setup project with daemon, socket, cmd, air, notifying, state

internal/bus/bus.go

@@ -0,0 +1,57 @@
+package bus
+
+import (
+	"bufio"
+	"net"
+	"os"
+	"path/filepath"
+)
+
+const SockName = "control.sock"
+const ProtoVer = "0.1"
+
+// ~/.cache/hyprvoice/control.sock
+func SockPath() (string, error) {
+	dir, err := os.UserCacheDir()
+	if err != nil {
+		return "", err
+	}
+	hd := filepath.Join(dir, "hyprvoice")
+	return filepath.Join(hd, SockName), nil
+}
+
+func Listen() (net.Listener, error) {
+	sp, err := SockPath()
+	if err != nil {
+		return nil, err
+	}
+	if err := os.MkdirAll(filepath.Dir(sp), 0o700); err != nil {
+		return nil, err
+	}
+	_ = os.Remove(sp) // stale socket from last run
+	return net.Listen("unix", sp)
+}
+
+func Dial() (net.Conn, error) {
+	sp, err := SockPath()
+	if err != nil {
+		return nil, err
+	}
+	return net.Dial("unix", sp)
+}
+
+func SendCommand(cmd byte) (string, error) {
+	c, err := Dial()
+	if err != nil {
+		return "", err
+	}
+	defer c.Close()
+
+	_, err = c.Write([]byte{cmd, '\n'})
+	if err != nil {
+		return "", err
+	}
+
+	resp, err := bufio.NewReader(c).ReadString('\n')
+	return resp, err
+}

internal/bus/bus_test.go

@@ -0,0 +1,9 @@
+package bus
+
+import "testing"
+
+func TestSockPath(t *testing.T) {
+	if _, err := SockPath(); err != nil {
+		t.Fatalf("SockPath: %v", err)
+	}
+}

internal/hotkeydaemon/daemon.go

@@ -0,0 +1,80 @@
+package hotkeydaemon
+
+import (
+	"bufio"
+	"fmt"
+	"net"
+	"sync"
+	"time"
+
+	"github.com/leonardotrapani/hyprvoice/internal/bus"
+	"github.com/leonardotrapani/hyprvoice/internal/notify"
+)
+
+type Daemon struct {
+	mu        sync.Mutex
+	recording bool
+	notifier  notify.Notifier
+}
+
+func New(n notify.Notifier) *Daemon {
+	if n == nil {
+		n = notify.Desktop{}
+	}
+	return &Daemon{
+		notifier: n,
+	}
+}
+
+func (d *Daemon) Rec() bool {
+	d.mu.Lock()
+	defer d.mu.Unlock()
+	return d.recording
+}
+
+func (d *Daemon) Run() error {
+	ln, err := bus.Listen()
+	if err != nil {
+		return err
+	}
+	for {
+		c, err := ln.Accept()
+		if err != nil {
+			continue
+		}
+		go d.handle(c)
+	}
+}
+
+func (d *Daemon) handle(c net.Conn) {
+	defer c.Close()
+
+	line, _ := bufio.NewReader(c).ReadString('\n')
+	if len(line) == 0 {
+		fmt.Fprint(c, "ERR empty\n")
+		return
+	}
+	cmd := line[0]
+
+	d.mu.Lock()
+	defer d.mu.Unlock()
+
+	switch cmd {
+	case 't': // toggle
+		d.recording = !d.recording
+		d.notifier.RecordingChanged(d.recording)
+		fmt.Fprintf(c, "STATUS recording=%t\n", d.recording)
+	case 's': // status
+		fmt.Fprintf(c, "STATUS recording=%t\n", d.recording)
+	case 'v': // protocol version
+		fmt.Fprintf(c, "STATUS proto=%s\n", bus.ProtoVer)
+	case 'q': // quit daemon
+		fmt.Fprint(c, "OK quitting\n")
+		go func() {
+			time.Sleep(100 * time.Millisecond) // give time for client to read
+			panic("daemon exit requested")
+		}()
+	default:
+		fmt.Fprintf(c, "ERR unknown=%q\n", cmd)
+	}
+}

internal/hotkeydaemon/deamon_test.go

@@ -0,0 +1,29 @@
+package hotkeydaemon
+
+import (
+	"testing"
+	"time"
+
+	"github.com/leonardotrapani/hyprvoice/internal/bus"
+	"github.com/leonardotrapani/hyprvoice/internal/notify"
+)
+
+func TestToggle(t *testing.T) {
+	d := New(notify.Nop{})
+	go d.Run()
+	time.Sleep(50 * time.Millisecond) // give listener time to start
+	defer bus.SendCommand('q')
+
+	if out, _ := bus.SendCommand('t'); out != "STATUS recording=true\n" {
+		t.Fatalf("unexpected: %s", out)
+	}
+	if !d.Rec() {
+		t.Fatalf("state should be true after first toggle")
+	}
+	if out, _ := bus.SendCommand('t'); out != "STATUS recording=false\n" {
+		t.Fatalf("unexpected: %s", out)
+	}
+	if d.Rec() {
+		t.Fatalf("state should be false after second toggle")
+	}
+}

internal/notify/notify.go

@@ -0,0 +1,33 @@
+package notify
+
+import (
+	"fmt"
+	"os/exec"
+)
+
+type Notifier interface {
+	RecordingChanged(on bool)
+	Error(msg string)
+}
+
+type Desktop struct{}
+
+func (Desktop) RecordingChanged(on bool) {
+	state := "Stopped"
+	if on {
+		state = "Started"
+	}
+	exec.Command("notify-send", "-a", "Hyprvoice",
+		fmt.Sprintf("Hyprvoice: %s Recording", state)).Run()
+}
+
+func (Desktop) Error(msg string) {
+	exec.Command("notify-send", "-a", "Hyprvoice", "-u", "critical", msg).Run()
+}
+
+// Nop is a Notifier that does absolutely nothing.
+// Useful in unit tests or headless builds.
+type Nop struct{}
+
+func (Nop) RecordingChanged(on bool) {}
+func (Nop) Error(msg string)         {}