From 6857a2f002358c47f588c8417482a5afd01725d0 Mon Sep 17 00:00:00 2001
From: Anirudh Oppiliappan <x@icyphox.sh>
Date: Sun, 11 Dec 2022 12:29:50 +0530
Subject: [PATCH] routes: split repo index and files views

---
 routes/handler.go |  4 ++--
 routes/routes.go  | 48 +++++++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 48 insertions(+), 4 deletions(-)

diff --git a/routes/handler.go b/routes/handler.go
index 13e4ae4..e00d412 100644
--- a/routes/handler.go
+++ b/routes/handler.go
@@ -8,7 +8,7 @@ import (
 func Handlers(c *config.Config) *flow.Mux {
 	mux := flow.New()
 	d := deps{c}
-	mux.HandleFunc("/:name", d.Repo, "GET")
-	mux.HandleFunc("/:name/tree/...", d.Repo, "GET")
+	mux.HandleFunc("/:name", d.RepoIndex, "GET")
+	mux.HandleFunc("/:name/tree/:ref/...", d.RepoFiles, "GET")
 	return mux
 }
diff --git a/routes/routes.go b/routes/routes.go
index da75009..cf2409f 100644
--- a/routes/routes.go
+++ b/routes/routes.go
@@ -8,6 +8,7 @@ import (
 
 	"github.com/alexedwards/flow"
 	gogit "github.com/go-git/go-git/v5"
+	"github.com/go-git/go-git/v5/plumbing"
 	"icyphox.sh/legit/config"
 	"icyphox.sh/legit/git"
 )
@@ -16,9 +17,39 @@ type deps struct {
 	c *config.Config
 }
 
-func (d *deps) Repo(w http.ResponseWriter, r *http.Request) {
+func (d *deps) RepoIndex(w http.ResponseWriter, r *http.Request) {
+	name := flow.Param(r.Context(), "name")
+	name = filepath.Clean(name)
+	// TODO: remove .git
+	path := filepath.Join(d.c.Git.ScanPath, name+".git")
+	repo, err := gogit.PlainOpen(path)
+	if err != nil {
+		Write404(w, *d.c)
+		return
+	}
+
+	head, err := repo.Head()
+	if err != nil {
+		Write500(w, *d.c)
+		log.Println(err)
+		return
+	}
+
+	files, err := git.FilesAtRef(repo, head.Hash(), "")
+	if err != nil {
+		Write500(w, *d.c)
+		log.Println(err)
+		return
+	}
+
+	d.renderFiles(files, w)
+	return
+}
+
+func (d *deps) RepoFiles(w http.ResponseWriter, r *http.Request) {
 	name := flow.Param(r.Context(), "name")
 	treePath := flow.Param(r.Context(), "...")
+	ref := flow.Param(r.Context(), "ref")
 
 	name = filepath.Clean(name)
 	// TODO: remove .git
@@ -29,12 +60,25 @@ func (d *deps) Repo(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	files, err := git.FilesAtHead(repo, treePath)
+	hash, err := repo.ResolveRevision(plumbing.Revision(ref))
 	if err != nil {
 		Write500(w, *d.c)
 		log.Println(err)
+		return
 	}
 
+	files, err := git.FilesAtRef(repo, *hash, treePath)
+	if err != nil {
+		Write500(w, *d.c)
+		log.Println(err)
+		return
+	}
+
+	d.renderFiles(files, w)
+	return
+}
+
+func (d *deps) renderFiles(files []git.NiceTree, w http.ResponseWriter) {
 	tpath := filepath.Join(d.c.Template.Dir, "*")
 	t := template.Must(template.ParseGlob(tpath))