"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
var __generator = (this && this.__generator) || function (thisArg, body) {
    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
    return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
    function verb(n) { return function (v) { return step([n, v]); }; }
    function step(op) {
        if (f) throw new TypeError("Generator is already executing.");
        while (_) try {
            if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
            if (y = 0, t) op = [op[0] & 2, t.value];
            switch (op[0]) {
                case 0: case 1: t = op; break;
                case 4: _.label++; return { value: op[1], done: false };
                case 5: _.label++; y = op[1]; op = [0]; continue;
                case 7: op = _.ops.pop(); _.trys.pop(); continue;
                default:
                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
                    if (t[2]) _.ops.pop();
                    _.trys.pop(); continue;
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            op = body.call(thisArg, _);
        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
    }
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.signData = exports.signChallengeMessage = exports.signStates = exports.sign = exports.signState = exports.getStateSignerAddress = void 0;
var ethers_1 = require("ethers");
var challenge_1 = require("./contract/challenge");
var channel_1 = require("./contract/channel");
var state_1 = require("./contract/state");
function getStateSignerAddress(signedState) {
    var stateHash = state_1.hashState(signedState.state);
    var recoveredAddress = ethers_1.utils.verifyMessage(ethers_1.utils.arrayify(stateHash), signedState.signature);
    var channel = signedState.state.channel;
    var participants = channel.participants;
    if (participants.indexOf(recoveredAddress) < 0) {
        throw new Error("Recovered address " + recoveredAddress + " is not a participant in channel " + channel_1.getChannelId(channel));
    }
    return recoveredAddress;
}
exports.getStateSignerAddress = getStateSignerAddress;
function signState(state, privateKey) {
    var wallet = new ethers_1.Wallet(privateKey);
    if (state.channel.participants.indexOf(wallet.address) < 0) {
        throw new Error("The state must be signed with a participant's private key");
    }
    var hashedState = state_1.hashState(state);
    var signature = signData(hashedState, privateKey);
    return { state: state, signature: signature };
}
exports.signState = signState;
function sign(wallet, msgHash) {
    return __awaiter(this, void 0, void 0, function () {
        var _a, _b;
        return __generator(this, function (_c) {
            switch (_c.label) {
                case 0:
                    _b = (_a = ethers_1.utils).splitSignature;
                    return [4, wallet.signMessage(ethers_1.utils.arrayify(msgHash))];
                case 1: return [2, _b.apply(_a, [_c.sent()])];
            }
        });
    });
}
exports.sign = sign;
function signStates(states, wallets, whoSignedWhat) {
    return __awaiter(this, void 0, void 0, function () {
        var stateHashes, promises;
        var _this = this;
        return __generator(this, function (_a) {
            stateHashes = states.map(function (s) { return state_1.hashState(s); });
            promises = wallets.map(function (w, i) { return __awaiter(_this, void 0, void 0, function () { return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0: return [4, sign(w, stateHashes[whoSignedWhat[i]])];
                    case 1: return [2, _a.sent()];
                }
            }); }); });
            return [2, Promise.all(promises)];
        });
    });
}
exports.signStates = signStates;
function signChallengeMessage(signedStates, privateKey) {
    if (signedStates.length === 0) {
        throw new Error('At least one signed state must be provided');
    }
    var wallet = new ethers_1.Wallet(privateKey);
    if (signedStates[0].state.channel.participants.indexOf(wallet.address) < 0) {
        throw new Error("The state must be signed with a participant's private key");
    }
    var challengeState = signedStates[signedStates.length - 1].state;
    var challengeHash = challenge_1.hashChallengeMessage(challengeState);
    return signData(challengeHash, privateKey);
}
exports.signChallengeMessage = signChallengeMessage;
function hashMessage(hashedData) {
    return ethers_1.utils.hashMessage(ethers_1.utils.arrayify(hashedData));
}
function signData(hashedData, privateKey) {
    var signingKey = new ethers_1.utils.SigningKey(privateKey);
    return ethers_1.utils.splitSignature(signingKey.signDigest(hashMessage(hashedData)));
}
exports.signData = signData;
//# sourceMappingURL=signatures.js.map