From d707ff2a36600e3d217a584d02dd1070b61bf9e0 Mon Sep 17 00:00:00 2001
From: iUnknwn <sezimmer@microsoft.com>
Date: Fri, 19 Jun 2020 12:45:23 -0700
Subject: [PATCH] Add support for auto-detection of featured images.

---
 layouts/partials/featured.html           | 10 ++++++++++
 layouts/partials/page-header.html        |  2 +-
 layouts/partials/summary-with-image.html |  6 +++---
 layouts/post/summary-with-image.html     |  7 ++++---
 4 files changed, 18 insertions(+), 7 deletions(-)
 create mode 100644 layouts/partials/featured.html

diff --git a/layouts/partials/featured.html b/layouts/partials/featured.html
new file mode 100644
index 0000000..10de1d2
--- /dev/null
+++ b/layouts/partials/featured.html
@@ -0,0 +1,10 @@
+{{ $linkToCover := "" }}
+{{ if .Params.featured_image }}
+    {{ $linkToCover = .Params.featured_image }}
+{{ else }}
+    {{ $img := .Resources.GetMatch "**cover*.jpg" }}
+    {{ with $img }}
+        {{ $linkToCover = .Permalink }}
+    {{ end }}
+{{ end }}
+{{ return $linkToCover }}
\ No newline at end of file
diff --git a/layouts/partials/page-header.html b/layouts/partials/page-header.html
index 8cd6d4f..22b7822 100644
--- a/layouts/partials/page-header.html
+++ b/layouts/partials/page-header.html
@@ -1,4 +1,4 @@
-{{ $featured_image := .Params.featured_image }}
+{{ $featured_image := partial "featured.html" . }}
 {{ if $featured_image }}
   {{/* Trimming the slash and adding absURL make sure the image works no matter where our site lives */}}
   {{ $featured_image := (trim $featured_image "/") | absURL }}
diff --git a/layouts/partials/summary-with-image.html b/layouts/partials/summary-with-image.html
index 962981f..8fcf1ae 100644
--- a/layouts/partials/summary-with-image.html
+++ b/layouts/partials/summary-with-image.html
@@ -1,8 +1,8 @@
-{{ $featured_image := .Params.featured_image }}
+{{ $featured_image := partial "featured.html" . }}
 <article class="bb b--black-10">
   <div class="db pv4 ph3 ph0-l no-underline dark-gray">
     <div class="flex flex-column flex-row-ns">
-      {{ if .Params.featured_image }}
+      {{ if $featured_image }}
           {{/* Trimming the slash and adding absURL make sure the image works no matter where our site lives */}}
         {{ $featured_image := (trim $featured_image "/") | absURL }}
         <div class="pr3-ns mb4 mb0-ns w-100 w-40-ns">
@@ -11,7 +11,7 @@
           </a>
         </div>
       {{ end }}
-      <div class="blah w-100{{ if .Params.featured_image }} w-60-ns pl3-ns{{ end }}">
+      <div class="blah w-100{{ if $featured_image }} w-60-ns pl3-ns{{ end }}">
         <h1 class="f3 fw1 athelas mt0 lh-title">
           <a href="{{.Permalink}}" class="color-inherit dim link">
             {{ .Title }}
diff --git a/layouts/post/summary-with-image.html b/layouts/post/summary-with-image.html
index bd74fd4..3545c3c 100644
--- a/layouts/post/summary-with-image.html
+++ b/layouts/post/summary-with-image.html
@@ -1,12 +1,13 @@
 <article class="bb b--black-10">
   <a class="db pv4 ph3 ph0-l no-underline dark-gray dim" href="{{ .Permalink }}">
     <div class="flex flex-column flex-row-ns">
-      {{ if .Params.featured_image }}
+      {{ $featured_image := partial "featured.html" . }}
+      {{ if $featured_image }}
         <div class="pr3-ns mb4 mb0-ns w-100 w-40-ns">
-          <img src="{{ .Params.featured_image }}" class="db" alt="image from {{ .Title }}">
+          <img src="{{ $featured_image }}" class="db" alt="image from {{ .Title }}">
         </div>
       {{ end }}
-      <div class="w-100{{ if .Params.featured_image }} w-60-ns pl3-ns{{ end }}">
+      <div class="w-100{{ if $featured_image }} w-60-ns pl3-ns{{ end }}">
         <h1 class="f3 fw1 athelas mt0 lh-title">{{ .Title }}</h1>
         <div class="f6 f5-l lh-copy nested-copy-line-height">
           {{ .Summary }}