina_mvc_default_capability_to_view;
    delete_option("tina_mvc_default_capability_to_view");
    add_option("tina_mvc_default_capability_to_view", $_opt, '', 'yes');
    
    // the reCaptcha api keys
    $_opt = $tina_mvc_recaptcha_pub_key;
    delete_option("tina_mvc_recaptcha_pub_key");
    add_option("tina_mvc_recaptcha_pub_key", $_opt, '', 'yes');
    $_opt = $tina_mvc_recaptcha_pri_key;
    delete_option("tina_mvc_recaptcha_pri_key");
    add_option("tina_mvc_recaptcha_pri_key", $_opt, '', 'yes');
    
    // the missing page controller action...
    $_opt = $tina_mvc_missing_page_controller_action;
    delete_option("tina_mvc_missing_page_controller_action");
    add_option("tina_mvc_missing_page_controller_action", $_opt, '', 'yes');
    
    // the backup list...
    delete_option("tina_mvc_upgrade_backups");
    add_option("tina_mvc_upgrade_backups", $tina_mvc_upgrade_backups, '', 'no');
    
    // bootstrap
    $_opt = $tina_mvc_enable_bootstrap_funcs;
    delete_option("tina_mvc_enable_bootstrap_funcs");
    add_option("tina_mvc_enable_bootstrap_funcs", $_opt, '', 'yes');
 
    // init bootstrap
    $_opt = $tina_mvc_enable_init_bootstrap_funcs;
    delete_option("tina_mvc_enable_init_bootstrap_funcs");
    add_option("tina_mvc_enable_init_bootstrap_funcs", $_opt, '', 'yes');
    
    // finally
    delete_option("tina_mvc_plugin_active");
    add_option("tina_mvc_plugin_active", TRUE, '', 'yes');
    
    if( file_exists( tina_mvc_find_app_install_remove_folder().'/tina_mvc_app_install.php' ) ) {
        
        include( tina_mvc_find_app_install_remove_folder().'/tina_mvc_app_install.php' );
        if( function_exists( 'tina_mvc_app_install' ) ) {
            
            tina_mvc_app_install();
            
        }
        
    }
    
}


/**
 * Wordpress function that removes the plugin - runs on deactivation
 *
 * You can have arbitrary code run on install by putting a function called tina_mvc_app_remove in a file called
 * tina_mvc_app_remove.php in the 'app_install_remove' folder
 * 
 */
function tina_mvc_admin_remove() {
    

    global $wpdb;
    
    //  the id of our pages...
    $the_pages = ( get_option( 'tina_mvc_pages' ) );
    
    if( $the_pages ) {
      
      foreach( $the_pages AS $_p ) {
        
        wp_delete_post( $_p['page_id'] );
        
      }
      
    }
    
    if( file_exists( tina_mvc_find_app_install_remove_folder().'/tina_mvc_app_remove.php' ) ) {
        
        include( tina_mvc_find_app_install_remove_folder().'/tina_mvc_app_remove.php' );
        if( function_exists( 'tina_mvc_app_remove' ) ) {
            
            tina_mvc_app_remove();
            
        }
        
    }
    
    // LEAVE OUT FOR THE MOMENT
    /*
    if( $check_init_bootstrap ) {
      $dir = tina_mvc_find_app_init_bootstrap_folder();
    }
    else {
      $dir = tina_mvc_find_app_bootstrap_folder();
    }
    $files = scandir( $dir );
    
    foreach( $files AS $f ) {
      $f = strtolower($f);
      if( !in_array( $f , array('.','..','index.php' )) AND (strpos( $f , '.php' ) !== FALSE) ) {
        
        include_once( $dir .'/'.$f );
        call_user_func( str_replace('.php','',$f) );
        
      }
      
    }
    */
    
    delete_option("tina_mvc_pages");
    delete_option("tina_mvc_default_role_to_view");
    delete_option("tina_mvc_login_logout_redirect");
    delete_option("tina_mvc_logon_redirect_target");
    delete_option("tina_mvc_logout_redirect_target");
    delete_option("tina_mvc_default_capability_to_view");
    delete_option("tina_mvc_recaptcha_pub_key");
    delete_option("tina_mvc_recaptcha_pri_key");
    delete_option("tina_mvc_missing_page_controller_action");
    delete_option("tina_mvc_enable_bootstrap_funcs");
    delete_option("tina_mvc_enable_init_bootstrap_funcs");
    
    // finally
    delete_option('tina_mvc_plugin_active');
    
}


/**
 * Generic copy utility
 *
 * Thanks to Clay Lua (http://hungred.com) for illustrating the technique
 * 
 * @param   string $source 
 * @param   string $dest 
 * @return  boolean true
 */
function hpt_copyr($source, $dest)
{
    // Check for symlinks
    if (is_link($source)) {
        return symlink(readlink($source), $dest);
    }

    // Simple copy for a file
    if (is_file($source)) {
        return copy($source, $dest);
    }

    // Make destination directory
    if (!is_dir($dest)) {
        mkdir($dest);
    }

    // Loop through the folder
    $dir = dir($source);
    while (false !== $entry = $dir->read()) {
        // Skip pointers
        if ($entry == '.' || $entry == '..') {
            continue;
        }

        // Deep copy directories
        hpt_copyr("$source/$entry", "$dest/$entry");
    }

    // Clean up
    $dir->close();
    return true;
}

/**
* Delete a file, or a folder and its contents
*
* @author Aidan Lister <aidan@php.net>
* @version 1.0.2
* @see http://putraworks.wordpress.com/2006/02/27/php-delete-a-file-or-a-folder-and-its-contents/
*
* @param string $dirname Directory to delete
* @return bool Returns TRUE on success, FALSE on failure
*/
function hpt_rmdirr($dirname) {
    // Sanity check
    if (!file_exists($dirname)) {
        return false;
    }
    
    // Simple delete for a file
    if (is_file($dirname)) {
        return unlink($dirname);
    }
    
    // Loop through the folder
    $dir = dir($dirname);
    while (false !== $entry = $dir->read()) {
        // Skip pointers
        if ($entry == '.' || $entry == '..') {
            continue;
        }
        
        // Recurse
        hpt_rmdirr("$dirname/$entry");
    }
    
    // Clean up
    $dir->close();
    return rmdir($dirname);
    
}

/**
 * Backup files before plugin upgrade
 *
 * Thanks to Clay Lua (http://hungred.com) for illustrating the technique
 *
 * @todo  move it all to the tine_mvc_admin_functions helper
 * @uses hpt_copyr()
 */
function tina_mvc_admin_hpt_backup() {
    
    // what config file are we using...?
    if( file_exists( WP_PLUGIN_DIR.'/tina-mvc/tina_mvc_app_settings.php' ) ) {
      include( WP_PLUGIN_DIR.'/tina-mvc/tina_mvc_app_settings.php' );
    }
    else {
      include( WP_PLUGIN_DIR.'/tina-mvc/tina_mvc_app_settings_sample.php' );
    }
    
    // we now have $tina_mvc_upgrade_backups set...

    if( isset($tina_mvc_upgrade_backups) AND is_array($tina_mvc_upgrade_backups) ) {
      
      // make sure that the $tina_mvc_upgrade_backups is stored in the Wordpress options... we need them later!
      if( ! get_option('tina_mvc_upgrade_backups') ) {
        add_option("tina_mvc_upgrade_backups", $tina_mvc_upgrade_backups, '', 'no');
      }      
      
      // make a folder for backup...
      $bu_fldr = WP_PLUGIN_DIR.'/../upgrade/tina_mvc_upgrade_backup';
      // try to create...
      if( ! is_dir($bu_fldr) AND ! mkdir($bu_fldr) ) {
        
        return  new WP_Error('no_permission', __('Wordpress cannot create a backup folder to keep your settings. You will have to manually upgrade Tina MVC.'). ' Tried: '.$bu_fldr );
        
      }
      else {
        
        foreach( $tina_mvc_upgrade_backups AS $item ) {
          
          if( file_exists( tina_mvc_find_plugin_folder()."/$item" ) ) {
            $result = hpt_copyr( tina_mvc_find_plugin_folder()."/$item", "$bu_fldr/$item" );  
          }
          
        }
        
      }    
      
    }    
    
}

/**
 * Recover files after plugin upgrade
 *
 * Thanks to Clay Lua (http://hungred.com) for illustrating the technique
 *
 * @uses hpt_copyr()
 * 
 */
function tina_mvc_admin_hpt_recover() {
    
    $tina_mvc_upgrade_backups = get_option('tina_mvc_upgrade_backups');
    
    // the the backup folder
    $bu_fldr = WP_PLUGIN_DIR.'/../upgrade/tina_mvc_upgrade_backup';
    
    // we now have $tina_mvc_upgrade_backups set...
    if( isset($tina_mvc_upgrade_backups) AND is_array($tina_mvc_upgrade_backups) ) {
      
      if( ! is_dir($bu_fldr) ) {
        
        return  new WP_Error('no_backup_folder', __('The backup folder doesn\'t exist. You will have to manually upgrade Tina MVC.'));
        
      }
      else {
        
        foreach( $tina_mvc_upgrade_backups AS $item ) {
          
          if( file_exists("$bu_fldr/$item") ) {
            $result = hpt_copyr( "$bu_fldr/$item", tina_mvc_find_plugin_folder()."/$item" );  
          }
          
        }
        
      }
      
      if (is_dir($bu_fldr)) {
          //    hpt_rmdirr($bu_fldr);// we'll not delete anything until we know all is well!
      }
      
      // we've perhaps copied a new settings file. run tina_mvc_install() to re-read the
      // new settings... $upgrading=true
      tina_mvc_install( true );
      
    }
    
}

/**
 * The default page/post content for a Tina MVC front end controller page. Used on plugin activation
 *
 * @return  string default page content
 */
function get_tina_mvc_default_page_post_content() {
    
    return 
    "This is a Tina MVC front end controller page.\r\n\r\n
    When the Tina MVC plugin is active this content will be overwritten.\r\n\r\n
    If Tina MVC is active, and you can read this from the public side of a Worpdress page (i.e. not from the 'Page edit' admin menu) then
    Tina MVC may have 'lost' this front end controller page (this can happen if you edit this page from within Wordpress), deactivate and reactivate Tina MVC to fix this.\r\n\r\n
    If Tina MVC has been deactivated then this becomes a 'normal' Wordpress page and therefore you can read this text.
    You can safely delete or hide it.";
    
}

?>