import { registerUnbound } from 'discourse-common/lib/helpers';
import { findRawTemplate } from 'discourse/lib/raw-templates';

let _injections;

function renderRaw(ctx, container, template, templateName, params) {
  params = jQuery.extend({}, params);
  params.parent = params.parent || ctx;

  if (!_injections) {
    _injections = {
      siteSettings: container.lookup('site-settings:main'),
      currentUser: container.lookup('current-user:main'),
      site: container.lookup('site:main'),
      session: container.lookup('session:main'),
      topicTrackingState: container.lookup('topic-tracking-state:main')
    };
  }

  if (!params.view) {
    const module = `discourse/raw-views/${templateName}`;
    if (requirejs.entries[module]) {
      const viewClass = requirejs(module, null, null, true);
      if (viewClass && viewClass.default) {
        params.view = viewClass.default.create(params, _injections);
      }
    }

    if (!params.view) {
      params = jQuery.extend({}, params, _injections);
    }
  }

  return new Handlebars.SafeString(template(params));
}

registerUnbound('raw', function(templateName, params) {
  templateName = templateName.replace('.', '/');

  const container = Discourse.__container__;
  const template = findRawTemplate(templateName);
  if (!template) {
    console.warn('Could not find raw template: ' + templateName);
    return;
  }
  return renderRaw(this, container, template, templateName, params);
});