package protocol_test

import (
	"strings"
	"testing"

	protocol "github.com/sechmachine/VerseVDI-Protocol/gen/go/protocol"
)

func TestManifestRejectsForbiddenAndUnknownFields(t *testing.T) {
	valid := `{"version":"1","purpose":"launch","session_id":"session-1","reconnect_sequence":0,"gateway":{"id":"gateway-1","addresses":["gateway.control.test:443"],"public_identity":"gateway-1"},"tunnel":{"versions":["verse-gateway-v1/1"],"features":["control.v1"]},"profile":{"id":"standard","bounds":{"minimum_kbps":1,"target_kbps":2,"maximum_kbps":3}},"grant":{"opaque_value":"opaque-one-time-grant-value-with-at-least-43-bytes","expires_at":"2099-01-01T00:00:00Z","audience":"versevdi-gateway"},"correlation_id":"correlation-1"}`
	manifest, err := protocol.DecodeConnectionManifest([]byte(valid))
	if err != nil || manifest.Gateway.ID != "gateway-1" {
		t.Fatalf("valid manifest = %+v, err = %v", manifest, err)
	}
	for _, field := range []string{"provider_url", "vm_address", "password"} {
		payload := strings.Replace(valid, `"correlation_id":"correlation-1"`, `"correlation_id":"correlation-1","`+field+`":"forbidden"`, 1)
		if _, err := protocol.DecodeConnectionManifest([]byte(payload)); err == nil {
			t.Fatalf("DecodeConnectionManifest accepted forbidden field %q", field)
		}
	}
}

func TestPageInfoRejectsOutOfBoundsLimit(t *testing.T) {
	if _, err := protocol.DecodePageInfo([]byte(`{"limit":101,"next_cursor":""}`)); err == nil {
		t.Fatal("DecodePageInfo accepted limit above the contract maximum")
	}
}

func TestGeneratedDecodersRejectMissingRequiredFieldsAndTrailingValues(t *testing.T) {
	if _, err := protocol.DecodeErrorEnvelope([]byte(`{"status":false,"error":"safe","code":"invalid_request","message":"safe","resolution":"retry","violations":[]} {}`)); err == nil {
		t.Fatal("DecodeErrorEnvelope accepted a trailing JSON value")
	}
	if _, err := protocol.DecodeErrorEnvelope([]byte(`{"error":"safe","code":"invalid_request","message":"safe","resolution":"retry","request_id":"req-1","violations":[]}`)); err == nil {
		t.Fatal("DecodeErrorEnvelope accepted a missing required boolean")
	}
}