/* coolz toolz */

var youtube_embed = function( find_string, find_video_string ) {
    var embed_limit             = 5;
    
    var post_selector           = '.post';
    //var find_string             = 'youtube.com';
    
    var find_url_string         = '<a href="';
    var find_url_string_other   = '<a class="bbc_link" href="';
    var find_url_string_end     = '>';
    
    var find_url_end_string     = '</a>';
    
    var find_link_string        = 'href="';
    var find_link_end_string    = '"';
    
    //var find_video_string       = 'v=';
    
    var video_string_terminators = ['&', '?', '#'];
    
    //var embed_string            = '<div class="youtube_embed"><iframe src="https://www.youtube.com/embed/';
    //var embed_string_end        = '" frameborder="0" allowfullscreen></iframe></div>';
    
    var video_string_placeholder = '__VIDEO_STRING__';
    
    var video_image_string      = '<div class="youtube_embed"><a href="#' + video_string_placeholder + '"><div class="overlay"><span>Click to Play</span></div><img src="https://img.youtube.com/vi/' + video_string_placeholder + '/hqdefault.jpg"></a></div>';
    //var video_image_string_end  = '/hqdefault.jpg"></a></div>';
    
    var all_posts = document.querySelectorAll( post_selector );
    
    for ( var i = 0; i < all_posts.length; i++ )
    {
        var html_content = all_posts[ i ].innerHTML;
        var html_content_lowercase = html_content.toLowerCase();
        
        //console.log( 'node ' + i.toString() );
        //console.log( html_content_lowercase );
        
        var find_position = 0;
        
        //while ( ( find_position = html_content_lowercase.indexOf( find_string ) ) !== -1 )
        for ( var embed_count = 0; embed_count < embed_limit; embed_count++ )
        {
            //console.log( 'find' + find_position );
            //console.log( html_content_lowercase.substr( find_position ) );
            
            if ( find_position === -1 )
            {
                break;
            }
            
            if ( ( find_position = html_content_lowercase.indexOf( find_string, find_position ) ) !== -1 )
            {
                //console.log( 'found' + find_position.toString() );
                //console.log( 'youtube possible in node ' + i.toString() );
                //console.log( html_content_lowercase.substr( find_position ) );
                
                //var find_url_position = html_content_lowercase.lastIndexOf( find_url_string, find_position );
                //
                //if ( find_url_position === -1 )
                //{
                //    find_url_position = html_content_lowercase.lastIndexOf( find_url_string_other, find_position );
                //}
                
                var find_url_position = html_content_lowercase.lastIndexOf( find_url_string_other, find_position );
                
                if ( find_url_position === -1 )
                {
                    find_url_position = html_content_lowercase.lastIndexOf( find_url_string, find_position );
                }
                
                //console.log( 'find_url_position' + find_url_position.toString() );
                
                if ( find_url_position !== -1 )
                {
                    //console.log( 'find_url_position' );
                    
                    var find_url_end_position = html_content_lowercase.indexOf( find_url_end_string, find_url_position );
                    
                    if ( find_url_end_position !== -1 )
                    {
                        //console.log( 'find_url_end_position' );
                        
                        var url_string = html_content.substr( find_url_position, find_url_end_position - find_url_position + find_url_end_string.length );
                        
                        //console.log( url_string );
                        
                        var find_link_position = html_content_lowercase.indexOf( find_link_string, find_url_position );
                        
                        if ( find_link_position !== -1 )
                        {
                            //console.log( 'find_link_position' );
                            
                            var find_link_end_position = html_content_lowercase.indexOf( find_link_end_string, find_link_position + find_link_string.length );
                            
                            if ( find_link_end_position !== -1 )
                            {
                                //console.log( 'find_link_end_position' );
                                
                                var link_string = html_content.substr( find_link_position, find_link_end_position - find_link_position + find_link_end_string.length );
                                
                                //console.log( link_string );
                                
                                var find_video_position = html_content_lowercase.indexOf( find_video_string, find_link_position );
                                
                                if ( find_video_position !== -1 )
                                {
                                    //console.log( 'find_video_position' );
                                    
                                    var video_string = html_content.substr( find_video_position + find_video_string.length, find_link_end_position - find_video_position + find_link_end_string.length - find_video_string.length - find_link_end_string.length );
                                    
                                    //console.log( video_string );
                                    
                                    for ( var j = 0; j < video_string_terminators.length; j++ )
                                    {
                                        var video_string_terminator_position = video_string.indexOf( video_string_terminators[ j ] );
                                        
                                        if ( video_string_terminator_position !== -1 )
                                        {
                                            video_string = video_string.substr( 0, video_string_terminator_position );
                                        }
                                    }
                                    
                                    //console.log( video_string );
                                    
                                    if ( video_string.length > 0 )
                                    {
                                        //var embed_html          = embed_string + video_string + embed_string_end;
                                        //var video_image_html    = video_image_string + video_string + video_image_string_end;
                                        var video_image_html    = video_image_string;
                                        
                                        while ( ( video_string_placeholder_position = video_image_html.indexOf( video_string_placeholder ) ) !== -1 )
                                        {
                                            video_image_html    = video_image_html.replace( video_string_placeholder, video_string );
                                        }
                                        
                                        //console.log( video_image_html );
                                        
                                        var post_string     = html_content.substr( 0, find_url_position );
                                        var post_end_string = html_content.substr( find_url_position, html_content.length );
                                        
                                        //var post_html       = post_string + embed_html + post_end_string;
                                        var post_html       = post_string + video_image_html + post_end_string;
                                        
                                        //console.log( post_html );
                                        
                                        //console.log( 'inserting youtube embed in node ' + i.toString() );
                                        
                                        all_posts[ i ].innerHTML = post_html;
                                        
                                        html_content = all_posts[ i ].innerHTML;
                                        html_content_lowercase = html_content.toLowerCase();
                                        
                                        find_position = post_string.length + video_image_html.length + url_string.length;
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }
};

var youtube_onclick_override = function( e ) {
    e.preventDefault();
    
    //console.log( 'youtube click override' );
    
    var find_video_string       = '#';
    
    var video_string_position   = this.href.lastIndexOf( find_video_string );
    
    if ( video_string_position !== -1 )
    {
        var video_string            = this.href.substr( video_string_position + find_video_string.length );
        
        var embed_string            = '<iframe src="https://www.youtube.com/embed/';
        var embed_string_end        = '?autoplay=1" frameborder="0" allowfullscreen></iframe>';
        
        var embed_html              = embed_string + video_string + embed_string_end;
        
        this.parentNode.innerHTML   = embed_html;
    }
};

var youtube_embed_attach_handler = function( handler ) {
    //console.log( 'attach youtube click handler' );
    
    var embed_link_selector = 'div.youtube_embed div.overlay';
    
    var all_embed_links = document.querySelectorAll( embed_link_selector );
    
    for ( var i = 0; i < all_embed_links.length; i++ )
    {
        all_embed_links[ i ].parentNode.onclick = handler;
    }
};

//console.log( 'LOADING coolz.js' );

//window.onload = function() {
    youtube_embed( 'youtube.com', 'v=' );
    youtube_embed( 'youtu.be', 'be/' );
    youtube_embed_attach_handler( youtube_onclick_override );
//}