function geocode(addr, cb) {
    // wrapper for third party specifics
    // TODO: backup for google here
    geocoder.getLatLng(addr, cb);
}

function geocodeChooser(addr, go_p) {
    geocode(addr, function(point) {
        if (point) {
            if (go_p) {
                // submit lat lng to find closest fleet
                window.location = '/save-city?lat=' + point.lat() + '&lng=' + point.lng() + extra_url_vars;
            } else {
                // find closest fleet
                var fleet_idx = closestFleet(point.lat(), point.lng());
                if (fleet_idx >= 0) {
                    document.getElementById('ch_results').innerHTML = linkify('<strong>' + addr + '</strong> - ' + cities[fleet_idx], null, null, point.lat(), point.lng());
                    matches.push(cities[fleet_idx]);
                    match_indices.push(fleet_idx);
                } else {
                    document.getElementById('ch_results').innerHTML = addr + ' (no zipcars nearby)';
                }

                geocodeExtras = '&lat=' + point.lat() + '&lng=' + point.lng();
            }
        } else {
            document.getElementById('ch_results').innerHTML = addr + ' (unknown)';
        }
    });
    return false;
}

function clearGeocodeTimer() {
    clearTimeout(geotimer);
}

function geocodeTimer() {
    geotimer = setTimeout(function () {
        geocodeChooser(document.getElementById('location-search').value, 0);
    }, 1000);
}

function closestFleet(lat, lng) {
    var min = 10000000;
    var idx = -1;
    var re = 6367000;
    var rad_conv = 0.0174532925;
    for(var i = 0; i < coords.length; i++) {
        var pair = coords[i].split(" ");
        var d = re * (rad_conv * Math.abs(lat - pair[0]) + (rad_conv * Math.abs(lng - pair[1]) * Math.cos(rad_conv * pair[0])));

        if (d < min) {
            min = d;
            idx = i;
        }
    }

    if (idx >= 0 && min <= 50000) {
        return idx;
    }
    return -1;
}

function uniqueElements(a, sortfunc) {
    var b = new Array();
    var last = -1;
    if (sortfunc == null) {
        a.sort();
        last = a[0];
    } else {
        a.sort(sortfunc);
    }
    b.push(a[0]);
    for (var i = 1; i < a.length; i++) {
        if (a[i] > last) {
            last = a[i];
            b.push(last);
        }
    }
    return b;
}

function embolden(terms, regexp, termidx) {
    var s = "";
    for (var i = 0; i < terms.length; i++) {
        if (i == termidx) {
            s += terms[i].replace(regexp, "<strong>$&</strong>") + " ";
        } else {
            s += terms[i] + ' ';
        }
    }
    return s;
}

function linkify(str, id, selected, lat, lng, landing_url) {
    if (!id) {
        return '<li><a class="selected" href="/save-city?lat=' + lat + '&lng=' + lng + extra_url_vars + '">' + str + '<img class="hide" src="/images/template/css/icon_sm_arrow.gif" /></a></li>';
    } else {
        if (selected)
            return '<li><a class="selected" href="/save-city?zipfleet_id=' + id + '&landing_url=' + landing_url + extra_url_vars + '">' + str + '<img class="hide" src="/images/template/css/icon_sm_arrow.gif" /></a></li>';
        else
            return '<li><a href="/save-city?zipfleet_id=' + id + extra_url_vars + '">' + str + '<img class="hide" src="/images/template/css/icon_sm_arrow.gif" /></a></li>';
    }
}

function initchooser() {
    var c = document.getElementById('location-search');

    if (typeof initgeocoder == 'function') {
        initgeocoder();
    }

    c.onkeyup = function(event) {
        clearGeocodeTimer();

        var e = event || window.event;
        var code = e.charCode || e.keyCode;
        var str = c.value;

        //if (code < 32) return;

        if (code == 13) {
            // any matches?  if so, take the first one.
            if (matches && matches.length) {
                window.location = '/save-city?zipfleet_id=' + city_ids[match_indices[0]] + extra_url_vars + geocodeExtras;
            } else {
                if (geocoder) {
                    geocodeChooser(str, 1);
                }
            }

            return;
        } else if (code >= 37 && code <= 40) {
            // arrow key!
            return;
        } else if (code < 32 && code != 8) return;

        geocodeExtras = '';

        var leading_only_p = 0;
        var geocode_p = 0;

        if (str.length == 0) {
            matched();
            return;
        }

        // what indicates an address?  a number, a comma, road abbreviations.
        if (str.search(/\d|,|\.]/) >= 0) {
            geocode_p = 1;
        }

        if (str.length < 3) {
            leading_only_p = 1;
        }

        match_indices = new Array();
        matches = new Array();

        var r;
        var rhybrid;
        str = str.toLowerCase();

        // just the regexps to use later on
        if (leading_only_p) {
            r = new RegExp("^" + str, "i");
            rhybrid = new RegExp("^" + str + "| " + str, "i");
        } else {
            r = new RegExp(str, "i");
            rhybrid = r;
        }

        for (var i = 0; i < cities.length; i++) {
            var m = city_matches[i];
            var one_city = cities[i];

            var hits = m.toLowerCase().match(rhybrid);
            if (hits && hits.length) {
                var idx = i;
                var one_match = one_city.replace(rhybrid, "<strong>$&</strong>");
                // match_indices.push(i);
                // matches.push(linkify(one_city.replace(r, "<strong>$&</strong>"), city_ids[i], 1));

                // if we've matched just the city name, stop right there.
                if (one_match.search(/<strong>/) < 0) {
                    // check the hybrid terms - we might want to
                    // tack on extra info the results
                    var hybrid_terms = hybrid_matches[i].split("|");
                    for (var k = 0; k < hybrid_terms.length; k++) {
                        hits = hybrid_terms[k].toLowerCase().match(rhybrid);
                        if (hits && hits.length) {
                            idx += (k+1) / 10.0;
                            // one_match += ' - ' + hybrid_terms[k].replace(r, "<strong>$&</strong>");
                            one_match = hybrid_terms[k].replace(rhybrid, "<strong>$&</strong>") + ' - ' + one_match;
                            break;
                        }
                    }
                }

                match_indices.push(i);
                matches.push(linkify(one_match, city_ids[i], 1, null, null, landing_urls[i]));
                if (match_indices.length > 4) {
                    matched(matches, str, 0);
                    return;
                }
            }
        }

        matched(matches, str, geocode_p);
    }

    $('#where_are_cars_wrapper').jqm({
        toTop: true,
        overlay: 0,
        onShow: function(h) {
            if (h.o) h.o.fadeTo(400, overlay/100);
            var l = $('#wrapper').offset().left;
            var wac = $('#where_are_cars');
            var f = $('#where_are_cars_trigger');
            f.css('left', l+7);
            wac.css('left', l+3);
            f.css('z-index', 10000);
            wac.css('z-index', 10002);
            updateChooserLinks();
            wac.slideDown(300, function() {
                // hack to prevent firefox from rendering background image as
                // smeared during slide down. repositioning seems to make it
                // repaint properly. -jwolfe
                // wac.css('left', l+4); //removed 12/10 fixed via css -wmoore
            });
        },
        onHide: function(h) {
            var wac = $('#where_are_cars');
            var f = $('#where_are_cars_trigger');
            wac.css('left', 5);
            f.css('left', 6);
            wac.slideUp(300, function() { resetChooserLinks(); });
            if (h.o) h.o.fadeOut(400, function() { if (h.o) h.o.remove(); });
            overlay = opacity;
        }
    });
}

function updateChooserLinks() {
    //$('#where_are_cars').find('.cities a').attr('href', $(this).attr('href').substr(0, $(this).attr('href').indexOf('&return_url')));
    $('#where_are_cars').find('.cities a, #location_results a, .cars-footer a').each(function() {
        $(this).attr('href', $(this).attr('href').substr(0, $(this).attr('href').indexOf('&return_url')) + extra_url_vars);
    });
}

function resetChooserLinks() {
    $('#location_instructions').find('h3').remove();
    $('#location_instructions').find('span.inst').remove();
    extra_url_vars = initial_url_vars;
}

function matched(matches, str, geocode_p) {
    var c = document.getElementById("location_results_container");
    var m = document.getElementById("location_results");
    var nr = document.getElementById("location_no_results");
    var inst = document.getElementById("location_instructions");
    var ql = document.getElementById("location_quick_links");

    // in case our flyout isn't currently being shown, show it
    overlay = 0;
    $('#where_are_cars_wrapper').jqmShow();

    if (!str) {
        c.style.display = 'none';
        ql.style.display = '';
        m.innerHTML = '';
        nr.style.display = 'none';
        inst.style.display = '';
        return;
    }

    if (matches && matches.length) {
        var s = '';
        //var to_add = uniqueElements(matches, null);

        s = matches.join("\n");

//        var to_add = uniqueElements(matches, function(a, b) { return a - b; });
//        var r = new RegExp(str, "i");
//        for (var k = 0; k < to_add.length; k++) {
//            var city_index = Math.floor(to_add[k]);
//            var hybrid_index = Math.floor(to_add[k] * 10) % 10;
//            var city = cities[city_index];
//            if (hybrid_index  > 0) {
//                var hm = hybrid_matches[city_index].split("|");
//                city += ' - ' + hm[hybrid_index-1];
//            }
//            city = city.replace(r, "<strong>$&</strong>");
//            s += '<li><a href="">' + city + '</a></li>';
//        }

        m.innerHTML = '<ul id="ch_results">' + s + '</ul>';

        c.style.display = '';
        ql.style.display = 'none';
        nr.style.display = 'none';
        inst.style.display = 'none';
    } else {
        if (geocode_p) {
            c.style.display = '';
            m.innerHTML = '<ul id="ch_results"><li>' + str + ' (searching..)</li></ul>';
            ql.style.display = 'none';
            nr.style.display = 'none';
            inst.style.display = 'none';
            if (str.length > 4 && geocoder) geocodeTimer();
        } else {
            c.style.display = 'none';
            ql.style.display = '';
            m.innerHTML = '';
            nr.style.display = '';
            inst.style.display = 'none';
        }
    }
}

$(document).ready(initchooser);