var md = window.markdownit();
var context = {
	'xml' : {},
	'card' : jsyaml.load(document.getElementById("yaml_data").innerHTML),
	'alert' : alert,
};

// read xml data
var xml_data_items = document.getElementsByClassName("xml_data")
for (var i=0; i < xml_data_items.length; i++) {
	var key = xml_data_items[i].id.substr(9);
	var val = xml_data_items[i].innerHTML;
	context.xml[key] = val;
}

function is_set(asd) {
	return !(typeof asd === 'undefined' || asd.length === 0);
}

if (!is_set(context.card.title)       && context.xml.name       ) context.card.title       = context.xml.name;
if (!is_set(context.card.icon)        && context.xml.symbol     ) context.card.icon        = context.xml.symbol;
if (!is_set(context.card.description) && context.xml.description) context.card.description = context.xml.description;
if (!is_set(context.card.figures)     && context.xml.image      ) context.card.figures     = [{
	'name': (context.xml.image.substr(0, 4) == "http")
		? context.xml.image
		: context.xml.image.split(":").slice(1).join(":"),
	'type': (context.xml.image.substr(0, 4) == "http")
		? "url"
		: context.xml.image.split(":")[0],
	'scale': 1.0,
	'flip_x': false,
	'flip_y': false,
	'offset': [0.0, 0.0],
	'opacity': 1,
	'rotation': 0,
}];

var env = new nunjucks.Environment([], {
	autoescape: true,
	trimBlocks: true,
	lstripBlocks: true,
});
env.addFilter('markdown', function(str) {
	return md.render(str);
});
env.addFilter('cull_whitespace', function(str) {
    return str.split(/\s+/).join(' ').trim();
});
env.addFilter('any', function(iterable) {
    for (var index = 0; index < iterable.length; index++) {
        if (iterable[index]) return true;
    }
    return false;
});
env.addFilter('all', function(iterable) {
    for (var index = 0; index < iterable.length; index++) {
        if (!iterable[index]) return false;
    }
    return true;
});

try {
	rendered = env.renderString(jinja_template, context);
} catch(err) {
	rendered = "<pre style=\"font-size:0.8em; width:100%; border-radius:5px; padding:2mm; box-sizing: border-box; border: 2px solid black;  white-space: normal; background-color:#ff8888;\">" + err + "</pre>";
}
console.log(rendered);
document.write(rendered);