add last-modified date

Last modified date links to latest commit for the active page of 'doc'
type. Disabled by default keep with the minimalist theme.

exampleSite/config.yml

@@ -7,6 +7,7 @@ theme: hugo-book
 
 # Book configuration
 disablePathToLower: true
+enableGitInfo: false
 
 params:
   # show or hide table of contents for page
@@ -20,6 +21,10 @@ params:
   # if bookMenuBundle is not set, 'docs' is value by default
   BookSection: docs
 
+  # Set source repository location.
+  # Used for 'Last Modified' and 'Edit this page' links.
+  BookRepo: https://github.com/alex-shpak/hugo-book
+
   # Enable "Edit this page" links for 'doc' page type.
-  # Disabled by default. Uncomment to enable.
+  # Disabled by default. Uncomment to enable. Requires 'BookRepo' param.
-  # BookEditURL: https://github.com/alex-shpak/hugo-book/edit/master/exampleSite/content/
+  # BookEditPath: edit/master/exampleSite/content

layouts/partials/docs/git-footer.html

@@ -1,9 +1,18 @@
-{{ with .Site.Params.BookEditURL }}
+{{ if or .GitInfo .Site.Params.BookEditPath }}
-<div class="align-center book-git-footer justify-end">
+<div class="align-center book-git-footer {{ if not .GitInfo }}justify-end{{ else }}justify-between{{ end }}">
+  {{ with .GitInfo }}
   <div>
-    <a href="{{ . }}{{ $.File.Path }}" target="_blank" rel="noopener">
+    <a href="{{ $.Site.Params.BookRepo }}/commit/{{ .Hash }}" title='Last modified {{ .AuthorDate.Local.Format "January 2, 2006 15:04 MST" }} by {{ .AuthorName }}' target="_blank" rel="noopener">
+      <img src="{{ "svg/code-merge.svg" | absURL }}" /> {{ .AuthorDate.Local.Format "Last Modified Jan 2, 2006" }}
+    </a>
+  </div>
+  {{ end }}
+  {{ with .Site.Params.BookEditPath }}
+  <div>
+    <a href="{{ $.Site.Params.BookRepo }}/{{ . }}/{{ $.File.Path }}" target="_blank" rel="noopener">
       <img src="{{ "svg/code-fork.svg" | absURL }}" /> Edit this page
     </a>
   </div>
+  {{ end }}
 </div>
 {{ end }}

static/svg/code-merge.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M5 18.184v-11.368c1.163-.413 2-1.511 2-2.816 0-1.657-1.343-3-3-3s-3 1.343-3 3c0 1.305.837 2.403 2 2.816v11.367c-1.163.414-2 1.512-2 2.817 0 1.657 1.343 3 3 3s3-1.343 3-3c0-1.305-.837-2.403-2-2.816zm-2.8-14.184c0-.993.807-1.8 1.8-1.8s1.8.807 1.8 1.8-.807 1.8-1.8 1.8-1.8-.807-1.8-1.8zm1.8 18.8c-.993 0-1.8-.807-1.8-1.8s.807-1.8 1.8-1.8 1.8.807 1.8 1.8-.807 1.8-1.8 1.8zm17-4.616v-11.184c0-2.206-1.794-4-4-4h-3v-3l-4 4 4 4v-3h3c1.103 0 2 .897 2 2v11.184c-1.163.413-2 1.512-2 2.816 0 1.657 1.343 3 3 3s3-1.343 3-3c0-1.305-.837-2.403-2-2.816zm-1 4.616c-.993 0-1.8-.807-1.8-1.8s.807-1.8 1.8-1.8 1.8.807 1.8 1.8-.807 1.8-1.8 1.8z"/></svg>