import { Buffer } from 'buffer';
import { Subject } from 'rxjs';
import { createDebugger } from '@iotize/common/debug';
import { bufferToHexString } from '@iotize/common/byte-converter';
import { CodeError } from '@iotize/common/error';

var prefix = '@iotize/tap/relay';
var debug = createDebugger(prefix);

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;
            }
            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 };
    }
};
var TAG = 'Relay';
var RelayServer = /** @class */ (function () {
    function RelayServer(_server, params) {
        this._server = _server;
        this._params = params || {
            port: 2000
        };
        this._clients = [];
    }
    Object.defineProperty(RelayServer.prototype, "server", {
        get: function () {
            return this._server;
        },
        enumerable: true,
        configurable: true
    });
    RelayServer.prototype.addClient = function (socket) {
        this._clients.push(socket);
        return this;
    };
    RelayServer.prototype.removeClient = function (client) {
        var index = this._clients.indexOf(client);
        if (index >= 0) {
            client.close();
            debug(TAG, "Removing client " + client.getClientName() + "...");
            delete this._clients[index];
        }
        return this;
    };
    RelayServer.prototype.start = function () {
        var _this = this;
        this._subscription = new Subject();
        this._server
            .connections()
            .subscribe(function (socket) { return __awaiter(_this, void 0, void 0, function () {
            var clientName;
            var _this = this;
            return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0:
                        clientName = socket.getClientName();
                        debug(TAG, "[NEW_CLIENT] " + clientName);
                        return [4 /*yield*/, socket.ready()];
                    case 1:
                        _a.sent();
                        debug(TAG, "[NEW_CLIENT] " + clientName + " IS READY");
                        // Put this new client in the list
                        this.addClient(socket);
                        socket.events().subscribe({
                            next: function (event) {
                                switch (event.type) {
                                    case 'data':
                                        var messageString = _this.messageToLog(event.payload);
                                        debug(TAG, "[MESSAGE] " + messageString + " from " + clientName);
                                        _this.broadcastMessage(event.payload, socket);
                                        break;
                                    case 'error':
                                        debug(TAG, "[ERROR] " + clientName + " ", event.payload);
                                        // Do we have to remove client every time ?
                                        _this.removeClient(socket);
                                        break;
                                    case 'end':
                                        debug(TAG, "[CLIENTEND] " + clientName);
                                        _this.removeClient(socket);
                                        break;
                                }
                            }
                        });
                        return [2 /*return*/];
                }
            });
        }); });
        return this._server.listen(this._params);
    };
    RelayServer.prototype.stop = function () {
        return __awaiter(this, void 0, void 0, function () {
            return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0:
                        this._clients.forEach(function (client) {
                            client.close();
                        });
                        if (!this._server) return [3 /*break*/, 2];
                        return [4 /*yield*/, this._server.stop()];
                    case 1:
                        _a.sent();
                        _a.label = 2;
                    case 2:
                        if (this._subscription) {
                            this._subscription.complete();
                        }
                        return [2 /*return*/];
                }
            });
        });
    };
    RelayServer.prototype.broadcastMessage = function (message, sender) {
        var messageString = this.messageToLog(message);
        debug(TAG, "[BROADCAST] " + messageString + " from " + sender.getClientName());
        if (this._clients.length == 0) {
            debug(TAG, 'There is no client yet');
            return;
        }
        // Send a message to all clients
        this._clients.forEach(function (client) {
            // Don't want to send it to sender
            try {
                if (client === sender) {
                    debug(TAG, "\t- Skip sender " + client.getClientName());
                    return;
                }
                if (client.isWritable()) {
                    debug(TAG, "\t- Sent to " + client.getClientName());
                    client.write(message);
                }
                else {
                    debug(TAG, "Client " + client.getClientName() + " is not writable. Cannot send to it");
                }
            }
            catch (err) {
                debug("Cannot broadcast to " + client.getClientName(), err);
            }
        });
    };
    RelayServer.prototype.messageToLog = function (message) {
        if (typeof message === 'string') {
            return "\"" + message + "\"";
        }
        else if (message instanceof Buffer) {
            return bufferToHexString(message);
        }
        else {
            return message;
        }
    };
    return RelayServer;
}());

var __extends = (this && this.__extends) || (function () {
    var extendStatics = function (d, b) {
        extendStatics = Object.setPrototypeOf ||
            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
        return extendStatics(d, b);
    };
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
var __awaiter$1 = (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$1 = (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;
            }
            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 };
    }
};
var TAG$1 = 'Relay';
var ComRelayError = /** @class */ (function (_super) {
    __extends(ComRelayError, _super);
    function ComRelayError(code, msg) {
        return _super.call(this, msg, code) || this;
    }
    ComRelayError.illegalArgument = function (message) {
        return new ComRelayError(ComRelayError.Code.IllegalArgmentError, message);
    };
    return ComRelayError;
}(CodeError));
(function (ComRelayError) {
    var Code;
    (function (Code) {
        Code["IllegalArgmentError"] = "IllegalArgmentError";
    })(Code = ComRelayError.Code || (ComRelayError.Code = {}));
})(ComRelayError || (ComRelayError = {}));
/**
 * This is an experimental feature.
 *
 * @experimental
 */
var ComRelay = /** @class */ (function () {
    // private IRelayCallback mCallback;
    // public final RelayServiceInfoModel mRelayInfo;
    // private DefaultSocketServer mSocketServer;
    // private WebSocketServer mWebSocketServer;
    /**
     * @param sourceProtocol protocol that will received commands
     * @param targetProtocol protocol on wich commmand will be sent
     */
    function ComRelay(sourceProtocol, targetProtocol) {
        if (sourceProtocol) {
            this.setSourceProtocol(sourceProtocol);
        }
        if (targetProtocol) {
            this.setTargetProtocol(targetProtocol);
        }
    }
    Object.defineProperty(ComRelay.prototype, "sourceProtocol", {
        get: function () {
            if (!this.mSourceProtocol) {
                throw ComRelayError.illegalArgument('Missing source protocol');
            }
            return this.mSourceProtocol;
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(ComRelay.prototype, "targetProtocol", {
        get: function () {
            if (!this.mTargetProtocol) {
                throw ComRelayError.illegalArgument('Missing target protocol');
            }
            return this.mTargetProtocol;
        },
        enumerable: true,
        configurable: true
    });
    ComRelay.prototype.setSourceProtocol = function (protocol) {
        if (this.mSourceProtocol) {
            this.removeSourceProtocol();
        }
        this.mSourceProtocol = protocol;
        return this;
    };
    ComRelay.prototype.removeSourceProtocol = function () {
        if (this._sourceProtocolSubscription) {
            this._sourceProtocolSubscription.unsubscribe();
            this._sourceProtocolSubscription = undefined;
        }
        this.mSourceProtocol = undefined;
        return this;
    };
    ComRelay.prototype.setTargetProtocol = function (protocol) {
        this.mTargetProtocol = protocol;
        return this;
    };
    ComRelay.prototype.start = function (options) {
        return __awaiter$1(this, void 0, void 0, function () {
            var _this = this;
            return __generator$1(this, function (_a) {
                return [2 /*return*/, promiseTimout(options ? options.timeout || -1 : -1, function (resolve, reject) { return __awaiter$1(_this, void 0, void 0, function () {
                        var ex_1;
                        return __generator$1(this, function (_a) {
                            switch (_a.label) {
                                case 0:
                                    _a.trys.push([0, 5, , 6]);
                                    if (!!this.sourceProtocol.isConnected()) return [3 /*break*/, 2];
                                    debug(TAG$1, 'Connecting to source protocol...');
                                    return [4 /*yield*/, this.sourceProtocol.connect().toPromise()];
                                case 1:
                                    _a.sent();
                                    _a.label = 2;
                                case 2:
                                    if (!!this.targetProtocol.isConnected()) return [3 /*break*/, 4];
                                    debug(TAG$1, 'Connecting to target protocol...');
                                    return [4 /*yield*/, this.targetProtocol.connect().toPromise()];
                                case 3:
                                    _a.sent();
                                    _a.label = 4;
                                case 4:
                                    debug(TAG$1, 'Source/Target are now connected. Listening to messages...');
                                    // We need to reconnect
                                    this.listenToDataStream();
                                    resolve();
                                    return [3 /*break*/, 6];
                                case 5:
                                    ex_1 = _a.sent();
                                    reject(ex_1);
                                    return [3 /*break*/, 6];
                                case 6: return [2 /*return*/];
                            }
                        });
                    }); })];
            });
        });
    };
    ComRelay.prototype.stop = function () {
        var _a, _b, _c, _d;
        if ((_a = this.mTargetProtocol) === null || _a === void 0 ? void 0 : _a.isConnected()) {
            (_b = this.mTargetProtocol) === null || _b === void 0 ? void 0 : _b.disconnect();
        }
        if ((_c = this.mSourceProtocol) === null || _c === void 0 ? void 0 : _c.isConnected()) {
            (_d = this.mSourceProtocol) === null || _d === void 0 ? void 0 : _d.disconnect();
        }
    };
    ComRelay.prototype.listenToDataStream = function () {
        var _this = this;
        // if (!this.mSourceProtocol!.isConnected()){
        //     await this.mSourceProtocol!.connect();
        // }
        return new Promise(function (resolve, reject) {
            if (!_this.mSourceProtocol) {
                return reject(ComRelayError.illegalArgument("Missing source protocol"));
            }
            _this._sourceProtocolSubscription = _this
                .mSourceProtocol
                .receiveStream()
                .subscribe({
                next: function (data) {
                    if (!data) {
                        debug(TAG$1, 'Received null event...');
                        return;
                    }
                    if (!_this.mTargetProtocol) {
                        debug(TAG$1, 'Target protocol is null. Cannot redirect message to it');
                        return;
                    }
                    try {
                        debug(TAG$1, "Received new message", bufferToHexString(data));
                        _this.mTargetProtocol
                            .send(data)
                            .toPromise()
                            .then(function (response) {
                            debug(TAG$1, "Target protocol responded with: ", bufferToHexString(response));
                            return _this.sourceProtocol.write(response);
                        })
                            .then(function () {
                            debug(TAG$1, "Successfully sent response!");
                        })
                            .catch(function (err) {
                            debug(TAG$1, "Cannot transfer response to source protocol: " + err + " JSON=" + JSON.stringify(err), err);
                        });
                    }
                    catch (err) {
                        debug(TAG$1, "Source cannot transfer data to target due to error: " + err, err);
                    }
                },
                error: function (err) {
                    debug(TAG$1, "Error occured " + err);
                },
                complete: function () {
                    resolve();
                }
            });
        });
    };
    ComRelay.prototype.onStop = function () {
        // TODO cleanup
        return this;
    };
    return ComRelay;
}());
function promiseTimout(ms, callback) {
    return new Promise(function (resolve, reject) {
        debug(TAG$1, "promiseTimout start with " + ms + " milliseconds");
        // Set up the real work
        callback(resolve, reject);
        // Set up the timeout
        if (ms >= 0) {
            setTimeout(function () {
                reject('Promise timed out after ' + ms + ' ms');
            }, ms);
        }
    });
}

/**
 * Generated bundle index. Do not edit.
 */

export { ComRelay, ComRelayError, RelayServer };
//# sourceMappingURL=iotize-tap-relay-impl.js.map
