add groupPresent

ingredients/group/groupPresent.go

@@ -0,0 +1,73 @@
+package group
+
+import (
+	"context"
+	"errors"
+	"os/exec"
+	"os/user"
+
+	"github.com/gogrlx/grlx/types"
+)
+
+func (g Group) present(ctx context.Context, test bool) (types.Result, error) {
+	var result types.Result
+
+	groupName, ok := g.params["name"].(string)
+	if groupName == "" || !ok {
+		result.Failed = true
+		result.Succeeded = false
+		return result, errors.New("invalid user; name must be a string")
+	}
+	args := []string{groupName}
+
+	gid := ""
+	if gidInter, ok := g.params["gid"]; ok {
+		gid, ok = gidInter.(string)
+	}
+	if gid != "" {
+		args = append(args, "-g"+gid)
+	}
+
+	groupByName, err := user.LookupGroup(groupName)
+	if err != nil {
+		cmd := exec.CommandContext(ctx, "groupadd", args...)
+		if test {
+			result.Succeeded = true
+			result.Failed = false
+			result.Changed = true
+			result.Notes = append(result.Notes, types.SimpleNote("would have added a group by executing: "+cmd.String()))
+			return result, nil
+		}
+		err = cmd.Run()
+		if err != nil {
+			result.Failed = true
+			result.Succeeded = false
+			return result, err
+		}
+		result.Changed = true
+		return result, nil
+	}
+	if groupByName.Gid != gid {
+		cmd := exec.CommandContext(ctx, "groupmod", args...)
+		if test {
+			result.Succeeded = true
+			result.Failed = false
+			result.Changed = true
+			result.Notes = append(result.Notes, types.SimpleNote("would have modified the existing group by executing: "+cmd.String()))
+			return result, nil
+		}
+		err = cmd.Run()
+		if err != nil {
+			result.Failed = true
+			result.Succeeded = false
+			return result, err
+		}
+		result.Changed = true
+		return result, nil
+	}
+	result.Succeeded = true
+	result.Failed = false
+	result.Changed = false
+	result.Notes = append(result.Notes, types.SimpleNote("group already exists"))
+	return result, nil
+}