🐛 Make error and error_description query optional in callback request

Makefile

@@ -13,8 +13,8 @@ EXECUTABLE ?= indieauth
 
 .PHONY: all clean check help
 
-all:
-	$(GO) build -v $(GOFLAGS) -o $(EXECUTABLE) $<
+all: main.go
+	$(GO) build -v $(GOFLAGS) -o $(EXECUTABLE)
 
 clean: ## Delete all files in the current directory that are normally created by building the program
 	-rm $(srcdir)/internal/testing/httptest/{cert,key}.pem

internal/client/delivery/http/client_http.go

@@ -19,25 +19,25 @@ import (
 
 type (
 	ClientCallbackRequest struct {
+		Error            domain.ErrorCode `form:"error,omitempty"`
 		Iss              *domain.ClientID `form:"iss"`
 		Code             string           `form:"code"`
-		Error            domain.ErrorCode `form:"error"`
-		ErrorDescription string           `form:"error_description"`
+		ErrorDescription string           `form:"error_description,omitempty"`
 		State            string           `form:"state"`
 	}
 
 	NewRequestHandlerOptions struct {
-		Client  *domain.Client
-		Config  *domain.Config
 		Matcher language.Matcher
 		Tokens  token.UseCase
+		Client  *domain.Client
+		Config  *domain.Config
 	}
 
 	RequestHandler struct {
-		client  *domain.Client
-		config  *domain.Config
 		matcher language.Matcher
 		tokens  token.UseCase
+		client  *domain.Client
+		config  *domain.Config
 	}
 )