// common.ts - common stuff like config and app setup

import { domain } from '@params'

export type Config = {
	domain: string
	itemid: string
	sid: string
	iid: string
	apiurl: string
	pollurl: string
}

export function config (api): Config {
	const pu = api.polling ? `${api.path}/${api.polling.msgbase.join('/')}` : ''
	return { 
		domain: domain,
		itemid: location.hash.substring(1),
		sid: getSid(),
		iid: createRandString(1),
		apiurl: api.path, 
		pollurl: pu, 
	}
}

// generic App (appdata) methods

export function register(name: string, comp: any) {
	this.components[name] = comp
}

// common functions

export function handle(app, msg) {
	const [ domain, action, class_, item ] = msg.path.split('/')
	const comp = app.components[class_ || 'data']
	if (domain && domain !== comp.domain) {
		return
	}
	if (comp) {
		comp.handle(domain, action, class_, item, msg.payload)
	}
}

export function createRandString(size: number): string {
	const arr = new Uint32Array(size)
	crypto.getRandomValues(arr)
	const result: string[] = []
	arr.forEach((x) => result.push(x.toString(36)))
	return result.join('')
}

function getSid(): string {
	const sid_key = 'api.sessionid'
	let sid = localStorage.getItem(sid_key)
	if (!sid) {
		sid = createRandString(2)
		localStorage.setItem(sid_key, sid)
	}
	return sid
}

//console.log("sid: ", getSid())
// TODO: clear sid - when?
//localStorage.setItem('api.sessionid', '')

export const sleep = (delay: number) => new Promise(r => setTimeout(r, delay))