(function () {
    var src = new URL (document.currentScript.getAttribute ('src'))
    var origin = "https://widget.x.cloud.audaris.icu"

    var clientId = parseInt (src.searchParams.get ('cid'), 10)
    var useShadowDom = src.searchParams.has ('shadow') ? !!src.searchParams.get ('shadow') : true

    fetch (origin + '/assets-manifest.json')
        .then (response => response.json ())
        .then (manifest => initWidget (clientId, useShadowDom, manifest.entrypoints.app))

    function initWidget (clientId, useShadowDom, entrypoint) {
        var elem = document.getElementById ('audaris-widget')

        if (elem.attachShadow && useShadowDom) {
            var shadow = elem.attachShadow ({ mode: 'open' })
            elem = document.createElement ('div')
            shadow.appendChild (elem)
            addStyles (shadow, entrypoint.css)
        }

        addStyles (document.head, entrypoint.css)

        var count = entrypoint.js.length
        addScripts (document.body, entrypoint.js, function () {
            count -= 1
            if (count === 0) {
                window.AudarisWidget.initShowroom ({
                    node: elem,
                    clientId: clientId
                })
            }
        })
    }

    function addStyles (parent, srcs) {
        for (var i = 0; i < srcs.length; ++i) {
            addStyle (parent, srcs[i])
        }
    }

    function addScripts (parent, srcs, callback) {
        for (var i = 0; i < srcs.length; ++i) {
            addScript (parent, srcs[i], callback)
        }
    }

    function addScript (parent, src, callback) {
        var tag = document.createElement ('script')
        tag.setAttribute ('src', src)
        tag.setAttribute ('charset', 'utf-8')
        tag.onload = callback
        parent.appendChild (tag)
    }

    function addStyle (parent, src) {
        var tag = document.createElement ('link')
        tag.setAttribute ('rel', 'stylesheet')
        tag.setAttribute ('type', 'text/css')
        tag.setAttribute ('href', src)
        tag.setAttribute ('charset', 'utf-8')
        parent.appendChild (tag)
    }
}) ()