Cars Custom Funcrtions Plugin

<?php

/**
* Plugin Name: Cars Custom Site Plugin
* Description: Custom code functions unique to this website.
* Author: Strategy Lab
* Author URI: https://strategylab.ca/
* Version: 1.0
*/

//-- CUSTOM VEHICLE POST TYPE --//

// get vehicle taxonomies terms links
function carMetaBeforePost( $content ) {
  if ( is_singular( 'vehicles' ) ) {
    global $post;
    // the custom vehicle
    $taxonomies = array(
                        "make"=>"Make: ",
                        "models"=>"Model: ",
                        "years"=>"Year: ",
                        "transmission"=>"Transmission: ",
                        "drivetrain"=>"Drivetrain: ",
                        "interior_colour"=>"Interior Colour: ",
                        "exterior_colour"=>"Exterior Colour: ",
                  );
    $out = "<ul class='car-meta'>";
    foreach ($taxonomies as $tax => $taxname) {
        // get the terms related to post
        $terms = get_the_terms( $post->ID, $tax );
        if ( !empty( $terms ) ) {
            foreach ( $terms as $term )
            $out .= "<li class='c_".$tax."'>";
            $out .= "<span>".$taxname."</span>";
            $out .= '<a class="c_'.$term->slug.'" href="' .get_term_link($term->slug, $tax) .'">'.$term->name.'</a> ';
        }
        $out .= "</li>";
    }
      $out .= "</ul>";
      $content = $out . $content;
  }
    return $content;
}

add_action('the_content', 'carMetaBeforePost');

//-- DASHBOARD CUSTOMIZATIONS --//

// Limit member media library and post access to posts and files uploaded by that member

add_action('pre_get_posts', 'query_set_only_author' );
function query_set_only_author( $wp_query ) {
 global $current_user;
 if( is_admin() && !current_user_can('edit_others_posts') ) {
    $wp_query->set( 'author', $current_user->ID );
    add_filter('views_edit-vehicles', 'fix_post_counts');
    add_filter('views_upload', 'fix_media_counts');
 }
}

// Display post counts only for posts from current member

function fix_post_counts($views) {
  global $current_user, $wp_query;
  unset($views['mine']);
  $types = array(
    array( 'status' =>  NULL ),
    array( 'status' => 'publish' ),
    array( 'status' => 'draft' ),
    array( 'status' => 'pending' ),
    array( 'status' => 'trash' )
  );

  foreach( $types as $type ) {
    $query = array(
      'author'   => $current_user->ID,
      'post_type'   => 'vehicles',
      'post_status' => $type['status']
    );

    $result = new WP_Query($query);

    if( $type['status'] == NULL ):

      $class = ($wp_query->query_vars['post_status'] == NULL) ? ' class="current"' : '';
      $views['all'] = sprintf(__('<a href="%s"'. $class .'>All <span class="count">(%d)</span></a>', 'all'),
        admin_url('edit.php?post_type=vehicles'),
        $result->found_posts);

    elseif( $type['status'] == 'publish' ):

      $class = ($wp_query->query_vars['post_status'] == 'publish') ? ' class="current"' : '';
      $views['publish'] = sprintf(__('<a href="%s"'. $class .'>Published <span class="count">(%d)</span></a>', 'publish'),
        admin_url('edit.php?post_status=publish&post_type=vehicles'),
        $result->found_posts);

    elseif( $type['status'] == 'draft' ):

       $class = ($wp_query->query_vars['post_status'] == 'draft') ? ' class="current"' : '';
       $views['draft'] = sprintf(__('<a href="%s"'. $class .'>Draft'. ((sizeof($result->posts) > 1) ? "s" : "") .' <span class="count">(%d)</span></a>', 'draft'),
         admin_url('edit.php?post_status=draft&post_type=vehicles'),
         $result->found_posts);

    elseif( $type['status'] == 'pending' ):

        $class = ($wp_query->query_vars['post_status'] == 'pending') ? ' class="current"' : '';
        $views['pending'] = sprintf(__('<a href="%s"'. $class .'>Pending <span class="count">(%d)</span></a>', 'pending'),
          admin_url('edit.php?post_status=pending&post_type=vehicles'),
          $result->found_posts);

    elseif( $type['status'] == 'trash' ):

        $class = ($wp_query->query_vars['post_status'] == 'trash') ? ' class="current"' : '';
        $views['trash'] = sprintf(__('<a href="%s"'. $class .'>Trash <span class="count">(%d)</span></a>', 'trash'),
          admin_url('edit.php?post_status=trash&post_type=vehicles'),
          $result->found_posts);

    endif;
  }

  return $views;
}

// Hide other users' media counts from current member

function fix_media_counts($views) {
  global $wpdb, $current_user, $post_mime_types, $avail_post_mime_types;
  $views = array();
  $_num_posts = array();
  $count = $wpdb->get_results( "

    SELECT post_mime_type, COUNT( * ) AS num_posts
    FROM $wpdb->posts
    WHERE post_type = 'attachment'
    AND post_author = $current_user->ID
    AND post_status != 'trash'
    GROUP BY post_mime_type

 ", ARRAY_A );

 foreach( $count as $row )
    $_num_posts[$row['post_mime_type']] = $row['num_posts'];
    $_total_posts = array_sum($_num_posts);
    $detached = isset( $_REQUEST['detached'] ) || isset( $_REQUEST['find_detached'] );

 if ( !isset( $total_orphans ) )
    $total_orphans = $wpdb->get_var("

        SELECT COUNT( * )
        FROM $wpdb->posts
        WHERE post_type = 'attachment'
        AND post_author = $current_user->ID
        AND post_status != 'trash'
        AND post_parent < 1

    ");

  $matches = wp_match_mime_types(array_keys($post_mime_types), array_keys($_num_posts));

  foreach ( $matches as $type => $reals )

    foreach ( $reals as $real )

      $num_posts[$type] = ( isset( $num_posts[$type] ) ) ? $num_posts[$type] + $_num_posts[$real] : $_num_posts[$real];
      $class = ( empty($_GET['post_mime_type']) && !$detached && !isset($_GET['status']) ) ? ' class="current"' : '';
      $views['all'] = "<a href='upload.php'$class>" . sprintf( __('All <span class="count">(%s)</span>', 'uploaded files' ), number_format_i18n( $_total_posts )) . '</a>';

   foreach ( $post_mime_types as $mime_type => $label ) {

    $class = '';
    if ( !wp_match_mime_types($mime_type, $avail_post_mime_types) )
      continue;

    if ( !empty($_GET['post_mime_type']) && wp_match_mime_types($mime_type, $_GET['post_mime_type']) )
      $class = ' class="current"';

    if ( !empty( $num_posts[$mime_type] ) )
      $views[$mime_type] = "<a href='upload.php?post_mime_type=$mime_type'$class>" . sprintf( translate_nooped_plural( $label[2], $num_posts[$mime_type] ), $num_posts[$mime_type] ) . '</a>';

  }

 $views['detached'] = '<a href="upload.php?detached=1"' . ( $detached ? ' class="current"' : '' ) . '>' . sprintf( __( 'Unattached <span class="count">(%s)</span>', 'detached files' ), $total_orphans ) . '</a>';

 return $views;
}

// Redirect members who access the New Post page to the New Vehicle page instead

add_action( 'current_screen', function() {
    $screen = get_current_screen();
    if ( is_admin() && isset( $screen->id ) && $screen->id == 'post' && !current_user_can('edit_others_posts') ) {
        wp_redirect( admin_url( 'post-new.php?post_type=vehicles' ) );
        exit();
    }
} );

// Set default colour scheme

function set_default_admin_color($user_id) {
    $args = array(
        'ID' => $user_id,
        'admin_color' => 'modern'
    );
    wp_update_user( $args );
}
add_action('user_register', 'set_default_admin_color');

/**
 * Limit the upload size limit for non-administrators.
 *
 * @param string $size Upload size limit (in bytes).
 * @return int (maybe) Filtered size limit.
 */

function filter_site_upload_size_limit( $size ) {
    // Set the upload size limit to 1 MB for users lacking the 'manage_options' capability.
    if ( ! current_user_can( 'manage_options' ) ) {
        // 2 MB.
        $size = 1024 * 2000;
    }
    return $size;
}
add_filter( 'upload_size_limit', 'filter_site_upload_size_limit', 20 );