Add support for general markdown messages

Signed-off-by: Marcus Noble <github@marcusnoble.co.uk>

main.go

@@ -8,6 +8,8 @@ import (
 	"github.com/gofiber/fiber/v2"
 	"github.com/gofiber/fiber/v2/middleware/logger"
 	"maunium.net/go/mautrix"
+	"maunium.net/go/mautrix/event"
+	"maunium.net/go/mautrix/format"
 	"maunium.net/go/mautrix/id"
 )
 
@@ -123,6 +125,18 @@ func HandlePayloadPost(c *fiber.Ctx) error {
 			}
 			return fiber.ErrInternalServerError
 		}
+	case PayloadTypeMarkdown:
+		_, err := matrixClient.SendMessageEvent(
+			id.RoomID(payload.RoomID),
+			event.EventMessage,
+			format.RenderMarkdown(payload.Message, true, true),
+		)
+		if err != nil {
+			if httpErr, ok := err.(mautrix.HTTPError); ok {
+				return c.Status(httpErr.Response.StatusCode).SendString(httpErr.RespError.Err)
+			}
+			return fiber.ErrInternalServerError
+		}
 	case PayloadTypeNotice:
 		_, err := matrixClient.SendNotice(id.RoomID(payload.RoomID), payload.Message)
 		if err != nil {

payload.go

@@ -7,8 +7,9 @@ import (
 type PayloadType string
 
 const (
-	PayloadTypeText   PayloadType = "text"
-	PayloadTypeNotice PayloadType = "notice"
+	PayloadTypeText     PayloadType = "text"
+	PayloadTypeMarkdown PayloadType = "markdown"
+	PayloadTypeNotice   PayloadType = "notice"
 )
 
 type Payload struct {