From 27a3e035657a8dcf3230fb916bcf479addaba4ec Mon Sep 17 00:00:00 2001
From: Anirudh Oppiliappan <anirudh@tangled.org>
Date: Wed, 28 Jan 2026 14:48:36 +0200
Subject: [PATCH] appview/{repo,pages}: show most recent commit in blob view

Signed-off-by: Anirudh Oppiliappan <anirudh@tangled.org>
---
 appview/pages/pages.go                 | 12 ++++---
 appview/pages/templates/repo/blob.html | 49 ++++++++++++++++++++++++++
 appview/repo/blob.go                   | 27 ++++++++++++++
 3 files changed, 83 insertions(+), 5 deletions(-)

diff --git a/appview/pages/pages.go b/appview/pages/pages.go
index ce43444d..d41ceaa0 100644
--- a/appview/pages/pages.go
+++ b/appview/pages/pages.go
@@ -855,11 +855,13 @@ func (p *Pages) RepoArtifactFragment(w io.Writer, params RepoArtifactParams) err
 }
 
 type RepoBlobParams struct {
-	LoggedInUser *oauth.MultiAccountUser
-	RepoInfo     repoinfo.RepoInfo
-	Active       string
-	BreadCrumbs  [][]string
-	BlobView     models.BlobView
+	LoggedInUser   *oauth.MultiAccountUser
+	RepoInfo       repoinfo.RepoInfo
+	Active         string
+	BreadCrumbs    [][]string
+	BlobView       models.BlobView
+	EmailToDid     map[string]string
+	LastCommitInfo *types.LastCommitInfo
 	*tangled.RepoBlob_Output
 }
 
diff --git a/appview/pages/templates/repo/blob.html b/appview/pages/templates/repo/blob.html
index 178f0828..62edd4f0 100644
--- a/appview/pages/templates/repo/blob.html
+++ b/appview/pages/templates/repo/blob.html
@@ -12,6 +12,55 @@
 
 {{ define "repoContent" }}
     {{ $linkstyle := "no-underline hover:underline" }}
+
+    {{ if .LastCommitInfo }}
+    <div class="pb-3 mb-3 border-b border-gray-200 dark:border-gray-700">
+        <div id="commit-message">
+            {{ $messageParts := splitN .LastCommitInfo.Message "\n\n" 2 }}
+            <div class="text-base">
+                <a href="/{{ .RepoInfo.FullName }}/commit/{{ .LastCommitInfo.Hash }}"
+                   class="inline no-underline hover:underline dark:text-white">
+                    {{ index $messageParts 0 }}
+                </a>
+                {{ if gt (len $messageParts) 1 }}
+                <button
+                    class="py-1/2 px-1 bg-gray-200 hover:bg-gray-400 rounded dark:bg-gray-700 dark:hover:bg-gray-600"
+                    hx-on:click="this.parentElement.nextElementSibling.classList.toggle('hidden')">
+                    {{ i "ellipsis" "w-3 h-3" }}
+                </button>
+                {{ end }}
+            </div>
+            {{ if gt (len $messageParts) 1 }}
+            <p class="hidden mt-1 text-sm cursor-text pb-2 dark:text-gray-300">
+                {{ nl2br (index $messageParts 1) }}
+            </p>
+            {{ end }}
+        </div>
+        <div class="text-xs mt-2 text-gray-500 dark:text-gray-400 flex items-center flex-wrap">
+            {{ if .LastCommit.Author }}
+            {{ $authorDid := index .EmailToDid .LastCommit.Author.Email }}
+            <span class="flex items-center gap-1">
+                {{ if $authorDid }}
+                    {{ template "user/fragments/picHandleLink" $authorDid }}
+                {{ else }}
+                    {{ placeholderAvatar "tiny" }}
+                    <a href="mailto:{{ .LastCommit.Author.Email }}" class="no-underline hover:underline">{{ .LastCommit.Author.Name }}</a>
+                {{ end }}
+            </span>
+            <span class="px-1 select-none before:content-['\00B7']"></span>
+            {{ end }}
+            {{ template "repo/fragments/time" .LastCommitInfo.When }}
+            <span class="px-1 select-none before:content-['\00B7']"></span>
+            <span class="font-mono">
+                <a href="/{{ .RepoInfo.FullName }}/commit/{{ .LastCommitInfo.Hash.String }}"
+                   class="no-underline hover:underline text-gray-700 dark:text-gray-300 bg-gray-100 dark:bg-gray-900 px-2 py-1 rounded">
+                    {{ slice .LastCommitInfo.Hash.String 0 8 }}
+                </a>
+            </span>
+        </div>
+    </div>
+    {{ end }}
+
     <div class="pb-2 mb-3 text-base border-b border-gray-200 dark:border-gray-700">
         <div class="flex flex-col md:flex-row md:justify-between gap-2">
             <div id="breadcrumbs" class="overflow-x-auto whitespace-nowrap text-gray-400 dark:text-gray-500">
diff --git a/appview/repo/blob.go b/appview/repo/blob.go
index 16053828..b393dae4 100644
--- a/appview/repo/blob.go
+++ b/appview/repo/blob.go
@@ -9,17 +9,21 @@ import (
 	"path/filepath"
 	"slices"
 	"strings"
+	"time"
 
 	"tangled.org/core/api/tangled"
 	"tangled.org/core/appview/config"
+	"tangled.org/core/appview/db"
 	"tangled.org/core/appview/models"
 	"tangled.org/core/appview/pages"
 	"tangled.org/core/appview/pages/markup"
 	"tangled.org/core/appview/reporesolver"
 	xrpcclient "tangled.org/core/appview/xrpcclient"
+	"tangled.org/core/types"
 
 	indigoxrpc "github.com/bluesky-social/indigo/xrpc"
 	"github.com/go-chi/chi/v5"
+	"github.com/go-git/go-git/v5/plumbing"
 )
 
 // the content can be one of the following:
@@ -78,11 +82,34 @@ func (rp *Repo) Blob(w http.ResponseWriter, r *http.Request) {
 
 	user := rp.oauth.GetMultiAccountUser(r)
 
+	// Get email to DID mapping for commit author
+	var emails []string
+	if resp.LastCommit != nil && resp.LastCommit.Author != nil {
+		emails = append(emails, resp.LastCommit.Author.Email)
+	}
+	emailToDidMap, err := db.GetEmailToDid(rp.db, emails, true)
+	if err != nil {
+		l.Error("failed to get email to did mapping", "err", err)
+		emailToDidMap = make(map[string]string)
+	}
+
+	var lastCommitInfo *types.LastCommitInfo
+	if resp.LastCommit != nil {
+		when, _ := time.Parse(time.RFC3339, resp.LastCommit.When)
+		lastCommitInfo = &types.LastCommitInfo{
+			Hash:    plumbing.NewHash(resp.LastCommit.Hash),
+			Message: resp.LastCommit.Message,
+			When:    when,
+		}
+	}
+
 	rp.pages.RepoBlob(w, pages.RepoBlobParams{
 		LoggedInUser:    user,
 		RepoInfo:        rp.repoResolver.GetRepoInfo(r, user),
 		BreadCrumbs:     breadcrumbs,
 		BlobView:        blobView,
+		EmailToDid:      emailToDidMap,
+		LastCommitInfo:  lastCommitInfo,
 		RepoBlob_Output: resp,
 	})
 }
-- 
2.51.2