feat: migrate to golang

internal/service/service_linux.go

@@ -0,0 +1,113 @@
+//go:build linux
+
+package service
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+)
+
+func newPlatformManager(configDir string) (platformManager, error) {
+	return &linuxServiceManager{configDir: configDir}, nil
+}
+
+// linuxServiceManager manages services via systemd. Direct port of
+// LinuxServiceManager in service_manager.py.
+type linuxServiceManager struct {
+	configDir string
+}
+
+func (l *linuxServiceManager) serviceFilePath(name string) string {
+	return filepath.Join("/etc/systemd/system", name+".service")
+}
+
+func (l *linuxServiceManager) createServiceFile(cfg Config) error {
+	execStart := cfg.ExecutablePath
+	if cfg.Args != "" {
+		execStart += " " + cfg.Args
+	}
+
+	description := cfg.Description
+	if description == "" {
+		description = cfg.Name
+	}
+
+	content := fmt.Sprintf(`[Unit]
+Description=%s
+After=network.target
+
+[Service]
+Type=simple
+ExecStart=%s
+Restart=always
+RestartSec=10
+User=root
+
+[Install]
+WantedBy=multi-user.target
+`, description, execStart)
+
+	servicePath := l.serviceFilePath(cfg.Name)
+	if err := os.WriteFile(servicePath, []byte(content), 0o644); err != nil {
+		return fmt.Errorf("failed to create service file: %w", err)
+	}
+	return nil
+}
+
+func (l *linuxServiceManager) Install(cfg Config) error {
+	if err := l.createServiceFile(cfg); err != nil {
+		return err
+	}
+
+	if out, err := exec.Command("systemctl", "daemon-reload").CombinedOutput(); err != nil {
+		return fmt.Errorf("failed to install service: %s", out)
+	}
+	if out, err := exec.Command("systemctl", "enable", cfg.Name).CombinedOutput(); err != nil {
+		return fmt.Errorf("failed to install service: %s", out)
+	}
+	if out, err := exec.Command("systemctl", "start", cfg.Name).CombinedOutput(); err != nil {
+		return fmt.Errorf("failed to install service: %s", out)
+	}
+	return nil
+}
+
+func (l *linuxServiceManager) Uninstall(name string) error {
+	exec.Command("systemctl", "stop", name).Run()
+
+	if out, err := exec.Command("systemctl", "disable", name).CombinedOutput(); err != nil {
+		return fmt.Errorf("failed to uninstall service: %s", out)
+	}
+
+	servicePath := l.serviceFilePath(name)
+	if _, err := os.Stat(servicePath); err == nil {
+		os.Remove(servicePath)
+	}
+
+	if out, err := exec.Command("systemctl", "daemon-reload").CombinedOutput(); err != nil {
+		return fmt.Errorf("failed to uninstall service: %s", out)
+	}
+	return nil
+}
+
+func (l *linuxServiceManager) Start(name string) error {
+	if out, err := exec.Command("systemctl", "start", name).CombinedOutput(); err != nil {
+		return fmt.Errorf("failed to start service: %s", out)
+	}
+	return nil
+}
+
+func (l *linuxServiceManager) Stop(name string) error {
+	if out, err := exec.Command("systemctl", "stop", name).CombinedOutput(); err != nil {
+		return fmt.Errorf("failed to stop service: %s", out)
+	}
+	return nil
+}
+
+func (l *linuxServiceManager) Restart(name string) error {
+	if out, err := exec.Command("systemctl", "restart", name).CombinedOutput(); err != nil {
+		return fmt.Errorf("failed to restart service: %s", out)
+	}
+	return nil
+}