Add report data aggregation

Add support for aggregating data together and encoding it according to the
report AJAX specification for the reporting front end.

include/ajax.reports.php

+<?php
+/*********************************************************************
+    ajax.reports.php
+
+    AJAX interface for reports -- both plot and tabular data are retrievable
+    in JSON format from this utility. Please put plumbing in /scp/ajax.php
+    pattern rules.
+
+    Jared Hancock <jared@osticket.com>
+    Copyright (c)  2006-2012 osTicket
+    http://www.osticket.com
+
+    Released under the GNU General Public License WITHOUT ANY WARRANTY.
+    See LICENSE.TXT for details.
+
+    vim: expandtab sw=4 ts=4 sts=4:
+**********************************************************************/
+
+if(!defined('INCLUDE_DIR')) die('403');
+
+include_once(INCLUDE_DIR.'class.ticket.php');
+
+/**
+ * Overview Report
+ * 
+ * The overview report allows for the display of basic ticket statistics in
+ * both graphical and tabular formats.
+ */
+class OverviewReportAjaxAPI extends AjaxController {
+    function enumTabularGroups() {
+        return $this->encode(array("dept"=>"Department", "topic"=>"Topics",
+        "staff"=>"Staff"));
+    }
+
+    function getData() {
+        $start = $this->get('start', strtotime('last month'));
+        $stop = $this->get('stop', time());
+
+        $groups = array(
+            "dept" => array(
+                "table" => DEPT_TABLE,
+                "pk" => "dept_id",
+                "sort" => 'ORDER BY dept_name',
+                "fields" => 'T1.dept_name',
+                "headers" => array('Department')
+            ),
+            "topic" => array(
+                "table" => TOPIC_TABLE,
+                "pk" => "topic_id",
+                "sort" => 'ORDER BY topic',
+                "fields" => "T1.topic",
+                "headers" => array('Help Topic')
+            ),
+            "staff" => array(
+                "table" => STAFF_TABLE,
+                "pk" => 'staff_id',
+                "sort" => 'ORDER BY T1.lastname, T1.firstname',
+                "fields" => "CONCAT_WS(' ', T1.firstname, T1.lastname)",
+                "headers" => array('Staff Member')
+            )
+        );
+        $group = $this->get('group', 'dept');
+        $info = $groups[$group];
+        # XXX: Die if $group not in $groups
+
+        $res = db_query(
+            'SELECT ' . $info['fields'] . ','
+                .' COUNT(A1.ticket_id) AS Opened,'
+                .' COUNT(A2.ticket_id) AS Closed,'
+                .' COUNT(A3.ticket_id) AS Reopened'
+            .' FROM ' . $info['table'] . ' T1'
+            .' LEFT JOIN ' . TICKET_EVENT_TABLE 
+                . ' A1 ON (T1.' . $info['pk'] . ' = A1.' . $info['pk']
+                    .' AND A1.state=\'opened\' AND NOT A1.annulled)'
+            .' LEFT JOIN ' . TICKET_EVENT_TABLE
+                . ' A2 ON (T1.' . $info['pk'] . ' = A2.' . $info['pk']
+                    .' AND A2.state=\'closed\' AND NOT A2.annulled)'
+            .' LEFT JOIN ' . TICKET_EVENT_TABLE
+                . ' A3 ON (T1.' . $info['pk'] . ' = A3.' . $info['pk']
+                    .' AND A3.state=\'reopened\' AND NOT A3.annulled)'
+            .' GROUP BY '.$info['fields']
+        );
+        $rows = array();
+        while ($row = db_fetch_row($res)) {
+            $rows[] = $row;
+        }
+        return array("columns" => array_merge($info['headers'],
+                        array('Opened','Closed','Reopened')),
+                     "data" => $rows);
+    }
+
+    function getTabularData() {
+        return $this->encode($this->getData());
+    }
+
+    function downloadTabularData() {
+        $data = $this->getData();
+        $csv = array($data['columns']);
+        $csv = array_merge($csv, $data['data']);
+        Http::download(
+            sprintf('%s-report.csv', $this->get('group', 'Department')),
+            Format::implode_array(',', "\n", $csv));
+    }
+
+    function getPlotData() {
+        $start = $this->get('start', strtotime('last month'));
+        $stop = $this->get('stop', time());
+
+        # Fetch all types of events over the timeframe
+        $res = db_query('SELECT DISTINCT(state) FROM '.TICKET_EVENT_TABLE
+            .' WHERE timestamp BETWEEN FROM_UNIXTIME('.db_input($start)
+                .') AND FROM_UNIXTIME('.db_input($stop).')');
+        $events = array();
+        while ($row = db_fetch_row($res)) $events[] = $row[0];
+
+        # TODO: Handle user => db timezone offset
+        # XXX: Implement annulled column from the %ticket_event table
+        $res = db_query('SELECT state, DATE_FORMAT(timestamp, \'%Y-%m-%d\'), '
+                .'COUNT(ticket_id)'
+            .' FROM '.TICKET_EVENT_TABLE
+            .' WHERE timestamp BETWEEN FROM_UNIXTIME('.db_input($start)
+                .') AND FROM_UNIXTIME('.db_input($stop)
+            .') GROUP BY state, DATE_FORMAT(timestamp, \'%Y-%m-%d\')');
+        # Initialize array of plot values
+        $plots = array();
+        foreach ($events as $e) { $plots[$e] = array(); }
+
+        $time = null; $times = array();
+        # Iterate over result set, adding zeros for missing ticket events
+        while ($row = db_fetch_row($res)) {
+            $row_time = strtotime($row[1]);
+            if ($time != $row_time) {
+                # New time (and not the first), figure out which events did
+                # not have any tickets associated for this time slot
+                if ($time !== null) {
+                    # Not the first record
+                    foreach (array_diff($events, $slots) as $slot) {
+                        $plots[$slot][] = 0;
+                    }
+                }
+                $slots = array();
+                $times[] = $time = $row_time;
+            }
+            # Keep track of states for this timeframe
+            if (!in_array($row[0], $slots)) $slots[] = $row[0];
+            $plots[$row[0]][] = (int)$row[2];
+        }
+        return $this->encode(array("times" => $times, "plots" => $plots));
+    }
+}

include/class.ajax.php

@@ -50,4 +50,8 @@ class AjaxController extends ApiController {
     function encode($what) {
         return $this->json_encode($what);
     }
+
+    function get($var, $default=null) {
+        return (isset($_GET[$var])) ? $_GET[$var] : $default;
+    }
 }

scp/ajax.php

@@ -45,6 +45,12 @@ $dispatcher = patterns('',
     url('^/config/', patterns('ajax.config.php:ConfigAjaxAPI',
         url_get('^ui', 'ui')
     )),
+    url('^/report/overview/', patterns('ajax.reports.php:OverviewReportAjaxAPI',
+        # Send
+        url_get('^graph$', 'getPlotData'),
+        url_get('^table/groups$', 'enumTabularGroups'),
+        url_get('^table$', 'getTabularData')
+    )),
     url_get('^/users$', array('ajax.users.php:UsersAjaxAPI', 'search')),
     url_get('^/tickets$', array('ajax.tickets.php:TicketsAjaxAPI', 'search')),
     url('^/ticket/', patterns('ajax.tickets.php:TicketsAjaxAPI',