Write a handler for total statistics

[rafmio]

• The Statistics link sends a request to the http server (on the GUI side)
• The http server loads an HTML page with the html-frame
• This html frame has loaded info by default, with hardcoded statistic of logs + has
  with settings of logs user want to get

[rafmio]

Set this indicators: // map of stat indicator names tsp.statIndicatorsNames["total_records"] = "Total Number of Records" tsp.statIndicatorsNames["unique_ip_count"] = "Unique IP Count" tsp.statIndicatorsNames["records_per_day"] = "Records Per Day" tsp.statIndicatorsNames["top_10_ips"] = "Top 10 Most Frequent IP Addresses"

// set SQL queries for statistics
tsp.statIndicatorsQueries["total_records"] = `SELECT COUNT(*) FROM lg_tab`
tsp.statIndicatorsQueries["unique_ip_count"] = `SELECT COUNT(DISTINCT srcip) FROM lg_tab`

// returned value: average records per day
tsp.statIndicatorsQueries["records_per_day"] = `
   SELECT AVG(daily_count) AS average_records_per_day
    FROM (
        SELECT COUNT(*) AS daily_count
        FROM lg_tab
        GROUP BY DATE(tmstmp)
        ) AS subquery;
`

// returned value: ip:count
tsp.statIndicatorsQueries["top_10_ips"] = `
    SELECT srcip, COUNT(*) AS ip_count
    FROM lg_tab
    GROUP BY srcip
    ORDER BY ip_count DESC
    LIMIT 10
`

// returned value: destination_port:count
tsp.statIndicatorsQueries["top_10_dpt"] = `
SELECT dpt, COUNT(*) AS count
FROM lg_tab
GROUP BY dpt
ORDER BY count DESC
LIMIT 10;
`