--
-- (C) 2013-18 - ntop.org
--

local dirs = ntop.getDirs()
package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path

require "lua_utils"

sendHTTPContentTypeHeader('text/html')

ntop.dumpFile(dirs.installdir .. "/httpdocs/inc/header.inc")
dofile(dirs.installdir .. "/scripts/lua/inc/menu.lua")

select_keys   = _GET["select_keys_clause"]
select_values = _GET["select_values_clause"]
where         = _GET["where_clause"]
maxhits       = _GET["maxhits_clause"]
topk          = _GET["topk_clause"]
begin_time    = _GET["begin_time_clause"]
end_time      = _GET["end_time_clause"]
approx_search = _GET["approx_search"]

if(_GET["flow_clause"] == "aggregated_flows") then
   aggregated_flows = true
else
   aggregated_flows = false
end

if(where == nil)  then
   where = ""
end

if((approx_search == nil) or (approx_search == "true")) then
   approx_search = true
 else
   approx_search = false
end

if((select_keys == nil) or (select_keys == "")) then
   select_keys = "IPV4_SRC_ADDR,IPV4_DST_ADDR,L7_PROTO"
end

if((select_values == nil) or (select_values == "")) then
   select_values = "BYTES"
end

if(topk == nil)  then
   topk = "SUM"
end

if((maxhits == nil) or (maxhits == "")) then
   maxhits = "10"
end

if((begin_time == nil) or (begin_time == "")) then
   begin_time = "now-1h"
end

if((end_time == nil) or (end_time == "")) then
   end_time = "now"
end

-- Zap spaces
select_keys   = select_keys:gsub("%s+", "")
select_values = select_values:gsub("%s+", "")
-- where = where:gsub("%s+", "")

print('<p align=right>[ <A HREF="nindex.lua')

if(_GET["where_clause"] ~= nil) then
   print("?where_clause="..urlencode(_GET["where_clause"]))
end

print('">Flows</A> ] [ <A HREF=/lua/if_stats.lua?page=historical>Interface</A> ]</P>')

print [[
  <form method=get action=nindex_topk.lua>

  <fieldset class="form-group"> 
  <div class="form-group form-row">
    <label for="inputSelect3" class="col-sm-2 col-form-label">Select Keys</label>
    <div class="col-sm-10">
      <input name="select_keys_clause" type="text" class="form-control" id="exampleInputSelect1" aria-describedby="selectHelp" placeholder="Enter select term" value="]] print(select_keys) print [[">
      <small id="selectHelp" class="form-text text-muted">Flow keys. Example: IPV4_SRC_ADDR,IPV4_DST_ADDR....</small>
    </div>
  </div>
 </fieldset>

  <fieldset class="form-group"> 
  <div class="form-group form-row">
    <label for="inputSelect3" class="col-sm-2 col-form-label">Select Values</label>
    <div class="col-sm-10">
      <input name="select_values_clause" type="text" class="form-control" id="exampleInputSelect1" aria-describedby="selectHelp" placeholder="Enter select term" value="]] print(select_values) print [[">
      <small id="selectHelp" class="form-text text-muted">Example: BYTES</small>
    </div>
  </div>
 </fieldset>

  <fieldset class="form-group">
  <div class="form-group form-row">
    <label for="inputWhere3" class="col-sm-2 col-form-label">Where</label>
    <div class="col-sm-10  col-xs-2">
      <input name="where_clause" type="text" class="form-control" id="exampleInputWhere1" aria-describedby="whereHelp" placeholder="Enter where term" value="]] print(where) print [[">
      <small id="whereHelp" class="form-text text-muted">Use field &lt;operatore&gt; where operator could be &lt;, &gt;, =, !=</small>
    </div>
  </div>
  </fieldset>

  <fieldset class="form-group">
    <div class="form-group form-row">
      <label for="inputFlowDB" class="col-sm-2 col-form-label">Time Range</label> 
      <div class="col-sm-10">
        <div class="form-check col-xs-2">
          <label> Begin Time </label>
          <input class="form-control  col-xs-2" type="text" name="begin_time_clause" value="]] print(begin_time) print [[">
        </div>
        <div class="form-check  col-xs-2">
          <label> End Time </label>
          <input class="form-control" type="text" name="end_time_clause" value="]] print(end_time) print [[">
        </div>
      </div>
    </div>
  </fieldset>


  <fieldset class="form-group">
    <div class="form-group form-row">
      <label for="inputFlowDB" class="col-sm-2 col-form-label">Database</label> 
      <div class="col-sm-10">
        <div class="form-check">
          <input class="form-check-input" type="radio" name="flow_clause" id="gridRadios1" value="flows" ]] if(aggregated_flows == false) then print("checked") end print [[>
          <label class="form-check-label" for="gridRadios1">Raw Flows</label>
        </div>
        <div class="form-check">
          <input class="form-check-input" type="radio" name="flow_clause" id="gridRadios2" value="aggregated_flows" ]] if(aggregated_flows == true) then print("checked") end print [[>
          <label class="form-check-label" for="gridRadios2">Aggregated Flows</label>
        </div>
      </div>
    </div>
  </fieldset>

  <fieldset class="form-group">
    <div class="form-group form-row">
      <label for="searchType" class="col-sm-2 col-form-label">Search Type</label> 
      <div class="col-sm-10">
        <div class="form-check">
          <input class="form-check-input" type="radio" name="approx_search" id="gridRadios1" value="false" ]] if(approx_search == false) then print("checked") end print [[>
          <label class="form-check-label" for="gridRadios1">Exact</label>
        </div>
        <div class="form-check">
          <input class="form-check-input" type="radio" name="approx_search" id="gridRadios2" value="true" ]] if(approx_search == true) then print("checked") end print [[>
          <label class="form-check-label" for="gridRadios2">Approximated</label>
        </div>
      </div>
    </div>
  </fieldset>

  <fieldset class="form-group">
  <div class="form-group">
    <label for="inputMaxhits3" class="col-sm-2 col-form-label">Max Results</label>
    <div class="form-check col-xs-2">
      <select name="maxhits_clause" class="form-control" id="exampleFormControlSelect1" id="exampleInputMaxhits1" aria-describedby="maxhitsHelp" placeholder="Enter maxhits condition">
        <option]] if(maxhits == "10") then print(" selected") end print [[>10</option>
        <option]] if(maxhits == "100") then print(" selected") end print [[>100</option>
        <option]] if(maxhits == "1000") then print(" selected") end print [[>1000</option>
      </select>
    </div>
  </div>
  </fieldset>

  <fieldset class="form-group">
  <div class="form-group">
    <label for="aggregation3" class="col-sm-2 col-form-label">Aggregation</label>
    <div class="form-check col-xs-2">
      <select name="topk_clause" class="form-control" id="exampleFormControlSelect1" id="exampleInputTopk1" aria-describedby="topkHelp" placeholder="Enter topk condition">
        <option]] if(topk == "MIN") then print(" selected") end print [[>MIN</option>
        <option]] if(topk == "MAX") then print(" selected") end print [[>MAX</option>
        <option]] if(topk == "SUM") then print(" selected") end print [[>SUM</option>
      </select>
    </div>
  </div>
  </fieldset>

  <button type="submit" class="btn btn-primary">Run query</button>
</form>
]]


bottomToTopSort = false
res = interface.nIndexTopK(aggregated_flows, begin_time, end_time, select_keys, select_values, where, topk, 0, tonumber(maxhits), bottomToTopSort, approx_search)

-- tprint(res)

if(res) then
   if(type(res) == "string") then
      print("<p>&nbsp;</p><font color=red>ERROR: "..res.."</font>")
   else
   if(res.info.duration == 0) then
      res.info.duration = " &lt; 1"
   end
   
   print("<p><small>Query perfomed in "..res.info.duration.." msec</small><br>")
   
   print("<p><table class=\"table table-bordered table-striped\">\n")

   print("<tr>")
   for k, row in pairs(res.columns) do      
      print("<th>"..row.."</th>")     
   end
   print("</tr>\n")
   
   for k, row in pairs(res.results) do
      print("<tr>")
      -- print("<tr><th>"..k.."</th>")
      
      for k, v in pairs(row) do
	 print("<td>"..v.."</td>")
      end
      
      print("</tr>\n")
   end
   
   print("</table>\n")
end
else
   print("No result")
end

dofile(dirs.installdir .. "/scripts/lua/inc/footer.lua")