<%page expression_filter="h"/>
<%!
import logging
from django.contrib.staticfiles.storage import staticfiles_storage
from pipeline_mako import compressed_css, compressed_js
from django.utils.translation import get_language_bidi
from mako.exceptions import TemplateLookupException
from edxmako.shortcuts import marketing_link

from openedx.core.djangolib.js_utils import js_escaped_string
from openedx.core.djangoapps.site_configuration.helpers import (
  page_title_breadcrumbs,
  get_value,
)

from openedx.core.djangoapps.theming.helpers import (
  get_template_path,
  is_request_in_themed_site,
)
from certificates.api import get_asset_url_by_slug
logger = logging.getLogger(__name__)
%>

<%def name="marketing_link(name)"><%
    link = marketing_link(name)
    return "/" if link == "#" else link
%></%def>

<%def name='url(file, raw=False)'><%
try:
    url = staticfiles_storage.url(file)
except:
    url = file
## HTML-escaping must be handled by caller
%>${url | n, decode.utf8}${"?raw" if raw else ""}</%def>

<%def name='certificate_asset_url(slug)'><%
try:
    url = get_asset_url_by_slug(slug)
except:
    url = ''
## HTML-escaping must be handled by caller
%>${url | n, decode.utf8}</%def>

<%def name='css(group, raw=False)'>
  <%
      rtl_group = '{}-rtl'.format(group)

      if get_language_bidi() and rtl_group in settings.PIPELINE_CSS:
        group = rtl_group
  %>

  % if settings.PIPELINE_ENABLED:
    ${compressed_css(group, raw=raw) | n, decode.utf8}
  % else:
    % for filename in settings.PIPELINE_CSS[group]['source_filenames']:
      <link rel="stylesheet" href="${staticfiles_storage.url(filename.replace('.scss', '.css'))}${"?raw" if raw else ""}" type="text/css" media="all" / >
    % endfor
  %endif
</%def>

<%def name='js(group)'>
  % if settings.PIPELINE_ENABLED:
    ${compressed_js(group) | n, decode.utf8}
  % else:
    % for filename in settings.PIPELINE_JS[group]['source_filenames']:
      <script type="text/javascript" src="${staticfiles_storage.url(filename.replace('.coffee', '.js'))}"></script>
    % endfor
  %endif
</%def>

## A language-direction indicator, suitable for use in class="" attributes,
## for example:
##
##      <body class="${dir_rtl()}">
##
<%def name="dir_rtl()"><%
    return 'rtl' if get_language_bidi() else 'ltr'
%></%def>

<%def name="include(path)"><%
from django.conf import settings
from django.template.engine import Engine
from django.template.loaders.filesystem import Loader
engine = Engine(dirs=settings.DEFAULT_TEMPLATE_ENGINE['DIRS'])
source, template_path = Loader(engine).load_template_source(path)
%>${source | n, decode.utf8}</%def>

<%def name="webpack(entry)">
    <%doc>
        Loads Javascript onto your page from a Webpack-generated bundle.
        Uses the Django template engine because our webpack loader only provides template tags for Jinja and Django.
    </%doc>
    <%
        from django.template import Template, Context
        try:
            return Template("""
                {% load render_bundle from webpack_loader %}
                {% render_bundle entry %}
                <script type="text/javascript">
                    {% autoescape off %}{{ body }}{% endautoescape %}
                </script>
            """).render(Context({
                'entry': entry,
                'body': capture(caller.body)
            }))
        except IOError as e:
            # Don't break Mako template rendering if the bundle or webpack-stats can't be found, but log it
            logger.error(e)
    %>
</%def>

<%def name="require_module(module_name, class_name)">
    <%doc>
      Loads Javascript onto your page synchronously.
      Uses RequireJS in development and a plain script tag in production.
      Use this form of require_module for all new code.
    </%doc>
    % if not settings.REQUIRE_DEBUG:
      <script type="text/javascript" src="${staticfiles_storage.url(module_name + '.js') + '?raw'}"></script>
    % endif
    <script type="text/javascript">
        (function (require) {
            require(['${module_name | n, js_escaped_string}'], function (${class_name | n, decode.utf8}) {
                ${caller.body() | n, decode.utf8}
            });
        }).call(this, require || RequireJS.require);
    </script>
</%def>

<%def name="require_module_async(module_name, class_name)">
  <%doc>
    Legacy mode of require_module that operates asynchronously, required for certain edge cases
    (notably where Javascript is required outside of a <%block name="js_extra" or "headextra").
    Do not use for any new code; instead create a factory and use require_module above.
  </%doc>
  <script type="text/javascript">
    (function (require) {
      % if settings.REQUIRE_DEBUG:
          (function (require) {
              require(['${module_name | n, js_escaped_string}'], function (${class_name | n, decode.utf8}) {
                  ${caller.body() | n, decode.utf8}
              });
          }).call(this, require || RequireJS.require);
      % else:
        ## The "raw" parameter is specified to avoid the URL from being further maninpulated by
        ## static_replace calls (as would happen if require_module is used within courseware).
        ## Without specifying "raw", a call to static_replace would result in the MD5 hash being
        ## being appended more than once, causing the import to fail in production environments.
        require(['${staticfiles_storage.url(module_name + ".js") + "?raw" | n, js_escaped_string}'], function () {
          require(['${module_name | n, js_escaped_string}'], function (${class_name | n, decode.utf8}) {
            ${caller.body() | n, decode.utf8}
          });
        });
      % endif
    }).call(this, require || RequireJS.require);
  </script>
</%def>

<%def name="optional_include_mako(file, is_theming_enabled=False)"><%
# http://stackoverflow.com/q/21219531
if is_theming_enabled:
    file = get_template_path(file)
try:
    tmpl = self.get_template(file)
except TemplateLookupException:
    pass
else:
    tmpl.render_context(context)
%></%def>


<%def name="get_page_title_breadcrumbs(*args)"><%
    return page_title_breadcrumbs(*args)
%></%def>

<%def name="get_platform_name()"><%
    return get_value('platform_name', settings.PLATFORM_NAME)
%></%def>

<%def name="get_value(val_name, default=None, **kwargs)"><%
    return get_value(val_name, default=default, **kwargs)
%></%def>

<%def name="get_template_path(relative_path, **kwargs)"><%
    return get_template_path(relative_path, **kwargs)
%></%def>

<%def name="is_request_in_themed_site()"><%
    return is_request_in_themed_site()
%></%def>

<%def name="get_tech_support_email_address()"><%
    return get_value('email_from_address', settings.TECH_SUPPORT_EMAIL)
%></%def>
