<?php

// Pandora FMS - http://pandorafms.com
// ==================================================
// Copyright (c) 2011 Artica Soluciones Tecnologicas
// Please see http://pandorafms.org for full contribution list

// This program is free software; you can redistribute it and/or
// modify it under the terms of the  GNU Lesser General Public License
// as published by the Free Software Foundation; version 2

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

include_once($config["homedir"] . "/include/graphs/fgraph.php");

function grafico_modulo_sparse2 ($agent_module_id, $period, $show_events,
				$width, $height , $title, $unit_name,
				$show_alerts, $avg_only = 0, $pure = false,
				$date = 0, $baseline = 0, $return_data = 0, $show_title = true) {
	global $config;
	global $graphic_type;
	
	// Set variables
	if ($date == 0) $date = get_system_time();
	$datelimit = $date - $period;
	$resolution = $config['graph_res'] * 50; //Number of points of the graph
	$interval = (int) ($period / $resolution);
	$agent_name = get_agentmodule_agent_name ($agent_module_id);
	$agent_id = get_agent_id ($agent_name);
	$module_name = get_agentmodule_name ($agent_module_id);
	$id_module_type = get_agentmodule_type ($agent_module_id);
	$module_type = get_moduletype_name ($id_module_type);
	$uncompressed_module = is_module_uncompressed ($module_type);
	if ($uncompressed_module) {
		$avg_only = 1;
	}

	// Get event data (contains alert data too)
	if ($show_events == 1 || $show_alerts == 1) {
		$events = get_db_all_rows_filter ('tevento',
			array ('id_agentmodule' => $agent_module_id,
				"utimestamp > $datelimit",
				"utimestamp < $date",
				'order' => 'utimestamp ASC'),
			array ('evento', 'utimestamp', 'event_type'));
		if ($events === false) {
			$events = array ();
		}
	}

	// Get module data
	$data = get_db_all_rows_filter ('tagente_datos',
		array ('id_agente_modulo' => $agent_module_id,
			"utimestamp > $datelimit",
			"utimestamp < $date",
			'order' => 'utimestamp ASC'),
		array ('datos', 'utimestamp'), 'AND', true);
	if ($data === false) {
		$data = array ();
	}
	
	// Uncompressed module data
	if ($uncompressed_module) {
		$min_necessary = 1;
	
	// Compressed module data
	} else {
		// Get previous data
		$previous_data = get_previous_data ($agent_module_id, $datelimit);
		if ($previous_data !== false) {
			$previous_data['utimestamp'] = $datelimit;
			array_unshift ($data, $previous_data);
		}
	
		// Get next data
		$nextData = get_next_data ($agent_module_id, $date);
		if ($nextData !== false) {
			array_push ($data, $nextData);
		} else if (count ($data) > 0) {
			// Propagate the last known data to the end of the interval
			$nextData = array_pop ($data);
			array_push ($data, $nextData);
			$nextData['utimestamp'] = $date;
			array_push ($data, $nextData);
		}
		
		$min_necessary = 2;
	}

	// Check available data
	if (count ($data) < $min_necessary) {
		if (!$graphic_type) {
			return fs_error_image ();
		}
		graphic_error ();
	}

	// Data iterator
	$j = 0;
	
	// Event iterator
	$k = 0;

	// Set initial conditions
	$chart = array();
	if ($data[0]['utimestamp'] == $datelimit) {
		$previous_data = $data[0]['datos'];
		$j++;
	} else {
		$previous_data = 0;
	}

	// Get baseline data
	$baseline_data = array ();
	if ($baseline == 1) {
		$baseline_data = enterprise_hook ('enterprise_get_baseline', array ($agent_module_id, $period, $width, $height , $title, $unit_name, $date));
		if ($baseline_data === ENTERPRISE_NOT_HOOK) {
			$baseline_data = array ();
		}
	}

	// Calculate chart data
	for ($i = 0; $i < $resolution; $i++) {
		$timestamp = $datelimit + ($interval * $i);

		$total = 0;
		$count = 0;
		
		// Read data that falls in the current interval
		$interval_min = false;
		$interval_max = false;
		while (isset ($data[$j]) && $data[$j]['utimestamp'] >= $timestamp && $data[$j]['utimestamp'] < ($timestamp + $interval)) {
			if ($interval_min === false) {
				$interval_min = $data[$j]['datos'];
			}
			if ($interval_max === false) {
				$interval_max = $data[$j]['datos'];
			}

			if ($data[$j]['datos'] > $interval_max) {
				$interval_max = $data[$j]['datos'];
			} else if ($data[$j]['datos'] < $interval_max) {
				$interval_min = $data[$j]['datos'];
			}
			$total += $data[$j]['datos'];
			$count++;
			$j++;
		}

		// Data in the interval
		if ($count > 0) {
			$total /= $count;
		}

		// Read events and alerts that fall in the current interval
		$event_value = 0;
		$alert_value = 0;
		while (isset ($events[$k]) && $events[$k]['utimestamp'] >= $timestamp && $events[$k]['utimestamp'] <= ($timestamp + $interval)) {
			if ($show_events == 1) {
				$event_value++;
			}
			if ($show_alerts == 1 && substr ($events[$k]['event_type'], 0, 5) == 'alert') {
				$alert_value++;
			}
			$k++;
		}

		// Data
		if ($count > 0) {
			$chart[$timestamp]['sum'] = $total;
			$chart[$timestamp]['min'] = $interval_min;
			$chart[$timestamp]['max'] = $interval_max;
			$previous_data = $total;
		// Compressed data
		} else {
			if ($uncompressed_module || ($timestamp > time ())) {
				$chart[$timestamp]['sum'] = 0;
				$chart[$timestamp]['min'] = 0;
				$chart[$timestamp]['max'] = 0;
			} else {
				$chart[$timestamp]['sum'] = $previous_data;
				$chart[$timestamp]['min'] = $previous_data;
				$chart[$timestamp]['max'] = $previous_data;
			}
		}

		$chart[$timestamp]['count'] = 0;
		/////////
		//$chart[$timestamp]['timestamp_bottom'] = $timestamp;
		//$chart[$timestamp]['timestamp_top'] = $timestamp + $interval;
		/////////
		$chart[$timestamp]['event'] = $event_value;
		$chart[$timestamp]['alert'] = $alert_value;
		$chart[$timestamp]['baseline'] = array_shift ($baseline_data);
		if ($chart[$timestamp]['baseline'] == NULL) {
			$chart[$timestamp]['baseline'] = 0;
		}
	}
	
	// Return chart data and don't draw
	if ($return_data == 1) {
		return $chart;
	}	
	
	// Get min, max and avg (less efficient but centralized for all modules and reports)
	$min_value = round(get_agentmodule_data_min ($agent_module_id, $period, $date), 2);
	$max_value = round(get_agentmodule_data_max ($agent_module_id, $period, $date), 2);
	$avg_value = round(get_agentmodule_data_average ($agent_module_id, $period, $date), 2);

	// Fix event and alert scale
	$event_max = $max_value * 1.25;
	foreach ($chart as $timestamp => $chart_data) {
		if ($chart_data['event'] > 0) {
			$chart[$timestamp]['event'] = $event_max;
		}
		if ($chart_data['alert'] > 0) {
			$chart[$timestamp]['alert'] = $event_max;
		}
	}
	
	// Set the title and time format
	if ($period <= 3600) {
		$title_period = __('Last hour');
		$time_format = 'G:i:s';
	}
	elseif ($period <= 86400) {
		$title_period = __('Last day');
		$time_format = 'G:i';
	}
	elseif ($period <= 604800) {
		$title_period = __('Last week');
		$time_format = 'M j';
	}
	elseif ($period <= 2419200) {
		$title_period = __('Last month');
		$time_format = 'M j';
	} 
	else {
		$title_period = __('Last %s days', format_numeric (($period / (3600 * 24)), 2));
		$time_format = 'M j';
	}

    // Only show caption if graph is not small
    if ($width > MIN_WIDTH_CAPTION && $height > MIN_HEIGHT)
    // Flash chart
	$caption = __('Max. Value') . ': ' . $max_value . '    ' . __('Avg. Value') . ': ' . $avg_value . '    ' . __('Min. Value') . ': ' . $min_value;
    else
	$caption = array();
	
	///////
	$color = array();
	$color['sum'] = array('border' => '#000000', 'color' => $config['graph_color2'], 'alpha' => 100);
	$color['event'] = array('border' => '#ff7f00', 'color' => '#ff7f00', 'alpha' => 50);
	$color['alert'] = array('border' => '#ff0000', 'color' => '#ff0000', 'alpha' => 50);
	$color['max'] = array('border' => '#000000', 'color' => $config['graph_color3'], 'alpha' => 100);
	$color['min'] = array('border' => '#000000', 'color' => $config['graph_color1'], 'alpha' => 100);
	$color['baseline'] = array('border' => null, 'color' => '#0097BD', 'alpha' => 10);
	
	$legend = array();
	$legend['sum'] = __('Avg') . ' (' . $avg_value . ')';
	$legend['event'] = __('Events');
	$legend['alert'] = __('Alerts');
	$legend['max'] = __('Max') . ' (' . $max_value . ')';
	$legend['min'] = __('Min') . ' (' . $min_value . ')';
	$legend['baseline'] = __('Baseline');
	
	area_graph(0, $chart, $width, $height, $avg_only, $resolution / 10, $time_format, $show_events, $show_alerts, $caption, $baseline, $color, $legend);
}
?>