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// Server entry point
// Copyright (C) 2022 Nguyễn Gia Phong
//
// This file is part of Phylactery.
//
// Phylactery is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Phylactery is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with Phylactery. If not, see <https://www.gnu.org/licenses/>.
package main
import (
"archive/zip"
"embed"
"html/template"
"log"
"io"
"net/http"
"os"
"path"
"strconv"
"strings"
)
//go:embed static/*
var static embed.FS
//go:embed templates/*.html
var templates embed.FS
type Page struct {
Index int
Name string
}
type Archive struct {
Path string
Title string
Entries []Page
}
func main() {
http.Handle("/static/", http.FileServer(http.FS(static)))
t, err := template.ParseFS(templates, "templates/*.html")
if err != nil {
log.Fatal(err)
}
lib := os.Getenv("PHYLACTERY_LIBRARY")
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
p := path.Clean(lib + r.URL.Path)
stat, err := os.Stat(p)
if err != nil {
http.NotFound(w, r)
return
}
if stat.IsDir() {
// TODO
}
// TODO: LRU caching
cbz, err := zip.OpenReader(p)
if err != nil {
http.Error(w, "invalid cbz", 406)
return
}
defer cbz.Close()
r.ParseForm()
if entry, isImage := r.Form["entry"]; isImage {
i, err := strconv.Atoi(entry[0])
if err != nil || i < 0 || i >= len(cbz.File) {
http.NotFound(w, r)
return
}
image, _ := cbz.File[i].Open()
defer image.Close()
io.Copy(w, image)
return
}
var pages []Page
for i, f := range cbz.File {
image, _ := cbz.File[i].Open()
defer image.Close()
buf := make([]byte, 512)
n, _ := image.Read(buf)
mime := http.DetectContentType(buf[:n])
if strings.HasPrefix(mime, "image/") {
pages = append(pages, Page{ i, f.Name })
}
}
archive := Archive{ r.URL.Path, stat.Name(), pages }
t.ExecuteTemplate(w, "archive.html", archive)
})
addr := os.Getenv("PHYLACTERY_ADDRESS")
log.Println("Listening on", addr)
log.Fatal(http.ListenAndServe(addr, nil))
}
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