This repository has been archived by the owner on Oct 18, 2024. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 2
/
index.ts
130 lines (102 loc) · 3.35 KB
/
index.ts
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
import { Group, Participant } from '../../common/types/participant.types';
import { Logger, Observer } from '../../common/utils';
import config from '../../services/config';
import { EventBus } from '../../services/event-bus';
import { AblyRealtimeService } from '../../services/realtime';
import { DefaultAttachComponentOptions } from './types';
export abstract class BaseComponent {
public abstract name: string;
protected abstract logger: Logger;
private observers: Record<string, Observer> = {};
protected localParticipant: Participant;
protected group: Group;
protected realtime: AblyRealtimeService;
protected eventBus: EventBus;
protected isAttached = false;
/**
* @function attach
* @description attach component
* @returns {void}
*/
public attach = (params: DefaultAttachComponentOptions): void => {
if (Object.values(params).includes(null) || Object.values(params).includes(undefined)) {
const message = `${this.name} @ attach - params are required`;
this.logger.log(message);
throw new Error(message);
}
const { realtime, localParticipant, group, config: globalConfig, eventBus } = params;
config.setConfig(globalConfig);
this.realtime = realtime;
this.localParticipant = localParticipant;
this.group = group;
this.eventBus = eventBus;
this.isAttached = true;
if (!this.realtime.isJoinedRoom) {
this.logger.log(`${this.name} @ attach - not joined yet`);
setTimeout(() => {
this.logger.log(`${this.name} @ attach - retrying`);
this.attach(params);
}, 1000);
return;
}
this.logger.log(`${this.name} @ attached`);
this.start();
};
/*
* @function detach
* @description detach component
* @returns {void}
* */
public detach = (): void => {
if (!this.isAttached) {
this.logger.log(`${this.name} @ detach - component is not attached}`);
return;
}
this.logger.log('detached');
this.destroy();
this.realtime = undefined;
this.localParticipant = undefined;
this.isAttached = false;
Object.keys(this.observers).forEach((type) => this.unsubscribe(type));
};
/**
* @function subscribe
* @description Subscribe to an event
* @param type - event type
* @param listener - event callback
* @returns {void}
*/
public subscribe = (type: string, listener: Function): void => {
this.logger.log(`subscribed to ${type} event`);
if (!this.observers[type]) {
this.observers[type] = new Observer({ logger: this.logger });
}
this.observers[type].subscribe(listener);
};
/**
* @function unsubscribe
* @description Unsubscribe from an event
* @param type - event type
* @returns {void}
*/
public unsubscribe = (type: string): void => {
this.logger.log(`unsubscribed from ${type} event`);
if (!this.observers[type]) return;
this.observers[type].reset();
delete this.observers[type];
};
/**
* @function publish
* @description Publish an event to client
* @param type - event type
* @param data - event data
* @returns {void}
*/
protected publish = (type: string, data?: unknown): void => {
const hasListenerRegistered = type in this.observers;
if (!hasListenerRegistered) return;
this.observers[type].publish(data);
};
protected abstract destroy(): void;
protected abstract start(): void;
}