// 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 poller_test

import (
	"fmt"

	. "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/omni/shared/constants"
	"github.com/vulcanize/vulcanizedb/pkg/omni/shared/contract"
	"github.com/vulcanize/vulcanizedb/pkg/omni/shared/helpers/test_helpers"
	"github.com/vulcanize/vulcanizedb/pkg/omni/shared/poller"
)

var _ = Describe("Poller", func() {

	var p poller.Poller
	var con *contract.Contract
	var db *postgres.DB
	var bc core.BlockChain

	BeforeEach(func() {
		db, bc = test_helpers.SetupDBandBC()
		p = poller.NewPoller(bc, db)
	})

	AfterEach(func() {
		test_helpers.TearDown(db)
	})

	Describe("PollContract", func() {
		It("Polls specified contract methods using contract's token holder address list", func() {
			con = test_helpers.SetupTusdContract(nil, []string{"balanceOf"})
			Expect(con.Abi).To(Equal(constants.TusdAbiString))
			con.StartingBlock = 6707322
			con.LastBlock = 6707323
			con.TknHolderAddrs = map[string]bool{
				"0xfE9e8709d3215310075d67E3ed32A380CCf451C8": true,
				"0x3f5CE5FBFe3E9af3971dD833D26bA9b5C936f0bE": true,
			}

			err := p.PollContract(*con)
			Expect(err).ToNot(HaveOccurred())

			scanStruct := test_helpers.BalanceOf{}

			err = db.QueryRowx(fmt.Sprintf("SELECT * FROM c%s.balanceof_method WHERE who_ = '0xfE9e8709d3215310075d67E3ed32A380CCf451C8' AND block = '6707322'", constants.TusdContractAddress)).StructScan(&scanStruct)
			Expect(err).ToNot(HaveOccurred())
			Expect(scanStruct.Balance).To(Equal("66386309548896882859581786"))
			Expect(scanStruct.TokenName).To(Equal("TrueUSD"))

			err = db.QueryRowx(fmt.Sprintf("SELECT * FROM c%s.balanceof_method WHERE who_ = '0xfE9e8709d3215310075d67E3ed32A380CCf451C8' AND block = '6707323'", constants.TusdContractAddress)).StructScan(&scanStruct)
			Expect(err).ToNot(HaveOccurred())
			Expect(scanStruct.Balance).To(Equal("66386309548896882859581786"))
			Expect(scanStruct.TokenName).To(Equal("TrueUSD"))

			err = db.QueryRowx(fmt.Sprintf("SELECT * FROM c%s.balanceof_method WHERE who_ = '0x3f5CE5FBFe3E9af3971dD833D26bA9b5C936f0bE' AND block = '6707322'", constants.TusdContractAddress)).StructScan(&scanStruct)
			Expect(err).ToNot(HaveOccurred())
			Expect(scanStruct.Balance).To(Equal("17982350181394112023885864"))
			Expect(scanStruct.TokenName).To(Equal("TrueUSD"))

			err = db.QueryRowx(fmt.Sprintf("SELECT * FROM c%s.balanceof_method WHERE who_ = '0x3f5CE5FBFe3E9af3971dD833D26bA9b5C936f0bE' AND block = '6707323'", constants.TusdContractAddress)).StructScan(&scanStruct)
			Expect(err).ToNot(HaveOccurred())
			Expect(scanStruct.Balance).To(Equal("17982350181394112023885864"))
			Expect(scanStruct.TokenName).To(Equal("TrueUSD"))
		})

		It("Does not poll and persist any methods if none are specified", func() {
			con = test_helpers.SetupTusdContract(nil, nil)
			Expect(con.Abi).To(Equal(constants.TusdAbiString))
			con.StartingBlock = 6707322
			con.LastBlock = 6707323
			con.TknHolderAddrs = map[string]bool{
				"0xfE9e8709d3215310075d67E3ed32A380CCf451C8": true,
				"0x3f5CE5FBFe3E9af3971dD833D26bA9b5C936f0bE": true,
			}

			err := p.PollContract(*con)
			Expect(err).ToNot(HaveOccurred())

			scanStruct := test_helpers.BalanceOf{}

			err = db.QueryRowx(fmt.Sprintf("SELECT * FROM c%s.balanceof_method WHERE who_ = '0xfE9e8709d3215310075d67E3ed32A380CCf451C8' AND block = '6707322'", constants.TusdContractAddress)).StructScan(&scanStruct)
			Expect(err).To(HaveOccurred())
		})
	})

	Describe("PollMethod", func() {
		It("Polls a single contract method", func() {
			var name = new(string)
			err := p.FetchContractData(constants.TusdAbiString, constants.TusdContractAddress, "name", nil, &name, 6197514)
			Expect(err).ToNot(HaveOccurred())
			Expect(*name).To(Equal("TrueUSD"))
		})
	})
})