class XestoSubject {

    constructor() {
        this.observers = [];
    }

    subscribe(fn) {
        this.observers.push(fn)
    }

    unsubscribe(fnToRemove) {
        this.observers = this.observers.filter( fn => {
            if (fn != fnToRemove)
                return fn
        })
    }

    fire(arg0=null) {
        this.observers.forEach( fn => {
            fn(arg0)
        })
    }
}


class XestoWidgetInterface {

    constructor() {
        this.listeners = []
        this.readyEvent = new XestoSubject()
        this.recommendationEvent = new XestoSubject()
        this.profileSelectedEvent = new XestoSubject()
        this.profileLinkEvent = new XestoSubject()

    }

    isReady() {
        return this.ready
    }

    showWidget() {
        let container = document.getElementById('xesto_widget_container')
        if (container.style.display == "none") {
            container.style.display = "inline"
            container.style.zIndex = "1000"

            let msg = JSON.stringify({"xesto": "log_open"})
            document.getElementById('xesto_widget').contentWindow.postMessage(msg, "*")
        }
    }

    hideWidget() {
        let container = document.getElementById('xesto_widget_container')
        if (container.style.display == "inline") {
            container.style.display = "none"

            let msg = JSON.stringify({"xesto": "log_recommend"})
            document.getElementById('xesto_widget').contentWindow.postMessage(msg, "*")
        }
    }

    setBrandAndStyle(brand, style) {
        let msg = JSON.stringify({"xesto": "set_style", "brand": brand, "style": style})
        document.getElementById('xesto_widget').contentWindow.postMessage(msg, "*")
    }

    fetchRecommendation(brand, style, profile) {
        let msg = JSON.stringify({"xesto": "recommend", "brand": brand, "style": style, "profile": profile})
        document.getElementById('xesto_widget').contentWindow.postMessage(msg, "*")
    }

    onXestoReady() {
        this.ready = true
        this.readyEvent.fire()
    }

    onProfileSelected(profile) {
        console.log("onProfileSelected " + profile)
        this.profileSelectedEvent.fire(profile)
        this.hideWidget()
    }

    onProfileLink(link) {
        console.log("onProfileLink" + link)
        this.profileLinkEvent.fire(link)
    }

    onProfilesReady() {
        console.log("onProfilesReady")
        this.profilesReadyEvent.fire()
    }

    onRecommended(recommended) {
        this.recommendationEvent.fire(recommended)
    }
}

XESTO_WIDGET_INTERFACE = new XestoWidgetInterface()


window.addEventListener('message', function(e) {
    var data = null;
    try {
        data = JSON.parse(e.data);
    } catch (error) {
        return
    }

    if (data == null || !('xesto' in data)) {
        return;
    }

    var command = data['xesto']
    if (command == 'recommend') {
        var result = data['result'];
        if (data['profile']) {
            result["name"] = data["profile"]["name"]
        } else {
            result["name"] = data["name"]
        }

        XESTO_WIDGET_INTERFACE.onRecommended(result)
    } else if (command == 'ready') {
        XESTO_WIDGET_INTERFACE.onXestoReady();
    } else if (command == 'profile_selected') {
        XESTO_WIDGET_INTERFACE.onProfileSelected(data['profile']);
    } else if (command == 'profiles_ready') {
        XESTO_WIDGET_INTERFACE.onProfilesReady()
    } else if (command == 'close') {
        XESTO_WIDGET_INTERFACE.hideWidget();
    } else if (command == 'open_app') {
        const domain = window.location.hostname
        if (domain && domain.includes("truetempersports.com")) {
            window.open("https://apps.apple.com/app/true-hockey-sizing/id1631843970");
        } else {
             window.open("https://apps.apple.com/app/xesto/id1491339444");
        }
    } else if (command == 'profile_link') {
        XESTO_WIDGET_INTERFACE.onProfileLink(data['link']);
    }

});


function initializeXesto() {


    var getMeta = function(metaName) {
        const metas = document.getElementsByTagName('meta');

        for (let i = 0; i < metas.length; i++) {
            if (metas[i].getAttribute('name') === metaName) {
                return metas[i].getAttribute('content');
            }
        }
        return null;
    }


    var mobileCheck = function() {
        let check = false;
        (function(a,b){if(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino/i.test(a)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0,4)))check = true;})(navigator.userAgent||navigator.vendor||window.opera);
        return check;
    };

    // Add the widget to the document body
    var container = document.createElement("div");
    container.id = "xesto_widget_container"
    if (mobileCheck()) {
        container.classList.add ("xesto_widget_mobile_container_class")
    } else {
        container.classList.add ("xesto_widget_container_class")
    }
    container.style = "display:none"
    container.innerHTML = `
        <iframe id="xesto_widget" frameBorder="0" style="width: 100%; height: 100%" src="https://service.xesto.io/widget_embed/index.html" title="Xesto Widget"></iframe>
    `
    document.getElementsByTagName("BODY")[0].append(container);

    var xesto_button = document.getElementById("xesto_button");
    if (xesto_button != null) {
        const domain = window.location.hostname
        if (domain && domain.includes("truetempersports.com")) {
            xesto_button.innerHTML = `
            <div style="height:40px; display: inline-block">
            <div class="xesto_button_text">
                Size Yourself With
            </div>
            </div>
            <img class="xesto_button_image" src="https://s3.amazonaws.com/xesto.assets.prod/widget/true_blue.png" />
        `
        } else {
            xesto_button.innerHTML = `
            <img class="xesto_button_second_image" src="https://s3.amazonaws.com/xesto.assets.prod/widget/xesto_icon.png" style="margin-right: 10px;"/>
            <div style="height:40px; display: inline-block">
            <div class="xesto_button_text_bold">
                Size yourself in 3D
            </div>
            </div>
        `
        }

        xesto_button.onclick = () => {
            XESTO_WIDGET_INTERFACE.showWidget()
        };
        if (window.location.hostname && window.location.hostname.includes("truetempersports.com")) {
            XESTO_WIDGET_INTERFACE.showWidget()
        }
    }

    var xesto_clickable = document.getElementsByClassName("xesto_clickable");
    for (var i = 0; i < xesto_clickable.length; i++) {
        xesto_clickable[i].addEventListener('click', function(e) {
            XESTO_WIDGET_INTERFACE.showWidget()
        });
    }

    XESTO_WIDGET_INTERFACE.readyEvent.subscribe(() => {
        console.log("onXestoReady")
        var brand = getMeta("xesto_brand")
        if (brand == null) {
            console.log("xesto_brand meta tag is missing")
            return
        }
        var style = getMeta("xesto_style")
        if (style == null) {
            console.log("xesto_style meta tag is missing")
            return
        }

        XESTO_WIDGET_INTERFACE.setBrandAndStyle(brand, style)

        const urlParams = new URLSearchParams(window.location.search);
        const xesto_profile_value = urlParams.get('xesto_profile');

        if (xesto_profile_value != null) {
            console.log(xesto_profile_value)
            var profile = JSON.parse(xesto_profile_value)

            console.log("POSTING TO FETCH RECOMMENDATIONS")
            XESTO_WIDGET_INTERFACE.fetchRecommendation(brand, style, profile)

            var elmnt = document.getElementById("xesto_recommendation");
            if (elmnt != null) {
                elmnt.scrollIntoView({ behavior: 'smooth', block: 'center' });
            }
        }


    })

    XESTO_WIDGET_INTERFACE.recommendationEvent.subscribe((result) => {
        var obj = document.getElementById("xesto_recommendation");
        if (obj == null) {
            return;
        }
        let recommendation = result

        var html = `Recommended Sizes For <b>${result['name']}</b>:<br>`

        for (var i = 0; i < recommendation.length; i++) {
            html = html + recommendation[i] + "<br/>";
        }
        obj.innerHTML = html;

    })


    XESTO_WIDGET_INTERFACE.profileLinkEvent.subscribe((link) => {
        const inputElement = document.querySelector('#option_3d_foot_scan .control input');
        if (inputElement) {
            inputElement.value = link
        }
    })
}


if(document.readyState === "complete") {
    initializeXesto();
}
else if(document.readyState === "interactive") {
    initializeXesto();
}
else {
    document.addEventListener("DOMContentLoaded", initializeXesto);
}