Better caldav support (#73)

vendor/github.com/samedi/caldav-go/handlers/builder.go

@@ -0,0 +1,36 @@
+package handlers
+
+import (
+	"net/http"
+)
+
+// HandlerInterface represents a CalDAV request handler. It has only one function `Handle`,
+// which is used to handle the CalDAV request and returns the response.
+type HandlerInterface interface {
+	Handle() *Response
+}
+
+// NewHandler returns a new CalDAV request handler object based on the provided request.
+// With the returned request handler, you can call `Handle()` to handle the request.
+func NewHandler(request *http.Request) HandlerInterface {
+	response := NewResponse()
+
+	switch request.Method {
+	case "GET":
+		return getHandler{request, response, false}
+	case "HEAD":
+		return getHandler{request, response, true}
+	case "PUT":
+		return putHandler{request, response}
+	case "DELETE":
+		return deleteHandler{request, response}
+	case "PROPFIND":
+		return propfindHandler{request, response}
+	case "OPTIONS":
+		return optionsHandler{response}
+	case "REPORT":
+		return reportHandler{request, response}
+	default:
+		return notImplementedHandler{response}
+	}
+}