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<?php
/*
Plugin Name: User Meta Upload
Plugin URI: http://trepmal.com
Description: Add a file-upload form to the user edit profile page
Version: 0.1
Author: Kailey Lampert
Author URI: http://kaileylampert.com

Copyright (C) 2012  Kailey Lampert

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

add_action( 'personal_options_update', 'save_custom_profile_fields' );
add_action( 'edit_user_profile_update', 'save_custom_profile_fields' );

function save_custom_profile_fields( $user_id ) {
    //print_r($_FILES);
    $_POST['action'] = 'wp_handle_upload';
    $r = wp_handle_upload( $_FILES['picture'] );
    update_user_meta( $user_id, 'picture', $r, get_user_meta( $user_id, 'picture', true ) );

    //take upload, add to media library
    if (isset($r['file'])) {
        $filename = $r['file'];
        $title = explode('.', basename( $filename ) );
        $ext = array_pop( $title );
        $attachment = array(
           'guid' => $r['url'], 
           'post_mime_type' => $r['type'],
           'post_title' =>  implode('.', $title ),
           'post_content' => '',
           'post_status' => 'inherit'
        );
        $attach_id = wp_insert_attachment( $attachment, $filename );
        $attach_data = wp_generate_attachment_metadata( $attach_id, $filename );
        wp_update_attachment_metadata( $attach_id, $attach_data );
    }
 }
  
add_action( 'personal_options', 'add_profile_options');
function add_profile_options( $profileuser ) {

    $r = get_user_meta( $profileuser->ID, 'picture', true );
    ?>
    <tr>
        <th scope="row">Picture</th>
        <td><input type="file" name="picture" value="" />

            <?php // print_r($r); 
                if (!isset($r['error'])) {
                    $r = $r['url'];
                    echo "<img src='$r' />";
                } else {
                    $r = $r['error'];
                    echo $r;
                }
            ?>
        </td>
    </tr>
    <?php
}

add_action('user_edit_form_tag', 'make_form_accept_uploads');
function make_form_accept_uploads() {
	echo ' enctype="multipart/form-data"';
}