jQuery(document).ready(function( $ ) {
    
    function isEmpty(str) {
        return (!str || 0 === str.length);
    }

    function sendNotice(noticeClass, message) {
        $('#output').html('<div id="message" class="notice ' + noticeClass + '"><p>' + message + '</p></div>');
    }

    function requestRender(json) {
        var jsonBibtex = JSON.stringify(json);
        $('[name=bibtex_json]').val(jsonBibtex);
            
        var data = {
            'action'	:	'academizer_ajax_render_bibtex',
            'bibtex'	:	jsonBibtex,
            'paper_url'	:	$('[name=paper_url]').val(),
            'pub_url'	:	$('[name=pub_url]').val(),
        };
        
        jQuery.post(academizer.ajax_url, data, function(response) {
            response = JSON.parse(response);
            if (response.result > 0) {
                sendNotice('notice-info', 'Bibtex type: <strong>' + json[0].entryType + '</strong>');
                $('#output').append(response.message);
            }
            else
                sendNotice('notice-error', response.message);
        });
    }
   
    var $ = jQuery.noConflict();
	var bibtex = $('[name=bibtex]');
	var bibtexJSON = $('[name=bibtex_json]') ;
	
	var jsonText = bibtexJSON.val();

	bibtex.on('change', function() {

	    try {
            var json = bibtexParse.toJSON(bibtex.val());
            if (json.length == 0) {
                sendNotice('notice-error', 'No Bibtex entered.');
                return;
            }
        }
        catch(e)
        {
            sendNotice('notice-error', 'Bibtex is invalid.');
        }
        requestRender(json);
	});

    if (!isEmpty(jsonText))	{
        try {
            var json = JSON.parse(jsonText);
            var bibtexRef = bibtexParse.toBibtex(json, false).replace("\n\n","");
            bibtex.text(bibtexRef);
        }
        catch (e)
        {
            sendNotice('notice-error', 'Bibtex is invalid.');
        }

        bibtex.trigger('change');
    }
	
});