fix sent emails not being added to user's mailbox

bang.go

@@ -6,8 +6,8 @@ import (
 	"encoding/base64"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"io"
+	"io/ioutil"
 	"log"
 	"net/http"
 	"os"
@@ -93,6 +93,23 @@ func saveEmail(email Email) error {
 	return json.NewEncoder(f).Encode(email)
 }
 
+// Save a copy to the sender's mailbox (not in a subfolder)
+func saveSentCopy(email Email) error {
+	mu.Lock()
+	defer mu.Unlock()
+	senderDir := filepath.Join(mailboxDir, email.From)
+	if err := os.MkdirAll(senderDir, 0755); err != nil {
+		return err
+	}
+	filePath := filepath.Join(senderDir, email.ID+".json")
+	f, err := os.Create(filePath)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+	return json.NewEncoder(f).Encode(email)
+}
+
 func createUserHandler(w http.ResponseWriter, r *http.Request) {
 	if r.Method != http.MethodPost {
 		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
@@ -159,13 +176,17 @@ func receiveEmailHandler(w http.ResponseWriter, r *http.Request) {
 		http.Error(w, "Invalid JSON", http.StatusBadRequest)
 		return
 	}
+	email.ID = fmt.Sprintf("%d", time.Now().UnixNano())
+	email.Timestamp = time.Now()
 	if email.Domain == "brandon.ad" {
-		email.ID = fmt.Sprintf("%d", time.Now().UnixNano())
-		email.Timestamp = time.Now()
 		if err := saveEmail(email); err != nil {
 			http.Error(w, "Failed to save email", http.StatusInternalServerError)
 			return
 		}
+		// Save a copy to the sender's mailbox (not in a subfolder)
+		if err := saveSentCopy(email); err != nil {
+			log.Printf("Warning: failed to save sent copy: %v", err)
+		}
 		w.WriteHeader(http.StatusCreated)
 		json.NewEncoder(w).Encode(map[string]string{"status": "ok", "id": email.ID})
 		return
@@ -183,6 +204,10 @@ func receiveEmailHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	defer resp.Body.Close()
+	// Save a copy to the sender's mailbox (not in a subfolder)
+	if err := saveSentCopy(email); err != nil {
+		log.Printf("Warning: failed to save sent copy: %v", err)
+	}
 	w.WriteHeader(resp.StatusCode)
 	io.Copy(w, resp.Body)
 }