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package main
import (
"os"
"net/http"
"log"
"github.com/gotk3/gotk3/glib"
"github.com/gotk3/gotk3/gtk"
"context"
"sync"
"fmt"
)
func serve(port, dir string, wg *sync.WaitGroup) *http.Server {
mux := http.NewServeMux()
mux.Handle("/", http.FileServer(http.Dir(dir)))
server := &http.Server{Addr: ":" + port, Handler: mux}
go func() {
defer wg.Done()
if err := server.ListenAndServe(); err != http.ErrServerClosed {
// TODO: show error in GTK error window
log.Fatalf("ListenAndServe(): %v", err)
}
}()
return server
}
func main() {
app, _ := gtk.ApplicationNew("net.mikunonaka.fileserver", glib.APPLICATION_FLAGS_NONE)
app.Connect("activate", func() { onActivate(app) })
app.Run(os.Args)
}
func onActivate(app *gtk.Application) {
win, _ := gtk.ApplicationWindowNew(app)
win.SetTitle("HTTP File Server")
win.SetDefaultSize(400, 400)
box, _ := gtk.BoxNew(gtk.ORIENTATION_VERTICAL, 0)
dirBox, _ := gtk.BoxNew(gtk.ORIENTATION_HORIZONTAL, 0)
dirLabel, _ := gtk.LabelNew("Directory to serve: ")
dirBox.PackStart(dirLabel, false, false, 5)
dirInput, _ := gtk.EntryNew()
dirBox.PackEnd(dirInput, false, false, 5)
box.PackStart(dirBox, false, false, 5)
portBox, _ := gtk.BoxNew(gtk.ORIENTATION_HORIZONTAL, 0)
portLabel, _ := gtk.LabelNew("Port:")
portBox.PackStart(portLabel, false, false, 5)
portInput, _ := gtk.EntryNew()
portBox.PackEnd(portInput, false, false, 5)
box.PackStart(portBox, false, false, 5)
buttonBox, _ := gtk.BoxNew(gtk.ORIENTATION_HORIZONTAL, 0)
buttonSwitch, _ := gtk.ButtonNew()
buttonSwitch.SetLabel("Start")
buttonBox.PackStart(buttonSwitch, true, true, 0)
box.PackStart(buttonBox, false, false, 5)
statusLabel, _ := gtk.LabelNew("")
box.PackStart(statusLabel, false, true, 10)
var on = false
var server *http.Server
buttonSwitch.Connect("clicked", func() {
// TODO: validate dir and port
port, _ := portInput.GetText()
dir, _ := dirInput.GetText()
if on {
server.Shutdown(context.TODO())
} else {
go func() {
killServerDone := &sync.WaitGroup{}
server = serve(port, dir, killServerDone)
killServerDone.Add(1)
// do this after server starts
on = true
buttonSwitch.SetLabel("Stop")
statusLabel.SetText(fmt.Sprintf("Serving directory '%s' on PORT %s", dir, port))
killServerDone.Wait()
// do this after server shuts down
on = false
buttonSwitch.SetLabel("Start")
statusLabel.SetText("")
}()
}
})
win.Add(box)
win.ShowAll()
}
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