package trc21issuer

import (
	"context"
	"math/big"
	"testing"

	"github.com/XinFinOrg/XDPoSChain/accounts/abi/bind"
	"github.com/XinFinOrg/XDPoSChain/accounts/abi/bind/backends"
	"github.com/XinFinOrg/XDPoSChain/common"
	"github.com/XinFinOrg/XDPoSChain/core/types"
	"github.com/XinFinOrg/XDPoSChain/crypto"
	"github.com/XinFinOrg/XDPoSChain/params"
)

var (
	mainKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
	mainAddr   = crypto.PubkeyToAddress(mainKey.PublicKey)

	airdropKey, _ = crypto.HexToECDSA("49a7b37aa6f6645917e7b807e9d1c00d4fa71f18343b0d4122a4d2df64dd6fee")
	airdropAddr   = crypto.PubkeyToAddress(airdropKey.PublicKey)

	subKey, _ = crypto.HexToECDSA("5bb98c5f937d176aa399ea6e6541f4db8f8db5a4ee1a8b56fb8beb41f2d755e3")
	subAddr   = crypto.PubkeyToAddress(subKey.PublicKey) //0x21292d56E2a8De3cC4672dB039AAA27f9190B1f6

	minApply = big.NewInt(0).Mul(big.NewInt(1000), big.NewInt(100000000000000000)) // 100 XDC
)

func TestFeeTxWithTRC21Token(t *testing.T) {
	oldTRC21GasPriceBefore := new(big.Int).Set(common.TRC21GasPriceBefore)
	defer func() {
		common.TRC21GasPriceBefore = oldTRC21GasPriceBefore
	}()
	common.TRC21GasPriceBefore = big.NewInt(1)

	// init genesis
	contractBackend := backends.NewXDCSimulatedBackend(
		types.GenesisAlloc{
			mainAddr: {Balance: big.NewInt(0).Mul(big.NewInt(10000000000000), big.NewInt(10000000000000))},
		},
		42000000,
		params.TestXDPoSMockChainConfig,
	)
	transactOpts := bind.NewKeyedTransactor(mainKey)

	// deploy payer swap SMC
	trc21IssuerAddr, trc21Issuer, err := DeployTRC21Issuer(transactOpts, contractBackend, minApply)
	if err != nil {
		t.Fatal("can't deploy TRC21Issuer contract, err:", err)
	}
	contractBackend.Commit()

	// set contract address to config
	oldTRC21IssuerSMC := common.TRC21IssuerSMC
	defer func() {
		common.TRC21IssuerSMC = oldTRC21IssuerSMC
	}()
	common.TRC21IssuerSMC = trc21IssuerAddr

	cap := big.NewInt(0).Mul(big.NewInt(10000000), big.NewInt(10000000000000))
	TRC21fee := big.NewInt(100)

	// deploy a TRC21 SMC
	trc21TokenAddr, trc21, err := DeployTRC21(transactOpts, contractBackend, "TEST", "XDC", 18, cap, TRC21fee)
	if err != nil {
		t.Fatal("can't deploy TRC21 contract, err:", err)
	}
	contractBackend.Commit()

	// add trc21 address to list token trc21Issuer
	trc21Issuer.TransactOpts.Value = minApply
	_, err = trc21Issuer.Apply(trc21TokenAddr)
	if err != nil {
		t.Fatal("can't add a token in  smart contract pay swap: ", err)
	}
	contractBackend.Commit()

	// check trc21 SMC balance
	balance, err := contractBackend.BalanceAt(context.TODO(), trc21IssuerAddr, nil)
	if err != nil || balance.Cmp(minApply) != 0 {
		t.Fatal("can't get balance  in trc21Issuer SMC: ", err, "got", balance, "wanted", minApply)
	}

	// check balance fee
	balanceIssuerFee, err := trc21Issuer.GetTokenCapacity(trc21TokenAddr)
	if err != nil || balanceIssuerFee.Cmp(minApply) != 0 {
		t.Fatal("can't get balance token fee in  smart contract: ", err, "got", balanceIssuerFee, "wanted", minApply)
	}
	trc21Issuer.TransactOpts.Value = big.NewInt(0)
	airDropAmount := big.NewInt(1000000000)

	// airdrop token trc21 to a address no XDC
	tx, err := trc21.Transfer(airdropAddr, airDropAmount)
	if err != nil {
		t.Fatal("can't execute transfer in tr20: ", err)
	}
	contractBackend.Commit()
	receipt, err := contractBackend.TransactionReceipt(context.TODO(), tx.Hash())
	if err != nil {
		t.Fatal("can't transaction's receipt ", err, "hash", tx.Hash())
	}
	fee := common.GetGasFee(receipt.Logs[0].BlockNumber, receipt.GasUsed)
	remainFee := big.NewInt(0).Sub(minApply, fee)

	// check balance trc21 again
	balance, err = trc21.BalanceOf(airdropAddr)
	if err != nil || balance.Cmp(airDropAmount) != 0 {
		t.Fatal("check balance after fail transfer in tr20: ", err, "get", balance, "transfer", airDropAmount)
	}

	// check balance fee
	balanceIssuerFee, err = trc21Issuer.GetTokenCapacity(trc21TokenAddr)
	if err != nil {
		t.Fatal("can't get balance token fee in smart contract: ", err)
	}
	if balanceIssuerFee.Cmp(remainFee) != 0 {
		t.Fatal("check balance token fee in smart contract: got", balanceIssuerFee, "wanted", remainFee)
	}
	// check trc21 SMC balance
	balance, err = contractBackend.BalanceAt(context.TODO(), trc21IssuerAddr, nil)
	if err != nil || balance.Cmp(remainFee) != 0 {
		t.Fatal("can't get balance token fee in  smart contract: ", err, "got", balanceIssuerFee, "wanted", remainFee)
	}

	// access to address which received token trc21 but dont have XDC
	key1TransactOpts := bind.NewKeyedTransactor(airdropKey)
	key1Trc20, _ := NewTRC21(key1TransactOpts, trc21TokenAddr, contractBackend)

	transferAmount := big.NewInt(100000)
	// execute transfer trc to other address
	tx, err = key1Trc20.Transfer(subAddr, transferAmount)
	if err != nil {
		t.Fatal("can't execute transfer in tr20:", err)
	}
	contractBackend.Commit()

	balance, err = trc21.BalanceOf(subAddr)
	if err != nil || balance.Cmp(transferAmount) != 0 {
		t.Fatal("check balance after fail transfer in tr20: ", err, "get", balance, "transfer", transferAmount)
	}

	remainAirDrop := big.NewInt(0).Sub(airDropAmount, transferAmount)
	remainAirDrop = remainAirDrop.Sub(remainAirDrop, TRC21fee)
	// check balance trc21 again
	balance, err = trc21.BalanceOf(airdropAddr)
	if err != nil || balance.Cmp(remainAirDrop) != 0 {
		t.Fatal("check balance after fail transfer in tr20: ", err, "get", balance, "wanted", remainAirDrop)
	}

	receipt, err = contractBackend.TransactionReceipt(context.TODO(), tx.Hash())
	if err != nil {
		t.Fatal("can't transaction's receipt ", err, "hash", tx.Hash())
	}
	fee = common.GetGasFee(receipt.Logs[0].BlockNumber, receipt.GasUsed)
	remainFee = big.NewInt(0).Sub(remainFee, fee)
	// check balance fee
	balanceIssuerFee, err = trc21Issuer.GetTokenCapacity(trc21TokenAddr)
	if err != nil || balanceIssuerFee.Cmp(remainFee) != 0 {
		t.Fatal("can't get balance token fee in  smart contract: ", err, "got", balanceIssuerFee, "wanted", remainFee)
	}
	// check trc21 SMC balance
	balance, err = contractBackend.BalanceAt(context.TODO(), trc21IssuerAddr, nil)
	if err != nil || balance.Cmp(remainFee) != 0 {
		t.Fatal("can't get balance token fee in  smart contract: ", err, "got", balanceIssuerFee, "wanted", remainFee)
	}
}