appview/repo/tags: add link to auto-generated source archive

Signed-off-by: Winter <[e-mail]>

appview/pages/funcmap.go

···
 		},
 		"cssContentHash": CssContentHash,
 		"fileTree":       filetree.FileTree,
+		"pathEscape": func(s string) string {
+			return url.PathEscape(s)
+		},
 		"pathUnescape": func(s string) string {
 			u, _ := url.PathUnescape(s)
 			return u

appview/pages/templates/repo/tags.html

···
   {{ $isPushAllowed := $root.RepoInfo.Roles.IsPushAllowed }}
   {{ $artifacts := index $root.ArtifactMap $tag.Tag.Hash }}
 
-  {{ if or (gt (len $artifacts) 0) $isPushAllowed }}
   <h2 class="my-4 text-sm text-left text-gray-700 dark:text-gray-300 uppercase font-bold">artifacts</h2>
   <div class="flex flex-col rounded border border-gray-200 dark:border-gray-700">
     {{ range $artifact := $artifacts }}
       {{ $args := dict "LoggedInUser" $root.LoggedInUser "RepoInfo" $root.RepoInfo "Artifact" $artifact }}
       {{ template "repo/fragments/artifact" $args }}
     {{ end }}
+    <div id="artifact-git-source" class="flex items-center justify-between p-2 border-b border-gray-200 dark:border-gray-700">
+      <div id="left-side" class="flex items-center gap-2 min-w-0 max-w-[60%]">
+        {{ i "archive" "w-4 h-4" }}
+        <a href="/{{ $root.RepoInfo.FullName }}/archive/{{ pathEscape (print "refs/tags/" $tag.Name) }}" class="no-underline hover:no-underline">
+            Source code (.tar.gz)
+        </a>
+      </div>
+    </div>
     {{ if $isPushAllowed }}
       {{ block "uploadArtifact" (list $root $tag) }} {{ end }}
     {{ end }}
   </div>
-  {{ end }}
 {{ end }}
 
 {{ define "uploadArtifact" }}

appview/repo/repo.go

···
 	}
 }
 
+func (rp *Repo) DownloadArchive(w http.ResponseWriter, r *http.Request) {
+	refParam := chi.URLParam(r, "ref")
+	f, err := rp.repoResolver.Resolve(r)
+	if err != nil {
+		log.Println("failed to get repo and knot", err)
+		return
+	}
+
+	var uri string
+	if rp.config.Core.Dev {
+		uri = "http"
+	} else {
+		uri = "https"
+	}
+	url := fmt.Sprintf("%s://%s/%s/%s/archive/%s.tar.gz", uri, f.Knot, f.OwnerDid(), f.RepoName, url.PathEscape(refParam))
+
+	http.Redirect(w, r, url, http.StatusFound)
+}
+
 func (rp *Repo) RepoLog(w http.ResponseWriter, r *http.Request) {
 	f, err := rp.repoResolver.Resolve(r)
 	if err != nil {

appview/repo/router.go

···
 	r.Get("/blob/{ref}/*", rp.RepoBlob)
 	r.Get("/raw/{ref}/*", rp.RepoBlobRaw)
 
+	// intentionally doesn't use /* as this isn't
+	// a file path
+	r.Get("/archive/{ref}", rp.DownloadArchive)
+
 	r.Route("/fork", func(r chi.Router) {
 		r.Use(middleware.AuthMiddleware(rp.oauth))
 		r.Get("/", rp.ForkRepo)