"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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};
var __generator = (this && this.__generator) || function (thisArg, body) {
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Object.defineProperty(exports, "__esModule", { value: true });
exports.EthereumAddressResolver = void 0;
var ethereumAddress_1 = require("./ethereumAddress");
var EthereumAddressResolver = /** @class */ (function () {
    function EthereumAddressResolver(httpClient) {
        this._httpClient = httpClient;
    }
    /* Resolve a string ID to an Ethereum address.
     * The string must be either an Ethereum address or a did:web identifier
     * that can be resolved to an Ethereum address.
     */
    EthereumAddressResolver.prototype.resolve = function (addr) {
        return __awaiter(this, void 0, void 0, function () {
            var didDocumentUri, body, didDocument, e_1;
            return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0:
                        if (/^0x[a-fA-F0-9]{40}$/.test(addr)) {
                            return [2 /*return*/, ethereumAddress_1.EthereumAddress.parse(addr)];
                        }
                        if (!/^did\:web\:.+$/.test(addr)) return [3 /*break*/, 4];
                        didDocumentUri = this._didToUrl(addr);
                        _a.label = 1;
                    case 1:
                        _a.trys.push([1, 3, , 4]);
                        return [4 /*yield*/, this._httpClient.fetch(didDocumentUri)];
                    case 2:
                        body = _a.sent();
                        didDocument = JSON.parse(body);
                        if (didDocument["@context"] !== "https://w3id.org/did/v1" ||
                            didDocument.id !== addr ||
                            typeof didDocument.publicKey === "undefined" ||
                            didDocument.publicKey[0].type !== "Secp256k1VerificationKey2018" ||
                            didDocument.publicKey[0].owner !== addr ||
                            !/^0x[a-fA-F0-9]{40}$/.test(didDocument.publicKey[0].ethereumAddress)) {
                            // DID document is invalid or unsupported
                            return [2 /*return*/, null];
                        }
                        return [2 /*return*/, ethereumAddress_1.EthereumAddress.parse(didDocument.publicKey[0].ethereumAddress)];
                    case 3:
                        e_1 = _a.sent();
                        // DID document could not be fetched
                        return [2 /*return*/, null];
                    case 4: return [2 /*return*/];
                }
            });
        });
    };
    /**
     * Did to url. Translate a did:web identifier to the URL at which the corresponding DID document can be found
     * according to spec at https://w3c-ccg.github.io/did-method-web/#crud-operation-definitions.
     * @param did a valid did:web ID string
     * @returns an https URL string representing the location of the corresponding DID document
     */
    EthereumAddressResolver.prototype._didToUrl = function (did) {
        var parts = did.split(":");
        if (parts.length === 3) {
            // did:web:<x>
            var hostname = decodeURIComponent(parts[2]);
            return "https://" + hostname + "/.well-known/did.json";
        }
        else {
            // did:web:<a>:<b>:...:<z>
            var hostname = decodeURIComponent(parts[2]);
            var path = parts.slice(3).join("/");
            return "https://" + hostname + "/" + path + "/did.json";
        }
    };
    return EthereumAddressResolver;
}());
exports.EthereumAddressResolver = EthereumAddressResolver;
