<?php
/* Copyright (C) 2007-2012 Laurent Destailleur  <eldy@users.sourceforge.net>
 * Copyright (C) 2014	   Juanjo Menent		<jmenent@2byte.es>
 * Copyright (C) 2015      Ion Agorria          <ion@agorria.com>
 *
 * 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 3 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <https://www.gnu.org/licenses/>.
 */

/**
 *	\file       htdocs/product/dynamic_price/class/price_global_variable_updater.class.php
 *	\ingroup    product
 *  \brief      Class for price global variable updaters table
 */


/**
 *	Class for price global variable updaters table
 */
class PriceGlobalVariableUpdater
{
	/**
	 * @var DoliDB Database handler.
	 */
	public $db;

	/**
	 * @var string Error code (or message)
	 */
	public $error = '';

	/**
	 * @var string[] Error codes (or messages)
	 */
	public $errors = array();

	public $types = array(0, 1); //!< Updater types
	public $update_min = 5; //!< Minimal update rate

	/**
	 * @var int ID
	 */
	public $id;

	public $type;

	/**
	 * @var string description
	 */
	public $description;

	public $parameters;

	/**
	 * @var int ID
	 */
	public $fk_variable;

	public $update_interval; //!< Interval in mins
	public $next_update; //!< Next update timestamp
	public $last_status;

	/**
	 * @var string Name of table without prefix where object is stored
	 */
	public $table_element = "c_price_global_variable_updater";

	/**
	 *  Constructor
	 *
	 *  @param  DoliDb      $db      Database handler
	 */
	public function __construct($db)
	{
		$this->db = $db;
	}


	/**
	 *  Create object into database
	 *
	 *  @param	User	$user        User that creates
	 *  @param  int		$notrigger   0=launch triggers after, 1=disable triggers
	 *  @return int      		   	 <0 if KO, Id of created object if OK
	 */
	public function create($user, $notrigger = 0)
	{
		$error = 0;

		$this->checkParameters();

		// Insert request
		$sql = "INSERT INTO ".$this->db->prefix().$this->table_element." (";
		$sql .= "type, description, parameters, fk_variable, update_interval, next_update, last_status";
		$sql .= ") VALUES (";
		$sql .= " ".((int) $this->type).",";
		$sql .= " ".(isset($this->description) ? "'".$this->db->escape($this->description)."'" : "''").",";
		$sql .= " ".(isset($this->parameters) ? "'".$this->db->escape($this->parameters)."'" : "''").",";
		$sql .= " ".((int) $this->fk_variable).",";
		$sql .= " ".((int) $this->update_interval).",";
		$sql .= " ".((int) $this->next_update).",";
		$sql .= " ".(isset($this->last_status) ? "'".$this->db->escape($this->last_status)."'" : "''");
		$sql .= ")";

		$this->db->begin();

		dol_syslog(__METHOD__, LOG_DEBUG);
		$resql = $this->db->query($sql);
		if (!$resql) {
			$error++; $this->errors[] = "Error ".$this->db->lasterror();
		}

		if (!$error) {
			$this->id = $this->db->last_insert_id($this->db->prefix().$this->table_element);

			if (!$notrigger) {
				// Uncomment this and change MYOBJECT to your own tag if you
				// want this action calls a trigger.

				//// Call triggers
				//$result=$this->call_trigger('MYOBJECT_CREATE',$user);
				//if ($result < 0) { $error++; //Do also what you must do to rollback action if trigger fail}
				//// End call triggers
			}
		}

		// Commit or rollback
		if ($error) {
			foreach ($this->errors as $errmsg) {
				dol_syslog(__METHOD__." ".$errmsg, LOG_ERR);
				$this->error .= ($this->error ? ', '.$errmsg : $errmsg);
			}
			$this->db->rollback();
			return -1 * $error;
		} else {
			$this->db->commit();
			return $this->id;
		}
	}


	/**
	 *  Load object in memory from the database
	 *
	 *  @param		int		$id    	Id object
	 *  @return		int			    < 0 if KO, 0 if OK but not found, > 0 if OK
	 */
	public function fetch($id)
	{
		$sql = "SELECT type, description, parameters, fk_variable, update_interval, next_update, last_status";
		$sql .= " FROM ".$this->db->prefix().$this->table_element;
		$sql .= " WHERE rowid = ".((int) $id);

		dol_syslog(__METHOD__);
		$resql = $this->db->query($sql);
		if ($resql) {
			$obj = $this->db->fetch_object($resql);
			if ($obj) {
				$this->id = $id;
				$this->type = $obj->type;
				$this->description		= $obj->description;
				$this->parameters = $obj->parameters;
				$this->fk_variable		= $obj->fk_variable;
				$this->update_interval = $obj->update_interval;
				$this->next_update		= $obj->next_update;
				$this->last_status		= $obj->last_status;
				$this->checkParameters();
				return 1;
			} else {
				return 0;
			}
		} else {
			$this->error = "Error ".$this->db->lasterror();
			return -1;
		}
	}

	/**
	 *  Update object into database
	 *
	 *  @param	User	$user        User that modifies
	 *  @param  int		$notrigger	 0=launch triggers after, 1=disable triggers
	 *  @return int     		   	 <0 if KO, >0 if OK
	 */
	public function update($user = 0, $notrigger = 0)
	{
		$error = 0;

		$this->checkParameters();

		// Update request
		$sql = "UPDATE ".$this->db->prefix().$this->table_element." SET";
		$sql .= " type = ".((int) $this->type).",";
		$sql .= " description = ".(isset($this->description) ? "'".$this->db->escape($this->description)."'" : "''").",";
		$sql .= " parameters = ".(isset($this->parameters) ? "'".$this->db->escape($this->parameters)."'" : "''").",";
		$sql .= " fk_variable = ".((int) $this->fk_variable).",";
		$sql .= " update_interval = ".((int) $this->update_interval).",";
		$sql .= " next_update = ".((int) $this->next_update).",";
		$sql .= " last_status = ".(isset($this->last_status) ? "'".$this->db->escape($this->last_status)."'" : "''");
		$sql .= " WHERE rowid = ".((int) $this->id);

		$this->db->begin();

		dol_syslog(__METHOD__);
		$resql = $this->db->query($sql);
		if (!$resql) {
			$error++; $this->errors[] = "Error ".$this->db->lasterror();
		}

		// if (! $error)
		// {
		//     if (! $notrigger)
		//     {
		//         // Uncomment this and change MYOBJECT to your own tag if you
		//         // want this action calls a trigger.

		//         //// Call triggers
		//         //$result=$this->call_trigger('MYOBJECT_MODIFY',$user);
		//         //if ($result < 0) { $error++; //Do also what you must do to rollback action if trigger fail}
		//         //// End call triggers
		//     }
		// }

		// Commit or rollback
		if ($error) {
			foreach ($this->errors as $errmsg) {
				dol_syslog(get_class($this)."::update ".$errmsg, LOG_ERR);
				$this->error .= ($this->error ? ', '.$errmsg : $errmsg);
			}
			$this->db->rollback();
			return -1 * $error;
		} else {
			$this->db->commit();
			return 1;
		}
	}

	/**
	 *  Delete object in database
	 *
	 * 	@param	int		$rowid		 Row id of global variable
	 *	@param  User	$user        User that deletes
	 *  @param  int		$notrigger	 0=launch triggers after, 1=disable triggers
	 *  @return	int					 <0 if KO, >0 if OK
	 */
	public function delete($rowid, $user, $notrigger = 0)
	{
		$error = 0;

		$this->db->begin();

		//if (! $error)
		//{
		//    if (! $notrigger)
		//    {
				// Uncomment this and change MYOBJECT to your own tag if you
				// want this action calls a trigger.

				//// Call triggers
				//$result=$this->call_trigger('MYOBJECT_DELETE',$user);
				//if ($result < 0) { $error++; //Do also what you must do to rollback action if trigger fail}
				//// End call triggers
		//    }
		//}

		if (!$error) {
			$sql = "DELETE FROM ".$this->db->prefix().$this->table_element;
			$sql .= " WHERE rowid = ".((int) $rowid);

			dol_syslog(__METHOD__);
			$resql = $this->db->query($sql);
			if (!$resql) {
				$error++; $this->errors[] = "Error ".$this->db->lasterror();
			}
		}

		// Commit or rollback
		if ($error) {
			foreach ($this->errors as $errmsg) {
				dol_syslog(__METHOD__." ".$errmsg, LOG_ERR);
				$this->error .= ($this->error ? ', '.$errmsg : $errmsg);
			}
			$this->db->rollback();
			return -1 * $error;
		} else {
			$this->db->commit();
			return 1;
		}
	}

	/**
	 *	Initialise object with example values
	 *	Id must be 0 if object instance is a specimen
	 *
	 *	@return	void
	 */
	public function initAsSpecimen()
	{
		$this->id = 0;
		$this->type = 0;
		$this->description = '';
		$this->parameters = '';
		$this->fk_variable = 0;
		$this->update_interval = 0;
		$this->next_update = 0;
		$this->last_status = '';
	}

	/**
	 *  Returns the last updated time in string html format, returns "never" if its less than 1
	 *
	 *  @return	string
	 */
	public function getLastUpdated()
	{
		global $langs;
		$last = $this->next_update - ($this->update_interval * 60);
		if ($last < 1) {
			return $langs->trans("Never");
		}
		$status = empty($this->last_status) ? $langs->trans("CorrectlyUpdated") : $this->last_status;
		return $status.'<br>'.dol_print_date($last, '%d/%m/%Y %H:%M:%S');
	}

	/**
	 *	Checks if all parameters are in order
	 *
	 *	@return	void
	 */
	public function checkParameters()
	{
		// Clean parameters
		if (isset($this->description)) {
			$this->description = trim($this->description);
		}
		if (isset($this->parameters)) {
			$this->parameters = trim($this->parameters);
		} else {
			$this->parameters = "";
		}
		if (isset($this->last_status)) {
			$this->last_status = trim($this->last_status);
		}

		// Check parameters
		if (empty($this->type) || !is_numeric($this->type) || !in_array($this->type, $this->types)) {
			$this->type = 0;
		}
		if (empty($this->update_interval) || !is_numeric($this->update_interval) || $this->update_interval < 1) {
			$this->update_interval = $this->update_min;
		}
		if (empty($this->next_update) || !is_numeric($this->next_update) || $this->next_update < 0) {
			$this->next_update = 0;
		}
	}

	/**
	 *  List all price global variables
	 *
	 *  @return	array				Array of price global variable updaters
	 */
	public function listUpdaters()
	{
		$sql = "SELECT rowid, type, description, parameters, fk_variable, update_interval, next_update, last_status";
		$sql .= " FROM ".$this->db->prefix().$this->table_element;

		dol_syslog(__METHOD__, LOG_DEBUG);
		$resql = $this->db->query($sql);
		if ($resql) {
			$retarray = array();

			while ($record = $this->db->fetch_array($resql)) {
				$updater_obj = new PriceGlobalVariableUpdater($this->db);
				$updater_obj->id = $record["rowid"];
				$updater_obj->type = $record["type"];
				$updater_obj->description		= $record["description"];
				$updater_obj->parameters = $record["parameters"];
				$updater_obj->fk_variable		= $record["fk_variable"];
				$updater_obj->update_interval = $record["update_interval"];
				$updater_obj->next_update		= $record["next_update"];
				$updater_obj->last_status		= $record["last_status"];
				$updater_obj->checkParameters();
				$retarray[] = $updater_obj;
			}

			$this->db->free($resql);
			return $retarray;
		} else {
			$this->error = $this->db->error();
			return -1;
		}
	}

	/**
	 *  List all updaters which need to be processed
	 *
	 *  @return	array				Array of price global variable updaters
	 */
	public function listPendingUpdaters()
	{
		$sql = "SELECT rowid, type, description, parameters, fk_variable, update_interval, next_update, last_status";
		$sql .= " FROM ".$this->db->prefix().$this->table_element;
		$sql .= " WHERE next_update < ".dol_now();

		dol_syslog(__METHOD__, LOG_DEBUG);
		$resql = $this->db->query($sql);
		if ($resql) {
			$retarray = array();

			while ($record = $this->db->fetch_array($resql)) {
				$updater_obj = new PriceGlobalVariableUpdater($this->db);
				$updater_obj->id = $record["rowid"];
				$updater_obj->type = $record["type"];
				$updater_obj->description		= $record["description"];
				$updater_obj->parameters = $record["parameters"];
				$updater_obj->fk_variable		= $record["fk_variable"];
				$updater_obj->update_interval = $record["update_interval"];
				$updater_obj->next_update		= $record["next_update"];
				$updater_obj->last_status		= $record["last_status"];
				$updater_obj->checkParameters();
				$retarray[] = $updater_obj;
			}

			$this->db->free($resql);
			return $retarray;
		} else {
			$this->error = $this->db->error();
			return -1;
		}
	}

	/**
	 *  Handles the processing of this updater
	 *
	 *  @return	int					 <0 if KO, 0 if OK but no global variable found, >0 if OK
	 */
	public function process()
	{
		global $langs, $user;
		$langs->load("errors");
		dol_syslog(__METHOD__, LOG_DEBUG);

		$this->error = null;
		$this->checkParameters();

		//Try to load the target global variable and abort if fails
		if ($this->fk_variable < 1) {
			$this->error = $langs->trans("ErrorGlobalVariableUpdater5");
			return 0;
		}
		$price_globals = new PriceGlobalVariable($this->db);
		$res = $price_globals->fetch($this->fk_variable);
		if ($res < 1) {
			$this->error = $langs->trans("ErrorGlobalVariableUpdater5");
			return 0;
		}

		//Process depending of type
		if ($this->type == 0 || $this->type == 1) {
			//Get and check if required parameters are present
			$parameters = json_decode($this->parameters, true);
			if (!isset($parameters)) {
				$this->error = $langs->trans("ErrorGlobalVariableUpdater1", $this->parameters);
				return -1;
			}
			$url = $parameters['URL'];
			if (!isset($url)) {
				$this->error = $langs->trans("ErrorGlobalVariableUpdater2", 'URL');
				return -1;
			}
			$value = $parameters['VALUE'];
			if (!isset($value)) {
				$this->error = $langs->trans("ErrorGlobalVariableUpdater2", 'VALUE');
				return -1;
			}
			$result = "";
			if ($this->type == 0) {
				// Call JSON request
				include_once DOL_DOCUMENT_ROOT.'/core/lib/geturl.lib.php';
				$tmpresult = getURLContent($url, 'GET', '', 1, array(), array('http', 'https'), 0);
				$code = $tmpresult['http_code'];
				$result = $tmpresult['content'];

				if (!isset($result)) {
					$this->error = $langs->trans("ErrorGlobalVariableUpdater0", "empty response");
					return -1;
				}
				if ($code !== 200) {
					$this->error = $langs->trans("ErrorGlobalVariableUpdater0", $code.' '.$tmpresult['curl_error_msg']);
					return -1;
				}

				//Decode returned response
				$result = json_decode($result, true);
			} elseif ($this->type == 1) {
				$ns = $parameters['NS'];
				if (!isset($ns)) {
					$this->error = $langs->trans("ErrorGlobalVariableUpdater2", 'NS');
					return -1;
				}
				$method = $parameters['METHOD'];
				if (!isset($method)) {
					$this->error = $langs->trans("ErrorGlobalVariableUpdater2", 'METHOD');
					return -1;
				}
				$data = $parameters['DATA'];
				if (!isset($data)) {
					$this->error = $langs->trans("ErrorGlobalVariableUpdater2", 'DATA');
					return -1;
				}

				//SOAP client
				require_once NUSOAP_PATH.'/nusoap.php';
				$soap_client = new nusoap_client($url);
				$soap_client->soap_defencoding = 'UTF-8';
				$soap_client->decodeUTF8(false);
				$result = $soap_client->call($method, $data, $ns, '');

				//Check if result is a error
				if ($result === false) {
					$this->error = $langs->trans("ErrorGlobalVariableUpdater4", $soap_client->error_str);
					return -1;
				}
			}

			//Explode value and walk for each key in value array to get the relevant key
			$value = explode(',', $value);
			foreach ($value as $key) {
				$result = $result[$key];
			}
			if (!isset($result)) {
				$this->error = $langs->trans("ErrorGlobalVariableUpdater3");
				return -1;
			}

			//Save data to global and update it
			$price_globals->value = $result;
			$price_globals->update($user);
		}
		return 1;
	}

	// phpcs:disable PEAR.NamingConventions.ValidFunctionName.ScopeNotCamelCaps
	/**
	 *  Update next_update into database
	 *
	 *  @param	string	$next_update Next update to write
	 *  @param	User	$user        User that modifies
	 *  @param  int		$notrigger	 0=launch triggers after, 1=disable triggers
	 *  @return int     		   	 <0 if KO, >0 if OK
	 */
	public function update_next_update($next_update, $user = 0, $notrigger = 0)
	{
		// phpcs:enable
		$error = 0;

		$this->next_update = $next_update;
		$this->checkParameters();

		// Update request
		$sql = "UPDATE ".$this->db->prefix().$this->table_element." SET";
		$sql .= " next_update = ".$this->next_update;
		$sql .= " WHERE rowid = ".((int) $this->id);

		$this->db->begin();

		dol_syslog(__METHOD__);
		$resql = $this->db->query($sql);
		if (!$resql) {
			$error++; $this->errors[] = "Error ".$this->db->lasterror();
		}

		// Commit or rollback
		if ($error) {
			foreach ($this->errors as $errmsg) {
				dol_syslog(__METHOD__." ".$errmsg, LOG_ERR);
				$this->error .= ($this->error ? ', '.$errmsg : $errmsg);
			}
			$this->db->rollback();
			return -1 * $error;
		} else {
			$this->db->commit();
			return 1;
		}
	}

	// phpcs:disable PEAR.NamingConventions.ValidFunctionName.ScopeNotCamelCaps
	/**
	 *  Update last_status into database
	 *
	 *  @param	string	$last_status Status to write
	 *  @param	User	$user        User that modifies
	 *  @param  int		$notrigger	 0=launch triggers after, 1=disable triggers
	 *  @return int     		   	 <0 if KO, >0 if OK
	 */
	public function update_status($last_status, $user = 0, $notrigger = 0)
	{
		// phpcs:enable
		$error = 0;

		$this->last_status = $last_status;
		$this->checkParameters();

		// Update request
		$sql = "UPDATE ".$this->db->prefix().$this->table_element." SET";
		$sql .= " last_status = ".(isset($this->last_status) ? "'".$this->db->escape($this->last_status)."'" : "''");
		$sql .= " WHERE rowid = ".((int) $this->id);

		$this->db->begin();

		dol_syslog(__METHOD__);
		$resql = $this->db->query($sql);
		if (!$resql) {
			$error++; $this->errors[] = "Error ".$this->db->lasterror();
		}

		// Commit or rollback
		if ($error) {
			foreach ($this->errors as $errmsg) {
				dol_syslog(__METHOD__." ".$errmsg, LOG_ERR);
				$this->error .= ($this->error ? ', '.$errmsg : $errmsg);
			}
			$this->db->rollback();
			return -1 * $error;
		} else {
			$this->db->commit();
			return 1;
		}
	}
}
