class VTepLCore {
    constructor({path, suffix, template, cache} = {}) {
        this.templates = {};
        this.dir = path || '/tpl/';
        this.suffix = suffix || 'tpl';
        this.path = template || `${this.dir}%s.${this.suffix}`;
        this.cache = cache === undefined ? true : cache;
    }

    // Add download queue!
    async loadTemplate(name) {
        if (this.templates[name]) {
            return null;
        }
        this.templates[name] = true; // small hack to prevent double loading :)
        let path = this.path.replace('%s', name);
        let data = await Network.requestUrl(path)
        this.addTpl(name, data);
        loader.addLoadedItems(1);
        return null;
    }

    async loadArray(names) {
        loader.addToLoadItem(names.length)
        const promises = []
        for (const name of names) {
            promises.push(this.loadTemplate(name));
        }
        await Promise.all(promises)
    }

    addTpl(name, content) {
        let temp = this.templates[name] = new VTepLTemplate(name, content, this);
        temp.parseContent(this.cache);
    }

    async renderOn(name, data) {
        if (this.templates[name]) {
            return await this.templates[name].render(data);
        }
        PrettyConsole.warn("VTepLRender", `Template: "${name}" dont exist`);
        return '';
    }

    renderTo(element, name, data = {}) {
        this.renderOn(name, data).then(html => {
            element.innerHTML = html;
        })
    }

    async renderToAsync(element, name, data = {}) {
        return this.renderOn(name, data).then(html => {
            element.innerHTML = html;
        })
    }
}