// VulcanizeDB
// Copyright © 2018 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 integration_tests

import (
	"github.com/ethereum/go-ethereum/common"
	. "github.com/onsi/ginkgo"
	. "github.com/onsi/gomega"
	"github.com/vulcanize/vulcanizedb/pkg/core"
	"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres"
	"github.com/vulcanize/vulcanizedb/pkg/transformers/factories"
	"github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
	"github.com/vulcanize/vulcanizedb/pkg/transformers/test_data"

	"github.com/vulcanize/vulcanizedb/pkg/transformers/drip_drip"
	"github.com/vulcanize/vulcanizedb/pkg/transformers/shared/constants"
	"github.com/vulcanize/vulcanizedb/test_config"
)

var _ = Describe("DripDrip Transformer", func() {
	var (
		db         *postgres.DB
		blockChain core.BlockChain
		config     shared.TransformerConfig
	)

	BeforeEach(func() {
		rpcClient, ethClient, err := getClients(ipc)
		Expect(err).NotTo(HaveOccurred())
		blockChain, err = getBlockChain(rpcClient, ethClient)
		Expect(err).NotTo(HaveOccurred())
		db = test_config.NewTestDB(blockChain.Node())
		test_config.CleanTestDB(db)

		config = shared.TransformerConfig{
			ContractAddresses:   []string{test_data.KovanDripContractAddress},
			ContractAbi:         test_data.KovanDripABI,
			Topic:               test_data.KovanDripDripSignature,
			StartingBlockNumber: 0,
			EndingBlockNumber:   -1,
		}
	})

	It("transforms DripDrip log events", func() {
		blockNumber := int64(8934775)
		config.StartingBlockNumber = blockNumber
		config.EndingBlockNumber = blockNumber

		header, err := persistHeader(db, blockNumber, blockChain)
		Expect(err).NotTo(HaveOccurred())

		initializer := factories.LogNoteTransformer{
			Config:     config,
			Converter:  &drip_drip.DripDripConverter{},
			Repository: &drip_drip.DripDripRepository{},
		}
		transformer := initializer.NewLogNoteTransformer(db)

		fetcher := shared.NewFetcher(blockChain)
		logs, err := fetcher.FetchLogs(
			shared.HexStringsToAddresses(config.ContractAddresses),
			[]common.Hash{common.HexToHash(config.Topic)},
			header)
		Expect(err).NotTo(HaveOccurred())

		err = transformer.Execute(logs, header, constants.HeaderMissing)
		Expect(err).NotTo(HaveOccurred())

		var dbResults []drip_drip.DripDripModel
		err = db.Select(&dbResults, `SELECT ilk from maker.drip_drip`)
		Expect(err).NotTo(HaveOccurred())

		Expect(len(dbResults)).To(Equal(1))
		dbResult := dbResults[0]
		Expect(dbResult.Ilk).To(Equal("4554480000000000000000000000000000000000000000000000000000000000"))
	})

	It("rechecks drip drip event", func() {
		blockNumber := int64(8934775)
		config.StartingBlockNumber = blockNumber
		config.EndingBlockNumber = blockNumber

		header, err := persistHeader(db, blockNumber, blockChain)
		Expect(err).NotTo(HaveOccurred())

		initializer := factories.LogNoteTransformer{
			Config:     config,
			Converter:  &drip_drip.DripDripConverter{},
			Repository: &drip_drip.DripDripRepository{},
		}
		transformer := initializer.NewLogNoteTransformer(db)

		fetcher := shared.NewFetcher(blockChain)
		logs, err := fetcher.FetchLogs(
			shared.HexStringsToAddresses(config.ContractAddresses),
			[]common.Hash{common.HexToHash(config.Topic)},
			header)
		Expect(err).NotTo(HaveOccurred())

		err = transformer.Execute(logs, header, constants.HeaderMissing)
		Expect(err).NotTo(HaveOccurred())

		err = transformer.Execute(logs, header, constants.HeaderRecheck)
		Expect(err).NotTo(HaveOccurred())

		var headerID int64
		err = db.Get(&headerID, `SELECT id FROM public.headers WHERE block_number = $1`, blockNumber)
		Expect(err).NotTo(HaveOccurred())

		var dripdripChecked []int
		err = db.Select(&dripdripChecked, `SELECT drip_drip_checked FROM public.checked_headers WHERE header_id = $1`, headerID)
		Expect(err).NotTo(HaveOccurred())
	})
})