Add dep

vendor/maunium.net/go/mautrix-appservice/protocol.go

@@ -0,0 +1,59 @@
+package appservice
+
+import (
+	"encoding/json"
+	"net/http"
+	"maunium.net/go/gomatrix"
+)
+
+// EventList contains a list of events.
+type EventList struct {
+	Events []*gomatrix.Event `json:"events"`
+}
+
+// EventListener is a function that receives events.
+type EventListener func(event *gomatrix.Event)
+
+// WriteBlankOK writes a blank OK message as a reply to a HTTP request.
+func WriteBlankOK(w http.ResponseWriter) {
+	w.WriteHeader(http.StatusOK)
+	w.Write([]byte("{}"))
+}
+
+// Respond responds to a HTTP request with a JSON object.
+func Respond(w http.ResponseWriter, data interface{}) error {
+	dataStr, err := json.Marshal(data)
+	if err != nil {
+		return err
+	}
+	_, err = w.Write([]byte(dataStr))
+	return err
+}
+
+// Error represents a Matrix protocol error.
+type Error struct {
+	HTTPStatus int       `json:"-"`
+	ErrorCode  ErrorCode `json:"errcode"`
+	Message    string    `json:"message"`
+}
+
+func (err Error) Write(w http.ResponseWriter) {
+	w.WriteHeader(err.HTTPStatus)
+	Respond(w, &err)
+}
+
+// ErrorCode is the machine-readable code in an Error.
+type ErrorCode string
+
+// Native ErrorCodes
+const (
+	ErrForbidden ErrorCode = "M_FORBIDDEN"
+	ErrUnknown   ErrorCode = "M_UNKNOWN"
+)
+
+// Custom ErrorCodes
+const (
+	ErrNoTransactionID ErrorCode = "NET.MAUNIUM.NO_TRANSACTION_ID"
+	ErrNoBody          ErrorCode = "NET.MAUNIUM.NO_REQUEST_BODY"
+	ErrInvalidJSON     ErrorCode = "NET.MAUNIUM.INVALID_JSON"
+)