From 2b7fb5cb0210ab85e4d355eabde798a785ec9c18 Mon Sep 17 00:00:00 2001
From: tdro <tdro@noreply.example.com>
Date: Mon, 12 Dec 2022 00:29:03 -0500
Subject: themes/default/layouts/partials/gallery-walk: Use mime types

Try to avoid nil explosion with mime type guards/checks
---
 .../default/layouts/partials/gallery-images.html   |   2 +-
 themes/default/layouts/partials/gallery-walk.html  | 103 ++++++++++-----------
 2 files changed, 48 insertions(+), 57 deletions(-)

diff --git a/themes/default/layouts/partials/gallery-images.html b/themes/default/layouts/partials/gallery-images.html
index a66531a..5950637 100644
--- a/themes/default/layouts/partials/gallery-images.html
+++ b/themes/default/layouts/partials/gallery-images.html
@@ -1,7 +1,7 @@
 {{ $folder := print "public/" (partial "author-user.html" .) "/media/" }}
 
 <gallery-images>
-  <h1>Picture Gallery</h1>
+  <h1>Gallery</h1>
   <aside>
     {{ partial "gallery-walk.html"
         (dict
diff --git a/themes/default/layouts/partials/gallery-walk.html b/themes/default/layouts/partials/gallery-walk.html
index 764fa6d..72b587c 100644
--- a/themes/default/layouts/partials/gallery-walk.html
+++ b/themes/default/layouts/partials/gallery-walk.html
@@ -4,76 +4,67 @@
 {{- $author := strings.TrimPrefix "public/" (strings.TrimSuffix "/media/" $folder) -}}
 {{- $prefix := print (partial "function-paths.html" "media") "/" $author "/gallery-walker_" -}}
 
+{{- $mimes := slice
+  "image/apng"
+  "image/avif"
+  "image/gif"
+  "image/jpeg"
+  "image/png"
+  "image/svg+xml"
+  "image/webp"
+-}}
+
 {{- if fileExists $folder -}}
   {{- range readDir $folder -}}
-
-    {{- $name      := index (split .Name ".") 0 -}}
-    {{- $extension := path.Ext .Name -}}
-
-    {{- if or
-      (eq $extension ".apng")
-      (eq $extension ".avif")
-      (eq $extension ".gif")
-      (eq $extension ".jfif")
-      (eq $extension ".jpeg")
-      (eq $extension ".jpg")
-      (eq $extension ".pjp")
-      (eq $extension ".pjpeg")
-      (eq $extension ".png")
-      (eq $extension ".svg")
-      (eq $extension ".webp")
-    -}}
-      {{-
-        $files = $files | append (dict
-          "Name" .Name
-          "Path" (path.Join $folder .Name)
-        )
-      -}}
+    {{- if not .IsDir -}}
+      {{- $file := path.Join $folder .Name -}}
+      {{- with resources.Get $file -}}
+        {{- if in $mimes (string .MediaType) -}}
+          {{-
+            $files = $files | append (dict
+              "Path" .Name
+            )
+          -}}
+        {{- end -}}
+      {{- end -}}
     {{- end -}}
-
     {{- if eq (len $files) 6 -}}
       {{- break -}}
     {{- end -}}
   {{- end -}}
+{{- end -}}
 
-  {{- if $files -}}
+{{- if and $files (resources.Get (index (first 1 $files) 0).Path) -}}
+  {{- range $files -}}
+    {{- with $image := resources.Get .Path -}}
+      {{- if in $mimes (string .MediaType) -}}
+        {{- $srcset := (.Content | resources.FromString (print $prefix (path.Base .))).Fit (print $dimensions " webp") -}}
+        {{- $image = (.Content | resources.FromString (print $prefix (path.Base .))).Fit (print $dimensions " png") -}}
+        {{- $decodedURL := print "/" (replaceRE "-" "/" (path.Base .Name) 2 | replaceRE "-.........webp" "") "/" -}}
+        {{- $relatedPage := or (in $decodedURL "/messages/") (in $decodedURL "/feeds/") -}}
 
-    {{- range $files -}}
-      {{- with $image := resources.Get .Path -}}
+        {{- if not $relatedPage -}}
+          {{- $decodedURL = print "/" $author "/" -}}
+        {{- end -}}
 
-      {{- $srcset := (.Content | resources.FromString (print $prefix (path.Base .))).Fit (print $dimensions " webp") -}}
-      {{- $image = (.Content | resources.FromString (print $prefix (path.Base .))).Fit (print $dimensions " png") -}}
-      {{- $decodedURL := print "/" (replaceRE "-" "/" (path.Base .Name) 2 | replaceRE "-.........webp" "") "/" -}}
-      {{- $relatedPage := or (in $decodedURL "/messages/") (in $decodedURL "/feeds/") -}}
-
-      {{- if not $relatedPage -}}
-        {{- $decodedURL = print "/" $author "/" -}}
+        <a href="{{ $decodedURL }}">
+          <picture>
+            <source srcset="{{ $srcset.RelPermalink }}" type="image/webp" />
+            <img loading="lazy"
+              alt="{{ .Name }}"
+              title="{{ .Name }}"
+              width="{{ $image.Width }}"
+              height="{{ $image.Height }}"
+              src="{{ $image.RelPermalink }}"
+            />
+          </picture>
+        </a>
       {{- end -}}
-
-      <a href="{{ $decodedURL }}">
-        <picture>
-          <source srcset="{{ $srcset.RelPermalink }}" type="image/webp" />
-          <img loading="lazy"
-            alt="{{ .Name }}"
-            title="{{ .Name }}"
-            width="{{ $image.Width }}"
-            height="{{ $image.Height }}"
-            src="{{ $image.RelPermalink }}"
-          />
-        </picture>
-      </a>
-     {{- end -}}
     {{- end -}}
-
-    <gallery-overlay></gallery-overlay>
-
-  {{- else -}}
-    <footer>
-      <code>No media found!</code>
-    </footer>
   {{- end -}}
+  <gallery-overlay></gallery-overlay>
 {{- else -}}
   <footer>
     <code>No media found!</code>
   </footer>
-{{- end }}
+{{- end -}}
-- 
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