import { createSubscribe, deepCopy, deepExtend, ErrorFactory, patchProperty } from '@firebase/util';

/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
var contains = function (obj, key) {
    return Object.prototype.hasOwnProperty.call(obj, key);
};
var DEFAULT_ENTRY_NAME = '[DEFAULT]';
// An array to capture listeners before the true auth functions
// exist
var tokenListeners = [];
/**
 * Global context object for a collection of services using
 * a shared authentication state.
 */
var FirebaseAppImpl = /** @class */ (function () {
    function FirebaseAppImpl(options, config, firebase_) {
        this.firebase_ = firebase_;
        this.isDeleted_ = false;
        this.services_ = {};
        this.name_ = config.name;
        this._automaticDataCollectionEnabled =
            config.automaticDataCollectionEnabled || false;
        this.options_ = deepCopy(options);
        this.INTERNAL = {
            getUid: function () { return null; },
            getToken: function () { return Promise.resolve(null); },
            addAuthTokenListener: function (callback) {
                tokenListeners.push(callback);
                // Make sure callback is called, asynchronously, in the absence of the auth module
                setTimeout(function () { return callback(null); }, 0);
            },
            removeAuthTokenListener: function (callback) {
                tokenListeners = tokenListeners.filter(function (listener) { return listener !== callback; });
            }
        };
    }
    Object.defineProperty(FirebaseAppImpl.prototype, "automaticDataCollectionEnabled", {
        get: function () {
            this.checkDestroyed_();
            return this._automaticDataCollectionEnabled;
        },
        set: function (val) {
            this.checkDestroyed_();
            this._automaticDataCollectionEnabled = val;
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(FirebaseAppImpl.prototype, "name", {
        get: function () {
            this.checkDestroyed_();
            return this.name_;
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(FirebaseAppImpl.prototype, "options", {
        get: function () {
            this.checkDestroyed_();
            return this.options_;
        },
        enumerable: true,
        configurable: true
    });
    FirebaseAppImpl.prototype.delete = function () {
        var _this = this;
        return new Promise(function (resolve) {
            _this.checkDestroyed_();
            resolve();
        })
            .then(function () {
            _this.firebase_.INTERNAL.removeApp(_this.name_);
            var services = [];
            Object.keys(_this.services_).forEach(function (serviceKey) {
                Object.keys(_this.services_[serviceKey]).forEach(function (instanceKey) {
                    services.push(_this.services_[serviceKey][instanceKey]);
                });
            });
            return Promise.all(services.map(function (service) {
                return service.INTERNAL.delete();
            }));
        })
            .then(function () {
            _this.isDeleted_ = true;
            _this.services_ = {};
        });
    };
    /**
     * Return a service instance associated with this app (creating it
     * on demand), identified by the passed instanceIdentifier.
     *
     * NOTE: Currently storage is the only one that is leveraging this
     * functionality. They invoke it by calling:
     *
     * ```javascript
     * firebase.app().storage('STORAGE BUCKET ID')
     * ```
     *
     * The service name is passed to this already
     * @internal
     */
    FirebaseAppImpl.prototype._getService = function (name, instanceIdentifier) {
        if (instanceIdentifier === void 0) { instanceIdentifier = DEFAULT_ENTRY_NAME; }
        this.checkDestroyed_();
        if (!this.services_[name]) {
            this.services_[name] = {};
        }
        if (!this.services_[name][instanceIdentifier]) {
            /**
             * If a custom instance has been defined (i.e. not '[DEFAULT]')
             * then we will pass that instance on, otherwise we pass `null`
             */
            var instanceSpecifier = instanceIdentifier !== DEFAULT_ENTRY_NAME
                ? instanceIdentifier
                : undefined;
            var service = this.firebase_.INTERNAL.factories[name](this, this.extendApp.bind(this), instanceSpecifier);
            this.services_[name][instanceIdentifier] = service;
        }
        return this.services_[name][instanceIdentifier];
    };
    /**
     * Callback function used to extend an App instance at the time
     * of service instance creation.
     */
    FirebaseAppImpl.prototype.extendApp = function (props) {
        var _this = this;
        // Copy the object onto the FirebaseAppImpl prototype
        deepExtend(this, props);
        /**
         * If the app has overwritten the addAuthTokenListener stub, forward
         * the active token listeners on to the true fxn.
         *
         * TODO: This function is required due to our current module
         * structure. Once we are able to rely strictly upon a single module
         * implementation, this code should be refactored and Auth should
         * provide these stubs and the upgrade logic
         */
        if (props.INTERNAL && props.INTERNAL.addAuthTokenListener) {
            tokenListeners.forEach(function (listener) {
                _this.INTERNAL.addAuthTokenListener(listener);
            });
            tokenListeners = [];
        }
    };
    /**
     * This function will throw an Error if the App has already been deleted -
     * use before performing API actions on the App.
     */
    FirebaseAppImpl.prototype.checkDestroyed_ = function () {
        if (this.isDeleted_) {
            error('app-deleted', { name: this.name_ });
        }
    };
    return FirebaseAppImpl;
}());
// Prevent dead-code elimination of these methods w/o invalid property
// copying.
(FirebaseAppImpl.prototype.name && FirebaseAppImpl.prototype.options) ||
    FirebaseAppImpl.prototype.delete ||
    console.log('dc');
/**
 * Return a firebase namespace object.
 *
 * In production, this will be called exactly once and the result
 * assigned to the 'firebase' global.  It may be called multiple times
 * in unit tests.
 */
function createFirebaseNamespace() {
    var apps_ = {};
    var factories = {};
    var appHooks = {};
    // A namespace is a plain JavaScript Object.
    var namespace = {
        // Hack to prevent Babel from modifying the object returned
        // as the firebase namespace.
        __esModule: true,
        initializeApp: initializeApp,
        app: app,
        apps: null,
        Promise: Promise,
        SDK_VERSION: '5.8.1',
        INTERNAL: {
            registerService: registerService,
            createFirebaseNamespace: createFirebaseNamespace,
            extendNamespace: extendNamespace,
            createSubscribe: createSubscribe,
            ErrorFactory: ErrorFactory,
            removeApp: removeApp,
            factories: factories,
            useAsService: useAsService,
            Promise: Promise,
            deepExtend: deepExtend
        }
    };
    // Inject a circular default export to allow Babel users who were previously
    // using:
    //
    //   import firebase from 'firebase';
    //   which becomes: var firebase = require('firebase').default;
    //
    // instead of
    //
    //   import * as firebase from 'firebase';
    //   which becomes: var firebase = require('firebase');
    patchProperty(namespace, 'default', namespace);
    // firebase.apps is a read-only getter.
    Object.defineProperty(namespace, 'apps', {
        get: getApps
    });
    /**
     * Called by App.delete() - but before any services associated with the App
     * are deleted.
     */
    function removeApp(name) {
        var app = apps_[name];
        callAppHooks(app, 'delete');
        delete apps_[name];
    }
    /**
     * Get the App object for a given name (or DEFAULT).
     */
    function app(name) {
        name = name || DEFAULT_ENTRY_NAME;
        if (!contains(apps_, name)) {
            error('no-app', { name: name });
        }
        return apps_[name];
    }
    patchProperty(app, 'App', FirebaseAppImpl);
    function initializeApp(options, rawConfig) {
        if (rawConfig === void 0) { rawConfig = {}; }
        if (typeof rawConfig !== 'object' || rawConfig === null) {
            var name_1 = rawConfig;
            rawConfig = { name: name_1 };
        }
        var config = rawConfig;
        if (config.name === undefined) {
            config.name = DEFAULT_ENTRY_NAME;
        }
        var name = config.name;
        if (typeof name !== 'string' || !name) {
            error('bad-app-name', { name: name + '' });
        }
        if (contains(apps_, name)) {
            error('duplicate-app', { name: name });
        }
        var app = new FirebaseAppImpl(options, config, namespace);
        apps_[name] = app;
        callAppHooks(app, 'create');
        return app;
    }
    /*
     * Return an array of all the non-deleted FirebaseApps.
     */
    function getApps() {
        // Make a copy so caller cannot mutate the apps list.
        return Object.keys(apps_).map(function (name) { return apps_[name]; });
    }
    /*
     * Register a Firebase Service.
     *
     * firebase.INTERNAL.registerService()
     *
     * TODO: Implement serviceProperties.
     */
    function registerService(name, createService, serviceProperties, appHook, allowMultipleInstances) {
        // Cannot re-register a service that already exists
        if (factories[name]) {
            error('duplicate-service', { name: name });
        }
        // Capture the service factory for later service instantiation
        factories[name] = createService;
        // Capture the appHook, if passed
        if (appHook) {
            appHooks[name] = appHook;
            // Run the **new** app hook on all existing apps
            getApps().forEach(function (app) {
                appHook('create', app);
            });
        }
        // The Service namespace is an accessor function ...
        var serviceNamespace = function (appArg) {
            if (appArg === void 0) { appArg = app(); }
            if (typeof appArg[name] !== 'function') {
                // Invalid argument.
                // This happens in the following case: firebase.storage('gs:/')
                error('invalid-app-argument', { name: name });
            }
            // Forward service instance lookup to the FirebaseApp.
            return appArg[name]();
        };
        // ... and a container for service-level properties.
        if (serviceProperties !== undefined) {
            deepExtend(serviceNamespace, serviceProperties);
        }
        // Monkey-patch the serviceNamespace onto the firebase namespace
        namespace[name] = serviceNamespace;
        // Patch the FirebaseAppImpl prototype
        FirebaseAppImpl.prototype[name] = function () {
            var args = [];
            for (var _i = 0; _i < arguments.length; _i++) {
                args[_i] = arguments[_i];
            }
            var serviceFxn = this._getService.bind(this, name);
            return serviceFxn.apply(this, allowMultipleInstances ? args : []);
        };
        return serviceNamespace;
    }
    /**
     * Patch the top-level firebase namespace with additional properties.
     *
     * firebase.INTERNAL.extendNamespace()
     */
    function extendNamespace(props) {
        deepExtend(namespace, props);
    }
    function callAppHooks(app, eventName) {
        Object.keys(factories).forEach(function (serviceName) {
            // Ignore virtual services
            var factoryName = useAsService(app, serviceName);
            if (factoryName === null) {
                return;
            }
            if (appHooks[factoryName]) {
                appHooks[factoryName](eventName, app);
            }
        });
    }
    // Map the requested service to a registered service name
    // (used to map auth to serverAuth service when needed).
    function useAsService(app, name) {
        if (name === 'serverAuth') {
            return null;
        }
        var useService = name;
        var options = app.options;
        return useService;
    }
    return namespace;
}
function error(code, args) {
    throw appErrors.create(code, args);
}
// TypeScript does not support non-string indexes!
// let errors: {[code: AppError: string} = {
var errors = {
    'no-app': "No Firebase App '{$name}' has been created - " +
        'call Firebase App.initializeApp()',
    'bad-app-name': "Illegal App name: '{$name}",
    'duplicate-app': "Firebase App named '{$name}' already exists",
    'app-deleted': "Firebase App named '{$name}' already deleted",
    'duplicate-service': "Firebase service named '{$name}' already registered",
    'sa-not-supported': 'Initializing the Firebase SDK with a service ' +
        'account is only allowed in a Node.js environment. On client ' +
        'devices, you should instead initialize the SDK with an api key and ' +
        'auth domain',
    'invalid-app-argument': 'firebase.{$name}() takes either no argument or a ' +
        'Firebase App instance.'
};
var appErrors = new ErrorFactory('app', 'Firebase', errors);

/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
var firebase = createFirebaseNamespace();

export default firebase;
export { firebase };
