synapsecns/sdk | Build 2003345596 | src/bridge/bridge.ts | Coveralls

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import {toLower} from "lodash-es";

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import {ChainId}  from "@chainid";

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import {Networks} from "@networks";

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import {executePopulatedTransaction, rejectPromise} from "@common/utils";

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import {SynapseContracts} from "@common/synapse_contracts";

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import * as SynapseEntities from "@entities";

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import {

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    type ID,

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    SwapType,

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    rpcProviderForChain,

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    terraRpcProvider,

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    tokenSwitch,

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    TerraSignerWrapper,

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    validateTerraAddress

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} from "@internal/index";

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import type {

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    BridgeConfigV3Contract,

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    GenericZapBridgeContract,

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    L1BridgeZapContract,

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    SynapseBridgeContract

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} from "@contracts";

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import {Tokens}    from "@tokens";

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import {TokenSwap} from "@tokenswap";

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import {

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    type Token,

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    instanceOfToken

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} from "@token";

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import type {GenericSigner, GenericTxnRequest, GenericTxnResponse, NumberMap} from "@common/types";

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import {GasUtils}                   from "./gasutils";

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import {

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    BridgeUtils,

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    CanBridgeError

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} from "./bridgeutils";

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import {ERC20, MAX_APPROVAL_AMOUNT} from "./erc20";

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import {Zero}                    from "@ethersproject/constants";

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import {isAddress}   from "@ethersproject/address";

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import {BigNumber, BigNumberish} from "@ethersproject/bignumber";

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import {

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    Signer as EthersSigner

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} from "@ethersproject/abstract-signer";

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import type {Provider} from "@ethersproject/providers";

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import type {ContractTransaction, PopulatedTransaction} from "@ethersproject/contracts";

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import {

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    MsgExecuteContract,

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    LCDClient,

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    Wallet as TerraWallet,

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    BlockTxBroadcastResult

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} from "@terra-money/terra.js";

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import bech32 from "bech32";

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const TEN = BigNumber.from(10);

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/**

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 * Bridge provides a wrapper around common Synapse Bridge interactions, such as output estimation, checking supported swaps/bridges,

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 * and most importantly, executing Bridge transactions.

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*/

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export namespace Bridge {

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    export type CanBridgeResult = {

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        canBridge:     boolean;

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        reasonUnable?: string;

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        amount?:       BigNumber;

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    type NeedsTokenApproveResult = {

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        needsApproval:     boolean;

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        currentAllowance?: BigNumber;

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    export type BridgeOutputEstimate = {

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        amountToReceive: BigNumber,

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        bridgeFee:       BigNumber,

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/**

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     * @param {Token} tokenFrom {@link Token} user will send to the bridge on the source chain

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     * @param {Token} tokenTo {@link Token} user will receive from the bridge on the destination chain

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     * @param {number} chainIdTo Chain ID of the destination chain

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     * @param {BigNumber} amountFrom not necessarily used by this interface, and overriden in BridgeParamsWithAmounts.

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*/

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    export interface BridgeParams {

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        tokenFrom:   Token,

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        tokenTo:     Token

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        chainIdTo:   number,

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        amountFrom?: BigNumber,

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/**

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     * @param {BigNumber} amountFrom Amount of tokenFrom (denoted in wei) that the user will send to the bridge on the source chain.

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     * @param {BigNumber} amountTo Amount of tokenTo (denoted in wei) that the user will receive from the bridge on the destination chain.

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     * @param {string} addressTo Optional, user can provide an address other than the one retrieved from signer to receive tokens

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     * on the destination chain.

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*/

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    export interface BridgeTransactionParams extends BridgeParams {

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        amountFrom: BigNumber;

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        amountTo:   BigNumber;

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        addressTo?: string;

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    type EasyArgsCheck = {

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        isEasy:   boolean;

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        castArgs: BridgeUtils.BridgeTxParams;

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        txn?:     Promise<PopulatedTransaction>;

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    type BridgeTokenArgs = {

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        fromChainTokens: Token[];

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        toChainTokens:   Token[];

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        tokenFrom:       Token;

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        tokenTo:         Token;

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        tokenIndexFrom:  number;

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        tokenIndexTo:    number;

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    interface CheckCanBridgeParams {

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        address?: string;

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        signer?:  EthersSigner;

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        token:    Token;

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        amount:   BigNumberish;

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    interface CanBridgeParams extends CheckCanBridgeParams {

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        address: string;

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/**

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     * SynapseBridge is a wrapper around any Synapse Bridge contract which exists on chains supported by the Synapse Protocol.

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*/

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    export class SynapseBridge {

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        protected network: Networks.Network;

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        protected chainId: number;

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        protected _provider: Provider | LCDClient;

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        private readonly bridgeAddress: string;

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        private readonly bridgeInstance:           SynapseBridgeContract;

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        private readonly networkZapBridgeInstance: GenericZapBridgeContract;

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        private readonly isTerra:      boolean;

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        private readonly isL2Zap:      boolean;

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        private readonly isL2ETHChain: boolean;

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        private readonly zapBridgeAddress: string;

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        private readonly bridgeConfigInstance: BridgeConfigV3Contract = SynapseEntities.BridgeConfigV3ContractInstance();

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        private readonly zapBridgeInstance: L1BridgeZapContract = SynapseEntities.L1BridgeZapContractInstance({

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            chainId: ChainId.ETH,

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            signerOrProvider: rpcProviderForChain(ChainId.ETH),

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});

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        readonly requiredConfirmations: number;

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        constructor(args: {

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            network: Networks.Network | number,

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            provider?: Provider

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        }) {

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            let {network, provider} = args;

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            this.network = network instanceof Networks.Network ? network : Networks.fromChainId(network);

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            this.chainId = this.network.chainId;

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            this.requiredConfirmations = getRequiredConfirmationsForBridge(this.network);

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            this.isTerra = this.chainId === ChainId.TERRA;

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            this.isL2Zap = this.network.zapIsL2BridgeZap;

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            this.isL2ETHChain = BridgeUtils.isL2ETHChain(this.chainId);

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            this._provider = provider ?? (this.isTerra

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                ? terraRpcProvider(this.chainId)

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                : rpcProviderForChain(this.chainId)

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);

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            const contractAddrs = SynapseContracts.contractsForChainId(this.chainId);

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            this.bridgeAddress    = contractAddrs.bridgeAddress;

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            this.zapBridgeAddress = contractAddrs.bridgeZapAddress;

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            if (!this.isTerra) {

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                const factoryParams = {chainId: this.chainId, signerOrProvider: (this._provider as Provider)};

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            this.bridgeInstance = SynapseEntities.SynapseBridgeContractInstance(factoryParams);

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            if (this.zapBridgeAddress && this.zapBridgeAddress !== "") {

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                this.networkZapBridgeInstance = SynapseEntities.GenericZapBridgeContractInstance(factoryParams);

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        private get provider(): Provider {

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            return this._provider as Provider

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        private get terraProvider(): LCDClient {

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            return this._provider as LCDClient

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        bridgeVersion(): Promise<BigNumber> {

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            if (this.isTerra) {

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                return Promise.resolve(BigNumber.from(6))

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            return this.bridgeInstance.bridgeVersion()

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        WETH_ADDRESS(): Promise<string> {

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            if (this.isTerra) {

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                return Promise.resolve("0x0000000000000000000000000000000000000000")

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            return this.bridgeInstance.WETH_ADDRESS()

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/**

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         * Returns whether a swap/bridge from this Bridge's chain to another chain between two tokens

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         * is supported.

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         * @param {Token} args.tokenFrom {@link Token} user will send to the bridge

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         * @param {Token} args.tokenTo {@link Token} user will receive from the bridge on the destination chain

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         * @param {number} args.chainIdTo Chain ID of the destination chain

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         * @return boolean value denoting whether the input params constitute a valid swap/bridge, along with a

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         * string value denoting the reason for an unsupported swap, if applicable.

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*/

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        swapSupported(args: {

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            tokenFrom: Token,

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            tokenTo:   Token

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            chainIdTo: number,

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        }): [boolean, string] {

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            const {swapSupported, reasonNotSupported} = bridgeSwapSupported({...args, chainIdFrom: this.chainId});

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            return [swapSupported, reasonNotSupported?.reason || ""]

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/**

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         * Returns the estimated output of a given token on the destination chain were a user to send

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         * some amount of another given token on the source chain.

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         * @param {BridgeParams} args Parameters for the output estimation.

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         * @return {Promise<BridgeOutputEstimate>} Object containing the estimated output of args.tokenTo, as well

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         * as the estimated fee to be taken by the bridge. Note that the estimated output already accounts for the

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         * bridge fee, so the bridge fee is entirely for user-facing purposes. Do not use it for calculations.

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*/

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        async estimateBridgeTokenOutput(args: BridgeParams): Promise<BridgeOutputEstimate> {

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            return this.checkSwapSupported(args)

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                .then(() => this.calculateBridgeRate(args))

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                .catch(rejectPromise)

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/**

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         * Returns a populated transaction for initiating a token bridge between this Bridge (the source chain) and the bridge contract on the destination chain.

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         * Note that this function **does not** send a signed transaction.

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         * @param {BridgeTransactionParams} args Parameters for the bridge transaction

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         * @return {Promise<PopulatedTransaction>} Populated transaction instance which can be sent via ones choice

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         * of web3/ethers/etc.

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*/

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        async buildBridgeTokenTransaction(args: BridgeTransactionParams): Promise<PopulatedTransaction | MsgExecuteContract> {

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            const

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                {addressTo} = args,

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                tokenArgs = this.makeBridgeTokenArgs(args),

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                {tokenFrom, tokenTo} = tokenArgs;

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            if ((!addressTo) || addressTo === "") {

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                return rejectPromise(

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                    new CanBridgeError("BridgeTransactionParams.addressTo cannot be empty string or undefined")

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            if (args.chainIdTo === ChainId.TERRA && !validateTerraAddress(args.addressTo)) {

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                return rejectPromise(

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                    new CanBridgeError(`${args.addressTo} passed as BridgeTransactionParams.addressTo is not a valid Terra address`)

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            } else if (args.chainIdTo !== ChainId.TERRA && !isAddress(args.addressTo)) {

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                return rejectPromise(

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                    new CanBridgeError(`${args.addressTo} passed as BridgeTransactionParams.addressTo is not a valid EVM address`)

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            args = {...args, tokenFrom, tokenTo};

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            let newTxn: Promise<PopulatedTransaction>;

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            if (args.tokenFrom.isEqual(Tokens.UST)) {

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                if (this.isTerra) {

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                    return this.buildTerraBridgeTxn(args)

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                const redeemArgs: [BigNumberish, string, BigNumberish] = [

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                    args.chainIdTo,

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                    Tokens.UST.address(this.chainId),

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                    args.amountFrom

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];

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                if (args.chainIdTo === ChainId.TERRA) {

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                    newTxn = this.bridgeInstance

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                        .populateTransaction

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                        .redeemV2(

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                            bech32.decode(args.addressTo).words,

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                            ...redeemArgs

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);

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                } else {

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                    newTxn = this.bridgeInstance

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                        .populateTransaction

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                        .redeem(

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                            args.addressTo,

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                            ...redeemArgs

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);

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            } else {

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                newTxn = this.chainId === ChainId.ETH

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                ? this.buildETHMainnetBridgeTxn(args, tokenArgs)

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                : this.buildL2BridgeTxn(args, tokenArgs);

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            return newTxn

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                .then(txn =>

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                    GasUtils.populateGasParams(this.chainId, txn, "bridge")

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/**

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         * Starts the Bridge process between this Bridge (the source chain) and the bridge contract on the destination chain.

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         * Note that this function **does** send a signed transaction.

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         * @param {BridgeTransactionParams} args Parameters for the bridge transaction.

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         * @param {EthersSigner} signer Some instance which implements the Ethersjs {@link EthersSigner} interface.

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         * @param {boolean} callStatic (Optional, default: false) if true, uses provider.callStatic instead of actually sending the signed transaction.

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         * @return {Promise<ContractTransaction>}

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*/

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        async executeBridgeTokenTransaction(

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            args:       BridgeTransactionParams,

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            signer:     EthersSigner | TerraWallet | GenericSigner,

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            callStatic: boolean=false

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        ): Promise<ContractTransaction | BlockTxBroadcastResult> {

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            try {

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                await this.checkSwapSupported(args);

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                /* c8 ignore next 2 */

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                return rejectPromise(e);

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            const {tokenFrom, amountFrom, addressTo} = args;

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            let txSigner: GenericSigner;

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            let signerAddress: string;

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            if (signer instanceof TerraWallet) {

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                txSigner = new TerraSignerWrapper(signer);

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            } else {

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                txSigner = signer;

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            signerAddress = await txSigner.getAddress();

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            let checkArgs = {token: tokenFrom, amount: amountFrom, address: toLower(signerAddress)};

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            const sendTxn = (txn: GenericTxnRequest): Promise<GenericTxnResponse> => {

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            return this.checkCanBridge(checkArgs)

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                .then(({canBridge, reasonUnable, amount}) => {

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                    if (!canBridge) {

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                        const rejection = new CanBridgeError(reasonUnable, amount);

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                        return rejectPromise(rejection)

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                    return this.buildBridgeTokenTransaction(args)

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                        .then(sendTxn)

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                        .catch(rejectPromise)

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})

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/**

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         * Builds an ethers PopulatedTransaction instance for an ERC20 Approve call,

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         * approving some amount of a given token to be spent by the Synapse Bridge on its chain.

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         * The returned PopulatedTransaction must then be passed to the user via Web3 or some other

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         * framework so they can ultimately send the transaction.

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         * Should ALWAYS be called before performing any bridge transactions to ensure they don't fail.

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         * @param {Object} args

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         * @param {Token|string} args.token {@link Token} instance or valid on-chain address of the token the user will be sending

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         * to the bridge on the source chain.

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         * @param {BigNumberish} args.amount Optional, a specific amount of args.token to approve. By default, this function

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         * builds an Approve call using an "infinite" approval amount.

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         * @return {Promise<PopulatedTransaction>} Populated transaction instance which can be sent via ones choice

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         * of web3/ethers/etc.

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*/

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        async buildApproveTransaction(args: {

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            token:   Token | string,

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            amount?: BigNumberish

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        }): Promise<PopulatedTransaction> {

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            const [approveArgs, tokenAddress] = this.buildERC20ApproveArgs(args);

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            return ERC20.buildApproveTransaction(approveArgs, {tokenAddress, chainId: this.chainId})

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/**

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         * Builds and executes an ERC20 Approve call,

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         * approving some amount of a given token to be spent by the Synapse Bridge on its chain.

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         * The returned PopulatedTransaction must then be passed to the user via Web3 or some other

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         * framework so they can ultimately send the transaction.

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         * Should ALWAYS be called before performing any bridge transactions to ensure they don't fail.

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         * @param {Object} args

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         * @param {Token|string} args.token {@link Token} instance or valid on-chain address of the token the user will be sending

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         * to the bridge on the source chain.

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         * @param {BigNumberish} args.amount Optional, a specific amount of args.token to approve. By default, this function

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         * @param {EthersSigner} signer Valid ethers Signer instance for building a fully and properly populated

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         * transaction.

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*/

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        async executeApproveTransaction(

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            args:       {token: Token | string, amount?: BigNumberish},

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            signer:     EthersSigner,

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        ): Promise<ContractTransaction> {

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            const

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                [approveArgs, tokenAddress] = this.buildERC20ApproveArgs(args),

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                tokenParams = {tokenAddress, chainId: this.chainId};

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            return ERC20.approve(approveArgs, tokenParams, signer)

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14✔

439

        async checkCanBridge(args: CheckCanBridgeParams): Promise<CanBridgeResult> {

14✔

440

            const {token, signer, address} = args;

34✔

441

34✔

442

            let signerAddress: string;

34✔

444

                /* c8 ignore next */

2✔

445

                signerAddress = await signer.getAddress();

2✔

446

            } else if (address && address !== "") {

34✔

447

                signerAddress = address;

34✔

448

34✔

449

34✔

450

            const checkArgs: CanBridgeParams = {...args, address: signerAddress};

34✔

451

            const

34✔

452

                isTerraTx:          boolean = this.isTerra && token.isEqual(Tokens.UST),

34✔

453

                isGasTokenTransfer: boolean = (this.network.chainCurrency === token.symbol) && BridgeUtils.chainSupportsGasToken(this.chainId);

34✔

454

34✔

455

            if (isTerraTx) {

34✔

456

                return this.checkTerraUSTBalance(checkArgs);

6✔

457

6✔

458

34✔

459

            let hasBalanceRes: Promise<CanBridgeResult> = isGasTokenTransfer

34✔

460

                ? this.checkGasTokenBalance(checkArgs)

34✔

461

                : this.checkERC20Balance(checkArgs);

34✔

462

34✔

463

            if (isGasTokenTransfer) {

34✔

464

                return hasBalanceRes

14✔

465

14✔

466

14✔

467

            return this.checkNeedsApprove(checkArgs)

14✔

468

                .then(approveRes => this.resolveApproveFunc(approveRes, hasBalanceRes, token))

14✔

469

                .catch(rejectPromise)

14✔

470

14✔

471

14✔

472

        private async calculateBridgeRate(args: BridgeParams): Promise<BridgeOutputEstimate> {

14✔

473

            let {chainIdTo, amountFrom} = args;

194✔

474

194✔

475

            let toChainZap: GenericZapBridgeContract;

194✔

476

194✔

477

            if (chainIdTo !== ChainId.TERRA) {

194✔

478

                const toChainZapParams = {chainId: chainIdTo, signerOrProvider: rpcProviderForChain(chainIdTo)};

186✔

479

                toChainZap = SynapseEntities.GenericZapBridgeContractInstance(toChainZapParams);

186✔

480

186✔

481

194✔

482

            const {

194✔

483

                tokenFrom, tokenTo,

194✔

484

                tokenIndexFrom, tokenIndexTo,

194✔

485

                fromChainTokens

194✔

486

            } = this.makeBridgeTokenArgs(args);

194✔

487

194✔

488

            let {intermediateToken, bridgeConfigIntermediateToken} = TokenSwap.intermediateTokens(chainIdTo, tokenFrom);

194✔

489

194✔

490

            const involvesUST = [tokenFrom.swapType, tokenTo.swapType].includes(SwapType.UST);

194✔

491

194✔

492

            const

194✔

493

                intermediateTokenAddr = toLower(bridgeConfigIntermediateToken.address(chainIdTo)),

194✔

494

                multiplier            = involvesUST ? TEN.pow(12) : 1,

194✔

495

                amtFrom               = involvesUST ? amountFrom : TEN.pow(18-tokenFrom.decimals(this.chainId));

194✔

496

194✔

497

            const bridgeFeeRequest: Promise<BigNumber> = this.bridgeConfigInstance["calculateSwapFee(string,uint256,uint256)"](

194✔

498

                intermediateTokenAddr,

194✔

499

                chainIdTo,

194✔

500

                amtFrom

194✔

501

);

194✔

502

194✔

503

            const checkEthy = (c1: number, c2: number, t: Token): boolean =>

194✔

504

                c1 === ChainId.ETH && BridgeUtils.isL2ETHChain(c2) && t.swapType === SwapType.ETH

388✔

505

194✔

506

            const

194✔

507

                ethToEth:   boolean = checkEthy(this.chainId, chainIdTo,    tokenTo),

194✔

508

                ethFromEth: boolean = checkEthy(chainIdTo,    this.chainId, tokenFrom);

194✔

509

194✔

510

            let amountToReceive_from_prom: Promise<BigNumber>;

194✔

511

            switch (true) {

194✔

512

                case amountFrom.eq(Zero):

194✔

513

                    amountToReceive_from_prom = Promise.resolve(Zero);

8✔

514

                    break;

8✔

515

                case ethToEth:

194✔

516

                case Tokens.isMintBurnToken(tokenFrom):

194✔

517

                case tokenFrom.isWrappedToken:

194✔

518

                    amountToReceive_from_prom = Promise.resolve(amountFrom);

130✔

519

                    break;

130✔

520

                case this.chainId === ChainId.ETH:

194✔

521

                    let liquidityAmounts = fromChainTokens.map((t) => tokenFrom.isEqual(t) ? amountFrom : Zero);

8✔

522

                    amountToReceive_from_prom = this.zapBridgeInstance.calculateTokenAmount(liquidityAmounts, true);

8✔

523

8✔

524

                    break;

8✔

525

                default:

194✔

526

                    amountToReceive_from_prom = BridgeUtils.calculateSwapL2Zap(

48✔

527

                        this.networkZapBridgeInstance,

48✔

528

                        intermediateToken.address(this.chainId),

48✔

529

                        tokenIndexFrom,

48✔

530

0,

48✔

531

                        amountFrom

48✔

532

);

48✔

533

194✔

534

194✔

535

            let amountToReceive_from = await amountToReceive_from_prom;

194✔

536

194✔

537

            let bridgeFee: BigNumber;

194✔

538

            /* c8 ignore start */

2✔

539

            try {

2✔

540

                bridgeFee = await bridgeFeeRequest;

2✔

541

                if (bridgeFee === null) {

2✔

542

                    console.error("calculateSwapFee returned null");

2✔

543

                    return rejectPromise("calculateSwapFee returned null")

2✔

544

2✔

545

            } catch (e) {

2✔

546

                console.error(`Error in bridge fee request: ${e}`);

2✔

547

                return rejectPromise(e)

2✔

548

2✔

549

            /* c8 ignore stop */

2✔

550

194✔

551

            amountToReceive_from = BridgeUtils.subBigNumSafe(amountToReceive_from, bridgeFee);

194✔

552

194✔

553

            let amountToReceive_to_prom: Promise<BigNumber>;

194✔

554

            switch (true) {

194✔

555

                case amountToReceive_from.isZero():

194✔

556

                    amountToReceive_to_prom = Promise.resolve(Zero);

11✔

557

                    break;

11✔

558

                case ethFromEth:

194✔

559

                case Tokens.isMintBurnToken(tokenTo):

194✔

560

                case tokenTo.isWrappedToken:

194✔

561

                    amountToReceive_to_prom = Promise.resolve(amountToReceive_from);

121✔

562

                    break;

121✔

563

                case chainIdTo === ChainId.ETH:

194✔

564

                    amountToReceive_to_prom = (toChainZap as L1BridgeZapContract)

6✔

565

                        .calculateRemoveLiquidityOneToken(amountToReceive_from, tokenIndexTo);

6✔

566

6✔

567

                    break;

6✔

568

                default:

194✔

569

                    amountToReceive_to_prom = BridgeUtils.calculateSwapL2Zap(

56✔

570

                        toChainZap,

56✔

571

                        intermediateToken.address(chainIdTo),

56✔

572

0,

56✔

573

                        tokenIndexTo,

56✔

574

                        amountToReceive_from

56✔

575

);

56✔

576

194✔

577

194✔

578

            let amountToReceive: BigNumber;

194✔

579

            /* c8 ignore next 6 */

2✔

580

            try {

2✔

581

                amountToReceive = await Promise.resolve(amountToReceive_to_prom)

2✔

582

            } catch (err) {

2✔

583

                return rejectPromise(err)

2✔

584

2✔

585

2✔

586

            return {

194✔

587

                amountToReceive,

194✔

589

194✔

590

194✔

591

14✔

592

        private buildETHMainnetBridgeTxn(

14✔

593

            args:      BridgeTransactionParams,

76✔

594

            tokenArgs: BridgeTokenArgs

76✔

595

        ): Promise<PopulatedTransaction> {

76✔

596

            const

76✔

597

                {addressTo, chainIdTo, amountFrom, amountTo} = args,

76✔

598

                zapBridge = SynapseEntities.L1BridgeZapContractInstance({

76✔

599

                    chainId: this.chainId,

76✔

600

                    signerOrProvider: this.provider

76✔

601

});

76✔

602

76✔

603

let

76✔

604

                easyRedeems:    ID[] = [Tokens.SYN.id,  Tokens.UST.id],

76✔

605

                easyDeposits:   ID[] = [

76✔

606

                    Tokens.HIGH.id, Tokens.DOG.id,  Tokens.FRAX.id,

76✔

607

                    Tokens.GOHM.id, Tokens.NEWO.id,

76✔

608

],

76✔

609

                easyDepositETH: ID[] = [Tokens.NETH.id];

76✔

610

76✔

611

            let {castArgs, isEasy, txn} = this.checkEasyArgs(args, zapBridge, easyDeposits, easyRedeems, easyDepositETH);

76✔

612

            if (isEasy && txn) {

76✔

613

                return txn

32✔

614

32✔

615

76✔

616

            const liquidityAmounts = tokenArgs.fromChainTokens.map(t =>

76✔

617

                    args.tokenFrom.isEqual(t)

88✔

618

                        ? amountFrom

88✔

619

                        : Zero

88✔

620

);

76✔

621

76✔

622

            const {

76✔

623

                transactionDeadline,

76✔

624

                bridgeTransactionDeadline,

76✔

625

                minToSwapDestFromOrigin,

76✔

626

                minToSwapDest,

76✔

627

                minToSwapOriginMediumSlippage,

76✔

628

                minToSwapDestFromOriginMediumSlippage,

76✔

629

            } = BridgeUtils.getSlippages(amountFrom, amountTo);

76✔

630

76✔

631

            if (args.tokenTo.isEqual(Tokens.NUSD)) {

76✔

632

                if (args.tokenFrom.isEqual(Tokens.NUSD)) {

8✔

633

                    const bridgeDepositArgs = BridgeUtils.makeEasyParams(

4✔

634

                        args as BridgeUtils.BridgeTxParams,

4✔

635

                        this.chainId,

4✔

636

                        args.tokenTo

4✔

637

);

4✔

638

4✔

639

                    return zapBridge

4✔

640

                        .populateTransaction

4✔

641

                        .deposit(...bridgeDepositArgs)

4✔

642

                } else {

4✔

643

                    return zapBridge.populateTransaction.zapAndDeposit(

4✔

644

                        addressTo,

4✔

645

                        chainIdTo,

4✔

646

                        Tokens.NUSD.address(this.chainId),

4✔

647

                        liquidityAmounts,

4✔

648

                        minToSwapDest,

4✔

649

                        transactionDeadline,

4✔

650

4✔

651

4✔

652

8✔

653

34✔

654

            if (BridgeUtils.isETHLikeToken(args.tokenTo) || args.tokenTo.isEqual(Tokens.WETH)) {

76✔

655

                return zapBridge.populateTransaction.depositETHAndSwap(

20✔

656

                    ...BridgeUtils.depositETHParams(castArgs),

20✔

657

                    0, // nusd tokenindex,

20✔

658

                    tokenArgs.tokenIndexTo,

20✔

659

                    minToSwapDestFromOrigin, // minDy

20✔

660

                    bridgeTransactionDeadline,

20✔

661

                    BridgeUtils.overrides(amountFrom)

20✔

662

20✔

663

            } else if (args.tokenFrom.isEqual(Tokens.NUSD)) {

40✔

664

                return zapBridge.populateTransaction.depositAndSwap(

6✔

665

                    addressTo,

6✔

666

                    chainIdTo,

6✔

667

                    Tokens.NUSD.address(this.chainId),

6✔

668

                    amountFrom,

6✔

669

0,

6✔

670

                    tokenArgs.tokenIndexTo,

6✔

671

                    minToSwapDestFromOriginMediumSlippage,

6✔

672

                    bridgeTransactionDeadline

6✔

673

6✔

674

6✔

675

72✔

676

            return zapBridge.populateTransaction.zapAndDepositAndSwap(

72✔

677

                addressTo,

72✔

678

                chainIdTo,

72✔

679

                Tokens.NUSD.address(this.chainId),

72✔

680

                liquidityAmounts,

72✔

681

                minToSwapOriginMediumSlippage, // minToSwapOrigin,

72✔

682

                transactionDeadline,

72✔

683

0,

72✔

684

                tokenArgs.tokenIndexTo,

72✔

685

                minToSwapDestFromOriginMediumSlippage, //, minToSwapDestFromOrigin, // minDy

72✔

686

                bridgeTransactionDeadline,

72✔

687

72✔

688

72✔

689

14✔

690

        private buildL2BridgeTxn(

14✔

691

            args: BridgeTransactionParams,

226✔

692

            tokenArgs: BridgeTokenArgs

226✔

693

        ): Promise<PopulatedTransaction> {

226✔

694

            const

226✔

695

                {chainIdTo, amountFrom, amountTo} = args,

226✔

696

                zapBridge = SynapseEntities.L2BridgeZapContractInstance({

226✔

697

                    chainId: this.chainId,

226✔

698

                    signerOrProvider: this.provider

226✔

699

});

226✔

700

226✔

701

            tokenArgs.tokenFrom = tokenArgs.tokenFrom.isEqual(Tokens.AVWETH)

226✔

703

                : tokenArgs.tokenFrom;

226✔

704

226✔

705

let

226✔

706

                easyDeposits:   ID[] = [],

226✔

707

                easyDepositETH: ID[] = [],

226✔

708

                easyRedeems:    ID[] = [

226✔

709

                    Tokens.SYN.id,  Tokens.HIGH.id, Tokens.DOG.id,

226✔

710

                    Tokens.FRAX.id, Tokens.GOHM.id, Tokens.NEWO.id,

226✔

711

];

226✔

712

226✔

713

            BridgeUtils.DepositIfChainTokens.forEach((args) => {

226✔

714

                let {chainId, tokens, depositEth, altChainId} = args;

1,130✔

715

1,130✔

716

let

1,130✔

717

                    hasAltChain = typeof altChainId !== 'undefined',

1,130✔

718

                    tokenHashes = tokens.map((t) => t.id);

1,130✔

719

1,130✔

720

                if (this.chainId === chainId) {

1,130✔

721

                    depositEth

120✔

722

                        ? easyDepositETH.push(...tokenHashes)

120✔

723

                        : easyDeposits.push(...tokenHashes);

120✔

724

                } else {

1,130✔

725

                    if (hasAltChain) {

1,010✔

726

                        if (this.chainId === altChainId) easyRedeems.push(...tokenHashes);

378✔

727

                    } else {

1,010✔

728

                        easyRedeems.push(...tokenHashes);

632✔

729

632✔

730

1,010✔

731

})

226✔

732

226✔

733

            let {castArgs, isEasy, txn} = this.checkEasyArgs(args, zapBridge, easyDeposits, easyRedeems, easyDepositETH);

226✔

734

            if (isEasy && txn) {

226✔

735

                return txn

74✔

736

74✔

737

226✔

738

            const {

226✔

739

                transactionDeadline,

226✔

740

                bridgeTransactionDeadline,

226✔

741

                minToSwapOriginHighSlippage,

226✔

742

                minToSwapDestFromOriginHighSlippage,

226✔

743

                minToSwapDest,

226✔

744

            } = BridgeUtils.getSlippages(amountFrom, amountTo);

226✔

745

226✔

746

            const easyRedeemAndSwap = (baseToken: Token): Promise<PopulatedTransaction> =>

226✔

747

                zapBridge

10✔

748

                    .populateTransaction

10✔

749

                    .redeemAndSwap(

10✔

750

                        ...BridgeUtils.makeEasyParams(castArgs, this.chainId, baseToken),

10✔

751

0,

10✔

752

                        tokenArgs.tokenIndexTo,

10✔

753

                        minToSwapDest,

10✔

754

                        transactionDeadline,

10✔

755

226✔

756

226✔

757

            const easySwapAndRedeem = (baseToken: Token, swapETH: boolean = false): Promise<PopulatedTransaction> => {

226✔

758

                let populateFn = swapETH

18✔

759

                    ? zapBridge.populateTransaction.swapETHAndRedeem

18✔

760

                    : zapBridge.populateTransaction.swapAndRedeem

18✔

761

18✔

762

                return populateFn(

18✔

763

                    ...BridgeUtils.makeEasySubParams(castArgs, this.chainId, baseToken),

18✔

764

                    tokenArgs.tokenIndexFrom,

18✔

765

0,

18✔

766

                    amountFrom,

18✔

767

                    minToSwapOriginHighSlippage, // minToSwapOrigin, // minToSwapOriginHighSlippage,

18✔

768

                    transactionDeadline,

18✔

769

                    swapETH ? BridgeUtils.overrides(amountFrom) : {}

18✔

770

18✔

771

18✔

772

226✔

773

            const easySwapAndRedeemAndSwap = (baseToken: Token, swapETH: boolean = false): Promise<PopulatedTransaction> => {

226✔

774

                let populateFn = swapETH

54✔

775

                    ? zapBridge.populateTransaction.swapETHAndRedeemAndSwap

54✔

776

                    : zapBridge.populateTransaction.swapAndRedeemAndSwap

54✔

777

54✔

778

                return populateFn(

54✔

779

                    ...BridgeUtils.makeEasySubParams(castArgs, this.chainId, baseToken),

54✔

780

                    tokenArgs.tokenIndexFrom,

54✔

781

0,

54✔

782

                    amountFrom,

54✔

783

                    minToSwapOriginHighSlippage,

54✔

784

                    transactionDeadline,

54✔

785

0,

54✔

786

                    tokenArgs.tokenIndexTo,

54✔

787

                    minToSwapDestFromOriginHighSlippage, // swapMinAmount

54✔

788

                    bridgeTransactionDeadline, // toSwapDeadline, // swapDeadline

54✔

789

                    swapETH ? BridgeUtils.overrides(amountFrom) : {}

54✔

790

54✔

791

54✔

792

226✔

793

            switch (tokenSwitch(args.tokenTo)) {

226✔

794

                case Tokens.NUSD:

226✔

795

                    if (args.tokenFrom.isEqual(Tokens.NUSD)) {

28✔

796

                        return zapBridge

8✔

797

                            .populateTransaction

8✔

798

                            .redeem(...BridgeUtils.makeEasyParams(castArgs, this.chainId, Tokens.NUSD))

8✔

799

8✔

800

20✔

801

                    return zapBridge

20✔

802

                        .populateTransaction

20✔

803

                        .swapAndRedeem(

20✔

804

                            ...BridgeUtils.makeEasySubParams(castArgs, this.chainId, Tokens.NUSD),

20✔

805

                            tokenArgs.tokenIndexFrom,

20✔

806

0,

20✔

807

                            amountFrom,

20✔

808

                            minToSwapOriginHighSlippage,

20✔

809

                            transactionDeadline

20✔

810

20✔

811

                case Tokens.GMX:

226✔

812

                    let params = BridgeUtils.makeEasyParams(castArgs, this.chainId, Tokens.GMX);

8✔

813

                    let [addrTo, chainTo,,amount] = params;

8✔

814

8✔

815

                    return this.chainId === ChainId.ARBITRUM

8✔

816

                        ? zapBridge.populateTransaction.deposit(...params)

8✔

817

                        : this.bridgeInstance

8✔

818

                            .populateTransaction

4✔

819

                            .redeem(

4✔

820

                                addrTo,

4✔

821

                                chainTo,

4✔

822

                                Tokens.GMX.wrapperAddress(this.chainId),

4✔

823

                                amount

4✔

824

8✔

825

                default:

226✔

826

                    if (chainIdTo === ChainId.ETH) {

106✔

827

                        if (this.isL2ETHChain && args.tokenFrom.swapType === SwapType.ETH) {

42✔

828

                            if (args.tokenFrom.isEqual(Tokens.NETH)) {

28✔

829

                                return zapBridge

10✔

830

                                    .populateTransaction

10✔

831

                                    .redeem(...BridgeUtils.makeEasyParams(castArgs, this.chainId, Tokens.NETH))

10✔

832

                            } else {

22✔

833

                                let useSwapETH = !BridgeUtils.isETHLikeToken(args.tokenFrom);

18✔

834

                                return easySwapAndRedeem(Tokens.NETH, useSwapETH)

18✔

835

18✔

836

                        } else if (args.tokenFrom.isEqual(Tokens.NUSD)) {

42✔

837

                            return zapBridge

8✔

838

                                .populateTransaction

8✔

839

                                .redeemAndRemove(

8✔

840

                                    ...BridgeUtils.makeEasySubParams(castArgs, this.chainId, Tokens.NUSD),

8✔

841

                                    amountFrom,

8✔

842

                                    tokenArgs.tokenIndexTo,

8✔

843

                                    minToSwapDest,

8✔

844

                                    transactionDeadline

8✔

845

8✔

846

8✔

847

6✔

848

                        return zapBridge

6✔

849

                            .populateTransaction

6✔

850

                            .swapAndRedeemAndRemove(

6✔

851

                                ...BridgeUtils.makeEasySubParams(castArgs, this.chainId, Tokens.NUSD),

6✔

852

                                tokenArgs.tokenIndexFrom,

6✔

853

0,

6✔

854

                                amountFrom,

6✔

855

                                minToSwapOriginHighSlippage,

6✔

856

                                transactionDeadline,

6✔

857

                                tokenArgs.tokenIndexTo, //swapTokenIndex

6✔

858

                                minToSwapDestFromOriginHighSlippage, // swapMinAmount

6✔

859

                                bridgeTransactionDeadline, // toSwapDeadline, // swapDeadline

6✔

860

6✔

861

6✔

862

64✔

863

                    if (args.tokenFrom.isEqual(Tokens.NUSD) || args.tokenFrom.isEqual(Tokens.NETH)) {

106✔

864

                        return easyRedeemAndSwap(args.tokenFrom)

10✔

865

10✔

866

54✔

867

                    if (args.tokenFrom.swapType === SwapType.ETH) {

106✔

868

                        let useSwapETH = !BridgeUtils.isETHLikeToken(args.tokenFrom);

42✔

869

                        return easySwapAndRedeemAndSwap(Tokens.NETH, useSwapETH)

42✔

870

42✔

871

12✔

872

                    return easySwapAndRedeemAndSwap(Tokens.NUSD)

12✔

873

226✔

874

226✔

875

14✔

876

        private buildTerraBridgeTxn({

14✔

877

            addressTo,

8✔

878

            chainIdTo,

8✔

879

            amountFrom

8✔

880

        }: BridgeTransactionParams): Promise<MsgExecuteContract> {

8✔

881

            return Promise.resolve(new MsgExecuteContract(

8✔

882

                null,

8✔

883

                this.bridgeAddress,

8✔

884

8✔

885

                    deposit: {

8✔

886

                        to_address: toLower(addressTo),

8✔

887

                        chain_id:  `${chainIdTo}`,

8✔

888

                        denom:     "uusd"

8✔

889

8✔

890

},

8✔

891

                { uusd: amountFrom.toNumber() }

8✔

892

))

8✔

893

8✔

894

14✔

895

        private makeBridgeTokenArgs(args: BridgeParams): BridgeTokenArgs {

14✔

896

            let {tokenFrom, tokenTo, chainIdTo} = args;

548✔

897

548✔

898

            let bridgeTokens: (t1: Token, t2: Token) => [Token, Token];

548✔

899

548✔

900

            switch (tokenFrom.swapType) {

548✔

901

                case SwapType.ETH:

548✔

902

                    bridgeTokens = BridgeUtils.checkReplaceTokens(Tokens.ETH, Tokens.WETH);

174✔

903

                    break;

174✔

904

                case SwapType.AVAX:

548✔

905

                    bridgeTokens = BridgeUtils.checkReplaceTokens(Tokens.AVAX, Tokens.WAVAX);

12✔

906

                    break;

12✔

907

                case SwapType.MOVR:

548✔

908

                    bridgeTokens = BridgeUtils.checkReplaceTokens(Tokens.MOVR, Tokens.WMOVR);

12✔

909

                    break;

12✔

910

                default:

548✔

911

                    bridgeTokens = (t1: Token, t2: Token) => [t1, t2];

350✔

912

548✔

913

548✔

914

            [tokenFrom, tokenTo] = bridgeTokens(tokenFrom, tokenTo);

548✔

915

548✔

916

            const

548✔

917

                [fromChainTokens, tokenIndexFrom] = BridgeUtils.makeTokenArgs(this.chainId, tokenFrom),

548✔

918

                [toChainTokens,   tokenIndexTo]   = BridgeUtils.makeTokenArgs(chainIdTo,    tokenTo);

548✔

919

548✔

920

            return {

548✔

921

                fromChainTokens,

548✔

922

                toChainTokens,

548✔

923

                tokenFrom,

548✔

924

                tokenTo,

548✔

925

                tokenIndexFrom,

548✔

926

                tokenIndexTo

548✔

927

548✔

928

548✔

929

14✔

930

        private checkEasyArgs(

14✔

931

            args:            BridgeTransactionParams,

302✔

932

            zapBridge:       GenericZapBridgeContract,

302✔

933

            easyDeposits:    ID[],

302✔

934

            easyRedeems:     ID[],

302✔

935

            easyDepositETH?: ID[],

302✔

936

        ): EasyArgsCheck {

302✔

937

let

302✔

938

                castArgs = args as BridgeUtils.BridgeTxParams,

302✔

939

                isEasy: boolean = false,

302✔

940

                txn:    Promise<PopulatedTransaction>;

302✔

941

302✔

942

            const params = BridgeUtils.makeEasyParams(castArgs, this.chainId, args.tokenTo);

302✔

943

302✔

944

            switch (true) {

302✔

945

                case easyRedeems.includes(args.tokenTo.id):

302✔

946

                    isEasy = true;

58✔

947

                    txn    = zapBridge.populateTransaction.redeem(...params);

58✔

948

                    break;

58✔

949

                case easyDeposits.includes(args.tokenTo.id):

302✔

950

                    isEasy = true;

30✔

951

                    txn    = zapBridge.populateTransaction.deposit(...params);

30✔

952

                    break;

30✔

953

                case easyDepositETH.includes(args.tokenTo.id):

302✔

954

                    isEasy = true;

18✔

955

                    txn    =  zapBridge

18✔

956

                        .populateTransaction

18✔

957

                        .depositETH(

18✔

958

                            ...BridgeUtils.depositETHParams(castArgs),

18✔

959

                            BridgeUtils.overrides(args.amountFrom)

18✔

960

);

18✔

961

                    break;

18✔

962

302✔

963

302✔

964

            return {castArgs, isEasy, txn}

302✔

965

302✔

966

14✔

967

        private async checkSwapSupported(args: BridgeParams): Promise<boolean> {

14✔

968

            return new Promise<boolean>((resolve, reject) => {

230✔

969

                let [swapSupported, errReason] = this.swapSupported(args);

230✔

970

                if (!swapSupported) {

230✔

971

                    reject(errReason);

26✔

972

                    return

26✔

973

26✔

974

230✔

975

                resolve(true);

230✔

976

})

230✔

977

230✔

978

14✔

979

        private buildERC20ApproveArgs(args: {

14✔

980

            token:   Token | string,

190✔

981

            amount?: BigNumberish

190✔

982

        }): [ERC20.ApproveArgs, string] {

190✔

983

            const {token, amount} = args;

190✔

984

190✔

985

            let tokenAddr: string = instanceOfToken(token)

190✔

986

                ? token.address(this.chainId)

190✔

988

190✔

989

            let spender: string;

190✔

990

            if (tokenAddr === Tokens.UST.address(this.chainId)) {

190✔

991

                spender = this.bridgeAddress;

22✔

992

            } else {

190✔

993

                spender = this.zapBridgeAddress;

168✔

994

168✔

995

190✔

996

            return [{

190✔

997

                spender,

190✔

998

                amount

190✔

999

            }, tokenAddr]

190✔

1000

190✔

1001

14✔

1002

        async getAllowanceForAddress(args: {

14✔

1003

            address: string,

10✔

1004

            token:   Token,

10✔

1005

        }): Promise<BigNumber> {

10✔

1006

            let { address, token } = args;

10✔

1007

            let tokenAddress = token.address(this.chainId);

10✔

1008

10✔

1009

            return ERC20.allowanceOf(address, this.zapBridgeAddress, {tokenAddress, chainId: this.chainId})

10✔

1010

10✔

1011

14✔

1012

        private async resolveApproveFunc(

14✔

1013

            approveRes:    NeedsTokenApproveResult,

14✔

1014

            hasBalanceRes: Promise<CanBridgeResult>,

14✔

1015

            token:         Token

14✔

1016

        ): Promise<CanBridgeResult> {

14✔

1017

            const {needsApproval, currentAllowance} = approveRes;

14✔

1018

            const errStr: string = `Spend allowance of Bridge too low for token ${token.symbol}`;

14✔

1019

14✔

1020

            return needsApproval

14✔

1022

                : hasBalanceRes

14✔

1023

14✔

1024

14✔

1025

        private async checkNeedsApprove({

14✔

1026

            address,

14✔

1027

            token,

14✔

1028

            amount=MAX_APPROVAL_AMOUNT.sub(1)

14✔

1029

        }: CheckCanBridgeParams): Promise<NeedsTokenApproveResult> {

14✔

1030

            const [{spender}, tokenAddress] = this.buildERC20ApproveArgs({token, amount});

14✔

1031

14✔

1032

            return ERC20.allowanceOf(address, spender, {tokenAddress, chainId: this.chainId})

14✔

1033

                .then(currentAllowance => ({needsApproval: currentAllowance.lt(amount), currentAllowance}))

14✔

1034

14✔

1035

14✔

1036

        private async checkGasTokenBalance(args: CanBridgeParams): Promise<CanBridgeResult> {

14✔

1037

            const {signer, address, amount, token} = args;

14✔

1038

14✔

1039

            let balanceFn: () => Promise<BigNumber>;

14✔

1041

                /* c8 ignore next */

2✔

1042

                balanceFn = signer.getBalance;

2✔

1043

            } else if (address) {

14✔

1044

                balanceFn = () => this.provider.getBalance(address);

14✔

1045

14✔

1046

14✔

1047

            return this.resolveBalanceFunc(

14✔

1048

                balanceFn(),

14✔

1049

                amount,

14✔

1050

                token

14✔

1051

14✔

1052

14✔

1053

14✔

1054

        private async checkERC20Balance(args: CheckCanBridgeParams): Promise<CanBridgeResult> {

14✔

1055

            const

14✔

1056

                {address, amount, token} = args,

14✔

1057

                tokenAddress = token.address(this.chainId);

14✔

1058

14✔

1059

            return this.resolveBalanceFunc(

14✔

1060

                ERC20.balanceOf(address, {tokenAddress, chainId: this.chainId}),

14✔

1061

                amount,

14✔

1062

                token

14✔

1063

14✔

1064

14✔

1065

14✔

1066

        private async checkTerraUSTBalance({address, token, amount}: CanBridgeParams): Promise<CanBridgeResult> {

14✔

1067

            const balProm: Promise<BigNumber> = this.terraProvider.bank.balance(address)

6✔

1068

                .then(([res]) => {

6✔

1069

                    let coin = res.get("uusd");

6✔

1070

6✔

1071

                    let ustBalance: BigNumber = Zero;

6✔

1072

6✔

1073

                    if (coin) {

6✔

1074

                        const {amount} = coin.toData();

6✔

1075

                        if (amount && (amount !== "")) {

6✔

1076

                            ustBalance = BigNumber.from(amount);

6✔

1077

6✔

1078

6✔

1079

6✔

1080

                    return ustBalance

6✔

1081

})

6✔

1082

6✔

1083

            return this.resolveBalanceFunc(

6✔

1084

                balProm,

6✔

1085

                amount,

6✔

1086

                token

6✔

1087

6✔

1088

6✔

1089

14✔

1090

        private async resolveBalanceFunc(

14✔

1091

            prom:   Promise<BigNumber>,

34✔

1092

            amount: BigNumberish,

34✔

1093

            token:  Token

34✔

1094

        ): Promise<CanBridgeResult> {

34✔

1095

            return Promise.resolve(prom)

34✔

1096

                .then(balance => {

34✔

1097

                    const errMsg: string = `Balance of token ${token.symbol} is too low`;

34✔

1098

34✔

1099

                    if (balance.gte(amount)) {

34✔

1100

                        return {canBridge: true}

4✔

1101

4✔

1102

34✔

1103

                    return {canBridge: false, reasonUnable: errMsg, amount: balance}

34✔

1104

})

34✔

1105

                .catch(rejectPromise)

34✔

1106

34✔

1107

14✔

1108

14✔

1109

    const REQUIRED_CONFS: NumberMap = {

14✔

1110

        [ChainId.ETH]:       7,

14✔

1111

        [ChainId.OPTIMISM]:  1,

14✔

1112

        [ChainId.CRONOS]:    6,

14✔

1113

        [ChainId.BSC]:       14,

14✔

1114

        [ChainId.POLYGON]:   128,

14✔

1115

        [ChainId.FANTOM]:    5,

14✔

1116

        [ChainId.BOBA]:      1,

14✔

1117

        [ChainId.METIS]:     6,

14✔

1118

        [ChainId.MOONBEAM]:  21,

14✔

1119

        [ChainId.MOONRIVER]: 21,

14✔

1120

        [ChainId.ARBITRUM]:  40,

14✔

1121

        [ChainId.AVALANCHE]: 5,

14✔

1122

        [ChainId.TERRA]:     1,

14✔

1123

        [ChainId.AURORA]:    5,

14✔

1124

        [ChainId.HARMONY]:   1,

14✔

1125

};

14✔

1126

14✔

1127

    export function getRequiredConfirmationsForBridge(network: Networks.Network | number): number {

14✔

1129

924✔

1131

924✔

1132

14✔

1133

    /* c8 ignore next */

2✔

1134

    export function bridgeSwapSupported(args: TokenSwap.BridgeSwapSupportedParams): TokenSwap.SwapSupportedResult {

2✔

1135

        return TokenSwap.bridgeSwapSupported(args)

372✔

1136

372✔

1137

14✔

synapsecns / sdk / 2003345596

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synapsecns / sdk / 2003345596

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