// taginfo.js

// capitalize a string
String.prototype.capitalize = function() {
    return this.substr(0, 1).toUpperCase() + this.substr(1);
}

// print a number as percent value with two digits after the decimal point
Number.prototype.print_as_percent = function() {
    return (this * 100).toFixed(2) + '%';
};

/* ============================ */

var grids = {};
var current_grid = '';

/* ============================ */

function init_tipsy() {
    jQuery('*[tipsy]').each(function(index, obj) {
        obj = jQuery(obj);
        obj.tipsy({ opacity: 1, delayIn: 500, gravity: obj.attr('tipsy') });
    });
}

function resize_box() {
    var height = jQuery(window).height();

    height -= jQuery('div#header').outerHeight(true);
    height -= jQuery('div.pre').outerHeight(true);
    height -= jQuery('.ui-tabs-nav').outerHeight(true);
    height -= jQuery('div#footer').outerHeight(true);

    var wrapper = jQuery('.resize,.ui-tabs-panel');
    wrapper.outerHeight(height);
}

function resize_home() {
    var tagcloud = jQuery('#tagcloud');
    tagcloud.empty();
    tagcloud.height(0);

    resize_box();

    var height = tagcloud.parent().innerHeight();
    tagcloud.parent().children().each(function(index) {
        if (this.id != 'tagcloud') {
            height -= jQuery(this).outerHeight(true);
        }
    });
    tagcloud.height(height - 20);

    var tags = tagcloud_data();
    var cloud = '';
    for (var i=0; i < tags.length; i++) {
        cloud += link(url_for_key(tags[i][0]), tags[i][0], { style: 'font-size: ' + tags[i][1] + 'px;' }) + ' ';
    }
    tagcloud.append(cloud);

    var tags = tagcloud.children().toArray().sort(function(a, b) {
        return parseInt(jQuery(a).css('font-size')) - parseInt(jQuery(b).css('font-size'));
    });

    while (tagcloud.get(0).scrollHeight > tagcloud.height()) {
        jQuery(tags.shift()).remove();
    }
}

function resize_grid() {
    if (grids[current_grid]) {
        var grid = grids[current_grid][0].grid;
        var oldrp = grid.getRp();
        var rp = calculate_flexigrid_rp(jQuery(grids[current_grid][0]).parents('.resize,.ui-tabs-panel'));
        if (rp != oldrp) {
            grid.newRp(rp);
            grid.fixHeight();
        }
    }
}

/* ============================ */

function hover_expand(text) {
    return '<span class="overflow">' + text + '</span>';
}

function empty(text) {
    return '<span class="empty">' + text + '</span>';
}

function link(url, text, attrs) {
    if (attrs === undefined) {
        attrs = {}
    }
    attrs.href = url;
    var attributes = '';
    for (a in attrs) {
        attributes += ' ' + a + '="' + attrs[a] + '"';
    }
    return '<a' + attributes + '>' + text + '</a>';
}

function print_wiki_link(title, options) {
    if (title == '') {
        return '';
    }

    if (options && options.edit) {
        path = 'w/index.php?action=edit&title=' + title;
    } else {
        path = 'wiki/' + title;
    }

    return link('http://wiki.openstreetmap.org/' + path, title, { target: '_blank', class: 'extlink' });
}

function print_language(code, native_name, english_name) {
    return '<span class="lang" title="' + native_name + ' (' + english_name + ')">' + code + '</span> ' + native_name;
}

function print_image(type) {
    type = type.replace(/s$/, '');
    var name;
    if (type == 'all') {
        name = texts.misc.all;
    } else {
        name = texts.osm[type];
    }
    return '<img src="/img/types/' + type + '.16.png" alt="[' + name + ']" title="' + name + '" width="16" height="16"/>';
}

// print a number with thousand separator
function print_with_ts(value) {
    if (value === null) {
        return '-';
    } else {
        return value.toString().replace(/(\d)(?=(\d\d\d)+(?!\d))/g, '$1&thinsp;');
    }
}

/* ============================ */

function print_key_or_tag_list(list) {
    return jQuery.map(list, function(tag, i) {
        if (tag.match(/=/)) {
            var el = tag.split('=', 2);
            return link_to_tag(el[0], el[1]);
        } else {
            return link_to_key(tag);
        }
    }).join(' &bull; ');
}

function print_prevalent_value_list(key, list) {
    if (list.length == 0) {
        return empty(texts.misc.values_less_than_one_percent);
    }
    return jQuery.map(list, function(item, i) {
        return link_to_value_with_title(key, item.value, '(' + item.fraction.print_as_percent() + ')');
    }).join(' &bull; ');
}

function html_escape(text) {
    return text.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;').replace(/'/g, '&#39;');
}

function url_for_key(key) {
    var k = encodeURIComponent(key);
    if (key.match(/[=\/]/)) {
        return '/keys/?key=' + k;
    } else {
        return '/keys/' + k;
    }
}

function url_for_tag(key, value) {
    var k = encodeURIComponent(key),
        v = encodeURIComponent(value);
    if (key.match(/[=\/]/) || value.match(/[=\/]/)) {
        return '/tags/?key=' + k + '&value=' + v;
    } else {
        return '/tags/' + k + '=' + v;
    }
}

function link_to_value_with_title(key, value, extra) {
    var k = encodeURIComponent(key),
        v = encodeURIComponent(value),
        title = html_escape(value) + ' ' + extra,
        url = url_for_tag(key, value);

    return link(url, pp_value(value), { title: title, tipsy: 'e'});
}

function print_value_with_percent(value, fraction) {
    var v1 = print_with_ts(value),
        v2 = fraction.print_as_percent();
    return '<div class="value">' + v1 + '</div><div class="fraction">' + v2 + '</div><div class="bar" style="width: ' + (fraction*100).toFixed() + 'px;"></div>';
}

var pp_chars = '!"#$%&()*+,-/;<=>?@[\\]^`{|}~' + "'";

function pp_key(key) {
    if (key == '') {
        return '<span class="badchar empty">' + texts.misc.empty_string + '</span>';
    }

    var result = '',
        length = key.length;

    for (var i=0; i<length; i++) {
        var c = key.charAt(i);
        if (pp_chars.indexOf(c) != -1) {
            result += '<span class="badchar">' + c + '</span>';
        } else if (c == ' ') {
            result += '<span class="badchar">&#x2423;</span>';
        } else if (c.match(/\s/)) {
            result += '<span class="whitespace">&nbsp;</span>';
        } else {
            result += c;
        }
    }

    return result;
}

function pp_value(value) {
    if (value == '') {
        return '<span class="badchar empty">' + texts.misc.empty_string + '</span>';
    }
    return value.replace(/ /g, '&#x2423;').replace(/\s/g, '<span class="whitespace">&nbsp;</span>');
}

function pp_value_replace(value) {
    return value.replace(/ /g, '&#x2423;').replace(/\s/g, '<span class="whitespace">&nbsp;</span>');
}

function pp_value_with_highlight(value, highlight) {
    //var values = value.split(new RegExp(highlight, 'i'));
    var values = value.split(highlight);
    values = jQuery.map(values, function(value, i) {
        return pp_value_replace(value);
    });
    highlight = pp_value_replace(highlight);
    return values.join('<b>' + highlight + '</b>');
}

function link_to_value_with_highlight(key, value, highlight) {
    return link(url_for_tag(key, value), pp_value_with_highlight(value, highlight));
}

function link_to_key(key, highlight) {
    var hk;
    if (highlight === undefined) {
        hk = pp_key(key);
    } else {
        var re = new RegExp('(' + highlight + ')', 'gi');
        hk = key.replace(re, "<b>$1</b>");
    }

    return link(url_for_key(key), hk);
}

function link_to_value(key, value) {
    return link(url_for_tag(key, value), pp_value(value));
}

function link_to_tag(key, value) {
    return link_to_key(key) + '=' + link_to_value(key, value);
}

function link_to_key_or_tag(key, value) {
    var link = link_to_key(key);
    if (value && value != '') {
        link += '=' + link_to_value(key, value);
    } else {
        link += '=*';
    }
    return link;
}

/* ============================ */

var flexigrid_defaults = {
    method        : 'GET',
    dataType      : 'json',
    showToggleBtn : false,
    height        : 'auto',
    usepager      : true,
    useRp         : false,
    onSuccess     : function(grid) {
        init_tipsy();
        grid.fixHeight();
    }
};

function calculate_flexigrid_rp(box) {
    var height = box.innerHeight();

    height -= box.children('h2').outerHeight(true);
    height -= box.children('.boxpre').outerHeight(true);
    height -= box.children('.pDiv').outerHeight();
    height -= box.children('.pHiv').outerHeight();
    height -= 90; // table tools and header, possibly horizontal scrollbar

    var rp = Math.floor(height / 26);
    return rp;
}

function create_flexigrid(domid, options) {
    current_grid = domid;
    if (grids[domid] == null) {
        // grid doesn't exist yet, so create it
        var me = jQuery('#' + domid);
        var rp = calculate_flexigrid_rp(me.parents('.resize,.ui-tabs-panel'));
        grids[domid] = me.flexigrid(jQuery.extend({}, flexigrid_defaults, texts.flexigrid, options, { rp: rp }));
        jQuery('th *[title]').tipsy({ opacity: 1, delayIn: 500, gravity: 's' });
    } else {
        // grid does exist, make sure it has the right size
        var grid = grids[domid][0].grid;
        var oldrp = grid.getRp();
        var rp = calculate_flexigrid_rp(jQuery(grids[domid][0]).parents('.resize,.ui-tabs-panel'));
        if (rp != oldrp) {
            grid.newRp(rp);
            grid.fixHeight();
        }
    }
}

function init_tabs(params) {
    return jQuery('#tabs').tabs({
        show: function(event, ui) { 
            resize_box();
            if (ui.index != 0 || window.location.hash != '') {
                window.location.hash = ui.tab.hash;
            }
            if (ui.tab.hash.substring(1) in create_flexigrid_for) {
                create_flexigrid_for[ui.tab.hash.substring(1)].apply(this, params);
            }
        }
    });
}

/* ============================ */

jQuery(document).ready(function() {
    jQuery('#javascriptmsg').remove();

    jQuery('select').customStyle();

    jQuery.getQueryString = (function(a) {
        if (a == "") return {};
        var b = {};
        for (var i = 0; i < a.length; i++) {
            var p=a[i].split('=');
            b[p[0]] = decodeURIComponent(p[1].replace(/\+/g, " "));
        }
        return b;
    })(window.location.search.substr(1).split('&'));

    init_tipsy();

    resize_box();

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

    jQuery('#locale').bind('change', function() {
        jQuery('#set_language').submit();
    });

    jQuery('#search').autocomplete({
        minLength: 2,
        source: '/search/suggest?format=simple',
        delay: 10,
        select: function(event, ui) {
            var query = ui.item.value;
            if (query.match(/=/)) {
                window.location = '/tags/' + ui.item.value;
            } else {
                window.location = '/keys/' + ui.item.value;
            }
        }
    }).focus();

    jQuery(window).resize(function() {
        resize_box();
        resize_grid();
    });
});