appview: add stats and line-nr links to diffs

drive-by fix: style the separator between pull submissions

appview/pages/templates/fragments/diff.html

···
   {{ $this := $commit.This }}
   {{ $parent := $commit.Parent }}
 
+  <section class="mt-6 p-6 border border-gray-200 dark:border-gray-700 w-full mx-auto rounded bg-white dark:bg-gray-800 drop-shadow-sm">
+    <div class="diff-stat">
+      <div class="flex gap-2 items-center">
+        <strong class="text-sm uppercase dark:text-gray-200">Changed files</strong>
+        {{ block "statPill" $stat }} {{ end }}
+      </div>
+      <div class="overflow-x-auto">
+        {{ range $diff }}
+        <ul class="dark:text-gray-200">
+          {{ if .IsDelete }}
+          <li><a href="#file-{{ .Name.Old }}" class="dark:hover:text-gray-300">{{ .Name.Old }}</a></li>
+          {{ else }}
+          <li><a href="#file-{{ .Name.New }}" class="dark:hover:text-gray-300">{{ .Name.New }}</a></li>
+          {{ end }}
+        </ul>
+        {{ end }}
+      </div>
+    </div>
+  </section>
+
   {{ $last := sub (len $diff) 1 }}
   {{ range $idx, $hunk := $diff }}
   {{ with $hunk }}
···
                 {{ else }}
                 <span class="bg-gray-100 text-gray-700 dark:bg-gray-700 dark:text-gray-300 {{ $markerstyle }}">MODIFIED</span>
                 {{ end }}
+
+                {{ block "statPill" .Stats }} {{ end }}
 
                 {{ if .IsDelete }}
                 <a class="dark:text-white whitespace-nowrap overflow-x-auto" {{if $this }}href="/{{ $repo }}/blob/{{ $this }}/{{ .Name.Old }}"{{end}}>
···
 
           <div class="transition-all duration-700 ease-in-out">
             {{ if .IsDelete }}
-            <p class="text-center text-gray-400 dark:text-gray-500 p-4">
-            This file has been deleted in this commit.
-            </p>
+              <p class="text-center text-gray-400 dark:text-gray-500 p-4">
+              This file has been deleted.
+              </p>
+            {{ else if .IsCopy }}
+              <p class="text-center text-gray-400 dark:text-gray-500 p-4">
+              This file has been copied.
+              </p>
+            {{ else if .IsRename }}
+              <p class="text-center text-gray-400 dark:text-gray-500 p-4">
+              This file has been renamed.
+              </p>
+            {{ else if .IsBinary }}
+              <p class="text-center text-gray-400 dark:text-gray-500 p-4">
+              This is a binary file and will not be displayed.
+              </p>
             {{ else }}
-            {{ if .IsBinary }}
-            <p class="text-center text-gray-400 dark:text-gray-500 p-4">
-            This is a binary file and will not be displayed.
-            </p>
-            {{ else }}
+            {{ $name := .Name.New }}
             <pre class="overflow-x-auto"><div class="overflow-x-auto"><div class="min-w-full inline-block">{{- range .TextFragments -}}<div class="bg-gray-100 dark:bg-gray-700 text-gray-500 dark:text-gray-400 select-none text-center">&middot;&middot;&middot;</div>
              {{- $oldStart := .OldPosition -}}
              {{- $newStart := .NewPosition -}}
-             {{- $lineNrStyle := "min-w-[3rem] flex-shrink-0 select-none text-right" -}}
-             {{- $lineNrSepStyle1 := "text-gray-400 dark:text-gray-500 bg-white dark:bg-gray-800" -}}
-             {{- $lineNrSepStyle2 := "text-gray-400 dark:text-gray-500 bg-white dark:bg-gray-800 pr-2" -}}
+             {{- $lineNrStyle := "min-w-[3.5rem] flex-shrink-0 select-none text-right bg-white dark:bg-gray-800 scroll-mt-10 target:border target:border-amber-500 target:rounded " -}}
+             {{- $linkStyle := "text-gray-400 dark:text-gray-500 hover:underline" -}}
+             {{- $lineNrSepStyle1 := "" -}}
+             {{- $lineNrSepStyle2 := "pr-2" -}}
              {{- range .Lines -}}
                {{- if eq .Op.String "+" -}}
                  <div class="bg-green-100 dark:bg-green-800/30 text-green-700 dark:text-green-400 flex min-w-full items-center">
                    <div class="{{$lineNrStyle}} {{$lineNrSepStyle1}}"><span aria-hidden="true" class="invisible">{{$newStart}}</span></div>
-                   <div class="{{$lineNrStyle}} {{$lineNrSepStyle2}}">{{ $newStart }}</div>
+                   <div class="{{$lineNrStyle}} {{$lineNrSepStyle2}}" id="{{$name}}-N{{$newStart}}"><a class="{{$linkStyle}}" href="#{{$name}}-N{{$newStart}}">{{ $newStart }}</a></div>
                    <div class="w-5 flex-shrink-0 select-none text-center">{{ .Op.String }}</div>
                    <div class="px-2">{{ .Line }}</div>
                  </div>
···
                {{- end -}}
                {{- if eq .Op.String "-" -}}
                  <div class="bg-red-100 dark:bg-red-800/30 text-red-700 dark:text-red-400 flex min-w-full items-center">
-                   <div class="{{$lineNrStyle}} {{$lineNrSepStyle1}}">{{ $oldStart }}</div>
+                   <div class="{{$lineNrStyle}} {{$lineNrSepStyle1}}" id="{{$name}}-O{{$oldStart}}"><a class="{{$linkStyle}}" href="#{{$name}}-O{{$oldStart}}">{{ $oldStart }}</a></div>
                    <div class="{{$lineNrStyle}} {{$lineNrSepStyle2}}"><span aria-hidden="true" class="invisible">{{$oldStart}}</span></div>
                    <div class="w-5 flex-shrink-0 select-none text-center">{{ .Op.String }}</div>
                    <div class="px-2">{{ .Line }}</div>
···
                {{- end -}}
                {{- if eq .Op.String " " -}}
                  <div class="bg-white dark:bg-gray-800 text-gray-500 dark:text-gray-400 flex min-w-full items-center">
-                   <div class="{{$lineNrStyle}} {{$lineNrSepStyle1}}">{{ $oldStart }}</div>
-                   <div class="{{$lineNrStyle}} {{$lineNrSepStyle2}}">{{ $newStart }}</div>
+                   <div class="{{$lineNrStyle}} {{$lineNrSepStyle1}}" id="{{$name}}-O{{$oldStart}}"><a class="{{$linkStyle}}" href="#{{$name}}-O{{$oldStart}}">{{ $oldStart }}</a></div>
+                   <div class="{{$lineNrStyle}} {{$lineNrSepStyle2}}" id="{{$name}}-N{{$newStart}}"><a class="{{$linkStyle}}" href="#{{$name}}-N{{$newStart}}">{{ $newStart }}</a></div>
                    <div class="w-5 flex-shrink-0 select-none text-center">{{ .Op.String }}</div>
                    <div class="px-2">{{ .Line }}</div>
                  </div>
···
              {{- end -}}
              {{- end -}}</div></div></pre>
             {{- end -}}
-            {{ end }}
           </div>
 
         </details>
···
   </section>
   {{ end }}
   {{ end }}
+{{ end }}
+
+{{ define "statPill" }}
+  <div class="flex items-center font-mono text-sm">
+    {{ if and .Insertions .Deletions }}
+      <span class="rounded-l p-1 select-none bg-green-100 text-green-700 dark:bg-green-800/50 dark:text-green-400">+{{ .Insertions }}</span>
+      <span class="rounded-r p-1 select-none bg-red-100 text-red-700 dark:bg-red-800/50 dark:text-red-400">-{{ .Deletions }}</span>
+    {{ else if .Insertions }}
+      <span class="rounded p-1 select-none bg-green-100 text-green-700 dark:bg-green-800/50 dark:text-green-400">+{{ .Insertions }}</span>
+    {{ else if .Deletions }}
+      <span class="rounded p-1 select-none bg-red-100 text-red-700 dark:bg-red-800/50 dark:text-red-400">-{{ .Deletions }}</span>
+    {{ end }}
+  </div>
 {{ end }}

appview/pages/templates/repo/commit.html

···
 
 {{ $repo := .RepoInfo.FullName }}
 {{ $commit := .Diff.Commit }}
-{{ $stat := .Diff.Stat }}
-{{ $diff := .Diff.Diff }}
 
 <section class="commit dark:text-white">
   <div id="commit-message">
···
     <div>
       <p class="pb-2">{{ index $messageParts 0 }}</p>
       {{ if gt (len $messageParts) 1 }}
-      <p class="mt-1 cursor-text pb-2 text-sm">{{ nl2br (unwrapText (index $messageParts 1)) }}</p>
+      <p class="mt-1 cursor-text pb-2 text-sm">{{ nl2br (index $messageParts 1) }}</p>
       {{ end }}
     </div>
   </div>
···
           <span class="px-1 select-none before:content-['\00B7']"></span>
           {{ timeFmt $commit.Author.When }}
           <span class="px-1 select-none before:content-['\00B7']"></span>
-          <span>{{ $stat.FilesChanged }}</span> files <span class="font-mono">(+{{ $stat.Insertions }}, -{{ $stat.Deletions }})</span>
-          <span class="px-1 select-none before:content-['\00B7']"></span>
       </p>
 
       <p class="flex items-center text-sm text-gray-500 dark:text-gray-300">
···
       </p>
   </div>
 
-  <div class="diff-stat">
-    <br>
-    <strong class="text-sm uppercase mb-4 dark:text-gray-200">Changed files</strong>
-    <div class="overflow-x-auto">
-      {{ range $diff }}
-      <ul class="dark:text-gray-200">
-        {{ if .IsDelete }}
-        <li><a href="#file-{{ .Name.Old }}" class="dark:hover:text-gray-300">{{ .Name.Old }}</a></li>
-        {{ else }}
-        <li><a href="#file-{{ .Name.New }}" class="dark:hover:text-gray-300">{{ .Name.New }}</a></li>
-        {{ end }}
-      </ul>
-      {{ end }}
-    </div>
-  </div>
 </section>
 
 {{end}}

appview/pages/templates/repo/index.html

···
                               <p
                                   class="hidden mt-1 text-sm cursor-text pb-2 dark:text-gray-300"
                               >
-                                  {{ nl2br (unwrapText (index $messageParts 1)) }}
+                                  {{ nl2br (index $messageParts 1) }}
                               </p>
                           {{ end }}
                       </div>

appview/pages/templates/repo/issues/issues.html

···
     <div class="flex justify-between items-center">
         <p>
         filtering
-        <select class="border px-1 bg-white border-gray-200 dark:bg-gray-800 dark:border-gray-700" onchange="window.location.href = '/{{ .RepoInfo.FullName }}/issues?state=' + this.value">
+        <select class="border p-1 bg-white border-gray-200 dark:bg-gray-800 dark:border-gray-700" onchange="window.location.href = '/{{ .RepoInfo.FullName }}/issues?state=' + this.value">
           <option value="open" {{ if .FilteringByOpen }}selected{{ end }}>open ({{ .RepoInfo.Stats.IssueCount.Open }})</option>
           <option value="closed" {{ if not .FilteringByOpen }}selected{{ end }}>closed ({{ .RepoInfo.Stats.IssueCount.Closed }})</option>
         </select>

appview/pages/templates/repo/log.html

···
                                         <p
                                             class="hidden mt-1 text-sm cursor-text pb-2 dark:text-gray-300"
                                         >
-                                            {{ nl2br (unwrapText (index $messageParts 1)) }}
+                                            {{ nl2br (index $messageParts 1) }}
                                         </p>
                                     {{ end }}
                                 </div>

appview/pages/templates/repo/pulls/patch.html

···
           {{ end }}
       </section>
 
-      <div id="diff-stat">
-        <br>
-        <strong class="text-sm uppercase mb-4">Changed files</strong>
-        {{ range .Diff.Diff }}
-        <ul>
-          {{ if .IsDelete }}
-          <li><a href="#file-{{ .Name.Old }}">{{ .Name.Old }}</a></li>
-          {{ else }}
-          <li><a href="#file-{{ .Name.New }}">{{ .Name.New }}</a></li>
-          {{ end }}
-        </ul>
-        {{ end }}
-      </div>
   </div>
 
   <section>

appview/pages/templates/repo/pulls/pull.html

···
           {{ end }}
         </div>
     </details>
-    <hr class="md:hidden"/>
+    <hr class="md:hidden border-t border-gray-300 dark:border-gray-600"/>
     {{ end }}
   {{ end }}
 {{ end }}

appview/pages/templates/repo/pulls/pulls.html

···
         <p class="dark:text-white">
             filtering
             <select
-                class="border px-1 bg-white dark:bg-gray-800 border-gray-200 dark:border-gray-600 dark:text-white"
+                class="border p-1 bg-white dark:bg-gray-800 border-gray-200 dark:border-gray-600 dark:text-white"
                 onchange="window.location.href = '/{{ .RepoInfo.FullName }}/pulls?state=' + this.value"
             >
                 <option value="open" {{ if .FilteringBy.IsOpen }}selected{{ end }}>

appview/pages/templates/repo/tree.html

···
           {{ $stats := .TreeStats }}
 
           <span>at <a href="/{{ $.RepoInfo.FullName }}/tree/{{ $.Ref }}">{{ $.Ref }}</a></span>
-          <span class="select-none px-1 md:px-2 [&:before]:content-['·']"></span>
           {{ if eq $stats.NumFolders 1 }}
+            <span class="select-none px-1 md:px-2 [&:before]:content-['·']"></span>
             <span>{{ $stats.NumFolders }} folder</span>
-            <span class="select-none px-1 md:px-2 [&:before]:content-['·']"></span>
           {{ else if gt $stats.NumFolders 1 }}
-            <span>{{ $stats.NumFolders }} folders</span>
             <span class="select-none px-1 md:px-2 [&:before]:content-['·']"></span>
+            <span>{{ $stats.NumFolders }} folders</span>
           {{ end }}
 
           {{ if eq $stats.NumFiles 1 }}
+            <span class="select-none px-1 md:px-2 [&:before]:content-['·']"></span>
             <span>{{ $stats.NumFiles }} file</span>
           {{ else if gt $stats.NumFiles 1 }}
+            <span class="select-none px-1 md:px-2 [&:before]:content-['·']"></span>
             <span>{{ $stats.NumFiles }} files</span>
           {{ end }}
 

types/diff.go

···
 	IsRename      bool                   `json:"is_rename"`
 }
 
+type DiffStat struct {
+	Insertions int64
+	Deletions  int64
+}
+
+func (d *Diff) Stats() DiffStat {
+	var stats DiffStat
+	for _, f := range d.TextFragments {
+		stats.Insertions += f.LinesAdded
+		stats.Deletions += f.LinesDeleted
+	}
+	return stats
+}
+
 // A nicer git diff representation.
 type NiceDiff struct {
 	Commit struct {