// @flow

import { JitsiRecordingConstants } from '../base/lib-jitsi-meet';

/**
 * Searches in the passed in redux state for an active recording session of the
 * passed in mode.
 *
 * @param {Object} state - The redux state to search in.
 * @param {string} mode - Find an active recording session of the given mode.
 * @returns {Object|undefined}
 */
export function getActiveSession(state: Object, mode: string) {
    const { sessionDatas } = state['features/recording'];
    const { status: statusConstants } = JitsiRecordingConstants;

    return sessionDatas.find(sessionData => sessionData.mode === mode
        && (sessionData.status === statusConstants.ON
            || sessionData.status === statusConstants.PENDING));
}

/**
 * Returns an estimated recording duration based on the size of the video file
 * in MB. The estimate is calculated under the assumption that 1 min of recorded
 * video needs 10MB of storage on avarage.
 *
 * @param {number} size - The size in MB of the recorded video.
 * @returns {number} - The estimated duration in minutes.
 */
export function getRecordingDurationEstimation(size: ?number) {
    return Math.floor((size || 0) / 10);
}

/**
 * Searches in the passed in redux state for a recording session that matches
 * the passed in recording session ID.
 *
 * @param {Object} state - The redux state to search in.
 * @param {string} id - The ID of the recording session to find.
 * @returns {Object|undefined}
 */
export function getSessionById(state: Object, id: string) {
    return state['features/recording'].sessionDatas.find(
        sessionData => sessionData.id === id);
}