// VulcanizeDB
// Copyright © 2019 Vulcanize

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.

// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package sql_test

import (
	"context"
	"testing"

	"github.com/ipfs/go-cid"
	"github.com/jmoiron/sqlx"
	"github.com/multiformats/go-multihash"
	"github.com/stretchr/testify/require"

	"github.com/ethereum/go-ethereum/core/types"
	"github.com/ethereum/go-ethereum/statediff/indexer/database/sql"
	"github.com/ethereum/go-ethereum/statediff/indexer/database/sql/postgres"
	"github.com/ethereum/go-ethereum/statediff/indexer/interfaces"
	"github.com/ethereum/go-ethereum/statediff/indexer/ipld"
	"github.com/ethereum/go-ethereum/statediff/indexer/mocks"
	"github.com/ethereum/go-ethereum/statediff/indexer/test_helpers"
)

var (
	legacyData      = mocks.NewLegacyData()
	mockLegacyBlock *types.Block
	legacyHeaderCID cid.Cid
)

func setupLegacySQLX(t *testing.T) {
	mockLegacyBlock = legacyData.MockBlock
	legacyHeaderCID, _ = ipld.RawdataToCid(ipld.MEthHeader, legacyData.MockHeaderRlp, multihash.KECCAK_256)

	db, err = postgres.SetupSQLXDB()
	require.NoError(t, err)

	ind, err = sql.NewStateDiffIndexer(context.Background(), legacyData.Config, db)
	require.NoError(t, err)
	var tx interfaces.Batch
	tx, err = ind.PushBlock(
		mockLegacyBlock,
		legacyData.MockReceipts,
		legacyData.MockBlock.Difficulty())
	require.NoError(t, err)

	defer func() {
		if err := tx.Submit(err); err != nil {
			t.Fatal(err)
		}
	}()
	for _, node := range legacyData.StateDiffs {
		err = ind.PushStateNode(tx, node, mockLegacyBlock.Hash().String())
		require.NoError(t, err)
	}

	test_helpers.ExpectEqual(t, tx.(*sql.BatchTx).BlockNumber, legacyData.BlockNumber.Uint64())
}

func TestLegacySQLXIndexer(t *testing.T) {
	t.Run("Publish and index header IPLDs", func(t *testing.T) {
		setupLegacySQLX(t)
		defer tearDown(t)
		defer checkTxClosure(t, 0, 0, 0)
		pgStr := `SELECT cid, td, reward, block_hash, coinbase
				FROM eth.header_cids
				WHERE block_number = $1`
		// check header was properly indexed
		type res struct {
			CID       string
			TD        string
			Reward    string
			BlockHash string `db:"block_hash"`
			Coinbase  string `db:"coinbase"`
		}
		header := new(res)
		err = db.QueryRow(context.Background(), pgStr, legacyData.BlockNumber.Uint64()).(*sqlx.Row).StructScan(header)
		require.NoError(t, err)

		test_helpers.ExpectEqual(t, header.CID, legacyHeaderCID.String())
		test_helpers.ExpectEqual(t, header.TD, legacyData.MockBlock.Difficulty().String())
		test_helpers.ExpectEqual(t, header.Reward, "5000000000000011250")
		test_helpers.ExpectEqual(t, header.Coinbase, legacyData.MockHeader.Coinbase.String())
		require.Nil(t, legacyData.MockHeader.BaseFee)
	})
}