// 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 constants

import (
	"github.com/ethereum/go-ethereum/common"
	"github.com/vulcanize/vulcanizedb/pkg/contract_watcher/shared/helpers"
	"github.com/vulcanize/vulcanizedb/pkg/core"
	"github.com/vulcanize/vulcanizedb/pkg/filters"
)

// Event enums
type Event int

const (
	TransferEvent Event = 0
	ApprovalEvent Event = 1
	BurnEvent     Event = 2
	MintEvent     Event = 3
	NewOwnerEvent Event = 4
)

// String returns the string name for an event
func (e Event) String() string {
	strings := [...]string{
		"Transfer",
		"Approval",
		"Burn",
		"Mint",
		"NewOwner",
	}

	if e < TransferEvent || e > NewOwnerEvent {
		return "Unknown"
	}

	return strings[e]
}

// Signature returns the keccak256 signature for an event
func (e Event) Signature() string {
	strings := [...]string{
		helpers.GenerateSignature("Transfer(address,address,uint256)"),
		helpers.GenerateSignature("Approval(address,address,uint256)"),
		helpers.GenerateSignature("Burn(address,uint256)"),
		helpers.GenerateSignature("Mint(address,uint256)"),
		helpers.GenerateSignature("NewOwner(bytes32,bytes32,address)"),
	}

	if e < TransferEvent || e > NewOwnerEvent {
		return "Unknown"
	}

	return strings[e]
}

// Contract Addresses
var DaiContractAddress = "0x89d24a6b4ccb1b6faa2625fe562bdd9a23260359"
var TusdContractAddress = "0x8dd5fbCe2F6a956C3022bA3663759011Dd51e73E"
var EnsContractAddress = "0x314159265dD8dbb310642f98f50C066173C1259b"
var MarketPlaceContractAddress = "0x8e5660b4Ab70168b5a6fEeA0e0315cb49c8Cd539"
var MolochContractAddress = "0x1fd169A4f5c59ACf79d0Fd5d91D1201EF1Bce9f1"
var PublicResolverAddress = "0x1da022710dF5002339274AaDEe8D58218e9D6AB5"

// Contract Abis
var DaiAbiString = 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var TusdAbiString = 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var MarketPlaceAbiString = 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// ABIs is a look-up table for ABI strings
var ABIs = map[common.Address]string{
	common.HexToAddress("0x314159265dD8dbb310642f98f50C066173C1259b"): ENSAbiString,
	common.HexToAddress("0x8dd5fbCe2F6a956C3022bA3663759011Dd51e73E"): TusdAbiString,
	common.HexToAddress("0x89d24a6b4ccb1b6faa2625fe562bdd9a23260359"): DaiAbiString,
}

// Filters
// To add additional filter parameters, filter by other Topics e.g. for a Transfer event filter Topics[1] to filter for a specific 'from' address
var TusdGenericFilters = []filters.LogFilter{
	{
		Name:      BurnEvent.String(),
		FromBlock: 5197514,
		ToBlock:   -1,
		Address:   TusdContractAddress,
		Topics:    core.Topics{BurnEvent.Signature()},
	},
	{
		Name:      MintEvent.String(),
		FromBlock: 5197514,
		ToBlock:   -1,
		Address:   TusdContractAddress,
		Topics:    core.Topics{MintEvent.Signature()},
	},
}