1 files changed, 49 insertions, 0 deletions
diff --git a/internal/secrets/secrets.go b/internal/secrets/secrets.go
new file mode 100644
index 0000000..684456f
--- /dev/null
+++ b/internal/secrets/secrets.go
@@ -0,0 +1,49 @@
+package secrets
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"path"
+	"strings"
+
+	"filippo.io/age"
+)
+
+func DecryptSecret(secret string) (string, error) {
+	homepath, err := os.UserHomeDir()
+	if err != nil {
+		fmt.Println("could not get home dir")
+		os.Exit(1)
+	}
+
+	sshFolder := path.Join(homepath, ".ssh")
+	entries, err := os.ReadDir(sshFolder)
+
+	var identities []*age.X25519Identity
+	for _, file := range entries {
+		if !strings.HasSuffix(".pub", file.Name()) {
+			keybytes, err := os.ReadFile(path.Join(sshFolder, file.Name()))
+			identity, err := age.ParseX25519Identity(strings.TrimSpace(string(keybytes)))
+			if err != nil {
+				continue
+			}
+			identities = append(identities, identity)
+		}
+	}
+
+	if len(identities) == 0 {
+		return "", fmt.Errorf("could not parse any identities")
+	}
+
+	for _, id := range identities {
+		result, err := age.Decrypt(strings.NewReader(secret), id)
+		if err != nil {
+			continue
+		}
+		b, _ := io.ReadAll(result)
+		return string(b), nil
+	}
+
+	return "", fmt.Errorf("could not find identity")
+}