package miningmanager_test

import (
	//"bytes"
	//"github.com/kaspanet/kaspad/app/appmessage"
	"github.com/kaspanet/kaspad/domain"
	"github.com/kaspanet/kaspad/domain/consensus"
	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
	"github.com/kaspanet/kaspad/domain/consensus/utils/consensushashing"

	//"github.com/kaspanet/kaspad/domain/consensus/ruleerrors"
	//"github.com/kaspanet/kaspad/domain/consensus/utils/coinbase"
	//"github.com/kaspanet/kaspad/domain/consensus/utils/consensushashing"
	//"github.com/kaspanet/kaspad/domain/consensus/utils/consensusserialization"
	"github.com/kaspanet/kaspad/domain/consensus/utils/constants"
	//"github.com/kaspanet/kaspad/domain/consensus/utils/hashes"
	"github.com/kaspanet/kaspad/domain/consensus/utils/subnetworks"
	"github.com/kaspanet/kaspad/domain/consensus/utils/testutils"
	"github.com/kaspanet/kaspad/domain/consensus/utils/txscript"
	"github.com/kaspanet/kaspad/domain/dagconfig"
	//"github.com/kaspanet/kaspad/domain/miningmanager"
	//infrastructuredatabase "github.com/kaspanet/kaspad/infrastructure/db/database"
	//"github.com/kaspanet/kaspad/infrastructure/db/database/ldb"
	"github.com/kaspanet/kaspad/util"
	//"github.com/pkg/errors"
	//"github.com/syndtr/goleveldb/leveldb/opt"
	//"io/ioutil"
	//"os"
	//"path/filepath"
	"testing"
)

//func setupDBForTest(dbName string) (infrastructuredatabase.Database, func(), error) {
//	var err error
//	tmpDir, err := ioutil.TempDir("", "setupDBManager")
//	if err != nil {
//		return nil, nil, errors.Errorf("error creating temp dir: %s", err)
//	}
//
//	dbPath := filepath.Join(tmpDir, dbName)
//	_ = os.RemoveAll(dbPath)
//	db, err := ldb.NewLevelDB(dbPath)
//	if err != nil {
//		return nil, nil, err
//	}
//
//	originalLDBOptions := ldb.Options
//	ldb.Options = func() *opt.Options {
//		return nil
//	}
//
//	teardown := func() {
//		db.Close()
//		ldb.Options = originalLDBOptions
//		os.RemoveAll(dbPath)
//	}
//
//	return db, teardown, err
//}

func createCoinbaseTransaction(t *testing.T, scriptPublicKey []byte, value uint64) *externalapi.DomainTransaction {
	dummyTxOut := externalapi.DomainTransactionOutput{
		Value:           value,
		ScriptPublicKey: nil,
	}

	transaction := &externalapi.DomainTransaction{
		Version:      constants.MaxTransactionVersion,
		Inputs:       []*externalapi.DomainTransactionInput{},
		Outputs:      []*externalapi.DomainTransactionOutput{&dummyTxOut},
		LockTime:     0,
		SubnetworkID: subnetworks.SubnetworkIDCoinbase,
	}

	return transaction
}

//
//func createTransaction(inputs []*externalapi.DomainTransactionInput, scriptPublicKey []byte, value uint64) *externalapi.DomainTransaction {
//	dummyTxOut := externalapi.DomainTransactionOutput{
//		Value:           value,
//		ScriptPublicKey: scriptPublicKey,
//	}
//
//	transaction := &externalapi.DomainTransaction{
//		Version:      constants.MaxTransactionVersion,
//		Inputs:       inputs,
//		Outputs:      []*externalapi.DomainTransactionOutput{&dummyTxOut},
//		LockTime:     0,
//		SubnetworkID: subnetworks.SubnetworkIDNative,
//		Gas:          0,
//	}
//
//	return transaction
//}
func TestMiningManager(t *testing.T) {
	testutils.ForAllNets(t, true, func(t *testing.T, params *dagconfig.Params) {

		factory := consensus.NewFactory()
		tc, teardown, err := factory.NewTestConsensus(params, false, "TestBlockSize")
		if err != nil {
			t.Fatalf("Error setting up tc: %+v", err)
		}
		defer teardown(false)
		tc.Database()

		miningAddrHash := [20]byte{0x99}
		miningAddr, err := util.NewAddressPubKeyHash(miningAddrHash[:], util.Bech32PrefixKaspaTest)
		if err != nil {
			t.Fatalf("NewAddressPubKeyHash: unexpected error: %v", err)
		}
		scriptPublicKey, err := txscript.PayToAddrScript(miningAddr)
		isArchivalNode := false
		domain, err := domain.New(params, tc.Database(), isArchivalNode)
		if err != nil {
			t.Fatalf("err")
		}
		//consensusInstance, err := consensusFactory.NewConsensus(dagParams, db)
		//if err != nil {
		//	t.Fatalf("NewConsensus: %v", err)
		//}

		// Insert 10 transactions
		miningManager := domain.MiningManager()
		//miningManager := miningManagerFactory.NewMiningManager(consensusInstance, constants.MaxMassAcceptedByBlock)
		transactions := make([]*externalapi.DomainTransaction, 10)
		for i := range transactions {
			transaction := createCoinbaseTransaction(t, scriptPublicKey.Script, uint64(100000000+i))
			transactions[i] = transaction
			err = miningManager.ValidateAndInsertTransaction(transaction, true)
			if err != nil {
				t.Fatalf("ValidateAndInsertTransaction: unexpected error: %v", err)
			}
		}

		// Spending 10 transactions
		miningManager.HandleNewBlockTransactions(transactions)
		block, err := miningManager.GetBlockTemplate(&externalapi.DomainCoinbaseData{
			ScriptPublicKey: scriptPublicKey,
		})
		if err != nil {
			// todo
		}
		if block == nil {
			t.Fatalf("GetBlockTemplate: failed building block")
		}

		// Check 10 transactions are not exist
		for _, tx2 := range transactions {
			for _, tx1 := range block.Transactions {
				if consensushashing.TransactionID(tx1) == consensushashing.TransactionID(tx2) {
					t.Fatalf("Spent tranasaction is still exisit")
				}
			}
		}

	})
}

//
//func TestMiningManager(t *testing.T) {
//	dagParams := &dagconfig.SimnetParams
//	consensusFactory := consensus.NewFactory()
//	miningManagerFactory := miningmanager.NewFactory()
//	db, teardownFunc, err := setupDBForTest(t.Name())
//	if err != nil {
//		t.Fatalf("Failed to setup db: %v", err)
//	}
//	defer teardownFunc()
//
//	miningAddrHash := [20]byte{0x99}
//	miningAddr, err := util.NewAddressPubKeyHash(miningAddrHash[:], util.Bech32PrefixKaspaTest)
//	if err != nil {
//		t.Fatalf("NewAddressPubKeyHash: unexpected error: %v", err)
//	}
//	scriptPublicKey, err := txscript.PayToAddrScript(miningAddr)
//
//	t.Run("Spending all transactions", func(t *testing.T) {
//		consensusInstance, err := consensusFactory.NewConsensus(dagParams, db)
//		if err != nil {
//			t.Fatalf("NewConsensus: %v", err)
//		}
//
//		// Insert 10 transactions
//		miningManager := miningManagerFactory.NewMiningManager(consensusInstance, constants.MaxMassAcceptedByBlock)
//		transactions := make([]*externalapi.DomainTransaction, 10)
//		for i := range transactions {
//			transaction := createCoinbaseTransaction(t, scriptPublicKey, uint64(100000000+i))
//			transactions[i] = transaction
//			err = miningManager.ValidateAndInsertTransaction(transaction, true)
//			if err != nil {
//				t.Fatalf("ValidateAndInsertTransaction: unexpected error: %v", err)
//			}
//		}
//
//		// Spending 10 transactions
//		miningManager.HandleNewBlockTransactions(transactions)
//		block := miningManager.GetBlockTemplate(&externalapi.DomainCoinbaseData{
//			ScriptPublicKey: scriptPublicKey,
//		})
//		if block == nil {
//			t.Fatalf("GetBlockTemplate: failed building block")
//		}
//
//		// Check 10 transactions are not exist
//		for _, tx2 := range transactions {
//			for _, tx1 := range block.Transactions {
//				if consensusserialization.TransactionID(tx1) == consensusserialization.TransactionID(tx2) {
//					t.Fatalf("Spent tranasaction is still exisit")
//				}
//			}
//		}
//	})
//
//	t.Run("Spending some transactions", func(t *testing.T) {
//		consensusInstance, err := consensusFactory.NewConsensus(dagParams, db)
//		if err != nil {
//			t.Fatalf("NewConsensus: %v", err)
//		}
//
//		// Insert 10 transactions
//		miningManager := miningManagerFactory.NewMiningManager(consensusInstance, constants.MaxMassAcceptedByBlock)
//		transactions := make([]*externalapi.DomainTransaction, 10)
//		for i := range transactions {
//			transaction := createCoinbaseTransaction(t, scriptPublicKey, uint64(100000000+i))
//			transactions[i] = transaction
//			err = miningManager.ValidateAndInsertTransaction(transaction, true)
//			if err != nil {
//				t.Fatalf("ValidateAndInsertTransaction: unexpected error: %v", err)
//			}
//		}
//
//		// Spending first 5 transactions
//		miningManager.HandleNewBlockTransactions(transactions[0:5])
//		block := miningManager.GetBlockTemplate(&externalapi.DomainCoinbaseData{
//			ScriptPublicKey: scriptPublicKey,
//		})
//		if block == nil {
//			t.Fatalf("GetBlockTemplate: failed building block")
//		}
//
//		// Check first 5 transactions are not exist
//		for _, tx2 := range transactions[0:5] {
//			for _, tx1 := range block.Transactions {
//				if consensusserialization.TransactionID(tx1) == consensusserialization.TransactionID(tx2) {
//					t.Fatalf("Spent tranasaction is still exisit")
//				}
//			}
//		}
//	})
//
//	t.Run("Spending transactions with unknown parents", func(t *testing.T) {
//		consensusInstance, err := consensusFactory.NewConsensus(dagParams, db)
//		if err != nil {
//			t.Fatalf("NewConsensus: %v", err)
//		}
//
//		miningManager := miningManagerFactory.NewMiningManager(consensusInstance, constants.MaxMassAcceptedByBlock)
//		transactions := make([]*externalapi.DomainTransaction, 10)
//		parentTransactions := make([]*externalapi.DomainTransaction, len(transactions))
//		for i := range parentTransactions {
//			parentTransaction := createCoinbaseTransaction(t, scriptPublicKey, uint64(100000000+i))
//			parentTransactions[i] = parentTransaction
//		}
//
//		// Insert transactions with unknown parents
//		for i := range transactions {
//			parentTransaction := parentTransactions[i]
//			txIn := externalapi.DomainTransactionInput{
//				PreviousOutpoint: externalapi.DomainOutpoint{TransactionID: *consensusserialization.TransactionID(parentTransaction), Index: 1},
//				SignatureScript:  bytes.Repeat([]byte{0x00}, 65),
//				Sequence:         appmessage.MaxTxInSequenceNum,
//			}
//			transaction := createTransaction([]*externalapi.DomainTransactionInput{&txIn}, scriptPublicKey, uint64(10+i))
//			transactions[i] = transaction
//			err = miningManager.ValidateAndInsertTransaction(transaction, true)
//			if err != nil {
//				t.Fatalf("ValidateAndInsertTransaction: unexpected error: %v", err)
//			}
//		}
//
//		// Check transactions with unknown parents
//		block := miningManager.GetBlockTemplate(&externalapi.DomainCoinbaseData{
//			ScriptPublicKey: scriptPublicKey,
//		})
//		if block == nil {
//			t.Fatalf("GetBlockTemplate: failed building block")
//		}
//
//		for _, tx1 := range transactions {
//			for _, tx2 := range block.Transactions {
//				if consensusserialization.TransactionID(tx1) == consensusserialization.TransactionID(tx2) {
//					t.Fatalf("Tranasaction with unknown parents is exisit")
//				}
//			}
//		}
//
//		// Add the missing parents
//		for _, parentTransaction := range parentTransactions {
//			err = miningManager.ValidateAndInsertTransaction(parentTransaction, true)
//			if err != nil {
//				t.Fatalf("ValidateAndInsertTransaction: unexpected error: %v", err)
//			}
//		}
//		block = miningManager.GetBlockTemplate(&externalapi.DomainCoinbaseData{
//			ScriptPublicKey: scriptPublicKey,
//		})
//		if block == nil {
//			t.Fatalf("GetBlockTemplate: failed building block")
//		}
//
//		numberOfFoundTransactions := 0
//		for _, tx1 := range transactions {
//			for _, tx2 := range block.Transactions {
//				if consensusserialization.TransactionID(tx1) == consensusserialization.TransactionID(tx2) {
//					numberOfFoundTransactions++
//					break
//				}
//			}
//		}
//
//		if len(transactions) != numberOfFoundTransactions{
//			t.Fatalf("Not all transactions are exist, expected %v, but got %v", len(transactions), numberOfFoundTransactions)
//		}
//	})
//}