Implement collapsing consecutive posts in a series

Signed-off-by: Danila Fedorin <danila.fedorin@gmail.com>

assets/scss/style.scss

@@ -249,6 +249,20 @@ ul.post-list {
         text-align: center;
         margin-bottom: 0.6rem;
     }
+
+    p.series-link {
+      margin-top: 1rem;
+      font-size: 1.1rem;
+      border-top: $standard-border;
+      padding-top: 1rem;
+
+      .feather {
+        fill: none;
+        width: 1em;
+        height: 1em;
+        margin-right: 0.5em;
+      }
+    }
 }
 
 .katex-html {

i18n/en.toml

@@ -27,6 +27,9 @@
   one = "about one minute to read"
   other = "about {{ .Count }} minutes to read"
 
+[latestInSeries]
+  other = "Latest in series:"
+
 [recentPosts]
   other = "Recent posts"
 

layouts/index.html

@@ -2,9 +2,10 @@
 {{ .Content }}
 
 {{ i18n "recentPosts" }}:
+{{ partial "uniquebyseries.html" (dict "scratch" .Scratch) }}
 <ul class="post-list">
-    {{ range first 10 (where (where .Site.Pages.ByDate.Reverse "Section" "blog") ".Kind" "!=" "section") }}
+    {{ range first 10 (.Scratch.Get "pages") }}
-    {{ partial "post.html" (dict "page" .) }}
+    {{ partial "post.html" (dict "page" . "linkSeries" true) }}
     {{ end }}
 </ul>
 

layouts/partials/post.html

@@ -15,4 +15,13 @@
     </p>
     {{ end }}
     <p class="post-preview">{{ .page.Summary }} {{ if .page.Truncated }}...{{ end }}</p>
+    {{- if .linkSeries -}}
+    {{- $term := index (.page.GetTerms "series") 0 -}}
+    {{- with $term -}}
+    <p class="series-link">
+    {{- partial "icon.html" "corner-down-right" -}}
+    {{- i18n "latestInSeries" }} <a href="{{ $term.Permalink }}">{{ $term.Title }}</a>
+    </p>
+    {{- end -}}
+    {{- end }}
 </li>

layouts/partials/uniquebyseries.html

@@ -0,0 +1,14 @@
+{{- $scratch := .scratch -}}
+{{- $scratch.Set "pages" slice -}}
+{{- $tmpScratch := newScratch -}}
+{{- range $post := (where (where site.Pages.ByDate.Reverse "Section" "blog") ".Kind" "!=" "section") -}}
+{{- $term := index ($post.GetTerms "series") 0 -}}
+{{- if $term -}}
+{{- if not ($tmpScratch.Get $term.Permalink) -}}
+{{- $tmpScratch.Set $term.Permalink true -}}
+{{- $scratch.Add "pages" $post -}}
+{{- end -}}
+{{- else -}}
+{{- $scratch.Add "pages" $post -}}
+{{- end -}}
+{{- end -}}