import { NamedNode, sym } from 'rdflib'

import * as debug from '../util/debug'

/**

* find a user or app's context as set in window.SolidAppContext

* this is a const, not a function, because we have problems to jest mock it otherwise

* see: https://github.com/facebook/jest/issues/936#issuecomment-545080082 for more

* @return {any} - an appContext object

*/

export const appContext = ():any => {

let { SolidAppContext }: any = window

SolidAppContext ||= {}

SolidAppContext.viewingNoAuthPage = false

if (SolidAppContext.noAuth && window.document) {

const currentPage = window.document.location.href

if (currentPage.startsWith(SolidAppContext.noAuth)) {

SolidAppContext.viewingNoAuthPage = true

const params = new URLSearchParams(window.document.location.search)

if (params) {

let viewedPage = SolidAppContext.viewedPage = params.get('uri') || null

if (viewedPage) {

viewedPage = decodeURI(viewedPage)

if (!viewedPage.startsWith(SolidAppContext.noAuth)) {

const ary = viewedPage.split(/\//)

SolidAppContext.idp = ary[0] + '//' + ary[2]

SolidAppContext.viewingNoAuthPage = false

}

}

}

}

}

return SolidAppContext

}

/**

* Returns `sym($SolidTestEnvironment.username)` if

* `$SolidTestEnvironment.username` is defined as a global

* or

* returns testID defined in the HTML page

* @returns {NamedNode|null}

*/

export function offlineTestID (): NamedNode | null {

const { $SolidTestEnvironment }: any = window

if (

typeof $SolidTestEnvironment !== 'undefined' &&

$SolidTestEnvironment.username

) {

// Test setup

debug.log('Assuming the user is ' + $SolidTestEnvironment.username)

return sym($SolidTestEnvironment.username)

}

// hack that makes SolidOS work in offline mode by adding the webId directly in html

// example usage: https://github.com/solidos/mashlib/blob/29b8b53c46bf02e0e219f0bacd51b0e9951001dd/test/contact/local.html#L37

if (

typeof document !== 'undefined' &&

document.location &&

('' + document.location).slice(0, 16) === 'http://localhost'

) {

const div = document.getElementById('appTarget')

if (!div) return null

const id = div.getAttribute('testID')

if (!id) return null

debug.log('Assuming user is ' + id)

return sym(id)

}

return null

}