// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0

package xprocessor

import (
	"context"
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"

	"go.opentelemetry.io/collector/component"
	"go.opentelemetry.io/collector/consumer/consumertest"
	"go.opentelemetry.io/collector/consumer/xconsumer"
	"go.opentelemetry.io/collector/internal/componentalias"
	"go.opentelemetry.io/collector/processor"
	"go.opentelemetry.io/collector/processor/internal"
)

var testID = component.MustNewID("test")

func TestNewFactoryWithProfiles(t *testing.T) {
	testType := component.MustNewType("test")
	defaultCfg := struct{}{}
	factory := NewFactory(
		testType,
		func() component.Config { return &defaultCfg },
		WithProfiles(createProfiles, component.StabilityLevelAlpha),
	)
	assert.Equal(t, testType, factory.Type())
	assert.EqualValues(t, &defaultCfg, factory.CreateDefaultConfig())

	assert.Equal(t, component.StabilityLevelAlpha, factory.ProfilesStability())
	_, err := factory.CreateProfiles(context.Background(), processor.Settings{ID: testID}, &defaultCfg, consumertest.NewNop())
	require.NoError(t, err)

	wrongID := component.MustNewID("wrong")
	wrongIDErrStr := internal.ErrIDMismatch(wrongID, testType).Error()
	_, err = factory.CreateProfiles(context.Background(), processor.Settings{ID: wrongID}, &defaultCfg, consumertest.NewNop())
	assert.EqualError(t, err, wrongIDErrStr)
}

var nopInstance = &nopProcessor{
	Consumer: consumertest.NewNop(),
}

// nopProcessor stores consumed traces and metrics for testing purposes.
type nopProcessor struct {
	component.StartFunc
	component.ShutdownFunc
	consumertest.Consumer
}

func createProfiles(context.Context, processor.Settings, component.Config, xconsumer.Profiles) (Profiles, error) {
	return nopInstance, nil
}

func TestNewFactoryWithDeprecatedAlias(t *testing.T) {
	testType := component.MustNewType("newname")
	aliasType := component.MustNewType("oldname")
	defaultCfg := struct{}{}

	f := NewFactory(
		testType,
		func() component.Config { return &defaultCfg },
		WithProfiles(createProfiles, component.StabilityLevelAlpha),
		WithDeprecatedTypeAlias(aliasType),
	)

	assert.Equal(t, testType, f.Type())
	assert.Equal(t, aliasType, f.(*factory).Factory.(componentalias.TypeAliasHolder).DeprecatedAlias())
	assert.EqualValues(t, &defaultCfg, f.CreateDefaultConfig())

	_, err := f.CreateProfiles(context.Background(), processor.Settings{ID: component.MustNewID("newname")}, &defaultCfg, consumertest.NewNop())
	require.NoError(t, err)
	_, err = f.CreateProfiles(context.Background(), processor.Settings{ID: component.MustNewID("oldname")}, &defaultCfg, consumertest.NewNop())
	require.NoError(t, err)
	_, err = f.CreateProfiles(context.Background(), processor.Settings{ID: component.MustNewID("wrongname")}, &defaultCfg, consumertest.NewNop())
	require.Error(t, err)
}