go rewrite

internal/utils.go

@@ -0,0 +1,48 @@
+package internal
+
+import (
+	"bytes"
+	"fmt"
+	"os"
+	"os/exec"
+)
+
+func CheckIfCommandIsCallable(cmd string) bool {
+	_, err := exec.LookPath(cmd)
+	return err == nil
+}
+
+func CheckIfResticIsCallable() bool {
+	return CheckIfCommandIsCallable("restic")
+}
+
+type ExecuteOptions struct {
+	Command string
+	Envs    map[string]string
+	Dir     string
+}
+
+func ExecuteCommand(options ExecuteOptions, args ...string) (string, error) {
+	cmd := exec.Command(options.Command, args...)
+	env := os.Environ()
+	for k, v := range options.Envs {
+		env = append(env, fmt.Sprintf("%s=%s", k, v))
+	}
+	cmd.Env = env
+	cmd.Dir = options.Dir
+
+	var out bytes.Buffer
+	var error bytes.Buffer
+	cmd.Stdout = &out
+	cmd.Stderr = &error
+	err := cmd.Run()
+	if err != nil {
+		return error.String(), err
+	}
+	return out.String(), nil
+}
+
+func ExecuteResticCommand(options ExecuteOptions, args ...string) (string, error) {
+	options.Command = "restic"
+	return ExecuteCommand(options, args...)
+}