Implement initial entry adding (partial, missing notes support)

src/offline/add.go

@@ -5,6 +5,7 @@ import (
 	"os"
 )
 
+// AddFolder creates a new directory at targetLocation
 func AddFolder(targetLocation string) {
 	// create the directory specified by targetLocation
 	err := os.Mkdir(targetLocation, 0700)
@@ -20,3 +21,13 @@ func AddFolder(targetLocation string) {
 	// TODO If in online mode, create the directory on the server
 	os.Exit(0)
 }
+
+// WriteEntry writes entryData to an encrypted file at targetLocation
+func WriteEntry(targetLocation string, entryData []string) {
+	encryptedBytes := EncryptGPG(entryData)
+	err := os.WriteFile(targetLocation, encryptedBytes, 0600)
+	if err != nil {
+		fmt.Println(AnsiError + "Failed to write to file: " + err.Error() + AnsiReset)
+		os.Exit(1)
+	}
+}

src/offline/gpg.go

@@ -24,3 +24,16 @@ func DecryptGPG(targetLocation string) []string {
 	}
 	return outputSlice
 }
+
+// EncryptGPG encrypts a slice of strings using GPG and returns the encrypted data as a byte slice
+func EncryptGPG(input []string) []byte {
+	ReadConfig()
+	cmd := exec.Command("gpg", "-q", "-r", Config["gpgID"].(string), "-e")
+	writeToStdin(cmd, strings.Join(input, "\n"))
+	encryptedBytes, err := cmd.Output()
+	if err != nil {
+		fmt.Println(AnsiError + "Failed to encrypt data - ensure that your GPG key is valid and that you have a valid GPG ID set in libmutton.ini" + AnsiReset)
+		os.Exit(1)
+	}
+	return encryptedBytes
+}