package priceupdater

import (
	"context"
	"os"
	"testing"

	ethCommon "github.com/ethereum/go-ethereum/common"
	"github.com/hermeznetwork/hermez-node/common"
	dbUtils "github.com/hermeznetwork/hermez-node/db"
	"github.com/hermeznetwork/hermez-node/db/historydb"
	"github.com/hermeznetwork/hermez-node/test"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

var historyDB *historydb.HistoryDB

const usdtAddr = "0xdac17f958d2ee523a2206206994597c13d831ec7"

func TestPriceUpdaterBitfinex(t *testing.T) {
	// Init DB
	pass := os.Getenv("POSTGRES_PASS")
	db, err := dbUtils.InitSQLDB(5432, "localhost", "hermez", pass, "hermez")
	if err != nil {
		panic(err)
	}
	historyDB = historydb.NewHistoryDB(db, db, nil)
	// Clean DB
	test.WipeDB(historyDB.DB())
	// Populate DB
	// Gen blocks and add them to DB
	blocks := test.GenBlocks(1, 2)
	require.NoError(t, historyDB.AddBlocks(blocks))
	// Gen tokens and add them to DB
	tokens := []common.Token{
		{
			TokenID:     1,
			EthBlockNum: blocks[0].Num,
			EthAddr:     ethCommon.HexToAddress("0x1"),
			Name:        "DAI",
			Symbol:      "DAI",
			Decimals:    18,
		}, // Used to test get by SC addr
		{
			TokenID:     2,
			EthBlockNum: blocks[0].Num,
			EthAddr:     ethCommon.HexToAddress(usdtAddr),
			Name:        "Tether",
			Symbol:      "USDT",
			Decimals:    18,
		}, // Used to test get by token symbol
		{
			TokenID:     3,
			EthBlockNum: blocks[0].Num,
			EthAddr:     ethCommon.HexToAddress("0x2"),
			Name:        "FOO",
			Symbol:      "FOO",
			Decimals:    18,
		}, // Used to test ignore
		{
			TokenID:     4,
			EthBlockNum: blocks[0].Num,
			EthAddr:     ethCommon.HexToAddress("0x3"),
			Name:        "BAR",
			Symbol:      "BAR",
			Decimals:    18,
		}, // Used to test static
		{
			TokenID:     5,
			EthBlockNum: blocks[0].Num,
			EthAddr:     ethCommon.HexToAddress("0x1f9840a85d5af5bf1d1762f925bdaddc4201f984"),
			Name:        "Uniswap",
			Symbol:      "UNI",
			Decimals:    18,
		}, // Used to test default
	}
	require.NoError(t, historyDB.AddTokens(tokens)) // ETH token exist in DB by default
	// Update token price used to test ignore
	ignoreValue := 44.44
	require.NoError(t, historyDB.UpdateTokenValue(tokens[2].EthAddr, ignoreValue))

	// Prepare token config
	staticValue := 0.12345
	tc := []TokenConfig{
		// ETH and UNI tokens use default method
		{ // DAI uses SC addr
			UpdateMethod: UpdateMethodTypeBitFinexV2,
			Addr:         ethCommon.HexToAddress("0x1"),
			Symbol:       "DAI",
		},
		{ // USDT uses symbol
			UpdateMethod: UpdateMethodTypeCoingeckoV3,
			Addr:         ethCommon.HexToAddress(usdtAddr),
		},
		{ // FOO uses ignore
			UpdateMethod: UpdateMethodTypeIgnore,
			Addr:         ethCommon.HexToAddress("0x2"),
		},
		{ // BAR uses static
			UpdateMethod: UpdateMethodTypeStatic,
			Addr:         ethCommon.HexToAddress("0x3"),
			StaticValue:  staticValue,
		},
	}

	bitfinexV2URL := "https://api-pub.bitfinex.com/v2/"
	coingeckoV3URL := "https://api.coingecko.com/api/v3/"
	// Init price updater
	pu, err := NewPriceUpdater(
		UpdateMethodTypeCoingeckoV3,
		tc,
		historyDB,
		bitfinexV2URL,
		coingeckoV3URL,
	)
	require.NoError(t, err)
	// Update token list
	require.NoError(t, pu.UpdateTokenList())
	// Update prices
	pu.UpdatePrices(context.Background())

	// Check results: get tokens from DB
	fetchedTokens, err := historyDB.GetTokensTest()
	require.NoError(t, err)
	// Check that tokens that are updated via API have value:
	// ETH
	require.NotNil(t, fetchedTokens[0].USDUpdate)
	assert.Greater(t, *fetchedTokens[0].USD, 0.0)
	// DAI
	require.NotNil(t, fetchedTokens[1].USDUpdate)
	assert.Greater(t, *fetchedTokens[1].USD, 0.0)
	// USDT
	require.NotNil(t, fetchedTokens[2].USDUpdate)
	assert.Greater(t, *fetchedTokens[2].USD, 0.0)
	// UNI
	require.NotNil(t, fetchedTokens[5].USDUpdate)
	assert.Greater(t, *fetchedTokens[5].USD, 0.0)
	// Check ignored token
	assert.Equal(t, ignoreValue, *fetchedTokens[3].USD)
	// Check static value
	assert.Equal(t, staticValue, *fetchedTokens[4].USD)
}