feat: migrate to vue 3 (#2689)

---------

Co-authored-by: Joep <jcbuhre@gmail.com>
Co-authored-by: Omar Hussein <omarmohammad1951@gmail.com>
Co-authored-by: Oleg Lobanov <oleg@lobanov.me>

http/http.go

@@ -85,6 +85,7 @@ func NewHandler(
 		Handler(monkey(previewHandler(imgSvc, fileCache, server.EnableThumbnails, server.ResizePreview), "/api/preview")).Methods("GET")
 	api.PathPrefix("/command").Handler(monkey(commandsHandler, "/api/command")).Methods("GET")
 	api.PathPrefix("/search").Handler(monkey(searchHandler, "/api/search")).Methods("GET")
+	api.PathPrefix("/subtitle").Handler(monkey(subtitleHandler, "/api/subtitle")).Methods("GET")
 
 	public := api.PathPrefix("/public").Subrouter()
 	public.PathPrefix("/dl").Handler(monkey(publicDlHandler, "/api/public/dl/")).Methods("GET")

http/subtitle.go

@@ -0,0 +1,87 @@
+package http
+
+import (
+	"bytes"
+	"net/http"
+	"strings"
+
+	"github.com/asticode/go-astisub"
+
+	"github.com/filebrowser/filebrowser/v2/files"
+)
+
+var subtitleHandler = withUser(func(w http.ResponseWriter, r *http.Request, d *data) (int, error) {
+	if !d.user.Perm.Download {
+		return http.StatusAccepted, nil
+	}
+
+	file, err := files.NewFileInfo(files.FileOptions{
+		Fs:         d.user.Fs,
+		Path:       r.URL.Path,
+		Modify:     d.user.Perm.Modify,
+		Expand:     false,
+		ReadHeader: d.server.TypeDetectionByHeader,
+		Checker:    d,
+	})
+	if err != nil {
+		return errToStatus(err), err
+	}
+
+	// TODO: no idea what this does
+	// if files.IsNamedPipe(file.Mode) {
+	// 	setContentDisposition(w, r, file)
+	// 	return 0, nil
+	// }
+
+	if file.IsDir {
+		return http.StatusBadRequest, nil
+	}
+
+	return subtitleFileHandler(w, r, file)
+})
+
+func subtitleFileHandler(w http.ResponseWriter, r *http.Request, file *files.FileInfo) (int, error) {
+	// if its not a subtitle file, reject
+	if !files.IsSupportedSubtitle(file.Name) {
+		return http.StatusBadRequest, nil
+	}
+
+	fd, err := file.Fs.Open(file.Path)
+	if err != nil {
+		return http.StatusInternalServerError, err
+	}
+	defer fd.Close()
+
+	// load subtitle for conversion to vtt
+	var sub *astisub.Subtitles
+	if strings.HasSuffix(file.Name, ".srt") {
+		sub, err = astisub.ReadFromSRT(fd)
+	} else if strings.HasSuffix(file.Name, ".ass") || strings.HasSuffix(file.Name, ".ssa") {
+		sub, err = astisub.ReadFromSSA(fd)
+	}
+	if err != nil {
+		return http.StatusInternalServerError, err
+	}
+
+	// TODO: not sure if this is needed here
+	setContentDisposition(w, r, file)
+	w.Header().Add("Content-Security-Policy", `script-src 'none';`)
+	w.Header().Set("Cache-Control", "private")
+	// force type to text/vtt
+	w.Header().Set("Content-Type", "text/vtt")
+
+	// serve vtt file directly
+	if sub == nil {
+		http.ServeContent(w, r, file.Name, file.ModTime, fd)
+		return 0, nil
+	}
+
+	// convert others to vtt and serve from buffer
+	var buf = &bytes.Buffer{}
+	err = sub.WriteToWebVTT(buf)
+	if err != nil {
+		return http.StatusInternalServerError, err
+	}
+	http.ServeContent(w, r, file.Name, file.ModTime, bytes.NewReader(buf.Bytes()))
+	return 0, nil
+}