#!/usr/bin/env php
<?php
/*
 +-------------------------------------------------------------------------+
 | Copyright (C) 2004-2026 The Cacti Group                                 |
 |                                                                         |
 | This program is free software; you can redistribute it and/or           |
 | modify it under the terms of the GNU General Public License             |
 | as published by the Free Software Foundation; either version 2          |
 | of the License, or (at your option) any later version.                  |
 |                                                                         |
 | 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.                            |
 +-------------------------------------------------------------------------+
 | Cacti: The Complete RRDtool-based Graphing Solution                     |
 +-------------------------------------------------------------------------+
 | This code is designed, written, and maintained by the Cacti Group. See  |
 | about.php and/or the AUTHORS file for specific developer information.   |
 +-------------------------------------------------------------------------+
 | http://www.cacti.net/                                                   |
 +-------------------------------------------------------------------------+
*/

require(__DIR__ . '/../include/cli_check.php');
require_once(CACTI_PATH_LIBRARY . '/api_automation_tools.php');

// switch to main database for cli's
if (POLLER_ID > 1) {
	db_switch_remote_to_main();
}

// process calling arguments
$parms = $_SERVER['argv'];
array_shift($parms);

if (cacti_sizeof($parms)) {
	$displayHosts          = false;
	$displayGraphTemplates = false;
	$quietMode             = false;

	unset($host_id);
	unset($graph_template_id);

	foreach ($parms as $parameter) {
		if (str_contains($parameter, '=')) {
			[$arg, $value] = explode('=', $parameter, 2);
		} else {
			$arg   = $parameter;
			$value = '';
		}

		switch ($arg) {
			case '-d':
				$debug = true;

				break;
			case '--host-id':
				$host_id = trim($value);

				if (!is_numeric($host_id)) {
					print 'ERROR: You must supply a valid host-id to run this script!' . PHP_EOL;

					exit(1);
				}

				break;
			case '--graph-template-id':
				$graph_template_id = $value;

				if (!is_numeric($graph_template_id)) {
					print 'ERROR: You must supply a numeric graph-template-id for all hosts!' . PHP_EOL;

					exit(1);
				}

				break;
			case '--version':
			case '-V':
			case '-v':
				display_version();

				exit(0);
			case '--help':
			case '-H':
			case '-h':
				display_help();

				exit(0);
			case '--list-hosts':
				$displayHosts = true;

				break;
			case '--list-graph-templates':
				$displayGraphTemplates = true;

				break;
			case '--quiet':
				$quietMode = true;

				break;
			default:
				print "ERROR: Invalid Argument: ($arg)" . PHP_EOL . PHP_EOL;
				display_help();

				exit(1);
		}
	}

	// list options, recognizing $quiteMode
	if ($displayHosts) {
		$hosts = getHosts();
		displayHosts($hosts, $quietMode);

		exit(0);
	}

	if ($displayGraphTemplates) {
		$graphTemplates = getGraphTemplates();
		displayGraphTemplates($graphTemplates, $quietMode);

		exit(0);
	}

	/*
	 * verify required parameters
	 * for update / insert options
	 */
	if (!isset($host_id)) {
		print 'ERROR: You must supply a valid host-id for all hosts!' . PHP_EOL;

		exit(1);
	}

	if (!isset($graph_template_id)) {
		print 'ERROR: You must supply a valid data-query-id for all hosts!' . PHP_EOL;

		exit(1);
	}

	// verify valid host id and get a name for it
	$host_name = db_fetch_cell('SELECT hostname FROM host WHERE id = ' . $host_id);

	if (!isset($host_name)) {
		print "ERROR: Unknown Host Id ($host_id)" . PHP_EOL;

		exit(1);
	}

	// verify valid graph template and get a name for it
	$graph_template_name = db_fetch_cell('SELECT name FROM graph_templates WHERE id = ' . $graph_template_id);

	if (!isset($graph_template_name)) {
		print "ERROR: Unknown Graph Template Id ($graph_template_id)" . PHP_EOL;

		exit(1);
	}

	// check, if graph template was already associated
	$exists_already = db_fetch_cell("SELECT host_id FROM host_graph WHERE graph_template_id=$graph_template_id AND host_id=$host_id");

	if ((isset($exists_already)) &&
		($exists_already > 0)) {
		print "ERROR: Graph Template is already associated for host: ($host_id: $host_name) - graph-template: ($graph_template_id: $graph_template_name)" .
			PHP_EOL;

		exit(1);
	} else {
		db_execute('replace into host_graph (host_id,graph_template_id) values (' .
			$host_id .
			',' .
			$graph_template_id .
			')');

		if ($host_id > 0) {
			object_cache_get_totals('device_state', $host_id);
		}

		automation_hook_graph_template($host_id, $graph_template_id);

		if ($host_id > 0) {
			object_cache_get_totals('device_state', $host_id, true);
			object_cache_update_totals('diff');
		}

		api_plugin_hook_function('add_graph_template_to_host',
			['host_id'          => $host_id,
			'graph_template_id' => $graph_template_id]);
	}

	if (is_error_message()) {
		print "ERROR: Failed to add this graph template for host: ($host_id: $host_name) - graph-template: ($graph_template_id: $graph_template_name)" .
			PHP_EOL;

		exit(1);
	} else {
		print "Success: Graph Template associated for host: ($host_id: $host_name) - graph-template: ($graph_template_id: $graph_template_name)" .
			PHP_EOL;

		exit(0);
	}
} else {
	display_help();

	exit(0);
}

// display_version - displays version information
function display_version() : void {
	$version = get_cacti_cli_version();
	print "Cacti Add Graph Template Utility, Version $version, " . COPYRIGHT_YEARS . PHP_EOL;
}

/**
 * display_help - displays help information
 *
 * @return void
 */
function display_help() : void {
	display_version();

	print PHP_EOL;
	print 'usage: add_graph_template.php --host-id=[ID] --graph-template-id=[ID]' . PHP_EOL;
	print '    [--quiet]' . PHP_EOL . PHP_EOL;

	print 'Required:' . PHP_EOL;
	print '    --host-id             the numerical ID of the host' . PHP_EOL;
	print '    --graph-template-id   the numerical ID of the graph template to be added' . PHP_EOL . PHP_EOL;

	print 'List Options:' . PHP_EOL;
	print '    --list-hosts' . PHP_EOL;
	print '    --list-graph-templates' . PHP_EOL;
	print '    --quiet - batch mode value return' . PHP_EOL . PHP_EOL;
}