import { GoogleAuthOptions } from "google-auth-library";
export interface Interval {
    startTime: string;
    endTime: string;
}
export interface TimeIntervalMetric {
    interval: Interval;
    count: number;
    [key: string]: any;
}
export type DateTimeStringISO = `${number}-${number}-${number}T${number}:${number}:${number}Z`;
interface FirestoreMetricsArgs extends Omit<GoogleAuthOptions, "scopes"> {
}
export declare class FirestoreMetrics {
    projectId: string | null;
    private accessToken;
    private googleAuth;
    private googleAuthArgs;
    private baseUrl;
    private scopes;
    constructor(params: FirestoreMetricsArgs);
    /**
     * Helper function to compose the metric type filter.
     * @param {string} metricName Name of the metric type.
     * @returns {string} A string filter to be passed to the request.
     */
    private metricFilter;
    /**
     * Creates a Google Auth instance if null.
     */
    private createGoogleAuthInstance;
    /**
     * Gets the project ID and sets its value if it is still null.
     */
    getProjectId(): Promise<string>;
    /**
     * Generates an access token.
     * @param {boolean} overwriteExisting If true, overwrites the existing access token.
     * @returns {Promise<string>} Access token used to authenticate requests.
     */
    generateToken(overwriteExisting?: boolean): Promise<string>;
    /**
     * Sets the access token.
     * @param {boolean} accessToken Value of the new access token.
     */
    setAccessToken(accessToken: string): void;
    /**
     * Makes a request to the Cloud monitoring API.
     * @param {string} filter A monitoring filter that specifies which time series should be returned.
     * @param {string} startTime The beginning of the time interval.
     * @param {string} endTime The end of the time interval.
     * @returns
     */
    private makeRequest;
    /**
     * Check if the list contains an the object.
     * @param obj Object.
     * @param list List of objects.
     * @returns True if the list contains the object.
     */
    private containsObject;
    /**
     * Removes keys in an object with null, undefined, etc. value.
     * @param obj Object.
     * @param args Additional values to be removes.
     * @returns An object with keys with invalid values removed.
     */
    private cleanObject;
    /**
     * Cleans/formats the response into something more understandable.
     * @param {Response} response Fetch response.
     * @returns {Promise<Array<TimeIntervalMetric>>} An array of time intervals and count of transactions for that time.
     */
    private cleanResponseTimeSeries;
    /**
     * Get Firestore read count metrics.
     * @param {DateTimeStringISO} startTime The beginning of the time interval.
     * @param {DateTimeStringISO} endTime The end of the time interval.
     * @param {string?} accessToken Access token used to authenticate.
     * @returns {Promise<Array<TimeIntervalMetric>>}
     */
    getReadCount(startTime: DateTimeStringISO, endTime: DateTimeStringISO, accessToken?: string | null): Promise<Array<TimeIntervalMetric>>;
    /**
     * Get Firestore write count metrics.
     * @param {DateTimeStringISO} startTime The beginning of the time interval.
     * @param {DateTimeStringISO} endTime The end of the time interval.
     * @param {string?} accessToken Access token used to authenticate.
     * @returns {Promise<Array<TimeIntervalMetric>>}
     */
    getWriteCount(startTime: DateTimeStringISO, endTime: DateTimeStringISO, accessToken?: string | null): Promise<Array<TimeIntervalMetric>>;
    /**
     * Get Firestore delete count metrics.
     * @param {DateTimeStringISO} startTime The beginning of the time interval.
     * @param {DateTimeStringISO} endTime The end of the time interval.
     * @param {string?} accessToken Access token used to authenticate.
     * @returns {Promise<Array<TimeIntervalMetric>>}
     */
    getDeleteCount(startTime: DateTimeStringISO, endTime: DateTimeStringISO, accessToken?: string | null): Promise<Array<TimeIntervalMetric>>;
    /**
     * Get Firestore snapshot listeners count metrics.
     * @param {DateTimeStringISO} startTime The beginning of the time interval.
     * @param {DateTimeStringISO} endTime The end of the time interval.
     * @param {string?} accessToken Access token used to authenticate.
     * @returns {Promise<Array<TimeIntervalMetric>>}
     */
    getSnapshotListeners(startTime: DateTimeStringISO, endTime: DateTimeStringISO, accessToken?: string | null): Promise<Array<TimeIntervalMetric>>;
    /**
     * Get Firestore active connections count metrics.
     * @param {DateTimeStringISO} startTime The beginning of the time interval.
     * @param {DateTimeStringISO} endTime The end of the time interval.
     * @param {string?} accessToken Access token used to authenticate.
     * @returns {Promise<Array<TimeIntervalMetric>>}
     */
    getActiveConnections(startTime: DateTimeStringISO, endTime: DateTimeStringISO, accessToken?: string | null): Promise<Array<TimeIntervalMetric>>;
    /**
     * Get Firestore documents deleted by TTL services count.
     * @param {DateTimeStringISO} startTime The beginning of the time interval.
     * @param {DateTimeStringISO} endTime The end of the time interval.
     * @param {string?} accessToken Access token used to authenticate.
     * @returns {Promise<Array<TimeIntervalMetric>>}
     */
    getTTLDeletionCount(startTime: DateTimeStringISO, endTime: DateTimeStringISO, accessToken?: string | null): Promise<Array<TimeIntervalMetric>>;
    /**
     * Get Firestore Security Rule evaluations count performed in response to write read requests.
     * @param {DateTimeStringISO} startTime The beginning of the time interval.
     * @param {DateTimeStringISO} endTime The end of the time interval.
     * @param {string?} accessToken Access token used to authenticate.
     * @returns {Promise<Array<TimeIntervalMetric>>}
     */
    getRulesEvaluationCount(startTime: DateTimeStringISO, endTime: DateTimeStringISO, accessToken?: string | null): Promise<Array<TimeIntervalMetric>>;
    /**
     * Get Firestore API calls count.
     * @param {DateTimeStringISO} startTime The beginning of the time interval.
     * @param {DateTimeStringISO} endTime The end of the time interval.
     * @param {string?} accessToken Access token used to authenticate.
     * @returns {Promise<Array<TimeIntervalMetric>>}
     */
    getRequestCount(startTime: DateTimeStringISO, endTime: DateTimeStringISO, accessToken?: string | null): Promise<Array<TimeIntervalMetric>>;
}
export {};