'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }

var firebase = _interopDefault(require('@firebase/app'));
var tslib_1 = require('tslib');
var util = require('@firebase/util');
var idb = require('idb');

var version = "0.2.6";

/**
 * @license
 * Copyright 2019 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 PENDING_TIMEOUT_MS = 10000;
var PACKAGE_VERSION = "w:" + version;
var INTERNAL_AUTH_VERSION = 'FIS_v2';
var INSTALLATIONS_API_URL = 'https://firebaseinstallations.googleapis.com/v1';
var TOKEN_EXPIRATION_BUFFER = 60 * 60 * 1000; // One hour
var SERVICE = 'installations';
var SERVICE_NAME = 'Installations';

/**
 * @license
 * Copyright 2019 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 _a;
var ERROR_DESCRIPTION_MAP = (_a = {},
    _a["missing-app-config-values" /* MISSING_APP_CONFIG_VALUES */] = 'Missing App configuration values.',
    _a["create-installation-failed" /* CREATE_INSTALLATION_FAILED */] = 'Could not register Firebase Installation.',
    _a["generate-token-failed" /* GENERATE_TOKEN_FAILED */] = 'Could not generate Auth Token.',
    _a["not-registered" /* NOT_REGISTERED */] = 'Firebase Installation is not registered.',
    _a["installation-not-found" /* INSTALLATION_NOT_FOUND */] = 'Firebase Installation not found.',
    _a["request-failed" /* REQUEST_FAILED */] = '{$requestName} request failed with error "{$serverCode} {$serverStatus}: {$serverMessage}"',
    _a["app-offline" /* APP_OFFLINE */] = 'Could not process request. Application offline.',
    _a["delete-pending-registration" /* DELETE_PENDING_REGISTRATION */] = "Can't delete installation while there is a pending registration request.",
    _a);
var ERROR_FACTORY = new util.ErrorFactory(SERVICE, SERVICE_NAME, ERROR_DESCRIPTION_MAP);
/** Returns true if error is a FirebaseError that is based on an error from the server. */
function isServerError(error) {
    return (error instanceof util.FirebaseError &&
        error.code.includes("request-failed" /* REQUEST_FAILED */));
}

/**
 * @license
 * Copyright 2019 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.
 */
function extractAppConfig(app) {
    if (!app || !app.options) {
        throw ERROR_FACTORY.create("missing-app-config-values" /* MISSING_APP_CONFIG_VALUES */);
    }
    var appName = app.name;
    var _a = app.options, projectId = _a.projectId, apiKey = _a.apiKey, appId = _a.appId;
    if (!appName || !projectId || !apiKey || !appId) {
        throw ERROR_FACTORY.create("missing-app-config-values" /* MISSING_APP_CONFIG_VALUES */);
    }
    return { appName: appName, projectId: projectId, apiKey: apiKey, appId: appId };
}

/**
 * @license
 * Copyright 2019 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.
 */
function getInstallationsEndpoint(_a) {
    var projectId = _a.projectId;
    return INSTALLATIONS_API_URL + "/projects/" + projectId + "/installations";
}
function extractAuthTokenInfoFromResponse(response) {
    return {
        token: response.token,
        requestStatus: 2 /* COMPLETED */,
        expiresIn: getExpiresInFromResponseExpiresIn(response.expiresIn),
        creationTime: Date.now()
    };
}
function getErrorFromResponse(requestName, response) {
    return tslib_1.__awaiter(this, void 0, void 0, function () {
        var responseJson, errorData;
        return tslib_1.__generator(this, function (_a) {
            switch (_a.label) {
                case 0: return [4 /*yield*/, response.json()];
                case 1:
                    responseJson = _a.sent();
                    errorData = responseJson.error;
                    return [2 /*return*/, ERROR_FACTORY.create("request-failed" /* REQUEST_FAILED */, {
                            requestName: requestName,
                            serverCode: errorData.code,
                            serverMessage: errorData.message,
                            serverStatus: errorData.status
                        })];
            }
        });
    });
}
function getHeaders(_a) {
    var apiKey = _a.apiKey;
    return new Headers({
        'Content-Type': 'application/json',
        Accept: 'application/json',
        'x-goog-api-key': apiKey
    });
}
function getHeadersWithAuth(appConfig, _a) {
    var refreshToken = _a.refreshToken;
    var headers = getHeaders(appConfig);
    headers.append('Authorization', getAuthorizationHeader(refreshToken));
    return headers;
}
/**
 * Calls the passed in fetch wrapper and returns the response.
 * If the returned response has a status of 5xx, re-runs the function once and
 * returns the response.
 */
function retryIfServerError(fn) {
    return tslib_1.__awaiter(this, void 0, void 0, function () {
        var result;
        return tslib_1.__generator(this, function (_a) {
            switch (_a.label) {
                case 0: return [4 /*yield*/, fn()];
                case 1:
                    result = _a.sent();
                    if (result.status >= 500 && result.status < 600) {
                        // Internal Server Error. Retry request.
                        return [2 /*return*/, fn()];
                    }
                    return [2 /*return*/, result];
            }
        });
    });
}
function getExpiresInFromResponseExpiresIn(responseExpiresIn) {
    // This works because the server will never respond with fractions of a second.
    return Number(responseExpiresIn.replace('s', '000'));
}
function getAuthorizationHeader(refreshToken) {
    return INTERNAL_AUTH_VERSION + " " + refreshToken;
}

/**
 * @license
 * Copyright 2019 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.
 */
function createInstallation(appConfig, _a) {
    var fid = _a.fid;
    return tslib_1.__awaiter(this, void 0, void 0, function () {
        var endpoint, headers, body, request, response, responseValue, registeredInstallationEntry;
        return tslib_1.__generator(this, function (_b) {
            switch (_b.label) {
                case 0:
                    endpoint = getInstallationsEndpoint(appConfig);
                    headers = getHeaders(appConfig);
                    body = {
                        fid: fid,
                        authVersion: INTERNAL_AUTH_VERSION,
                        appId: appConfig.appId,
                        sdkVersion: PACKAGE_VERSION
                    };
                    request = {
                        method: 'POST',
                        headers: headers,
                        body: JSON.stringify(body)
                    };
                    return [4 /*yield*/, retryIfServerError(function () { return fetch(endpoint, request); })];
                case 1:
                    response = _b.sent();
                    if (!response.ok) return [3 /*break*/, 3];
                    return [4 /*yield*/, response.json()];
                case 2:
                    responseValue = _b.sent();
                    registeredInstallationEntry = {
                        fid: responseValue.fid || fid,
                        registrationStatus: 2 /* COMPLETED */,
                        refreshToken: responseValue.refreshToken,
                        authToken: extractAuthTokenInfoFromResponse(responseValue.authToken)
                    };
                    return [2 /*return*/, registeredInstallationEntry];
                case 3: return [4 /*yield*/, getErrorFromResponse('Create Installation', response)];
                case 4: throw _b.sent();
            }
        });
    });
}

/**
 * @license
 * Copyright 2019 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.
 */
/** Returns a promise that resolves after given time passes. */
function sleep(ms) {
    return new Promise(function (resolve) {
        setTimeout(resolve, ms);
    });
}

/**
 * @license
 * Copyright 2019 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.
 */
function bufferToBase64UrlSafe(array) {
    var b64 = btoa(String.fromCharCode.apply(String, tslib_1.__spread(array)));
    return b64.replace(/\+/g, '-').replace(/\//g, '_');
}

/**
 * @license
 * Copyright 2019 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 VALID_FID_PATTERN = /^[cdef][\w-]{21}$/;
var INVALID_FID = '';
/**
 * Generates a new FID using random values from Web Crypto API.
 * Returns an empty string if FID generation fails for any reason.
 */
function generateFid() {
    try {
        // A valid FID has exactly 22 base64 characters, which is 132 bits, or 16.5
        // bytes. our implementation generates a 17 byte array instead.
        var fidByteArray = new Uint8Array(17);
        var crypto_1 = self.crypto || self.msCrypto;
        crypto_1.getRandomValues(fidByteArray);
        // Replace the first 4 random bits with the constant FID header of 0b0111.
        fidByteArray[0] = 112 + (fidByteArray[0] % 16);
        var fid = encode(fidByteArray);
        return VALID_FID_PATTERN.test(fid) ? fid : INVALID_FID;
    }
    catch (_a) {
        // FID generation errored
        return INVALID_FID;
    }
}
/** Converts a FID Uint8Array to a base64 string representation. */
function encode(fidByteArray) {
    var b64String = bufferToBase64UrlSafe(fidByteArray);
    // Remove the 23rd character that was added because of the extra 4 bits at the
    // end of our 17 byte array, and the '=' padding.
    return b64String.substr(0, 22);
}

/**
 * @license
 * Copyright 2019 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 DATABASE_NAME = 'firebase-installations-database';
var DATABASE_VERSION = 1;
var OBJECT_STORE_NAME = 'firebase-installations-store';
var dbPromise = null;
function getDbPromise() {
    if (!dbPromise) {
        dbPromise = idb.openDb(DATABASE_NAME, DATABASE_VERSION, function (upgradeDB) {
            // 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 (upgradeDB.oldVersion) {
                case 0:
                    upgradeDB.createObjectStore(OBJECT_STORE_NAME);
            }
        });
    }
    return dbPromise;
}
/** Assigns or overwrites the record for the given key with the given value. */
function set(appConfig, value) {
    return tslib_1.__awaiter(this, void 0, void 0, function () {
        var key, db, tx;
        return tslib_1.__generator(this, function (_a) {
            switch (_a.label) {
                case 0:
                    key = getKey(appConfig);
                    return [4 /*yield*/, getDbPromise()];
                case 1:
                    db = _a.sent();
                    tx = db.transaction(OBJECT_STORE_NAME, 'readwrite');
                    return [4 /*yield*/, tx.objectStore(OBJECT_STORE_NAME).put(value, key)];
                case 2:
                    _a.sent();
                    return [4 /*yield*/, tx.complete];
                case 3:
                    _a.sent();
                    return [2 /*return*/, value];
            }
        });
    });
}
/** Removes record(s) from the objectStore that match the given key. */
function remove(appConfig) {
    return tslib_1.__awaiter(this, void 0, void 0, function () {
        var key, db, tx;
        return tslib_1.__generator(this, function (_a) {
            switch (_a.label) {
                case 0:
                    key = getKey(appConfig);
                    return [4 /*yield*/, getDbPromise()];
                case 1:
                    db = _a.sent();
                    tx = db.transaction(OBJECT_STORE_NAME, 'readwrite');
                    return [4 /*yield*/, tx.objectStore(OBJECT_STORE_NAME).delete(key)];
                case 2:
                    _a.sent();
                    return [4 /*yield*/, tx.complete];
                case 3:
                    _a.sent();
                    return [2 /*return*/];
            }
        });
    });
}
/**
 * Atomically updates a record with the result of updateFn, which gets
 * called with the current value. If newValue is undefined, the record is
 * deleted instead.
 * @return Updated value
 */
function update(appConfig, updateFn) {
    return tslib_1.__awaiter(this, void 0, void 0, function () {
        var key, db, tx, store, oldValue, newValue;
        return tslib_1.__generator(this, function (_a) {
            switch (_a.label) {
                case 0:
                    key = getKey(appConfig);
                    return [4 /*yield*/, getDbPromise()];
                case 1:
                    db = _a.sent();
                    tx = db.transaction(OBJECT_STORE_NAME, 'readwrite');
                    store = tx.objectStore(OBJECT_STORE_NAME);
                    return [4 /*yield*/, store.get(key)];
                case 2:
                    oldValue = _a.sent();
                    newValue = updateFn(oldValue);
                    if (newValue === oldValue) {
                        return [2 /*return*/, newValue];
                    }
                    if (!(newValue === undefined)) return [3 /*break*/, 4];
                    return [4 /*yield*/, store.delete(key)];
                case 3:
                    _a.sent();
                    return [3 /*break*/, 6];
                case 4: return [4 /*yield*/, store.put(newValue, key)];
                case 5:
                    _a.sent();
                    _a.label = 6;
                case 6: return [4 /*yield*/, tx.complete];
                case 7:
                    _a.sent();
                    return [2 /*return*/, newValue];
            }
        });
    });
}
function getKey(appConfig) {
    return appConfig.appName + "!" + appConfig.appId;
}

/**
 * @license
 * Copyright 2019 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.
 */
/**
 * Updates and returns the InstallationEntry from the database.
 * Also triggers a registration request if it is necessary and possible.
 */
function getInstallationEntry(appConfig) {
    return tslib_1.__awaiter(this, void 0, void 0, function () {
        var registrationPromise, installationEntry, _a;
        return tslib_1.__generator(this, function (_b) {
            switch (_b.label) {
                case 0: return [4 /*yield*/, update(appConfig, function (oldEntry) {
                        var installationEntry = updateOrCreateInstallationEntry(oldEntry);
                        var entryWithPromise = triggerRegistrationIfNecessary(appConfig, installationEntry);
                        registrationPromise = entryWithPromise.registrationPromise;
                        return entryWithPromise.installationEntry;
                    })];
                case 1:
                    installationEntry = _b.sent();
                    if (!(installationEntry.fid === INVALID_FID)) return [3 /*break*/, 3];
                    _a = {};
                    return [4 /*yield*/, registrationPromise];
                case 2: 
                // FID generation failed. Waiting for the FID from the server.
                return [2 /*return*/, (_a.installationEntry = _b.sent(), _a)];
                case 3: return [2 /*return*/, {
                        installationEntry: installationEntry,
                        registrationPromise: registrationPromise
                    }];
            }
        });
    });
}
function updateOrCreateInstallationEntry(oldEntry) {
    var entry = oldEntry || {
        fid: generateFid(),
        registrationStatus: 0 /* NOT_STARTED */
    };
    if (hasInstallationRequestTimedOut(entry)) {
        return {
            fid: entry.fid,
            registrationStatus: 0 /* NOT_STARTED */
        };
    }
    return entry;
}
/**
 * If the Firebase Installation is not registered yet, this will trigger the registration
 * and return an InProgressInstallationEntry.
 */
function triggerRegistrationIfNecessary(appConfig, installationEntry) {
    if (installationEntry.registrationStatus === 0 /* NOT_STARTED */) {
        if (!navigator.onLine) {
            // Registration required but app is offline.
            var registrationPromiseWithError = Promise.reject(ERROR_FACTORY.create("app-offline" /* APP_OFFLINE */));
            return {
                installationEntry: installationEntry,
                registrationPromise: registrationPromiseWithError
            };
        }
        // Try registering. Change status to IN_PROGRESS.
        var inProgressEntry = {
            fid: installationEntry.fid,
            registrationStatus: 1 /* IN_PROGRESS */,
            registrationTime: Date.now()
        };
        var registrationPromise = registerInstallation(appConfig, inProgressEntry);
        return { installationEntry: inProgressEntry, registrationPromise: registrationPromise };
    }
    else if (installationEntry.registrationStatus === 1 /* IN_PROGRESS */) {
        return {
            installationEntry: installationEntry,
            registrationPromise: waitUntilFidRegistration(appConfig)
        };
    }
    else {
        return { installationEntry: installationEntry };
    }
}
/** This will be executed only once for each new Firebase Installation. */
function registerInstallation(appConfig, installationEntry) {
    return tslib_1.__awaiter(this, void 0, void 0, function () {
        var registeredInstallationEntry, e_1;
        return tslib_1.__generator(this, function (_a) {
            switch (_a.label) {
                case 0:
                    _a.trys.push([0, 2, , 7]);
                    return [4 /*yield*/, createInstallation(appConfig, installationEntry)];
                case 1:
                    registeredInstallationEntry = _a.sent();
                    return [2 /*return*/, set(appConfig, registeredInstallationEntry)];
                case 2:
                    e_1 = _a.sent();
                    if (!(isServerError(e_1) && e_1.serverCode === 409)) return [3 /*break*/, 4];
                    // Server returned a "FID can not be used" error.
                    // Generate a new ID next time.
                    return [4 /*yield*/, remove(appConfig)];
                case 3:
                    // Server returned a "FID can not be used" error.
                    // Generate a new ID next time.
                    _a.sent();
                    return [3 /*break*/, 6];
                case 4: 
                // Registration failed. Set FID as not registered.
                return [4 /*yield*/, set(appConfig, {
                        fid: installationEntry.fid,
                        registrationStatus: 0 /* NOT_STARTED */
                    })];
                case 5:
                    // Registration failed. Set FID as not registered.
                    _a.sent();
                    _a.label = 6;
                case 6: throw e_1;
                case 7: return [2 /*return*/];
            }
        });
    });
}
/** Call if FID registration is pending. */
function waitUntilFidRegistration(appConfig) {
    return tslib_1.__awaiter(this, void 0, void 0, function () {
        var entry;
        return tslib_1.__generator(this, function (_a) {
            switch (_a.label) {
                case 0: return [4 /*yield*/, updateInstallationRequest(appConfig)];
                case 1:
                    entry = _a.sent();
                    _a.label = 2;
                case 2:
                    if (!(entry.registrationStatus === 1 /* IN_PROGRESS */)) return [3 /*break*/, 5];
                    // createInstallation request still in progress.
                    return [4 /*yield*/, sleep(100)];
                case 3:
                    // createInstallation request still in progress.
                    _a.sent();
                    return [4 /*yield*/, updateInstallationRequest(appConfig)];
                case 4:
                    entry = _a.sent();
                    return [3 /*break*/, 2];
                case 5:
                    if (entry.registrationStatus === 0 /* NOT_STARTED */) {
                        throw ERROR_FACTORY.create("create-installation-failed" /* CREATE_INSTALLATION_FAILED */);
                    }
                    return [2 /*return*/, entry];
            }
        });
    });
}
/**
 * Called only if there is a CreateInstallation request in progress.
 *
 * Updates the InstallationEntry in the DB based on the status of the
 * CreateInstallation request.
 *
 * Returns the updated InstallationEntry.
 */
function updateInstallationRequest(appConfig) {
    return update(appConfig, function (oldEntry) {
        if (!oldEntry) {
            throw ERROR_FACTORY.create("installation-not-found" /* INSTALLATION_NOT_FOUND */);
        }
        if (hasInstallationRequestTimedOut(oldEntry)) {
            return {
                fid: oldEntry.fid,
                registrationStatus: 0 /* NOT_STARTED */
            };
        }
        return oldEntry;
    });
}
function hasInstallationRequestTimedOut(installationEntry) {
    return (installationEntry.registrationStatus === 1 /* IN_PROGRESS */ &&
        installationEntry.registrationTime + PENDING_TIMEOUT_MS < Date.now());
}

/**
 * @license
 * Copyright 2019 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.
 */
function generateAuthToken(appConfig, installationEntry) {
    return tslib_1.__awaiter(this, void 0, void 0, function () {
        var endpoint, headers, body, request, response, responseValue, completedAuthToken;
        return tslib_1.__generator(this, function (_a) {
            switch (_a.label) {
                case 0:
                    endpoint = getGenerateAuthTokenEndpoint(appConfig, installationEntry);
                    headers = getHeadersWithAuth(appConfig, installationEntry);
                    body = {
                        installation: {
                            sdkVersion: PACKAGE_VERSION
                        }
                    };
                    request = {
                        method: 'POST',
                        headers: headers,
                        body: JSON.stringify(body)
                    };
                    return [4 /*yield*/, retryIfServerError(function () { return fetch(endpoint, request); })];
                case 1:
                    response = _a.sent();
                    if (!response.ok) return [3 /*break*/, 3];
                    return [4 /*yield*/, response.json()];
                case 2:
                    responseValue = _a.sent();
                    completedAuthToken = extractAuthTokenInfoFromResponse(responseValue);
                    return [2 /*return*/, completedAuthToken];
                case 3: return [4 /*yield*/, getErrorFromResponse('Generate Auth Token', response)];
                case 4: throw _a.sent();
            }
        });
    });
}
function getGenerateAuthTokenEndpoint(appConfig, _a) {
    var fid = _a.fid;
    return getInstallationsEndpoint(appConfig) + "/" + fid + "/authTokens:generate";
}

/**
 * @license
 * Copyright 2019 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.
 */
/**
 * Returns a valid authentication token for the installation. Generates a new
 * token if one doesn't exist, is expired or about to expire.
 *
 * Should only be called if the Firebase Installation is registered.
 */
function refreshAuthToken(appConfig) {
    return tslib_1.__awaiter(this, void 0, void 0, function () {
        var tokenPromise, entry, authToken, _a;
        return tslib_1.__generator(this, function (_b) {
            switch (_b.label) {
                case 0: return [4 /*yield*/, update(appConfig, function (oldEntry) {
                        if (!isEntryRegistered(oldEntry)) {
                            throw ERROR_FACTORY.create("not-registered" /* NOT_REGISTERED */);
                        }
                        var oldAuthToken = oldEntry.authToken;
                        if (isAuthTokenValid(oldAuthToken)) {
                            // There is a valid token in the DB.
                            return oldEntry;
                        }
                        else if (oldAuthToken.requestStatus === 1 /* IN_PROGRESS */) {
                            // There already is a token request in progress.
                            tokenPromise = waitUntilAuthTokenRequest(appConfig);
                            return oldEntry;
                        }
                        else {
                            // No token or token expired.
                            if (!navigator.onLine) {
                                throw ERROR_FACTORY.create("app-offline" /* APP_OFFLINE */);
                            }
                            var inProgressEntry = makeAuthTokenRequestInProgressEntry(oldEntry);
                            tokenPromise = fetchAuthTokenFromServer(appConfig, inProgressEntry);
                            return inProgressEntry;
                        }
                    })];
                case 1:
                    entry = _b.sent();
                    if (!tokenPromise) return [3 /*break*/, 3];
                    return [4 /*yield*/, tokenPromise];
                case 2:
                    _a = _b.sent();
                    return [3 /*break*/, 4];
                case 3:
                    _a = entry.authToken;
                    _b.label = 4;
                case 4:
                    authToken = _a;
                    return [2 /*return*/, authToken.token];
            }
        });
    });
}
/**
 * Call only if FID is registered and Auth Token request is in progress.
 */
function waitUntilAuthTokenRequest(appConfig) {
    return tslib_1.__awaiter(this, void 0, void 0, function () {
        var entry, authToken;
        return tslib_1.__generator(this, function (_a) {
            switch (_a.label) {
                case 0: return [4 /*yield*/, updateAuthTokenRequest(appConfig)];
                case 1:
                    entry = _a.sent();
                    _a.label = 2;
                case 2:
                    if (!(entry.authToken.requestStatus === 1 /* IN_PROGRESS */)) return [3 /*break*/, 5];
                    // generateAuthToken still in progress.
                    return [4 /*yield*/, sleep(100)];
                case 3:
                    // generateAuthToken still in progress.
                    _a.sent();
                    return [4 /*yield*/, updateAuthTokenRequest(appConfig)];
                case 4:
                    entry = _a.sent();
                    return [3 /*break*/, 2];
                case 5:
                    authToken = entry.authToken;
                    if (authToken.requestStatus === 0 /* NOT_STARTED */) {
                        throw ERROR_FACTORY.create("generate-token-failed" /* GENERATE_TOKEN_FAILED */);
                    }
                    else {
                        return [2 /*return*/, authToken];
                    }
                    return [2 /*return*/];
            }
        });
    });
}
/**
 * Called only if there is a GenerateAuthToken request in progress.
 *
 * Updates the InstallationEntry in the DB based on the status of the
 * GenerateAuthToken request.
 *
 * Returns the updated InstallationEntry.
 */
function updateAuthTokenRequest(appConfig) {
    return update(appConfig, function (oldEntry) {
        if (!isEntryRegistered(oldEntry)) {
            throw ERROR_FACTORY.create("not-registered" /* NOT_REGISTERED */);
        }
        var oldAuthToken = oldEntry.authToken;
        if (hasAuthTokenRequestTimedOut(oldAuthToken)) {
            return tslib_1.__assign({}, oldEntry, { authToken: { requestStatus: 0 /* NOT_STARTED */ } });
        }
        return oldEntry;
    });
}
function fetchAuthTokenFromServer(appConfig, installationEntry) {
    return tslib_1.__awaiter(this, void 0, void 0, function () {
        var authToken, updatedInstallationEntry, e_1, updatedInstallationEntry;
        return tslib_1.__generator(this, function (_a) {
            switch (_a.label) {
                case 0:
                    _a.trys.push([0, 3, , 8]);
                    return [4 /*yield*/, generateAuthToken(appConfig, installationEntry)];
                case 1:
                    authToken = _a.sent();
                    updatedInstallationEntry = tslib_1.__assign({}, installationEntry, { authToken: authToken });
                    return [4 /*yield*/, set(appConfig, updatedInstallationEntry)];
                case 2:
                    _a.sent();
                    return [2 /*return*/, authToken];
                case 3:
                    e_1 = _a.sent();
                    if (!(isServerError(e_1) && (e_1.serverCode === 401 || e_1.serverCode === 404))) return [3 /*break*/, 5];
                    // Server returned a "FID not found" or a "Invalid authentication" error.
                    // Generate a new ID next time.
                    return [4 /*yield*/, remove(appConfig)];
                case 4:
                    // Server returned a "FID not found" or a "Invalid authentication" error.
                    // Generate a new ID next time.
                    _a.sent();
                    return [3 /*break*/, 7];
                case 5:
                    updatedInstallationEntry = tslib_1.__assign({}, installationEntry, { authToken: { requestStatus: 0 /* NOT_STARTED */ } });
                    return [4 /*yield*/, set(appConfig, updatedInstallationEntry)];
                case 6:
                    _a.sent();
                    _a.label = 7;
                case 7: throw e_1;
                case 8: return [2 /*return*/];
            }
        });
    });
}
function isEntryRegistered(installationEntry) {
    return (installationEntry !== undefined &&
        installationEntry.registrationStatus === 2 /* COMPLETED */);
}
function isAuthTokenValid(authToken) {
    return (authToken.requestStatus === 2 /* COMPLETED */ &&
        !isAuthTokenExpired(authToken));
}
function isAuthTokenExpired(authToken) {
    var now = Date.now();
    return (now < authToken.creationTime ||
        authToken.creationTime + authToken.expiresIn < now + TOKEN_EXPIRATION_BUFFER);
}
/** Returns an updated InstallationEntry with an InProgressAuthToken. */
function makeAuthTokenRequestInProgressEntry(oldEntry) {
    var inProgressAuthToken = {
        requestStatus: 1 /* IN_PROGRESS */,
        requestTime: Date.now()
    };
    return tslib_1.__assign({}, oldEntry, { authToken: inProgressAuthToken });
}
function hasAuthTokenRequestTimedOut(authToken) {
    return (authToken.requestStatus === 1 /* IN_PROGRESS */ &&
        authToken.requestTime + PENDING_TIMEOUT_MS < Date.now());
}

/**
 * @license
 * Copyright 2019 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.
 */
function getId(app) {
    return tslib_1.__awaiter(this, void 0, void 0, function () {
        var appConfig, _a, installationEntry, registrationPromise;
        return tslib_1.__generator(this, function (_b) {
            switch (_b.label) {
                case 0:
                    appConfig = extractAppConfig(app);
                    return [4 /*yield*/, getInstallationEntry(appConfig)];
                case 1:
                    _a = _b.sent(), installationEntry = _a.installationEntry, registrationPromise = _a.registrationPromise;
                    if (registrationPromise) {
                        // Suppress registration errors as they are not a problem for getId.
                        registrationPromise.catch(function () { });
                    }
                    if (installationEntry.registrationStatus === 2 /* COMPLETED */) {
                        // If the installation is already registered, update the authentication
                        // token if needed. Suppress errors as they are not relevant to getId.
                        refreshAuthToken(appConfig).catch(function () { });
                    }
                    return [2 /*return*/, installationEntry.fid];
            }
        });
    });
}

/**
 * @license
 * Copyright 2019 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.
 */
function getToken(app) {
    return tslib_1.__awaiter(this, void 0, void 0, function () {
        var appConfig;
        return tslib_1.__generator(this, function (_a) {
            switch (_a.label) {
                case 0:
                    appConfig = extractAppConfig(app);
                    return [4 /*yield*/, completeInstallationRegistration(appConfig)];
                case 1:
                    _a.sent();
                    // At this point we either have a Registered Installation in the DB, or we've
                    // already thrown an error.
                    return [2 /*return*/, refreshAuthToken(appConfig)];
            }
        });
    });
}
function completeInstallationRegistration(appConfig) {
    return tslib_1.__awaiter(this, void 0, void 0, function () {
        var _a, installationEntry, registrationPromise;
        return tslib_1.__generator(this, function (_b) {
            switch (_b.label) {
                case 0: return [4 /*yield*/, getInstallationEntry(appConfig)];
                case 1:
                    _a = _b.sent(), installationEntry = _a.installationEntry, registrationPromise = _a.registrationPromise;
                    if (!registrationPromise) return [3 /*break*/, 3];
                    // A createInstallation request is in progress. Wait until it finishes.
                    return [4 /*yield*/, registrationPromise];
                case 2:
                    // A createInstallation request is in progress. Wait until it finishes.
                    _b.sent();
                    return [3 /*break*/, 4];
                case 3:
                    if (installationEntry.registrationStatus !== 2 /* COMPLETED */) {
                        // Installation ID can't be registered.
                        throw ERROR_FACTORY.create("create-installation-failed" /* CREATE_INSTALLATION_FAILED */);
                    }
                    _b.label = 4;
                case 4: return [2 /*return*/];
            }
        });
    });
}

/**
 * @license
 * Copyright 2019 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.
 */
function deleteInstallation(appConfig, installationEntry) {
    return tslib_1.__awaiter(this, void 0, void 0, function () {
        var endpoint, headers, request, response;
        return tslib_1.__generator(this, function (_a) {
            switch (_a.label) {
                case 0:
                    endpoint = getDeleteEndpoint(appConfig, installationEntry);
                    headers = getHeadersWithAuth(appConfig, installationEntry);
                    request = {
                        method: 'DELETE',
                        headers: headers
                    };
                    return [4 /*yield*/, retryIfServerError(function () { return fetch(endpoint, request); })];
                case 1:
                    response = _a.sent();
                    if (!!response.ok) return [3 /*break*/, 3];
                    return [4 /*yield*/, getErrorFromResponse('Delete Installation', response)];
                case 2: throw _a.sent();
                case 3: return [2 /*return*/];
            }
        });
    });
}
function getDeleteEndpoint(appConfig, _a) {
    var fid = _a.fid;
    return getInstallationsEndpoint(appConfig) + "/" + fid;
}

/**
 * @license
 * Copyright 2019 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.
 */
function deleteInstallation$1(app) {
    return tslib_1.__awaiter(this, void 0, void 0, function () {
        var appConfig, entry;
        return tslib_1.__generator(this, function (_a) {
            switch (_a.label) {
                case 0:
                    appConfig = extractAppConfig(app);
                    return [4 /*yield*/, update(appConfig, function (oldEntry) {
                            if (oldEntry && oldEntry.registrationStatus === 0 /* NOT_STARTED */) {
                                // Delete the unregistered entry without sending a deleteInstallation request.
                                return undefined;
                            }
                            return oldEntry;
                        })];
                case 1:
                    entry = _a.sent();
                    if (!entry) return [3 /*break*/, 6];
                    if (!(entry.registrationStatus === 1 /* IN_PROGRESS */)) return [3 /*break*/, 2];
                    // Can't delete while trying to register.
                    throw ERROR_FACTORY.create("delete-pending-registration" /* DELETE_PENDING_REGISTRATION */);
                case 2:
                    if (!(entry.registrationStatus === 2 /* COMPLETED */)) return [3 /*break*/, 6];
                    if (!!navigator.onLine) return [3 /*break*/, 3];
                    throw ERROR_FACTORY.create("app-offline" /* APP_OFFLINE */);
                case 3: return [4 /*yield*/, deleteInstallation(appConfig, entry)];
                case 4:
                    _a.sent();
                    return [4 /*yield*/, remove(appConfig)];
                case 5:
                    _a.sent();
                    _a.label = 6;
                case 6: return [2 /*return*/];
            }
        });
    });
}

/**
 * @license
 * Copyright 2019 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.
 */
function registerInstallations(instance) {
    var installationsName = 'installations';
    var factoryMethod = function (app) {
        // Throws if app isn't configured properly.
        extractAppConfig(app);
        return {
            app: app,
            getId: function () { return getId(app); },
            getToken: function () { return getToken(app); },
            delete: function () { return deleteInstallation$1(app); }
        };
    };
    instance.INTERNAL.registerService(installationsName, factoryMethod);
}
registerInstallations(firebase);

exports.registerInstallations = registerInstallations;
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