// +build unittest

package btc

import (
	"blockbook/bchain"
	"encoding/hex"
	"math/big"
	"os"
	"reflect"
	"testing"

	"github.com/jakm/btcutil/chaincfg"
)

func TestMain(m *testing.M) {
	c := m.Run()
	chaincfg.ResetParams()
	os.Exit(c)
}

func Test_GetAddrDescFromAddress(t *testing.T) {
	type args struct {
		address string
	}
	tests := []struct {
		name    string
		args    args
		want    string
		wantErr bool
	}{
		{
			name:    "P2PKH",
			args:    args{address: "1JKgN43B9SyLuZH19H5ECvr4KcfrbVHzZ6"},
			want:    "76a914be027bf3eac907bd4ac8cb9c5293b6f37662722088ac",
			wantErr: false,
		},
		{
			name:    "P2PKH from P2PK",
			args:    args{address: "1HY6bKYhFH7HF3F48ikvziPHLrEWPGwXcE"},
			want:    "76a914b563933904dceba5c234e978bea0e9eb8b7e721b88ac",
			wantErr: false,
		},
		{
			name:    "P2SH",
			args:    args{address: "321x69Cb9HZLWwAWGiUBT1U81r1zPLnEjL"},
			want:    "a9140394b3cf9a44782c10105b93962daa8dba304d7f87",
			wantErr: false,
		},
		{
			name:    "P2WPKH",
			args:    args{address: "bc1qrsf2l34jvqnq0lduyz0j5pfu2nkd93nnq0qggn"},
			want:    "00141c12afc6b2602607fdbc209f2a053c54ecd2c673",
			wantErr: false,
		},
		{
			name:    "P2WSH",
			args:    args{address: "bc1qqwtn5s8vjnqdzrm0du885c46ypzt05vakmljhasx28shlv5a355sw5exgr"},
			want:    "002003973a40ec94c0d10f6f6f0e7a62ba2044b7d19db6ff2bf60651e17fb29d8d29",
			wantErr: false,
		},
	}
	parser := NewBitcoinParser(GetChainParams("main"), &Configuration{})

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got, err := parser.GetAddrDescFromAddress(tt.args.address)
			if (err != nil) != tt.wantErr {
				t.Errorf("GetAddrDescFromAddress() error = %v, wantErr %v", err, tt.wantErr)
				return
			}
			h := hex.EncodeToString(got)
			if !reflect.DeepEqual(h, tt.want) {
				t.Errorf("GetAddrDescFromAddress() = %v, want %v", h, tt.want)
			}
		})
	}
}

func Test_GetAddrDescFromVout(t *testing.T) {
	type args struct {
		vout bchain.Vout
	}
	tests := []struct {
		name    string
		args    args
		want    string
		wantErr bool
	}{
		{
			name:    "P2PKH",
			args:    args{vout: bchain.Vout{ScriptPubKey: bchain.ScriptPubKey{Hex: "76a914be027bf3eac907bd4ac8cb9c5293b6f37662722088ac"}}},
			want:    "76a914be027bf3eac907bd4ac8cb9c5293b6f37662722088ac",
			wantErr: false,
		},
		{
			name:    "P2PK compressed 1P3rU1Nk1pmc2BiWC8dEy9bZa1ZbMp5jfg",
			args:    args{vout: bchain.Vout{ScriptPubKey: bchain.ScriptPubKey{Hex: "21020e46e79a2a8d12b9b5d12c7a91adb4e454edfae43c0a0cb805427d2ac7613fd9ac"}}},
			want:    "76a914f1dce4182fce875748c4986b240ff7d7bc3fffb088ac",
			wantErr: false,
		},
		{
			name:    "P2PK uncompressed 1HY6bKYhFH7HF3F48ikvziPHLrEWPGwXcE",
			args:    args{vout: bchain.Vout{ScriptPubKey: bchain.ScriptPubKey{Hex: "41041057356b91bfd3efeff5fc0fa8b865faafafb67bd653c5da2cd16ce15c7b86db0e622c8e1e135f68918a23601eb49208c1ac72c7b64a4ee99c396cf788da16ccac"}}},
			want:    "76a914b563933904dceba5c234e978bea0e9eb8b7e721b88ac",
			wantErr: false,
		},
		{
			name:    "P2SH",
			args:    args{vout: bchain.Vout{ScriptPubKey: bchain.ScriptPubKey{Hex: "a9140394b3cf9a44782c10105b93962daa8dba304d7f87"}}},
			want:    "a9140394b3cf9a44782c10105b93962daa8dba304d7f87",
			wantErr: false,
		},
		{
			name:    "P2WPKH",
			args:    args{vout: bchain.Vout{ScriptPubKey: bchain.ScriptPubKey{Hex: "00141c12afc6b2602607fdbc209f2a053c54ecd2c673"}}},
			want:    "00141c12afc6b2602607fdbc209f2a053c54ecd2c673",
			wantErr: false,
		},
		{
			name:    "P2WSH",
			args:    args{vout: bchain.Vout{ScriptPubKey: bchain.ScriptPubKey{Hex: "002003973a40ec94c0d10f6f6f0e7a62ba2044b7d19db6ff2bf60651e17fb29d8d29"}}},
			want:    "002003973a40ec94c0d10f6f6f0e7a62ba2044b7d19db6ff2bf60651e17fb29d8d29",
			wantErr: false,
		},
	}
	parser := NewBitcoinParser(GetChainParams("main"), &Configuration{})

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got, err := parser.GetAddrDescFromVout(&tt.args.vout)
			if (err != nil) != tt.wantErr {
				t.Errorf("GetAddrDescFromVout() error = %v, wantErr %v", err, tt.wantErr)
				return
			}
			h := hex.EncodeToString(got)
			if !reflect.DeepEqual(h, tt.want) {
				t.Errorf("GetAddrDescFromVout() = %v, want %v", h, tt.want)
			}
		})
	}
}

func Test_GetAddressesFromAddrDesc(t *testing.T) {
	type args struct {
		script string
	}
	tests := []struct {
		name    string
		args    args
		want    []string
		want2   bool
		wantErr bool
	}{
		{
			name:    "P2PKH",
			args:    args{script: "76a914be027bf3eac907bd4ac8cb9c5293b6f37662722088ac"},
			want:    []string{"1JKgN43B9SyLuZH19H5ECvr4KcfrbVHzZ6"},
			want2:   true,
			wantErr: false,
		},
		{
			name:    "P2PK compressed",
			args:    args{script: "21020e46e79a2a8d12b9b5d12c7a91adb4e454edfae43c0a0cb805427d2ac7613fd9ac"},
			want:    []string{"1P3rU1Nk1pmc2BiWC8dEy9bZa1ZbMp5jfg"},
			want2:   false,
			wantErr: false,
		},
		{
			name:    "P2PK uncompressed",
			args:    args{script: "41041057356b91bfd3efeff5fc0fa8b865faafafb67bd653c5da2cd16ce15c7b86db0e622c8e1e135f68918a23601eb49208c1ac72c7b64a4ee99c396cf788da16ccac"},
			want:    []string{"1HY6bKYhFH7HF3F48ikvziPHLrEWPGwXcE"},
			want2:   false,
			wantErr: false,
		},
		{
			name:    "P2SH",
			args:    args{script: "a9140394b3cf9a44782c10105b93962daa8dba304d7f87"},
			want:    []string{"321x69Cb9HZLWwAWGiUBT1U81r1zPLnEjL"},
			want2:   true,
			wantErr: false,
		},
		{
			name:    "P2WPKH",
			args:    args{script: "00141c12afc6b2602607fdbc209f2a053c54ecd2c673"},
			want:    []string{"bc1qrsf2l34jvqnq0lduyz0j5pfu2nkd93nnq0qggn"},
			want2:   true,
			wantErr: false,
		},
		{
			name:    "P2WSH",
			args:    args{script: "002003973a40ec94c0d10f6f6f0e7a62ba2044b7d19db6ff2bf60651e17fb29d8d29"},
			want:    []string{"bc1qqwtn5s8vjnqdzrm0du885c46ypzt05vakmljhasx28shlv5a355sw5exgr"},
			want2:   true,
			wantErr: false,
		},
		{
			name:    "OP_RETURN ascii",
			args:    args{script: "6a0461686f6a"},
			want:    []string{"OP_RETURN (ahoj)"},
			want2:   false,
			wantErr: false,
		},
		{
			name:    "OP_RETURN OP_PUSHDATA1 ascii",
			args:    args{script: "6a4c0b446c6f7568792074657874"},
			want:    []string{"OP_RETURN (Dlouhy text)"},
			want2:   false,
			wantErr: false,
		},
		{
			name:    "OP_RETURN hex",
			args:    args{script: "6a072020f1686f6a20"},
			want:    []string{"OP_RETURN 2020f1686f6a20"},
			want2:   false,
			wantErr: false,
		},
	}

	parser := NewBitcoinParser(GetChainParams("main"), &Configuration{})

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			b, _ := hex.DecodeString(tt.args.script)
			got, got2, err := parser.GetAddressesFromAddrDesc(b)
			if (err != nil) != tt.wantErr {
				t.Errorf("GetAddressesFromAddrDesc() error = %v, wantErr %v", err, tt.wantErr)
				return
			}
			if !reflect.DeepEqual(got, tt.want) {
				t.Errorf("GetAddressesFromAddrDesc() = %v, want %v", got, tt.want)
			}
			if !reflect.DeepEqual(got2, tt.want2) {
				t.Errorf("GetAddressesFromAddrDesc() = %v, want %v", got2, tt.want2)
			}
		})
	}
}

var (
	testTx1, testTx2 bchain.Tx

	testTxPacked1 = "0001e2408ba8d7af5401000000017f9a22c9cbf54bd902400df746f138f37bcf5b4d93eb755820e974ba43ed5f42040000006a4730440220037f4ed5427cde81d55b9b6a2fd08c8a25090c2c2fff3a75c1a57625ca8a7118022076c702fe55969fa08137f71afd4851c48e31082dd3c40c919c92cdbc826758d30121029f6da5623c9f9b68a9baf9c1bc7511df88fa34c6c2f71f7c62f2f03ff48dca80feffffff019c9700000000000017a9146144d57c8aff48492c9dfb914e120b20bad72d6f8773d00700"
	testTxPacked2 = "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"
)

func init() {
	testTx1 = bchain.Tx{
		Hex:       "01000000017f9a22c9cbf54bd902400df746f138f37bcf5b4d93eb755820e974ba43ed5f42040000006a4730440220037f4ed5427cde81d55b9b6a2fd08c8a25090c2c2fff3a75c1a57625ca8a7118022076c702fe55969fa08137f71afd4851c48e31082dd3c40c919c92cdbc826758d30121029f6da5623c9f9b68a9baf9c1bc7511df88fa34c6c2f71f7c62f2f03ff48dca80feffffff019c9700000000000017a9146144d57c8aff48492c9dfb914e120b20bad72d6f8773d00700",
		Blocktime: 1519053802,
		Txid:      "056e3d82e5ffd0e915fb9b62797d76263508c34fe3e5dbed30dd3e943930f204",
		LockTime:  512115,
		Version:   1,
		Vin: []bchain.Vin{
			{
				ScriptSig: bchain.ScriptSig{
					Hex: "4730440220037f4ed5427cde81d55b9b6a2fd08c8a25090c2c2fff3a75c1a57625ca8a7118022076c702fe55969fa08137f71afd4851c48e31082dd3c40c919c92cdbc826758d30121029f6da5623c9f9b68a9baf9c1bc7511df88fa34c6c2f71f7c62f2f03ff48dca80",
				},
				Txid:     "425fed43ba74e9205875eb934d5bcf7bf338f146f70d4002d94bf5cbc9229a7f",
				Vout:     4,
				Sequence: 4294967294,
			},
		},
		Vout: []bchain.Vout{
			{
				ValueSat: *big.NewInt(38812),
				N:        0,
				ScriptPubKey: bchain.ScriptPubKey{
					Hex: "a9146144d57c8aff48492c9dfb914e120b20bad72d6f87",
					Addresses: []string{
						"3AZKvpKhSh1o8t1QrX3UeXG9d2BhCRnbcK",
					},
				},
			},
		},
	}

	testTx2 = bchain.Tx{
		Hex:       "010000000001019d64f0c72a0d206001decbffaa722eb1044534c74eee7a5df8318e42a4323ec10000000017160014550da1f5d25a9dae2eafd6902b4194c4c6500af6ffffffff02809698000000000017a914cd668d781ece600efa4b2404dc91fd26b8b8aed8870553d7360000000017a914246655bdbd54c7e477d0ea2375e86e0db2b8f80a8702473044022076aba4ad559616905fa51d4ddd357fc1fdb428d40cb388e042cdd1da4a1b7357022011916f90c712ead9a66d5f058252efd280439ad8956a967e95d437d246710bc9012102a80a5964c5612bb769ef73147b2cf3c149bc0fd4ecb02f8097629c94ab013ffd00000000",
		Blocktime: 1235678901,
		Txid:      "474e6795760ebe81cb4023dc227e5a0efe340e1771c89a0035276361ed733de7",
		LockTime:  0,
		Version:   1,
		Vin: []bchain.Vin{
			{
				ScriptSig: bchain.ScriptSig{
					Hex: "160014550da1f5d25a9dae2eafd6902b4194c4c6500af6",
				},
				Txid:     "c13e32a4428e31f85d7aee4ec7344504b12e72aaffcbde0160200d2ac7f0649d",
				Vout:     0,
				Sequence: 4294967295,
			},
		},
		Vout: []bchain.Vout{
			{
				ValueSat: *big.NewInt(10000000),
				N:        0,
				ScriptPubKey: bchain.ScriptPubKey{
					Hex: "a914cd668d781ece600efa4b2404dc91fd26b8b8aed887",
					Addresses: []string{
						"2NByHN6A8QYkBATzxf4pRGbCSHD5CEN2TRu",
					},
				},
			},
			{
				ValueSat: *big.NewInt(920081157),
				N:        1,
				ScriptPubKey: bchain.ScriptPubKey{
					Hex: "a914246655bdbd54c7e477d0ea2375e86e0db2b8f80a87",
					Addresses: []string{
						"2MvZguYaGjM7JihBgNqgLF2Ca2Enb76Hj9D",
					},
				},
			},
		},
	}
}

func Test_PackTx(t *testing.T) {
	type args struct {
		tx        bchain.Tx
		height    uint32
		blockTime int64
		parser    *BitcoinParser
	}
	tests := []struct {
		name    string
		args    args
		want    string
		wantErr bool
	}{
		{
			name: "btc-1",
			args: args{
				tx:        testTx1,
				height:    123456,
				blockTime: 1519053802,
				parser:    NewBitcoinParser(GetChainParams("main"), &Configuration{}),
			},
			want:    testTxPacked1,
			wantErr: false,
		},
		{
			name: "testnet-1",
			args: args{
				tx:        testTx2,
				height:    510234,
				blockTime: 1235678901,
				parser:    NewBitcoinParser(GetChainParams("test"), &Configuration{}),
			},
			want:    testTxPacked2,
			wantErr: false,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got, err := tt.args.parser.PackTx(&tt.args.tx, tt.args.height, tt.args.blockTime)
			if (err != nil) != tt.wantErr {
				t.Errorf("packTx() error = %v, wantErr %v", err, tt.wantErr)
				return
			}
			h := hex.EncodeToString(got)
			if !reflect.DeepEqual(h, tt.want) {
				t.Errorf("packTx() = %v, want %v", h, tt.want)
			}
		})
	}
}

func Test_UnpackTx(t *testing.T) {
	type args struct {
		packedTx string
		parser   *BitcoinParser
	}
	tests := []struct {
		name    string
		args    args
		want    *bchain.Tx
		want1   uint32
		wantErr bool
	}{
		{
			name: "btc-1",
			args: args{
				packedTx: testTxPacked1,
				parser:   NewBitcoinParser(GetChainParams("main"), &Configuration{}),
			},
			want:    &testTx1,
			want1:   123456,
			wantErr: false,
		},
		{
			name: "testnet-1",
			args: args{
				packedTx: testTxPacked2,
				parser:   NewBitcoinParser(GetChainParams("test"), &Configuration{}),
			},
			want:    &testTx2,
			want1:   510234,
			wantErr: false,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			b, _ := hex.DecodeString(tt.args.packedTx)
			got, got1, err := tt.args.parser.UnpackTx(b)
			if (err != nil) != tt.wantErr {
				t.Errorf("unpackTx() error = %v, wantErr %v", err, tt.wantErr)
				return
			}
			if !reflect.DeepEqual(got, tt.want) {
				t.Errorf("unpackTx() got = %v, want %v", got, tt.want)
			}
			if got1 != tt.want1 {
				t.Errorf("unpackTx() got1 = %v, want %v", got1, tt.want1)
			}
		})
	}
}