refactor: refactor pgp implementation

This commit refactors the internal PGP implementation to make way for
GPG integration.

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>

1 files changed, 28 insertions, 0 deletions

diff --git a/lib/crypto/crypto.go b/lib/crypto/crypto.go
new file mode 100644
index 0000000..47cb954
--- /dev/null
+++ b/lib/crypto/crypto.go
@@ -0,0 +1,28 @@
+package crypto
+
+import (
+	"bytes"
+	"io"
+	"log"
+
+	"git.sr.ht/~rjarry/aerc/lib/crypto/pgp"
+	"git.sr.ht/~rjarry/aerc/models"
+	"github.com/ProtonMail/go-crypto/openpgp"
+	"github.com/emersion/go-message/mail"
+)
+
+type Provider interface {
+	Decrypt(io.Reader, openpgp.PromptFunction) (*models.MessageDetails, error)
+	Encrypt(*bytes.Buffer, []string, string, openpgp.PromptFunction, *mail.Header) (io.WriteCloser, error)
+	Sign(*bytes.Buffer, string, openpgp.PromptFunction, *mail.Header) (io.WriteCloser, error)
+	ImportKeys(io.Reader) error
+	Init(*log.Logger) error
+	Close()
+}
+
+func New(s string) Provider {
+	switch s {
+	default:
+		return &pgp.Mail{}
+	}
+}