Make source partitial have different links depending on which project

the file belongs to

mkdocs.yml

@@ -2,6 +2,7 @@ site_name: Pleroma Documentation
 theme:
   favicon: 'images/pleroma_logo_vector_bg_32.png'
   name: 'material'
+  custom_dir: 'theme'
   # Disable google fonts
   font: false
   logo: 'images/pleroma_logo_vector_nobg.svg'
@@ -13,8 +14,8 @@ theme:
 
 extra_css:
   - css/extra.css
-repo_name: 'pleroma'
+repo_name: 'pleroma/docs'
-repo_url: 'https://git.pleroma.social/pleroma'
+repo_url: 'https://git.pleroma.social/pleroma/docs'
 
 extra:
   repo_icon: gitlab

theme/partials/source.html

@@ -0,0 +1,64 @@
+<!--
+  Copyright (c) 2016-2019 Martin Donath <martin.donath@squidfunk.com>
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to
+  deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+  IN THE SOFTWARE.
+-->
+
+{% import "partials/language.html" as lang with context %}
+
+<!--
+  Check whether the repository is hosted on one of the supported code hosting
+  platforms (GitHub, GitLab or Bitbucket) to show icon.
+-->
+{% set platform = config.extra.repo_icon or config.repo_url %}
+{% if "github" in platform %}
+  {% set repo_type = "github" %}
+{% elif "gitlab" in platform %}
+  {% set repo_type = "gitlab" %}
+{% elif "bitbucket" in platform %}
+  {% set repo_type = "bitbucket" %}
+{% else %}
+  {% set repo_type = "" %}
+{% endif %}
+
+{% if page and page.url.startswith('backend') %}
+  {% set repo_url = "https://git.pleroma.social/pleroma/pleroma" %}
+  {% set repo_name = "pleroma/pleroma" %}
+{% elif page and page.url.startswith('frontend') %}
+  {% set repo_url = "https://git.pleroma.social/pleroma/pleroma-fe" %}
+  {% set repo_name = "pleroma/pleroma-fe" %}
+{% else %}
+  {% set repo_url = config.repo_url %}
+  {% set repo_name = config.repo_name %}
+{% endif %}
+
+<!-- Repository containing source -->
+<a href="{{ repo_url }}" title="{{ lang.t('source.link.title') }}"
+    class="md-source" data-md-source="{{ repo_type }}">
+  {% if repo_type %}
+    <div class="md-source__icon">
+      <svg viewBox="0 0 24 24" width="24" height="24">
+        <use xlink:href="#__{{ repo_type }}" width="24" height="24"></use>
+      </svg>
+    </div>
+  {% endif %}
+  <div class="md-source__repository">
+    {{ repo_name }}
+  </div>
+</a>