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import ActionCable from "./index"
// Collection class for creating (and internally managing) channel subscriptions. The only method intended to be triggered by the user
// us ActionCable.Subscriptions#create, and it should be called through the consumer like so:
//
// App = {}
// App.cable = ActionCable.createConsumer("ws://example.com/accounts/1")
// App.appearance = App.cable.subscriptions.create("AppearanceChannel")
//
// For more details on how you'd configure an actual channel subscription, see ActionCable.Subscription.
export default class Subscriptions {
constructor(consumer) {
this.consumer = consumer
this.subscriptions = []
}
create(channelName, mixin) {
const channel = channelName
const params = typeof channel === "object" ? channel : {channel}
const subscription = new ActionCable.Subscription(this.consumer, params, mixin)
return this.add(subscription)
}
// Private
add(subscription) {
this.subscriptions.push(subscription)
this.consumer.ensureActiveConnection()
this.notify(subscription, "initialized")
this.sendCommand(subscription, "subscribe")
return subscription
}
remove(subscription) {
this.forget(subscription)
if (!this.findAll(subscription.identifier).length) {
this.sendCommand(subscription, "unsubscribe")
}
return subscription
}
reject(identifier) {
return this.findAll(identifier).map((subscription) => {
this.forget(subscription)
this.notify(subscription, "rejected")
return subscription
})
}
forget(subscription) {
this.subscriptions = (this.subscriptions.filter((s) => s !== subscription))
return subscription
}
findAll(identifier) {
return this.subscriptions.filter((s) => s.identifier === identifier)
}
reload() {
return this.subscriptions.map((subscription) =>
this.sendCommand(subscription, "subscribe"))
}
notifyAll(callbackName, ...args) {
return this.subscriptions.map((subscription) =>
this.notify(subscription, callbackName, ...args))
}
notify(subscription, callbackName, ...args) {
let subscriptions
if (typeof subscription === "string") {
subscriptions = this.findAll(subscription)
} else {
subscriptions = [subscription]
}
return subscriptions.map((subscription) =>
(typeof subscription[callbackName] === "function" ? subscription[callbackName](...args) : undefined))
}
sendCommand(subscription, command) {
const {identifier} = subscription
return this.consumer.send({command, identifier})
}
}
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