add a unit test

main.go

@@ -9,6 +9,7 @@ listing file.
 package main
 
 import (
+	"bytes"
 	"errors"
 	"fmt"
 	"io"
@@ -16,13 +17,16 @@ import (
 	"local/gziphttp"
 	"log"
 	"net/http"
+	"net/http/httptest"
 	"os"
 	"path"
+	"regexp"
 	"strings"
 )
 
 const (
 	ENDPOINT_UPLOAD = "__upload__"
+	ENDPOINT_DELETE = "__delete__"
 )
 
 var (
@@ -48,7 +52,7 @@ func main() {
 }
 
 func handler(d string) http.HandlerFunc {
-	return gzip(endpoints(fserve(d)))
+	return gzip(endpoints(withDel(fserve(d))))
 }
 
 func writeMeta(w http.ResponseWriter) {
@@ -90,7 +94,12 @@ func endpoints(foo http.HandlerFunc) http.HandlerFunc {
 			if err := upload(w, r); err != nil {
 				fmt.Fprintln(w, err.Error())
 			}
+		} else if isDeleted(r) {
+			if err := del(w, r); err != nil {
+				fmt.Fprintln(w, err.Error())
+			}
 		} else {
+			setContentTypeIfMedia(w, r)
 			foo(w, r)
 		}
 	}
@@ -100,10 +109,51 @@ func isUploaded(r *http.Request) bool {
 	return path.Base(r.URL.Path) == ENDPOINT_UPLOAD
 }
 
+func isDeleted(r *http.Request) bool {
+	return path.Base(r.URL.Path) == ENDPOINT_DELETE
+}
+
 func isDir(r *http.Request) bool {
 	d := toRealPath(r.URL.Path)
 	fi, err := os.Stat(d)
-	return err == nil && fi.IsDir()
+	if err != nil {
+		return false
+	}
+	if !fi.IsDir() {
+		return false
+	}
+	if _, err := os.Stat(path.Join(d, "index.html")); err == nil {
+		return false
+	}
+	return true
+}
+
+func withDel(foo http.HandlerFunc) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		if !isDir(r) {
+			foo(w, r)
+			return
+		}
+		fmt.Fprintln(w, `<a href=".."><input type="button" style="padding: .15em 4em .35em 4em" value=".."/></a>`+"\n")
+		w2 := httptest.NewRecorder()
+		foo(w2, r)
+		b := bytes.Split(w2.Body.Bytes(), []byte("\n"))
+		buff := bytes.NewBuffer(nil)
+		for i := range b {
+			if bytes.Contains(b[i], []byte("<a href=")) {
+				re := regexp.MustCompile(`href="[^"]*"`)
+				match := re.Find(b[i])
+				if len(match) > 0 {
+					match = bytes.Split(match, []byte(`href="`))[1]
+					match = match[:len(match)-1]
+					b[i] = []byte(fmt.Sprintf(`<a href="%s/%s"><input type="button" value="&#10060;" style="padding: .40em 1em .10em 1em; margin-right: .5em" onclick='return confirm("Delete "+%q+"?");'></input></a> %s`, match, ENDPOINT_DELETE, match, b[i]))
+				}
+			}
+			buff.Write(b[i])
+			buff.Write([]byte("\n"))
+		}
+		io.Copy(w, buff)
+	}
 }
 
 func fserve(d string) http.HandlerFunc {
@@ -134,7 +184,70 @@ func upload(w http.ResponseWriter, r *http.Request) error {
 	return nil
 }
 
+func del(w http.ResponseWriter, r *http.Request) error {
+	p := toRealPath(path.Dir(r.URL.Path))
+	_, err := os.Stat(p)
+	if err != nil {
+		return err
+	}
+	err = os.RemoveAll(p)
+	if err != nil {
+		return err
+	}
+	http.Redirect(w, r, path.Dir(path.Dir(r.URL.Path))+"/", http.StatusSeeOther)
+	return nil
+}
+
 func toRealPath(p string) string {
 	d := path.Join(fs.Get("d").GetString())
 	return path.Join(d, p)
 }
+
+func setContentTypeIfMedia(w http.ResponseWriter, r *http.Request) {
+	ext := strings.ToLower(path.Ext(r.URL.Path))
+	if i := strings.LastIndex(ext, "."); i != -1 {
+		ext = ext[i:]
+	}
+	switch ext {
+	case ".mp4":
+		w.Header().Set("Content-Type", "video/mp4")
+	case ".mkv":
+		w.Header().Set("Content-Type", "video/x-matroska")
+	case ".mp3":
+		w.Header().Set("Content-Type", "audio/mpeg3")
+	case ".epub", ".mobi":
+		w.Header().Set("Content-Disposition", "attachment")
+	case ".jpg", ".jpeg":
+		w.Header().Set("Content-Type", "image/jpeg")
+	case ".gif":
+		w.Header().Set("Content-Type", "image/gif")
+	case ".png":
+		w.Header().Set("Content-Type", "image/png")
+	case ".ico":
+		w.Header().Set("Content-Type", "image/x-icon")
+	case ".svg":
+		w.Header().Set("Content-Type", "image/svg+xml")
+	case ".css":
+		w.Header().Set("Content-Type", "text/css")
+	case ".js":
+		w.Header().Set("Content-Type", "text/javascript")
+	case ".json":
+		w.Header().Set("Content-Type", "application/json")
+	case ".html", ".htm":
+		w.Header().Set("Content-Type", "text/html")
+	case ".pdf":
+		w.Header().Set("Content-Type", "application/pdf")
+	case ".webm":
+		w.Header().Set("Content-Type", "video/webm")
+	case ".weba":
+		w.Header().Set("Content-Type", "audio/webm")
+	case ".webp":
+		w.Header().Set("Content-Type", "image/webp")
+	case ".zip":
+		w.Header().Set("Content-Type", "application/zip")
+	case ".7z":
+		w.Header().Set("Content-Type", "application/x-7z-compressed")
+	case ".tar":
+		w.Header().Set("Content-Type", "application/x-tar")
+	}
+}

main_test.go

@@ -0,0 +1,34 @@
+package main
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"testing"
+)
+
+func TestSetContentType(t *testing.T) {
+	t.Parallel()
+
+	cases := map[string]struct {
+		path string
+		want string
+	}{
+		"css with multi .": {
+			path: "/static/css/main.2145ce41.chunk.css",
+			want: "text/css",
+		},
+	}
+
+	for name, d := range cases {
+		c := d
+		t.Run(name, func(t *testing.T) {
+			r := &http.Request{URL: &url.URL{Path: c.path}}
+			w := httptest.NewRecorder()
+			setContentTypeIfMedia(w, r)
+			if ct := w.Header().Get("Content-Type"); ct != c.want {
+				t.Errorf("wrong content type: want %q, got %q", c.want, ct)
+			}
+		})
+	}
+}

public/_index.html

@@ -1 +0,0 @@
-hi