sofya.transcription/dist/services/transcription/SofyaTranscriber.js

a JavaScript library that provides a robust and flexible solution for real-time audio transcription. It is designed to transcribe audio streams and can be easily integrated into web applications.

"use strict";
var __extends = (this && this.__extends) || (function () {
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    return function (d, b) {
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        function __() { this.constructor = d; }
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})();
var __assign = (this && this.__assign) || function () {
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};
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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        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) {
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var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.SofyaTranscriber = void 0;
var TranscriptionServiceFactory_1 = require("./TranscriptionServiceFactory");
var api_1 = require("../../api/api");
var EventEmitter_1 = __importDefault(require("../../shared/EventEmitter"));
var SofyaTranscriber = /** @class */ (function (_super) {
    __extends(SofyaTranscriber, _super);
    function SofyaTranscriber(connection) {
        var _this = _super.call(this) || this;
        _this.transcriptionService = null;
        _this.initializeTranscriptionService(connection);
        return _this;
    }
    SofyaTranscriber.prototype.startTranscription = function (mediaStream) {
        if (!this.transcriptionService) {
            throw new Error("Transcription Service Not Ready. Try again.");
        }
        this.transcriptionService.startTranscription(mediaStream);
    };
    SofyaTranscriber.prototype.stopTranscription = function () {
        return __awaiter(this, void 0, void 0, function () {
            return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0:
                        if (!this.transcriptionService) {
                            throw new Error("Transcription Service Not Ready. Try again.");
                        }
                        return [4 /*yield*/, this.transcriptionService.stopTranscription()];
                    case 1:
                        _a.sent();
                        return [2 /*return*/];
                }
            });
        });
    };
    SofyaTranscriber.prototype.pauseTranscription = function () {
        if (!this.transcriptionService) {
            throw new Error("Transcription Service Not Ready. Try again.");
        }
        this.transcriptionService.pauseTranscription();
    };
    SofyaTranscriber.prototype.resumeTranscription = function () {
        if (!this.transcriptionService) {
            throw new Error("Transcription Service Not Ready. Try again.");
        }
        this.transcriptionService.resumeTranscription();
    };
    SofyaTranscriber.prototype.initializeTranscriptionService = function (connection) {
        return __awaiter(this, void 0, void 0, function () {
            var endpointConfig, _a, endpointError_1;
            return __generator(this, function (_b) {
                switch (_b.label) {
                    case 0:
                        if (!("apiKey" in connection)) return [3 /*break*/, 2];
                        return [4 /*yield*/, this.getProvider(connection.apiKey, connection.config)];
                    case 1:
                        _b.sent();
                        _b.label = 2;
                    case 2:
                        if (!("endpoint" in connection)) return [3 /*break*/, 6];
                        _b.label = 3;
                    case 3:
                        _b.trys.push([3, 5, , 6]);
                        endpointConfig = __assign(__assign({}, connection.config), { endpoint: { endpoint: connection.endpoint } });
                        _a = this;
                        return [4 /*yield*/, TranscriptionServiceFactory_1.TranscriptionServiceFactory.create(connection.provider, endpointConfig)];
                    case 4:
                        _a.transcriptionService = _b.sent();
                        this.addTranscriptionListeners();
                        this.emit("ready");
                        return [2 /*return*/];
                    case 5:
                        endpointError_1 = _b.sent();
                        console.warn("Failed to connect to endpoint: ", endpointError_1);
                        return [3 /*break*/, 6];
                    case 6: return [2 /*return*/];
                }
            });
        });
    };
    SofyaTranscriber.prototype.getProvider = function (apiKey, config) {
        return __awaiter(this, void 0, void 0, function () {
            var providersInfo, providers, _i, providers_1, providerInfo, provider, additional_info, connected, _a, _b, endpoint, endpointConfig, _c, endpointError_2, providerConfig, _d, providerError_1, error_1;
            return __generator(this, function (_e) {
                switch (_e.label) {
                    case 0:
                        _e.trys.push([0, 14, , 15]);
                        return [4 /*yield*/, this.authenticate(apiKey)];
                    case 1:
                        providersInfo = _e.sent();
                        providers = providersInfo.providers;
                        _i = 0, providers_1 = providers;
                        _e.label = 2;
                    case 2:
                        if (!(_i < providers_1.length)) return [3 /*break*/, 13];
                        providerInfo = providers_1[_i];
                        provider = providerInfo.provider, additional_info = providerInfo.additional_info;
                        if (!(additional_info.endpoints && additional_info.endpoints.length > 0)) return [3 /*break*/, 9];
                        connected = false;
                        _a = 0, _b = additional_info.endpoints;
                        _e.label = 3;
                    case 3:
                        if (!(_a < _b.length)) return [3 /*break*/, 8];
                        endpoint = _b[_a];
                        _e.label = 4;
                    case 4:
                        _e.trys.push([4, 6, , 7]);
                        endpointConfig = __assign(__assign(__assign({}, config), additional_info), { endpoint: endpoint });
                        _c = this;
                        return [4 /*yield*/, TranscriptionServiceFactory_1.TranscriptionServiceFactory.create(provider, endpointConfig)];
                    case 5:
                        _c.transcriptionService =
                            _e.sent();
                        this.addTranscriptionListeners();
                        connected = true;
                        this.emit("ready");
                        return [2 /*return*/];
                    case 6:
                        endpointError_2 = _e.sent();
                        console.warn("Failed to connect to endpoint: ", endpointError_2);
                        return [3 /*break*/, 7];
                    case 7:
                        _a++;
                        return [3 /*break*/, 3];
                    case 8:
                        // If no endpoints succeed, move to the next provider
                        if (!connected) {
                            return [3 /*break*/, 12];
                        }
                        return [3 /*break*/, 12];
                    case 9:
                        _e.trys.push([9, 11, , 12]);
                        providerConfig = __assign(__assign({}, config), additional_info);
                        _d = this;
                        return [4 /*yield*/, TranscriptionServiceFactory_1.TranscriptionServiceFactory.create(provider, providerConfig)];
                    case 10:
                        _d.transcriptionService =
                            _e.sent();
                        this.addTranscriptionListeners();
                        this.emit("ready");
                        return [2 /*return*/];
                    case 11:
                        providerError_1 = _e.sent();
                        console.warn("Failed to initialize provider: ", providerError_1);
                        return [3 /*break*/, 12];
                    case 12:
                        _i++;
                        return [3 /*break*/, 2];
                    case 13: throw new Error("Failed to connect to any provider.");
                    case 14:
                        error_1 = _e.sent();
                        console.error("Error during initialization:", error_1);
                        return [3 /*break*/, 15];
                    case 15: return [2 /*return*/];
                }
            });
        });
    };
    SofyaTranscriber.prototype.addTranscriptionListeners = function () {
        var _this = this;
        if (this.transcriptionService) {
            // @ts-ignore
            this.transcriptionService.on("recognizing", function (text) {
                _this.emit("recognizing", text);
            });
            // @ts-ignore
            this.transcriptionService.on("recognized", function (text) {
                _this.emit("recognized", text);
            });
            // @ts-ignore
            this.transcriptionService.on("recognized_diarization", function (diarization) {
                _this.emit("recognized_diarization", diarization);
            });
            // @ts-ignore
            this.transcriptionService.on("error", function (error) {
                _this.emit("error", error);
            });
            // @ts-ignore
            this.transcriptionService.on("stopped", function () {
                _this.emit("stopped");
            });
            // @ts-ignore
            this.transcriptionService.on("connected", function () {
                _this.emit("connected");
            });
        }
    };
    SofyaTranscriber.prototype.authenticate = function (apiKey) {
        return __awaiter(this, void 0, void 0, function () {
            var authData, _a;
            return __generator(this, function (_b) {
                switch (_b.label) {
                    case 0:
                        _b.trys.push([0, 2, , 3]);
                        return [4 /*yield*/, (0, api_1.authService)(apiKey)];
                    case 1:
                        authData = _b.sent();
                        if ((authData === null || authData === void 0 ? void 0 : authData.providers) && Array.isArray(authData.providers)) {
                            return [2 /*return*/, authData];
                        }
                        throw new Error("Invalid authentication data format.");
                    case 2:
                        _a = _b.sent();
                        throw new Error("Could not authenticate. Validate your apiKey");
                    case 3: return [2 /*return*/];
                }
            });
        });
    };
    return SofyaTranscriber;
}(EventEmitter_1.default));
exports.SofyaTranscriber = SofyaTranscriber;
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