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event-description.ts
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event-description.ts
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import type {
CollectionEvent,
CollectionCallback,
} from "../chip-types/collection.js";
import type { App, Collection } from "../main.js";
import type Context from "../context.js";
import * as cron from "cron";
export type RefreshCallbackArguments = [context: Context, ...args: unknown[]];
export type ResourceIDGetter<
A extends RefreshCallbackArguments = RefreshCallbackArguments
> = (arg: A) => Promise<string[]>;
export type RefreshConditionCallback<
A extends RefreshCallbackArguments = RefreshCallbackArguments
> = (arg: A) => Promise<void>;
export abstract class RefreshCondition<
CallbackArguments extends RefreshCallbackArguments = RefreshCallbackArguments
> {
constructor(
public resource_id_getter: ResourceIDGetter<CallbackArguments>
) {}
abstract attachTo(
app: App,
collection: Collection, // refresh conditions are always used in some kind of automatically refreshing field types. This stores the collection to which that refreshing field belongs to
callback: RefreshConditionCallback<CallbackArguments>
): void;
}
export type CollectionRefreshConditionArgs = Parameters<CollectionCallback>[0];
export class CollectionRefreshCondition extends RefreshCondition<CollectionRefreshConditionArgs> {
public event_names: CollectionEvent[];
constructor(
public collection_name: string,
event_name: CollectionEvent | CollectionEvent[],
public resource_id_getter: ResourceIDGetter<CollectionRefreshConditionArgs>
) {
super(resource_id_getter);
if (!Array.isArray(event_name)) {
event_name = [event_name];
}
this.event_names = event_name;
}
attachTo(
app: App,
_: unknown,
callback: RefreshConditionCallback<CollectionRefreshConditionArgs>
): void {
for (const event_name of this.event_names) {
if (!app.collections[this.collection_name]) {
throw new Error(
`Collection '${this.collection_name}' not found, perhaps a typo?`
);
}
app.collections[this.collection_name].on(event_name, callback);
}
}
}
export class ClockEventDescription extends RefreshCondition<[Context]> {
constructor(
public cron_description: string,
public resource_id_getter: ResourceIDGetter<[Context]>,
public make_context: (app: App) => Context
) {
super(resource_id_getter);
}
attachTo(
app: App,
_: Collection,
callback: RefreshConditionCallback<[Context]>
): void {
const job = new cron.CronJob(
this.cron_description,
() => {
app.Logger.debug("CRON", "TICK" + this.cron_description);
void callback([this.make_context(app)]);
},
null,
true
);
app.on("stopping", () => {
job.stop();
});
}
}

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event-description.ts (2 KB)

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