Convert from BoltDB to Maildir storage for emails

internal/store/spool.go

@@ -5,40 +5,47 @@ import (
 	"io"
 	"io/ioutil"
 	"log"
-	"net/mail"
+	//	"net/mail"
+
+	"golang.org/x/sync/errgroup"
 )
 
 type SpoolInterface interface {
 	SpoolMessage([]Account, io.Reader) error
 }
 
-// FIXME: we don't actually spool for now, we just store it to each user's
-// mailbox. This might lead to oddness in the partial delivery case.
+func (c *concrete) deliver(account Account, data []byte) error {
+	// FIXME: this could be a FindOrCreateMaildir call for atomic create?
+	maildir, err := c.FindMaildir(account, "")
+	if err != nil {
+		return err
+	}
+
+	message := Message{
+		Maildir: maildir,
+		Data:    ioutil.NopCloser(bytes.NewReader(data)),
+	}
+
+	log.Printf("Creating email for %#v", account)
+	log.Print(string(data))
+
+	return c.CreateMessage(message)
+}
+
+// FIXME: we don't actually spool for now, we just store it in each user's
+// maildir. This might lead to oddness in the partial delivery case.
 func (c *concrete) SpoolMessage(recipients []Account, r io.Reader) error {
 	data, err := ioutil.ReadAll(r)
 	if err != nil {
 		return err
 	}
 
-	message, err := mail.ReadMessage(bytes.NewReader(data))
-	if err != nil {
-		return err
-	}
+	var g errgroup.Group
 
 	for _, recipient := range recipients {
-		message := Message{
-			Mailbox: recipient.DefaultMailbox,
-			Header:  message.Header,
-			EML:     data,
-		}
-
-		log.Printf("Creating email: %#v", message)
-		log.Print(string(data))
-
-		if err := c.CreateMessage(message); err != nil {
-			return err
-		}
+		recipient := recipient
+		g.Go(func() error { return c.deliver(recipient, data) })
 	}
 
-	return nil
+	return g.Wait()
 }