function removeAfter(string, pattern) {
    var n = string.indexOf(pattern);
    return string.substring(0, n != -1 ? n : string.length);
}

function pageName(href) {
    if (href.indexOf(window.location.host) >= 0) {
        href = removeAfter(removeAfter(href, '?'), '#')
        hrefE = href.split('/')
        return hrefE[hrefE.length - 1]
    }
    return false
}

function pageSpecific(location) {
    if (pageName(location) == 'contact') {
        initializeMap()
    }
}

function actLink(ev) {
    var location = ev.currentTarget.href
    var page = pageName(location)
    if (page && page != pageName(window.location.href)) {
        loadDoc(location, function () {
            history.pushState({
                loc: location
            }, document.title, location)
        })
        return false
    }
}

function dynamiseLinks(el) {
    $("a", el).click(actLink)
}

function loadDoc(location, callback) {
    if (!callback) {
        callback = function () {
            return undefined
        }
    }
    var eventsLeft = 2
    var html = ''

    function events() {
        eventsLeft += -1
        if (eventsLeft <= 0) {
            mainContainer.html(html)
            dynamiseLinks(mainContainer)
            pageSpecific(location)
            mainContainer.animate({
                height: "toggle",
                opacity: 1
            })
            console.debug(callback)
            callback()
        }
    }
    var mainContainer = $("#mainContainer")
    mainContainer.animate({
        height: "toggle",
        opacity: 0
    }, 'fast', events)
    $.get(location + '?c', function (data) {
        html = data
        events()
    })

}

function historyChange(ev) {
    loadDoc(ev.state.loc)
}

$(document).ready(function () {
    dynamiseLinks(document)
    pageSpecific(window.location.href)
    window.onpopstate = historyChange
})

function initializeMap() {
    var mapCanvas = document.getElementById('map-canvas');
    mapCanvas.innerHTML = ''
    var polytechPos = new google.maps.LatLng(50.6074998, 3.1373338);
    var mapOptions = {
        center: polytechPos,
        zoom: 16,
        mapTypeId: google.maps.MapTypeId.ROADMAP
    }
    var map = new google.maps.Map(mapCanvas, mapOptions)
    var marker = new google.maps.Marker({
        position: polytechPos,
        map: map,
        title: "Polytech Lille"
    });
}