package main

import (
	"context"

	"github.com/pingcap/test-infra/caselib/pkg/steps"
	"github.com/pingcap/test-infra/caselib/pkg/utils"
	"github.com/pingcap/test-infra/common/model/resource"
	_ "github.com/pingcap/test-infra/sdk/resource/impl/k8s"
	"go.uber.org/zap"
)

func IncrementalImport() steps.Step {
	var (
		tidbRes            = &resource.ResourceHandle{}
		lightningRes       = &resource.ResourceHandle{}
		opts               = &steps.LightningImportOpts{}
		opts2              = &steps.LightningImportOpts{}
		globalVariableOpts = &steps.TiDBVariableList
		databaseExistOpts  = &steps.DatabasesExists{}
		dropDatabases      string
		adminCheck         string
		expectError        bool
	)
	return steps.
		NewBuilder().
		LoadEnv().
		LoadParamFromEnv(utils.ParamPrefix+"drop_databases", &dropDatabases).
		LoadResourceFromEnv(utils.ParamPrefix+"import_basic_opts", opts).
		LoadResourceFromEnv(utils.ParamPrefix+"import_basic_opts2", opts2).
		LoadResourceFromEnv(utils.ResourcePrefix+"target", tidbRes).
		LoadResourceFromEnv(utils.ResourcePrefix+"lightning", lightningRes).
		LoadParamFromEnv(utils.ParamPrefix+"admin_check", &adminCheck).
		LoadResourceFromEnv(utils.ParamPrefix+"expect_error", &expectError).
		ConfigGlobalVariable(globalVariableOpts, tidbRes).
		LoadResourceFromEnv(utils.ParamPrefix+"global_variable", &globalVariableOpts).
		LoadResourceFromEnv(utils.ParamPrefix+"databases_exists", &databaseExistOpts).
		ConfigGlobalVariable(globalVariableOpts, tidbRes).
		DropUserDatabases(tidbRes).
		// first import
		LightningImport(opts, lightningRes, tidbRes).
		// incremental import, should fail if tikv-importer.incremental-import is not true, and target table not empty
		// scenario that incremental import conflicts with existing data is not supported
		// scenario that incremental import data internal conflict is supported ( duplicate resolution)
		ExpectError(&expectError, steps.NewLightningImport(opts2, lightningRes, tidbRes)).
		CheckDatabasesCrc32(&opts2.Crc32Checksum, &dropDatabases, tidbRes).
		AdminCheck(tidbRes, &adminCheck).
		// check lightning_metadata only exists if incremental-import == true and import failed
		CheckDatabasesExist(&databaseExistOpts.Exist, &databaseExistOpts.Databases, tidbRes).
		DropUserDatabases(tidbRes).
		Build()
}

func main() {
	_, logger := utils.GetCtxAndLogger()
	ctx := steps.New(context.Background())
	if err := IncrementalImport().Execute(ctx); err != nil {
		logger.Fatal("IncrementalImport failed", zap.Error(err))
	}
	logger.Info("IncrementalImport finished")
}