121 lines
3.5 KiB
TypeScript
121 lines
3.5 KiB
TypeScript
// Copyright 2020-2021 Signal Messenger, LLC
|
|
// SPDX-License-Identifier: AGPL-3.0-only
|
|
|
|
import { get, throttle } from 'lodash';
|
|
import { WebAPIType } from './textsecure/WebAPI';
|
|
|
|
export type ConfigKeyType =
|
|
| 'desktop.clientExpiration'
|
|
| 'desktop.disableGV1'
|
|
| 'desktop.groupCalling'
|
|
| 'desktop.gv2'
|
|
| 'desktop.mandatoryProfileSharing'
|
|
| 'desktop.messageRequests'
|
|
| 'desktop.storage'
|
|
| 'desktop.storageWrite3'
|
|
| 'global.groupsv2.maxGroupSize'
|
|
| 'global.groupsv2.groupSizeHardLimit';
|
|
type ConfigValueType = {
|
|
name: ConfigKeyType;
|
|
enabled: boolean;
|
|
enabledAt?: number;
|
|
value?: unknown;
|
|
};
|
|
type ConfigMapType = { [key: string]: ConfigValueType };
|
|
type ConfigListenerType = (value: ConfigValueType) => unknown;
|
|
type ConfigListenersMapType = {
|
|
[key: string]: Array<ConfigListenerType>;
|
|
};
|
|
|
|
function getServer(): WebAPIType {
|
|
const OLD_USERNAME = window.storage.get<string>('number_id');
|
|
const USERNAME = window.storage.get<string>('uuid_id');
|
|
const PASSWORD = window.storage.get<string>('password');
|
|
|
|
return window.WebAPI.connect({
|
|
username: (USERNAME || OLD_USERNAME) as string,
|
|
password: PASSWORD as string,
|
|
});
|
|
}
|
|
|
|
let config: ConfigMapType = {};
|
|
const listeners: ConfigListenersMapType = {};
|
|
|
|
export async function initRemoteConfig(): Promise<void> {
|
|
config = window.storage.get('remoteConfig') || {};
|
|
await maybeRefreshRemoteConfig();
|
|
}
|
|
|
|
export function onChange(
|
|
key: ConfigKeyType,
|
|
fn: ConfigListenerType
|
|
): () => void {
|
|
const keyListeners: Array<ConfigListenerType> = get(listeners, key, []);
|
|
keyListeners.push(fn);
|
|
listeners[key] = keyListeners;
|
|
|
|
return () => {
|
|
listeners[key] = listeners[key].filter(l => l !== fn);
|
|
};
|
|
}
|
|
|
|
export const refreshRemoteConfig = async (): Promise<void> => {
|
|
const now = Date.now();
|
|
const server = getServer();
|
|
const newConfig = await server.getConfig();
|
|
|
|
// Process new configuration in light of the old configuration
|
|
// The old configuration is not set as the initial value in reduce because
|
|
// flags may have been deleted
|
|
const oldConfig = config;
|
|
config = newConfig.reduce((acc, { name, enabled, value }) => {
|
|
const previouslyEnabled: boolean = get(oldConfig, [name, 'enabled'], false);
|
|
const previousValue: unknown = get(oldConfig, [name, 'value'], undefined);
|
|
// If a flag was previously not enabled and is now enabled,
|
|
// record the time it was enabled
|
|
const enabledAt: number | undefined =
|
|
previouslyEnabled && enabled ? now : get(oldConfig, [name, 'enabledAt']);
|
|
|
|
const configValue = {
|
|
name: name as ConfigKeyType,
|
|
enabled,
|
|
enabledAt,
|
|
value,
|
|
};
|
|
|
|
const hasChanged =
|
|
previouslyEnabled !== enabled || previousValue !== configValue.value;
|
|
|
|
// If enablement changes at all, notify listeners
|
|
const currentListeners = listeners[name] || [];
|
|
if (hasChanged) {
|
|
window.log.info(`Remote Config: Flag ${name} has changed`);
|
|
currentListeners.forEach(listener => {
|
|
listener(configValue);
|
|
});
|
|
}
|
|
|
|
// Return new configuration object
|
|
return {
|
|
...acc,
|
|
[name]: configValue,
|
|
};
|
|
}, {});
|
|
|
|
window.storage.put('remoteConfig', config);
|
|
};
|
|
|
|
export const maybeRefreshRemoteConfig = throttle(
|
|
refreshRemoteConfig,
|
|
// Only fetch remote configuration if the last fetch was more than two hours ago
|
|
2 * 60 * 60 * 1000,
|
|
{ trailing: false }
|
|
);
|
|
|
|
export function isEnabled(name: ConfigKeyType): boolean {
|
|
return get(config, [name, 'enabled'], false);
|
|
}
|
|
|
|
export function getValue(name: ConfigKeyType): string | undefined {
|
|
return get(config, [name, 'value'], undefined);
|
|
}
|