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/*
    test in all browsers
*/

    'use strict';

    function CrimeMap(domId) {
        this.domId = domId;
        this.latLong = {};
        this.markers = [];
        this.crimeData = {};

        this.isMobile();
        this.renderMap();
        this.setupListeners();
        this.enableGeoLocation();
    };

    //Render the initial map on the River Thames - ala Eastenders intro
    CrimeMap.prototype.renderMap = function() {
        var eastenders = new google.maps.LatLng('51.5150', '0.0300');
        this.map = new google.maps.Map(document.getElementById(this.domId), {
            center: eastenders,
            zoom: 13,
            mapTypeId: google.maps.MapTypeId.ROADMAP,
            mapTypeControl: false,
            disableDefaultUI: true,
            zoomControl: true,
            zoomControlOptions: {
                style: google.maps.ZoomControlStyle.LARGE,
                position: google.maps.ControlPosition.RIGHT_BOTTOM
            }
        });
    };

    CrimeMap.prototype.clearMarkers = function() {
        for (var i = 0; i < this.markers.length; i++) {
            this.markers[i].setMap(null);
        }
        this.markers = new Array();
    };

    CrimeMap.prototype.setupListeners = function() {
        var self = this,
            postcode;

        $('.postcode-form').on('submit', function(e) {
            e.preventDefault();
            self.hideUi();
            postcode = $(this).find('#postcode').val();

            if (self.validatePostcode(postcode)) {
                self.hideError($(this));
                if(self.isScottishPostcode(postcode)) {
                    self.showScottishPostcodeError();
                }
                 else {
                    self.hideScottishPostcodeError();
                }
                self.updateLocationMessage(postcode);
                self.geoCode(postcode, self.getCrimeData);
            } else {
                self.showError('This postcode is not recognised');
            }

        });

        $('.current-location-link').on('click', function(e) {
            e.preventDefault();
            self.hideUi();
            $('#postcode').val('');
            self.hideError();
            navigator.geolocation.getCurrentPosition(function(position) {
                self.updateLocationMessage('your current location');
                self.getCrimeData($('#month').val(),position);
            });
        });

        $('#month').on('change', function() {
            self.getCrimeData($(this).val());
        });

        $("input:text:visible:first").focus();
    };

    CrimeMap.prototype.getCrimeData = function(date,pos) {
        var dateString = '',
            self = this;
        if (date) {
            dateString = '&date=' + date;
        }


        if(pos) {
            this.lat = pos.coords.latitude;
            this.lng = pos.coords.longitude;
        }

        this.showLoader();
        this.hideError();

        $.getJSON("https://data.police.uk/api/crimes-street/all-crime?lat=" + this.lat + "&lng=" + this.lng + dateString, function(data) {
            self.crimeData = data;
            if(self.crimeData.length > 0) {
                self.hideError();
                self.organiseData();
                self.plotCrimes();
                self.prepareDataSummary();
            } else {
                self.showError('No results for this location');
            }
        }, function() {
            self.showError('Lookup failed. Try again');
        });
    };

    CrimeMap.prototype.organiseData = function() {
        this.crimes = {};
        for (var i = 0; i < this.crimeData.length; ++i) {
            if (!this.crimes[this.crimeData[i].location.latitude]) {
                this.crimes[this.crimeData[i].location.latitude] = [];
                this.crimes[this.crimeData[i].location.latitude].push(this.crimeData[i]);
            } else {
                this.crimes[this.crimeData[i].location.latitude].push(this.crimeData[i]);
            }
        }
    };

    CrimeMap.prototype.prepareDataSummary = function() {
        var self = this,
            mostCommonCrime;

        $('#no-of-crimes').text(this.crimeData.length);
            mostCommonCrime = Object.keys(this.categories).sort(function(a, b) {
            return -(self.categories[a] - self.categories[b])
        });

        this.buildPie();
        mostCommonCrime = mostCommonCrime[0].replace(/\-/g, '');

        $('#crime-type').text(categories[mostCommonCrime].name).css('color', categories[mostCommonCrime].tooltip);

        if(!this.isMobile()) {
            $('#details').show();
        }
    };

    CrimeMap.prototype.buildPie = function() {
        var data = [],
            i,
            width = 200,
            height = 200,
            radius = Math.min(width, height) / 2,
            color,
            arc,
            pie,
            svg,
            g;

        $('#chart').empty();

        for(i in this.categories) {
            data.push({'cat': i, 'no': this.categories[i]});
        }

        color = d3.scale.ordinal()
        .range(["#98abc5", "#8a89a6", "#7b6888", "#6b486b", "#a05d56", "#d0743c", "#ff8c00"]);

        arc = d3.svg.arc()
        .outerRadius(radius - 10)
        .innerRadius(45);

        pie = d3.layout.pie()
        .sort(null)
        .value(function(d) { return d.no; });

        svg = d3.select("#chart").append("svg")
        .attr("width", width)
        .attr("height", height)
        .append("g")
        .attr("transform", "translate(" + width / 1.9 + "," + height / 2.2 + ")");

        g = svg.selectAll(".arc")
        .data(pie(data))
        .enter().append("g")
        .attr("class", "arc")
        .on(this.ev, function(d) {
            $("#tooltip")
            .html('<p><strong>' + d.data.cat.replace(/\-/g, ' ') + ':</strong> ' + d.data.no + ' crimes</p>')
            .css("top", y + 10)
            .css("left", x + 10)
            .show();
        })
        .on('mousemove', function(d) {
            $("#tooltip")
            .css("top", y + 10)
            .css("left", x + 10);
        })
        .on('mouseout', function(d) {
            $("#tooltip").html('').hide();
        });

        g.append("path")
            .attr("d", arc)
            .style("fill", function(d) { return categories[d.data.cat.replace(/\-/g, '')].tooltip;  });

        g.append("text")
            .attr("transform", function(d) { return "translate(" + arc.centroid(d) + ")"; })
            .attr("dy", ".35em")
            .style("text-anchor", "middle");

            if(!this.isMobile()) {
                $('#chart').show();
            }

            this.buildKey();
    };

    CrimeMap.prototype.getCircle = function(size, cat) {
        size = size + 4;
        var colour = categories[cat.replace(/\-/g, '')];

        var circle = {
            path: google.maps.SymbolPath.CIRCLE,
            fillColor: '' + colour.tooltip + '',
            fillOpacity: 0.7,
            scale: size,
            strokeColor: '#888',
            strokeWeight: 1
        };
        return circle;
    };

    CrimeMap.prototype.buildKey = function() {
        var key = $('<ul id="key"></ul>'),
            listItem;

            for (var i in this.categories) {
                listItem = $('<li><span class="circle" style="background-color:' + categories[i.replace(/\-/g, '')].tooltip + '"></span><span>'+i.replace(/\-/g, ' ')+'</span></li>');
                key.append(listItem);
            }
            $('#chart').append(key);
    };

    /* This method should definitely not be doing so much - it should be refactored */
    CrimeMap.prototype.plotCrimes = function() {
        var crimes = this.crimes,
            i,
            j,
            p,
            outcome,
            marker,
            self = this,
            size,
            loc,
            list,
            crimeType,
            categoriesCurr,
            curr,
            co,
            mode,
            ev,
            point,
            infowindow;

        this.categories = {};
        this.clearMarkers();
        this.hideLoader();

        for (i in crimes) {
            mode = {};
            size = crimes[i].length;

            //work out the mean of the returned crimes
            for (j = 0; j < size; ++j) {
                    crimeType = crimes[i][j].category;
                if (!this.categories[crimeType]) {
                    this.categories[crimeType] = 1;
                } else {
                    categoriesCurr = this.categories[crimeType];
                    this.categories[crimeType] = categoriesCurr + 1;
                }
                if (!mode[crimeType]) {
                    mode[crimeType] = 1;
                } else {
                    curr = mode[crimeType];
                    mode[crimeType] = curr + 1;
                }
            }

            //sort the data for the location numerically - greatest to smallest
            co = Object.keys(mode).sort(function(a, b) {
                return -(mode[a] - mode[b])
            });

            loc = new google.maps.LatLng(crimes[i][0].location.latitude, crimes[i][0].location.longitude);

            list = this.buildLocationCrimeList(mode, co);

            var currMonth = $('#month option:selected').text();

            if (size > 1) {
                crimes[i].markerContent = '<div class="infodiv" style="width: 300px;"><h4><strong>' + size + ' crimes reported ' + crimes[i][0].location.street.name + ' in ' + currMonth + '</strong></h4><br />' + ' ' + list + '</div>'
            } else {
                crimes[i].markerContent = '<div class="infodiv" style="width: 300px"><h4><strong>' + size + ' crime reported ' + crimes[i][0].location.street.name + ' in ' + currMonth + '</strong></h4><br />' + ' ' + list + '</div>'
            }

            marker = new google.maps.Marker({
                icon: this.getCircle(size, co[0]),
                position: loc,
                map: this.map,
                zIndex: 400
            });

            this.markers.push(marker);
            point = new google.maps.Point(0, 350);
            infowindow = new google.maps.InfoWindow({
                content: crimes[i].markerContent,
                anchorPoint: point
            });

            google.maps.event.addListener(marker, this.ev, (function(pointer, bubble, mode) {
                return function() {
                    self.bubbleChart(bubble);
                    bubble.open(self.map, pointer);
                }
            })(marker, infowindow, mode));

            google.maps.event.addListener(marker, 'mouseout', (function(pointer, bubble) {
                return function() {
                    bubble.close(self.map);
                }
            })(marker, infowindow));

            this.panAndZoom();
        }
    };

    CrimeMap.prototype.buildLocationCrimeList = function(modeList, ordered) {
        var i,
            list = '',
            currentCat,
            singlePlural = 's';

        for (i = 0; i < ordered.length; ++i) {
            currentCat = ordered[i].replace(/\-/g, '');
            modeList[ordered[i]] === 1 ? singlePlural = '' : singlePlural = 's';
            list += '<li><span class="circle" style="background-color:' + categories[currentCat].tooltip + '"></span>' + modeList[ordered[i]] + ' count' + singlePlural + ' of <span style="color:' + categories[currentCat].tooltip + '">' + ordered[i].replace(/\-/g, ' ') + '</span></li>';
        }

        return '<ul>' + list + '</ul>';
    };

    CrimeMap.prototype.bubbleChart = function(marker) {
        var svg = d3.select()
            .append("svg")
            .attr("width", 300)
            .attr("height", 300)
            .attr("class", "bubble");
    };

    CrimeMap.prototype.panAndZoom = function() {
            var ltln = new google.maps.LatLng(this.lat, this.lng);
            this.map.panTo(ltln);

        this.map.setZoom(15);
    };

    CrimeMap.prototype.enableGeoLocation = function() {
        if ("geolocation" in navigator) {
            $('.current-location').show();
        }
    };

    CrimeMap.prototype.geoCode = function(postcode, callback) {
        var geocoder = new google.maps.Geocoder(),
            self = this;

        geocoder.geocode({
            'address': postcode
        }, function(results, status) {
            if (status == google.maps.GeocoderStatus.OK) {
                self.lat = results[0].geometry.location.lat();
                self.lng = results[0].geometry.location.lng();
                callback.call(self);
            } else {
                $('.postcode-error-text').show();
            }
        });
    };

    CrimeMap.prototype.isMobile = function() {
          this.isMob = false;
          this.ev = 'mouseover';

      if( /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)) {
          this.isMob = true;
          this.ev = 'click';
      }
        return this.isMob;
    };

    CrimeMap.prototype.validatePostcode = function(input) {
        var postcode = input.replace(/\s/g, '');
        return /[a-zA-Z]{1,2}[0-9][0-9A-Za-z]?\s?[0-9][a-zA-Z]{2}/.test(postcode);
    };

    CrimeMap.prototype.updateLocationMessage = function(str) {
        $('.location-ident').text(str);
    };

    CrimeMap.prototype.isScottishPostcode = function(postcode) {
        var postcodePrefix = postcode.substring(0,2);
        var scottishPostcodes = ['AB','DD','DG','EH','FK','HS','IV','KA','KW','KY','ML','PA','PH','TD','ZE'];
        if(scottishPostcodes.indexOf(postcodePrefix) !== -1) {
            return true;
        } else if(postcode.substring(0,1).toLowerCase() === 'g' && !isNaN(postcode.substring(1,1))) {
            return true;
        }
        return false;
    };

    CrimeMap.prototype.showScottishPostcodeError = function() {
        $('.scottish-postcode-msg').show();
    };

    CrimeMap.prototype.hideScottishPostcodeError = function() {
        $('.scottish-postcode-msg').hide();
    };

    CrimeMap.prototype.showError = function(errString) {
        var errContainer = $('.error-text');
        this.hideUi();
        this.hideLoader();
        this.hideScottishPostcodeError();
        errContainer.find('.error-msg').text(errString);
        errContainer.show();
    };

    CrimeMap.prototype.hideUi = function() {
        $('#chart,#details,.scottish-postcode-msg').hide();
    };


    CrimeMap.prototype.hideError = function() {
        var errContainer = $('.error-text');
        errContainer.find('error-msg').text('');
        errContainer.hide();
    };

    CrimeMap.prototype.showLoader = function() {
        $('.loading').show();
    };

    CrimeMap.prototype.hideLoader = function() {
        $('.loading').hide();
    };

    var monthNames = [
        "Jan", "Feb", "Mar",
        "Apr", "May", "Jun",
        "Jul", "Aug", "Sep",
        "Oct", "Nov", "Dec"
    ];

    var categories = {
        othertheft: {
            tooltip: '#4B3E4D',
            name: 'Other theft'
        },
        vehiclecrime: {
            tooltip: '#1E8C93',
            name: 'Vehicle crime'
        },
        antisocialbehaviour: {
            tooltip: '#679208',
            name: 'Antisocial behaviour'
        },
        criminaldamagearson: {
            tooltip: '#C4AC30',
            name: 'Criminal Damage or Arson'
        },
        violentcrime: {
            tooltip: '#D31900',
            name: 'Violent crime'
        },
        shoplifting: {
            tooltip: '#305AA1',
            name: 'Shoplifting'
        },
        burglary: {
            tooltip: '#FF6600',
            name: 'Burglary'
        },
        publicorder: {
            tooltip: '#7CB490',
            name: 'Public Order'
        },
        publicdisorderweapons: {
            tooltip: 'grey',
            name: 'Public disorder weapons'
        },
        bicycletheft: {
            tooltip: '#680148',
            name: 'Bicycle Theft'
        },
        drugs: {
            tooltip: '#7DB4B5',
            name: 'Drugs'
        },
        othercrime: {
            tooltip: '#FF1168',
            name: 'Other crime'
        },
        possessionofweapons: {
            tooltip: 'brown',
            name: 'Possession of weopons'
        },
        theftfromtheperson: {
            tooltip: '#DBD8A2',
            name: 'Theft from the person'
        },
        robbery: {
            tooltip: 'silver',
            name: 'Robbery'
        }
    };

    $(document).mousemove(function(e) {
      window.x = e.pageX;
      window.y = e.pageY;
    });


    $(function() {
        new CrimeMap('map_canvas');
    });