Carbon/src/js/events/membership.js

const {MatrixEvent} = require("./event")
const {ejs} = require("../basic")

class MembershipEvent extends MatrixEvent {
	static canRender(eventData) {
		return eventData.type === "m.room.member"
	}

	renderText(text) {
		this.clearChildren()
		this.child(
			ejs("i").text(text)
		)
		super.render()
	}
}


class JoinedEvent extends MembershipEvent {
	static canRender(eventData) {
		return super.canRender(eventData) && eventData.content.membership === "join"
	}

	render() {
		this.renderText("joined the room")
	}
}

class InvitedEvent extends MembershipEvent {
	static canRender(eventData) {
		return super.canRender(eventData) && eventData.content.membership === "invite"
	}

	render() {
		this.renderText(`invited ${this.data.content.displayname}`)
	}
}

class LeaveEvent extends MembershipEvent {
	static canRender(eventData) {
		return super.canRender(eventData) && eventData.content.membership === "leave"
	}

	render() {
		this.renderText("left the room")
	}
}

class UnknownMembership extends MembershipEvent {
	render() {
		this.renderText("unknown membership event")
	}
}

module.exports = [JoinedEvent, InvitedEvent, LeaveEvent, UnknownMembership]