fix(unlock cmd): get user confirmation in case an instance is still running

cmd/unlock.go

@@ -1,6 +1,11 @@
 package cmd
 
 import (
+	"bytes"
+	"fmt"
+	"os/exec"
+	"strings"
+
 	"github.com/cupcakearmy/autorestic/internal"
 	"github.com/cupcakearmy/autorestic/internal/colors"
 	"github.com/cupcakearmy/autorestic/internal/lock"
@@ -9,11 +14,22 @@ import (
 
 var unlockCmd = &cobra.Command{
 	Use:   "unlock",
-	Short: "Unlock autorestic only if you are sure that no other instance is running (ps aux | grep autorestic)",
+	Short: "Unlock autorestic only if you are sure that no other instance is running",
 	Long: `Unlock autorestic only if you are sure that no other instance is running.
 To check you can run "ps aux | grep autorestic".`,
 	Run: func(cmd *cobra.Command, args []string) {
 		internal.GetConfig()
+
+		if isAutoresticRunning() {
+			colors.Error.Print("Another autorestic instance is running. Are you sure you want to unlock? (yes/no): ")
+			var response string
+			fmt.Scanln(&response)
+			if strings.ToLower(response) != "yes" {
+				colors.Primary.Println("Unlocking aborted.")
+				return
+			}
+		}
+
 		err := lock.Unlock()
 		if err != nil {
 			colors.Error.Println("Could not unlock:", err)
@@ -27,3 +43,34 @@ To check you can run "ps aux | grep autorestic".`,
 func init() {
 	rootCmd.AddCommand(unlockCmd)
 }
+
+// isAutoresticRunning checks if autorestic is running
+// and returns true if it is.
+// It also prints the processes to stdout.
+func isAutoresticRunning() bool {
+	cmd := exec.Command("sh", "-c", "ps aux | grep autorestic")
+	var out bytes.Buffer
+	cmd.Stdout = &out
+	err := cmd.Run()
+	if err != nil {
+		return false
+	}
+
+	lines := strings.Split(out.String(), "\n")
+	autoresticProcesses := []string{}
+
+	for _, line := range lines {
+		if strings.Contains(line, "autorestic") && !strings.Contains(line, "grep autorestic") {
+			autoresticProcesses = append(autoresticProcesses, line)
+		}
+	}
+
+	if len(autoresticProcesses) > 0 {
+		colors.Faint.Println("Found autorestic processes:")
+		for _, proc := range autoresticProcesses {
+			colors.Faint.Println(proc)
+		}
+		return true
+	}
+	return false
+}