From a2abfc596965111c28ea43d9ab986732692e022f Mon Sep 17 00:00:00 2001
From: Nguyễn Gia Phong <mcsinyx@disroot.org>
Date: Tue, 28 Jun 2022 17:49:14 +0900
Subject: Write response as soon as data is ready

Previously the entire archive had to be read before the template
is executed, thus large archives takes forever to render
from slow backing FS.
---
 main.go | 29 ++++++++++++++---------------
 1 file changed, 14 insertions(+), 15 deletions(-)

(limited to 'main.go')

diff --git a/main.go b/main.go
index b364d20..dfc01a5 100644
--- a/main.go
+++ b/main.go
@@ -48,7 +48,6 @@ type Archive struct {
 	Title   string
 	Prev    string
 	Next    string
-	Entries []Page
 }
 
 // Type Directory represents a library directory in file system.
@@ -147,7 +146,17 @@ func main() {
 		// Render archive page
 		entries, _ := os.ReadDir(path.Join(p, ".."))
 		index := find(entries, stat.Name())
-		var pages []Page
+		prev := ""
+		if index > 0 {
+			prev = entries[index-1].Name()
+		}
+		next := ""
+		if index < len(entries)-1 {
+			next = entries[index+1].Name()
+		}
+		t.ExecuteTemplate(w, "archive-head.html",
+			Archive{ stat.Name(), prev, next })
+
 		for i, f := range cbz.File {
 			image, _ := cbz.File[i].Open()
 			defer image.Close()
@@ -155,21 +164,11 @@ func main() {
 			n, _ := image.Read(buf)
 			mime := http.DetectContentType(buf[:n])
 			if strings.HasPrefix(mime, "image/") {
-				pages = append(pages, Page{i, f.Name})
+				t.ExecuteTemplate(w, "archive-page.html",
+					Page{i, f.Name})
 			}
 		}
-
-		prev := ""
-		if index > 0 {
-			prev = entries[index-1].Name()
-		}
-		next := ""
-		if index < len(entries)-1 {
-			next = entries[index+1].Name()
-		}
-		t.ExecuteTemplate(w, "archive.html", Archive{
-			stat.Name(), prev, next, pages,
-		})
+		t.ExecuteTemplate(w, "archive-foot.html", nil)
 	})
 
 	addr := os.Getenv("PHYLACTERY_ADDRESS")
-- 
cgit 1.4.1