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import moment from 'moment';
import {RootState} from '../store/rootReducer';
import {ChannelGroupedType} from '../types';
/**
* Finds the difference in time in minutes
* @param lastActive given time e.g. "2021-04-08T19:07:09.361300983Z"
* @returns diff in minutes
*/
const _diffInMinutes = (lastActive: string | undefined) => {
if (!lastActive) {
return undefined;
}
return moment().diff(moment(lastActive), 'minutes');
};
/**
* Formats the last activity status.
* - "Active now" (≤ 5 minutes)
* - "Seen X minutes ago" (5 > x ≥ 59 minutes)
* - "Seen X hours ago" (x = [1, 2])
* - "Offline"
* @param lastActive given time e.g. "2021-04-08T19:07:09.361300983Z"
* @returns
*/
export const formatLastSeenText = (lastActive: string | undefined) => {
const diff = _diffInMinutes(lastActive);
if (!diff) {
return 'Offline';
}
if (diff <= 5) {
return 'Active now';
}
if (diff <= 59) {
return `Seen ${diff} minutes ago`;
}
if (diff <= 180) {
const hours = Math.floor(diff / 60);
return `Seen ${hours} hours ago`;
}
return 'Offline';
};
/**
* Checks if a lastActive timestamp is considered Online or not.
*
* A user is online if last active is ≤ 15 minutes.
*
* @param lastActive given time e.g. "2021-04-08T19:07:09.361300983Z"
* @returns True if active
*/
export const isOnline = (lastActive: string | undefined) => {
if (!lastActive) {
return false;
}
const diff = _diffInMinutes(lastActive);
if (!diff) {
return false;
}
return diff <= 15;
};
/**
* Gets the other member in the channel.
* @param channel the current chat channel
* @param state the current redux state
* @returns other member or undefined
*/
export const getMember = (
channel: ChannelGroupedType | undefined,
state: RootState,
) => {
if (!channel) {
return undefined;
}
const loggedInUserId = state.user.user.userId;
const otherMembers = channel
? Object.values(channel.state.members).filter(
(member) => member.user?.id !== loggedInUserId,
)
: [];
return otherMembers.length === 1 ? otherMembers[0] : undefined;
};
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