everywhere: add email notifications

api/email_new.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"time"
+)
+
+func emailNew(email string) error {
+	unsubscribeSecretHex, err := randomHex(32)
+	if err != nil {
+		return errorInternal
+	}
+
+	statement := `
+		INSERT INTO
+		emails (email, unsubscribeSecretHex, lastEmailNotificationDate)
+		VALUES ($1,    $2,                   $3                       )
+		ON CONFLICT DO NOTHING;
+	`
+	_, err = db.Exec(statement, email, unsubscribeSecretHex, time.Now().UTC())
+	if err != nil {
+		logger.Errorf("cannot insert email into emails: %v", err)
+		return errorInternal
+	}
+
+	return nil
+}