// Copyright (c) 2007 Legendum LLC
// This code may be used for free,
// provided this notice is included.

function Search(api, element)
{
    this.api = api;
    this.widget = new Widget(element);
    this.search = {};
    this.secs = 0;
    this.site = null;
    this.channel = null;
    this.date_requested = null;

    // Get a search engine report

    this.display = function(args)
    {
        this.site = args.site;
        this.channel = args.channel;
        this.date_requested = args.date;
        this.widget.setName('Search');
        var query = '?token=' + this.api.getToken() + '&widget=search&site_id=' + args.site + '&channel_id=' + args.channel + '&date=' + args.date
        if (!args.no_link) this.widget.setLink('mystats/widget.php' + query);
        if (!args.no_open) this.widget.setOpen('mystats/window.php' + query);
        this.widget.loading();
        args.report = 'referrer_search';
        args.callback = this.onChannelReports;
        this.api.getChannelReports(this, args, 300); // every 5 minutes
    }

    // Display the search engine report

    this.onChannelReports = function(channel)
    {
        var report = channel[0].report[0];

        // Get the traffic report data

        this.search = {total : 0, google : 0, yahoo : 0, msn : 0, other : 0};
        var data = report.data; // a list of one
        var rows = data.length;
        for (var row = 0; row < rows; row++)
        {
            this.countSearch(this.search, data[row]);
        }

        // Display the search engine report

        var date = report.start_date;
        this.widget.setDate(date);
        var html = '';
        html += this.search.total + " searches<br>\n";
        html += "<hr />\n";
        html += this.search.google + " Google searches<br>\n";
        html += this.search.yahoo + " Yahoo searches<br>\n";
        html += this.search.msn + " MSN searches<br>\n";
        html += this.search.other + " other searches<br>\n";
        this.widget.display(html);

        // Get last week's searches to compare

        if (this.date_requested < 999) // relative date
        {
            this.secs = report.secs;
            var args = {site : this.site,
                        channel : this.channel,
                        report : 'referrer_search,hour_of_day_visits',
                        date : this.date_requested + 7,
                        callback : this.onLastWeek};

            this.api.getChannelReports(this, args);
        }
    }

    // Compare with last week's searches

    this.onLastWeek = function(channel)
    {
        var search_report = channel[0].report[0];
        var hourly_report = channel[0].report[1];

        // Get last week's report data

        var last_week = {total : 0, google : 0, yahoo : 0, msn : 0, other : 0};
        var data = search_report.data;
        var rows = data.length;
        for (var row = 0; row < rows; row++)
        {
            this.countSearch(last_week, data[row]);
        }

        // Calculate percentage changes

        var forecast = this.widget.getForecast(hourly_report, this.secs);
        var total_arrow = this.widget.getArrow(this.search.total, last_week.total, forecast);
        var google_arrow = this.widget.getArrow(this.search.google, last_week.google, forecast);
        var yahoo_arrow = this.widget.getArrow(this.search.yahoo, last_week.yahoo, forecast);
        var msn_arrow = this.widget.getArrow(this.search.msn, last_week.msn, forecast);
        var other_arrow = this.widget.getArrow(this.search.other, last_week.other, forecast);

        var html = '';
        html += total_arrow + ' ' + this.search.total + " searches<br>\n";
        html += "<hr />\n";
        html += google_arrow + ' ' + this.search.google + " Google searches<br>\n";
        html += yahoo_arrow + ' ' + this.search.yahoo + " Yahoo searches<br>\n";
        html += msn_arrow + ' ' + this.search.msn + " MSN searches<br>\n";
        html += other_arrow + ' ' + this.search.other + " other searches<br>\n";
        html += '<div class="widget_info">Comparing same day last week</div>';
        this.widget.display(html);
    }

    this.countSearch = function(search, row)
    {
        var value = Math.floor(row.value);
        search['total'] += value;
        if (row.field.indexOf('google.') > -1)
            search['google'] += value;
        else if (row.field.indexOf('yahoo.') > -1)
            search['yahoo'] += value;
        else if (row.field.indexOf('msn.') > -1)
            search['msn'] += value;
        else if (row.field.indexOf('live.') > -1)
            search['msn'] += value;
        else
            search['other'] += value;
    }
};