2 files changed, 81 insertions, 0 deletions
diff --git a/internal/resource/pkg/dnf.go b/internal/resource/pkg/dnf.go
new file mode 100644
index 0000000..ad03da2
--- /dev/null
+++ b/internal/resource/pkg/dnf.go
@@ -0,0 +1,34 @@
+package pkg
+
+import (
+	"fmt"
+	"log"
+
+	"codeberg.org/snonux/gonf/internal/exec"
+)
+
+func applyDNF(name string, ensure Ensure) error {
+	var args []string
+
+	switch ensure {
+	case PkgPresent:
+		args = []string{"install", "-y", name}
+	case PkgAbsent:
+		args = []string{"remove", "-y", name}
+	case PkgLatest:
+		args = []string{"install", "-y", name}
+	default:
+		log.Fatalf("unsupported ensure state: %v", ensure)
+	}
+
+	stdout, stderr, exitCode, err := exec.Run("dnf", args...)
+	if err != nil {
+		return fmt.Errorf("failed to execute dnf: %w", err)
+	}
+
+	if exitCode != 0 {
+		return fmt.Errorf("dnf failed with exit code %d: %s\n%s", exitCode, stdout, stderr)
+	}
+
+	return nil
+}
diff --git a/internal/resource/pkg/pkg.go b/internal/resource/pkg/pkg.go
new file mode 100644
index 0000000..72f098c
--- /dev/null
+++ b/internal/resource/pkg/pkg.go
@@ -0,0 +1,47 @@
+package pkg
+
+import (
+	"errors"
+	"os"
+)
+
+type Ensure int
+
+const (
+	PkgPresent Ensure = iota
+	PkgAbsent
+	PkgLatest
+)
+
+type applyFunc func(name string, ensure Ensure) error
+
+func Present(name string, ensure Ensure) error {
+	bin, err := detect()
+	if err != nil {
+		return err
+	}
+
+	var applyFunc applyFunc
+
+	switch bin {
+	case "dnf":
+		applyFunc = applyDNF
+	}
+
+	return applyFunc(name, ensure)
+}
+
+func detect() (string, error) {
+	switch {
+	case exists("/etc/fedora-release"):
+		fallthrough
+	case exists("/etc/rocky-release"):
+		return "dnf", nil
+	}
+	return "", errors.New("unable to detect package manager!")
+}
+
+func exists(path string) bool {
+	_, err := os.Stat(path)
+	return err == nil
+}