import { Component, ComponentContainer } from '@firebase/component';
import { Logger, setUserLogHandler, setLogLevel as setLogLevel$1 } from '@firebase/logger';
import { ErrorFactory, getDefaultAppConfig, deepEqual, FirebaseError, base64urlEncodeWithoutPadding, isIndexedDBAvailable, validateIndexedDBOpenable } from '@firebase/util';
export { FirebaseError } from '@firebase/util';
import { openDB } from 'idb';

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * 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.
 */
class PlatformLoggerServiceImpl {
    constructor(container) {
        this.container = container;
    }
    // In initial implementation, this will be called by installations on
    // auth token refresh, and installations will send this string.
    getPlatformInfoString() {
        const providers = this.container.getProviders();
        // Loop through providers and get library/version pairs from any that are
        // version components.
        return providers
            .map(provider => {
            if (isVersionServiceProvider(provider)) {
                const service = provider.getImmediate();
                return `${service.library}/${service.version}`;
            }
            else {
                return null;
            }
        })
            .filter(logString => logString)
            .join(' ');
    }
}
/**
 *
 * @param provider check if this provider provides a VersionService
 *
 * NOTE: Using Provider<'app-version'> is a hack to indicate that the provider
 * provides VersionService. The provider is not necessarily a 'app-version'
 * provider.
 */
function isVersionServiceProvider(provider) {
    const component = provider.getComponent();
    return (component === null || component === void 0 ? void 0 : component.type) === "VERSION" /* ComponentType.VERSION */;
}

const name$o = "@firebase/app";
const version$1 = "0.9.27";

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * 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.
 */
const logger = new Logger('@firebase/app');

const name$n = "@firebase/app-compat";

const name$m = "@firebase/analytics-compat";

const name$l = "@firebase/analytics";

const name$k = "@firebase/app-check-compat";

const name$j = "@firebase/app-check";

const name$i = "@firebase/auth";

const name$h = "@firebase/auth-compat";

const name$g = "@firebase/database";

const name$f = "@firebase/database-compat";

const name$e = "@firebase/functions";

const name$d = "@firebase/functions-compat";

const name$c = "@firebase/installations";

const name$b = "@firebase/installations-compat";

const name$a = "@firebase/messaging";

const name$9 = "@firebase/messaging-compat";

const name$8 = "@firebase/performance";

const name$7 = "@firebase/performance-compat";

const name$6 = "@firebase/remote-config";

const name$5 = "@firebase/remote-config-compat";

const name$4 = "@firebase/storage";

const name$3 = "@firebase/storage-compat";

const name$2 = "@firebase/firestore";

const name$1 = "@firebase/firestore-compat";

const name = "firebase";
const version = "10.8.0";

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * 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.
 */
/**
 * The default app name
 *
 * @internal
 */
const DEFAULT_ENTRY_NAME = '[DEFAULT]';
const PLATFORM_LOG_STRING = {
    [name$o]: 'fire-core',
    [name$n]: 'fire-core-compat',
    [name$l]: 'fire-analytics',
    [name$m]: 'fire-analytics-compat',
    [name$j]: 'fire-app-check',
    [name$k]: 'fire-app-check-compat',
    [name$i]: 'fire-auth',
    [name$h]: 'fire-auth-compat',
    [name$g]: 'fire-rtdb',
    [name$f]: 'fire-rtdb-compat',
    [name$e]: 'fire-fn',
    [name$d]: 'fire-fn-compat',
    [name$c]: 'fire-iid',
    [name$b]: 'fire-iid-compat',
    [name$a]: 'fire-fcm',
    [name$9]: 'fire-fcm-compat',
    [name$8]: 'fire-perf',
    [name$7]: 'fire-perf-compat',
    [name$6]: 'fire-rc',
    [name$5]: 'fire-rc-compat',
    [name$4]: 'fire-gcs',
    [name$3]: 'fire-gcs-compat',
    [name$2]: 'fire-fst',
    [name$1]: 'fire-fst-compat',
    'fire-js': 'fire-js',
    [name]: 'fire-js-all'
};

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * 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.
 */
/**
 * @internal
 */
const _apps = new Map();
/**
 * Registered components.
 *
 * @internal
 */
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const _components = new Map();
/**
 * @param component - the component being added to this app's container
 *
 * @internal
 */
function _addComponent(app, component) {
    try {
        app.container.addComponent(component);
    }
    catch (e) {
        logger.debug(`Component ${component.name} failed to register with FirebaseApp ${app.name}`, e);
    }
}
/**
 *
 * @internal
 */
function _addOrOverwriteComponent(app, component) {
    app.container.addOrOverwriteComponent(component);
}
/**
 *
 * @param component - the component to register
 * @returns whether or not the component is registered successfully
 *
 * @internal
 */
function _registerComponent(component) {
    const componentName = component.name;
    if (_components.has(componentName)) {
        logger.debug(`There were multiple attempts to register component ${componentName}.`);
        return false;
    }
    _components.set(componentName, component);
    // add the component to existing app instances
    for (const app of _apps.values()) {
        _addComponent(app, component);
    }
    return true;
}
/**
 *
 * @param app - FirebaseApp instance
 * @param name - service name
 *
 * @returns the provider for the service with the matching name
 *
 * @internal
 */
function _getProvider(app, name) {
    const heartbeatController = app.container
        .getProvider('heartbeat')
        .getImmediate({ optional: true });
    if (heartbeatController) {
        void heartbeatController.triggerHeartbeat();
    }
    return app.container.getProvider(name);
}
/**
 *
 * @param app - FirebaseApp instance
 * @param name - service name
 * @param instanceIdentifier - service instance identifier in case the service supports multiple instances
 *
 * @internal
 */
function _removeServiceInstance(app, name, instanceIdentifier = DEFAULT_ENTRY_NAME) {
    _getProvider(app, name).clearInstance(instanceIdentifier);
}
/**
 * Test only
 *
 * @internal
 */
function _clearComponents() {
    _components.clear();
}

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * 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.
 */
const ERRORS = {
    ["no-app" /* AppError.NO_APP */]: "No Firebase App '{$appName}' has been created - " +
        'call initializeApp() first',
    ["bad-app-name" /* AppError.BAD_APP_NAME */]: "Illegal App name: '{$appName}",
    ["duplicate-app" /* AppError.DUPLICATE_APP */]: "Firebase App named '{$appName}' already exists with different options or config",
    ["app-deleted" /* AppError.APP_DELETED */]: "Firebase App named '{$appName}' already deleted",
    ["no-options" /* AppError.NO_OPTIONS */]: 'Need to provide options, when not being deployed to hosting via source.',
    ["invalid-app-argument" /* AppError.INVALID_APP_ARGUMENT */]: 'firebase.{$appName}() takes either no argument or a ' +
        'Firebase App instance.',
    ["invalid-log-argument" /* AppError.INVALID_LOG_ARGUMENT */]: 'First argument to `onLog` must be null or a function.',
    ["idb-open" /* AppError.IDB_OPEN */]: 'Error thrown when opening IndexedDB. Original error: {$originalErrorMessage}.',
    ["idb-get" /* AppError.IDB_GET */]: 'Error thrown when reading from IndexedDB. Original error: {$originalErrorMessage}.',
    ["idb-set" /* AppError.IDB_WRITE */]: 'Error thrown when writing to IndexedDB. Original error: {$originalErrorMessage}.',
    ["idb-delete" /* AppError.IDB_DELETE */]: 'Error thrown when deleting from IndexedDB. Original error: {$originalErrorMessage}.'
};
const ERROR_FACTORY = new ErrorFactory('app', 'Firebase', ERRORS);

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * 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.
 */
class FirebaseAppImpl {
    constructor(options, config, container) {
        this._isDeleted = false;
        this._options = Object.assign({}, options);
        this._config = Object.assign({}, config);
        this._name = config.name;
        this._automaticDataCollectionEnabled =
            config.automaticDataCollectionEnabled;
        this._container = container;
        this.container.addComponent(new Component('app', () => this, "PUBLIC" /* ComponentType.PUBLIC */));
    }
    get automaticDataCollectionEnabled() {
        this.checkDestroyed();
        return this._automaticDataCollectionEnabled;
    }
    set automaticDataCollectionEnabled(val) {
        this.checkDestroyed();
        this._automaticDataCollectionEnabled = val;
    }
    get name() {
        this.checkDestroyed();
        return this._name;
    }
    get options() {
        this.checkDestroyed();
        return this._options;
    }
    get config() {
        this.checkDestroyed();
        return this._config;
    }
    get container() {
        return this._container;
    }
    get isDeleted() {
        return this._isDeleted;
    }
    set isDeleted(val) {
        this._isDeleted = val;
    }
    /**
     * This function will throw an Error if the App has already been deleted -
     * use before performing API actions on the App.
     */
    checkDestroyed() {
        if (this.isDeleted) {
            throw ERROR_FACTORY.create("app-deleted" /* AppError.APP_DELETED */, { appName: this._name });
        }
    }
}

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * 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.
 */
/**
 * The current SDK version.
 *
 * @public
 */
const SDK_VERSION = version;
function initializeApp(_options, rawConfig = {}) {
    let options = _options;
    if (typeof rawConfig !== 'object') {
        const name = rawConfig;
        rawConfig = { name };
    }
    const config = Object.assign({ name: DEFAULT_ENTRY_NAME, automaticDataCollectionEnabled: false }, rawConfig);
    const name = config.name;
    if (typeof name !== 'string' || !name) {
        throw ERROR_FACTORY.create("bad-app-name" /* AppError.BAD_APP_NAME */, {
            appName: String(name)
        });
    }
    options || (options = getDefaultAppConfig());
    if (!options) {
        throw ERROR_FACTORY.create("no-options" /* AppError.NO_OPTIONS */);
    }
    const existingApp = _apps.get(name);
    if (existingApp) {
        // return the existing app if options and config deep equal the ones in the existing app.
        if (deepEqual(options, existingApp.options) &&
            deepEqual(config, existingApp.config)) {
            return existingApp;
        }
        else {
            throw ERROR_FACTORY.create("duplicate-app" /* AppError.DUPLICATE_APP */, { appName: name });
        }
    }
    const container = new ComponentContainer(name);
    for (const component of _components.values()) {
        container.addComponent(component);
    }
    const newApp = new FirebaseAppImpl(options, config, container);
    _apps.set(name, newApp);
    return newApp;
}
/**
 * Retrieves a {@link @firebase/app#FirebaseApp} instance.
 *
 * When called with no arguments, the default app is returned. When an app name
 * is provided, the app corresponding to that name is returned.
 *
 * An exception is thrown if the app being retrieved has not yet been
 * initialized.
 *
 * @example
 * ```javascript
 * // Return the default app
 * const app = getApp();
 * ```
 *
 * @example
 * ```javascript
 * // Return a named app
 * const otherApp = getApp("otherApp");
 * ```
 *
 * @param name - Optional name of the app to return. If no name is
 *   provided, the default is `"[DEFAULT]"`.
 *
 * @returns The app corresponding to the provided app name.
 *   If no app name is provided, the default app is returned.
 *
 * @public
 */
function getApp(name = DEFAULT_ENTRY_NAME) {
    const app = _apps.get(name);
    if (!app && name === DEFAULT_ENTRY_NAME && getDefaultAppConfig()) {
        return initializeApp();
    }
    if (!app) {
        throw ERROR_FACTORY.create("no-app" /* AppError.NO_APP */, { appName: name });
    }
    return app;
}
/**
 * A (read-only) array of all initialized apps.
 * @public
 */
function getApps() {
    return Array.from(_apps.values());
}
/**
 * Renders this app unusable and frees the resources of all associated
 * services.
 *
 * @example
 * ```javascript
 * deleteApp(app)
 *   .then(function() {
 *     console.log("App deleted successfully");
 *   })
 *   .catch(function(error) {
 *     console.log("Error deleting app:", error);
 *   });
 * ```
 *
 * @public
 */
async function deleteApp(app) {
    const name = app.name;
    if (_apps.has(name)) {
        _apps.delete(name);
        await Promise.all(app.container
            .getProviders()
            .map(provider => provider.delete()));
        app.isDeleted = true;
    }
}
/**
 * Registers a library's name and version for platform logging purposes.
 * @param library - Name of 1p or 3p library (e.g. firestore, angularfire)
 * @param version - Current version of that library.
 * @param variant - Bundle variant, e.g., node, rn, etc.
 *
 * @public
 */
function registerVersion(libraryKeyOrName, version, variant) {
    var _a;
    // TODO: We can use this check to whitelist strings when/if we set up
    // a good whitelist system.
    let library = (_a = PLATFORM_LOG_STRING[libraryKeyOrName]) !== null && _a !== void 0 ? _a : libraryKeyOrName;
    if (variant) {
        library += `-${variant}`;
    }
    const libraryMismatch = library.match(/\s|\//);
    const versionMismatch = version.match(/\s|\//);
    if (libraryMismatch || versionMismatch) {
        const warning = [
            `Unable to register library "${library}" with version "${version}":`
        ];
        if (libraryMismatch) {
            warning.push(`library name "${library}" contains illegal characters (whitespace or "/")`);
        }
        if (libraryMismatch && versionMismatch) {
            warning.push('and');
        }
        if (versionMismatch) {
            warning.push(`version name "${version}" contains illegal characters (whitespace or "/")`);
        }
        logger.warn(warning.join(' '));
        return;
    }
    _registerComponent(new Component(`${library}-version`, () => ({ library, version }), "VERSION" /* ComponentType.VERSION */));
}
/**
 * Sets log handler for all Firebase SDKs.
 * @param logCallback - An optional custom log handler that executes user code whenever
 * the Firebase SDK makes a logging call.
 *
 * @public
 */
function onLog(logCallback, options) {
    if (logCallback !== null && typeof logCallback !== 'function') {
        throw ERROR_FACTORY.create("invalid-log-argument" /* AppError.INVALID_LOG_ARGUMENT */);
    }
    setUserLogHandler(logCallback, options);
}
/**
 * Sets log level for all Firebase SDKs.
 *
 * All of the log types above the current log level are captured (i.e. if
 * you set the log level to `info`, errors are logged, but `debug` and
 * `verbose` logs are not).
 *
 * @public
 */
function setLogLevel(logLevel) {
    setLogLevel$1(logLevel);
}

/**
 * @license
 * Copyright 2021 Google LLC
 *
 * 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.
 */
const DB_NAME = 'firebase-heartbeat-database';
const DB_VERSION = 1;
const STORE_NAME = 'firebase-heartbeat-store';
let dbPromise = null;
function getDbPromise() {
    if (!dbPromise) {
        dbPromise = openDB(DB_NAME, DB_VERSION, {
            upgrade: (db, oldVersion) => {
                // We don't use 'break' in this switch statement, the fall-through
                // behavior is what we want, because if there are multiple versions between
                // the old version and the current version, we want ALL the migrations
                // that correspond to those versions to run, not only the last one.
                // eslint-disable-next-line default-case
                switch (oldVersion) {
                    case 0:
                        try {
                            db.createObjectStore(STORE_NAME);
                        }
                        catch (e) {
                            // Safari/iOS browsers throw occasional exceptions on
                            // db.createObjectStore() that may be a bug. Avoid blocking
                            // the rest of the app functionality.
                            console.warn(e);
                        }
                }
            }
        }).catch(e => {
            throw ERROR_FACTORY.create("idb-open" /* AppError.IDB_OPEN */, {
                originalErrorMessage: e.message
            });
        });
    }
    return dbPromise;
}
async function readHeartbeatsFromIndexedDB(app) {
    try {
        const db = await getDbPromise();
        const tx = db.transaction(STORE_NAME);
        const result = await tx.objectStore(STORE_NAME).get(computeKey(app));
        // We already have the value but tx.done can throw,
        // so we need to await it here to catch errors
        await tx.done;
        return result;
    }
    catch (e) {
        if (e instanceof FirebaseError) {
            logger.warn(e.message);
        }
        else {
            const idbGetError = ERROR_FACTORY.create("idb-get" /* AppError.IDB_GET */, {
                originalErrorMessage: e === null || e === void 0 ? void 0 : e.message
            });
            logger.warn(idbGetError.message);
        }
    }
}
async function writeHeartbeatsToIndexedDB(app, heartbeatObject) {
    try {
        const db = await getDbPromise();
        const tx = db.transaction(STORE_NAME, 'readwrite');
        const objectStore = tx.objectStore(STORE_NAME);
        await objectStore.put(heartbeatObject, computeKey(app));
        await tx.done;
    }
    catch (e) {
        if (e instanceof FirebaseError) {
            logger.warn(e.message);
        }
        else {
            const idbGetError = ERROR_FACTORY.create("idb-set" /* AppError.IDB_WRITE */, {
                originalErrorMessage: e === null || e === void 0 ? void 0 : e.message
            });
            logger.warn(idbGetError.message);
        }
    }
}
function computeKey(app) {
    return `${app.name}!${app.options.appId}`;
}

/**
 * @license
 * Copyright 2021 Google LLC
 *
 * 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.
 */
const MAX_HEADER_BYTES = 1024;
// 30 days
const STORED_HEARTBEAT_RETENTION_MAX_MILLIS = 30 * 24 * 60 * 60 * 1000;
class HeartbeatServiceImpl {
    constructor(container) {
        this.container = container;
        /**
         * In-memory cache for heartbeats, used by getHeartbeatsHeader() to generate
         * the header string.
         * Stores one record per date. This will be consolidated into the standard
         * format of one record per user agent string before being sent as a header.
         * Populated from indexedDB when the controller is instantiated and should
         * be kept in sync with indexedDB.
         * Leave public for easier testing.
         */
        this._heartbeatsCache = null;
        const app = this.container.getProvider('app').getImmediate();
        this._storage = new HeartbeatStorageImpl(app);
        this._heartbeatsCachePromise = this._storage.read().then(result => {
            this._heartbeatsCache = result;
            return result;
        });
    }
    /**
     * Called to report a heartbeat. The function will generate
     * a HeartbeatsByUserAgent object, update heartbeatsCache, and persist it
     * to IndexedDB.
     * Note that we only store one heartbeat per day. So if a heartbeat for today is
     * already logged, subsequent calls to this function in the same day will be ignored.
     */
    async triggerHeartbeat() {
        var _a, _b;
        const platformLogger = this.container
            .getProvider('platform-logger')
            .getImmediate();
        // This is the "Firebase user agent" string from the platform logger
        // service, not the browser user agent.
        const agent = platformLogger.getPlatformInfoString();
        const date = getUTCDateString();
        if (((_a = this._heartbeatsCache) === null || _a === void 0 ? void 0 : _a.heartbeats) == null) {
            this._heartbeatsCache = await this._heartbeatsCachePromise;
            // If we failed to construct a heartbeats cache, then return immediately.
            if (((_b = this._heartbeatsCache) === null || _b === void 0 ? void 0 : _b.heartbeats) == null) {
                return;
            }
        }
        // Do not store a heartbeat if one is already stored for this day
        // or if a header has already been sent today.
        if (this._heartbeatsCache.lastSentHeartbeatDate === date ||
            this._heartbeatsCache.heartbeats.some(singleDateHeartbeat => singleDateHeartbeat.date === date)) {
            return;
        }
        else {
            // There is no entry for this date. Create one.
            this._heartbeatsCache.heartbeats.push({ date, agent });
        }
        // Remove entries older than 30 days.
        this._heartbeatsCache.heartbeats = this._heartbeatsCache.heartbeats.filter(singleDateHeartbeat => {
            const hbTimestamp = new Date(singleDateHeartbeat.date).valueOf();
            const now = Date.now();
            return now - hbTimestamp <= STORED_HEARTBEAT_RETENTION_MAX_MILLIS;
        });
        return this._storage.overwrite(this._heartbeatsCache);
    }
    /**
     * Returns a base64 encoded string which can be attached to the heartbeat-specific header directly.
     * It also clears all heartbeats from memory as well as in IndexedDB.
     *
     * NOTE: Consuming product SDKs should not send the header if this method
     * returns an empty string.
     */
    async getHeartbeatsHeader() {
        var _a;
        if (this._heartbeatsCache === null) {
            await this._heartbeatsCachePromise;
        }
        // If it's still null or the array is empty, there is no data to send.
        if (((_a = this._heartbeatsCache) === null || _a === void 0 ? void 0 : _a.heartbeats) == null ||
            this._heartbeatsCache.heartbeats.length === 0) {
            return '';
        }
        const date = getUTCDateString();
        // Extract as many heartbeats from the cache as will fit under the size limit.
        const { heartbeatsToSend, unsentEntries } = extractHeartbeatsForHeader(this._heartbeatsCache.heartbeats);
        const headerString = base64urlEncodeWithoutPadding(JSON.stringify({ version: 2, heartbeats: heartbeatsToSend }));
        // Store last sent date to prevent another being logged/sent for the same day.
        this._heartbeatsCache.lastSentHeartbeatDate = date;
        if (unsentEntries.length > 0) {
            // Store any unsent entries if they exist.
            this._heartbeatsCache.heartbeats = unsentEntries;
            // This seems more likely than emptying the array (below) to lead to some odd state
            // since the cache isn't empty and this will be called again on the next request,
            // and is probably safest if we await it.
            await this._storage.overwrite(this._heartbeatsCache);
        }
        else {
            this._heartbeatsCache.heartbeats = [];
            // Do not wait for this, to reduce latency.
            void this._storage.overwrite(this._heartbeatsCache);
        }
        return headerString;
    }
}
function getUTCDateString() {
    const today = new Date();
    // Returns date format 'YYYY-MM-DD'
    return today.toISOString().substring(0, 10);
}
function extractHeartbeatsForHeader(heartbeatsCache, maxSize = MAX_HEADER_BYTES) {
    // Heartbeats grouped by user agent in the standard format to be sent in
    // the header.
    const heartbeatsToSend = [];
    // Single date format heartbeats that are not sent.
    let unsentEntries = heartbeatsCache.slice();
    for (const singleDateHeartbeat of heartbeatsCache) {
        // Look for an existing entry with the same user agent.
        const heartbeatEntry = heartbeatsToSend.find(hb => hb.agent === singleDateHeartbeat.agent);
        if (!heartbeatEntry) {
            // If no entry for this user agent exists, create one.
            heartbeatsToSend.push({
                agent: singleDateHeartbeat.agent,
                dates: [singleDateHeartbeat.date]
            });
            if (countBytes(heartbeatsToSend) > maxSize) {
                // If the header would exceed max size, remove the added heartbeat
                // entry and stop adding to the header.
                heartbeatsToSend.pop();
                break;
            }
        }
        else {
            heartbeatEntry.dates.push(singleDateHeartbeat.date);
            // If the header would exceed max size, remove the added date
            // and stop adding to the header.
            if (countBytes(heartbeatsToSend) > maxSize) {
                heartbeatEntry.dates.pop();
                break;
            }
        }
        // Pop unsent entry from queue. (Skipped if adding the entry exceeded
        // quota and the loop breaks early.)
        unsentEntries = unsentEntries.slice(1);
    }
    return {
        heartbeatsToSend,
        unsentEntries
    };
}
class HeartbeatStorageImpl {
    constructor(app) {
        this.app = app;
        this._canUseIndexedDBPromise = this.runIndexedDBEnvironmentCheck();
    }
    async runIndexedDBEnvironmentCheck() {
        if (!isIndexedDBAvailable()) {
            return false;
        }
        else {
            return validateIndexedDBOpenable()
                .then(() => true)
                .catch(() => false);
        }
    }
    /**
     * Read all heartbeats.
     */
    async read() {
        const canUseIndexedDB = await this._canUseIndexedDBPromise;
        if (!canUseIndexedDB) {
            return { heartbeats: [] };
        }
        else {
            const idbHeartbeatObject = await readHeartbeatsFromIndexedDB(this.app);
            if (idbHeartbeatObject === null || idbHeartbeatObject === void 0 ? void 0 : idbHeartbeatObject.heartbeats) {
                return idbHeartbeatObject;
            }
            else {
                return { heartbeats: [] };
            }
        }
    }
    // overwrite the storage with the provided heartbeats
    async overwrite(heartbeatsObject) {
        var _a;
        const canUseIndexedDB = await this._canUseIndexedDBPromise;
        if (!canUseIndexedDB) {
            return;
        }
        else {
            const existingHeartbeatsObject = await this.read();
            return writeHeartbeatsToIndexedDB(this.app, {
                lastSentHeartbeatDate: (_a = heartbeatsObject.lastSentHeartbeatDate) !== null && _a !== void 0 ? _a : existingHeartbeatsObject.lastSentHeartbeatDate,
                heartbeats: heartbeatsObject.heartbeats
            });
        }
    }
    // add heartbeats
    async add(heartbeatsObject) {
        var _a;
        const canUseIndexedDB = await this._canUseIndexedDBPromise;
        if (!canUseIndexedDB) {
            return;
        }
        else {
            const existingHeartbeatsObject = await this.read();
            return writeHeartbeatsToIndexedDB(this.app, {
                lastSentHeartbeatDate: (_a = heartbeatsObject.lastSentHeartbeatDate) !== null && _a !== void 0 ? _a : existingHeartbeatsObject.lastSentHeartbeatDate,
                heartbeats: [
                    ...existingHeartbeatsObject.heartbeats,
                    ...heartbeatsObject.heartbeats
                ]
            });
        }
    }
}
/**
 * Calculate bytes of a HeartbeatsByUserAgent array after being wrapped
 * in a platform logging header JSON object, stringified, and converted
 * to base 64.
 */
function countBytes(heartbeatsCache) {
    // base64 has a restricted set of characters, all of which should be 1 byte.
    return base64urlEncodeWithoutPadding(
    // heartbeatsCache wrapper properties
    JSON.stringify({ version: 2, heartbeats: heartbeatsCache })).length;
}

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * 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.
 */
function registerCoreComponents(variant) {
    _registerComponent(new Component('platform-logger', container => new PlatformLoggerServiceImpl(container), "PRIVATE" /* ComponentType.PRIVATE */));
    _registerComponent(new Component('heartbeat', container => new HeartbeatServiceImpl(container), "PRIVATE" /* ComponentType.PRIVATE */));
    // Register `app` package.
    registerVersion(name$o, version$1, variant);
    // BUILD_TARGET will be replaced by values like esm5, esm2017, cjs5, etc during the compilation
    registerVersion(name$o, version$1, 'esm2017');
    // Register platform SDK identifier (no version).
    registerVersion('fire-js', '');
}

/**
 * Firebase App
 *
 * @remarks This package coordinates the communication between the different Firebase components
 * @packageDocumentation
 */
registerCoreComponents('');

export { SDK_VERSION, DEFAULT_ENTRY_NAME as _DEFAULT_ENTRY_NAME, _addComponent, _addOrOverwriteComponent, _apps, _clearComponents, _components, _getProvider, _registerComponent, _removeServiceInstance, deleteApp, getApp, getApps, initializeApp, onLog, registerVersion, setLogLevel };
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