// Copyright 2023 Blink Labs Software
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package ouroboros_test

import (
	"fmt"
	"testing"
	"time"

	ouroboros "github.com/blinklabs-io/gouroboros"
	"github.com/blinklabs-io/ouroboros-mock"
	"go.uber.org/goleak"
)

// Ensure that we don't panic when closing the Connection object after a failed Dial() call
func TestDialFailClose(t *testing.T) {
	defer goleak.VerifyNone(t)
	oConn, err := ouroboros.New()
	if err != nil {
		t.Fatalf("unexpected error when creating Connection object: %s", err)
	}
	err = oConn.Dial("unix", "/path/does/not/exist")
	if err == nil {
		t.Fatalf("did not get expected failure on Dial()")
	}
	// Close connection
	oConn.Close()
}

func TestDoubleClose(t *testing.T) {
	defer goleak.VerifyNone(t)
	mockConn := ouroboros_mock.NewConnection(
		ouroboros_mock.ProtocolRoleClient,
		[]ouroboros_mock.ConversationEntry{
			ouroboros_mock.ConversationEntryHandshakeRequestGeneric,
			ouroboros_mock.ConversationEntryHandshakeNtCResponse,
		},
	)
	oConn, err := ouroboros.New(
		ouroboros.WithConnection(mockConn),
		ouroboros.WithNetworkMagic(ouroboros_mock.MockNetworkMagic),
	)
	if err != nil {
		t.Fatalf("unexpected error when creating Connection object: %s", err)
	}
	// Async error handler
	go func() {
		err, ok := <-oConn.ErrorChan()
		if !ok {
			return
		}
		// We can't call t.Fatalf() from a different Goroutine, so we panic instead
		panic(fmt.Sprintf("unexpected Ouroboros connection error: %s", err))
	}()
	// Close connection
	if err := oConn.Close(); err != nil {
		t.Fatalf("unexpected error when closing Connection object: %s", err)
	}
	// Close connection again
	if err := oConn.Close(); err != nil {
		t.Fatalf(
			"unexpected error when closing Connection object again: %s",
			err,
		)
	}
	// Wait for connection shutdown
	select {
	case <-oConn.ErrorChan():
	case <-time.After(10 * time.Second):
		t.Errorf("did not shutdown within timeout")
	}
}
