<?php
/*
 * Copyright (C) 2016 Xebax Christy <xebax@wanadoo.fr>
 *
 * 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/>.
 */

use Luracast\Restler\RestException;

require_once DOL_DOCUMENT_ROOT.'/compta/bank/class/account.class.php';

/**
 * API class for accounts
 *
 * @property DoliDB db
 * @access protected
 * @class DolibarrApiAccess {@requires user,external}
 */
class BankAccounts extends DolibarrApi
{

	/**
	 * array $FIELDS Mandatory fields, checked when creating an object
	 */
	static $FIELDS = array(
		'ref',
		'label',
		'type',
		'currency_code',
		'country_id'
	);

	/**
	 * Constructor
	 */
	public function __construct()
	{
		global $db;
		$this->db = $db;
	}

	/**
	 * Get the list of accounts.
	 *
	 * @param string    $sortfield  Sort field
	 * @param string    $sortorder  Sort order
	 * @param int       $limit      Limit for list
	 * @param int       $page       Page number
	 * @param  int    	$category   Use this param to filter list by category
	 * @param string    $sqlfilters Other criteria to filter answers separated by a comma. Syntax example "(t.ref:like:'SO-%') and (t.import_key:<:'20160101')"
	 * @return array                List of account objects
	 *
	 * @throws RestException
	 */
	public function index($sortfield = "t.rowid", $sortorder = 'ASC', $limit = 100, $page = 0, $category = 0, $sqlfilters = '')
	{
		$list = array();

		if (!DolibarrApiAccess::$user->rights->banque->lire) {
			throw new RestException(401);
		}

		$sql = "SELECT rowid FROM ".MAIN_DB_PREFIX."bank_account as t";
		if ($category > 0) {
			$sql .= ", ".MAIN_DB_PREFIX."categorie_account as c";
		}
		$sql .= ' WHERE t.entity IN ('.getEntity('bank_account').')';
		// Select accounts of given category
		if ($category > 0) {
			$sql .= " AND c.fk_categorie = ".$this->db->escape($category)." AND c.fk_account = t.rowid ";
		}
		// Add sql filters
		if ($sqlfilters)
		{
			if (!DolibarrApi::_checkFilters($sqlfilters))
			{
				throw new RestException(503, 'Error when validating parameter sqlfilters '.$sqlfilters);
			}
			$regexstring = '\(([^:\'\(\)]+:[^:\'\(\)]+:[^:\(\)]+)\)';
			$sql .= " AND (".preg_replace_callback('/'.$regexstring.'/', 'DolibarrApi::_forge_criteria_callback', $sqlfilters).")";
		}

		$sql .= $this->db->order($sortfield, $sortorder);
		if ($limit) {
			if ($page < 0)
			{
				$page = 0;
			}
			$offset = $limit * $page;

			$sql .= $this->db->plimit($limit + 1, $offset);
		}

		dol_syslog("API Rest request");
		$result = $this->db->query($sql);

		if ($result) {
			$num = $this->db->num_rows($result);
			$min = min($num, ($limit <= 0 ? $num : $limit));
			for ($i = 0; $i < $min; $i++) {
				$obj = $this->db->fetch_object($result);
				$account = new Account($this->db);
				if ($account->fetch($obj->rowid) > 0) {
					$list[] = $this->_cleanObjectDatas($account);
				}
			}
		} else {
			throw new RestException(503, 'Error when retrieving list of accounts: '.$this->db->lasterror());
		}

		return $list;
	}

	/**
	 * Get account by ID.
	 *
	 * @param int    $id    ID of account
	 * @return array Account object
	 *
	 * @throws RestException
	 */
	public function get($id)
	{
		if (!DolibarrApiAccess::$user->rights->banque->lire) {
			throw new RestException(401);
		}

		$account = new Account($this->db);
		$result = $account->fetch($id);
		if (!$result) {
			throw new RestException(404, 'account not found');
		}

		return $this->_cleanObjectDatas($account);
	}

	/**
	 * Create account object
	 *
	 * @param array $request_data    Request data
	 * @return int ID of account
	 */
	public function post($request_data = null)
	{
		if (!DolibarrApiAccess::$user->rights->banque->configurer) {
			throw new RestException(401);
		}
		// Check mandatory fields
		$result = $this->_validate($request_data);

		$account = new Account($this->db);
		foreach ($request_data as $field => $value) {
			$account->$field = $value;
		}
		// Date of the initial balance (required to create an account).
		$account->date_solde = time();
		// courant and type are the same thing but the one used when
		// creating an account is courant
		$account->courant = $account->type;

		if ($account->create(DolibarrApiAccess::$user) < 0) {
			throw new RestException(500, 'Error creating bank account', array_merge(array($account->error), $account->errors));
		}
		return $account->id;
	}

	/**
	 * Create an internal wire transfer between two bank accounts
	 *
	 * @param int     $bankaccount_from_id  BankAccount ID to use as the source of the internal wire transfer		{@from body}{@required true}
	 * @param int     $bankaccount_to_id    BankAccount ID to use as the destination of the internal wire transfer  {@from body}{@required true}
	 * @param string  $date					Date of the internal wire transfer (UNIX timestamp)						{@from body}{@required true}{@type timestamp}
	 * @param string  $description			Description of the internal wire transfer								{@from body}{@required true}
	 * @param float	  $amount				Amount to transfer from the source to the destination BankAccount		{@from body}{@required true}
	 * @param float	  $amount_to			Amount to transfer to the destination BankAccount (only when accounts does not share the same currency)		{@from body}{@required false}
	 *
	 * @url POST    /transfer
	 *
	 * @return array
	 *
	 * @status 201
	 *
	 * @throws RestException 401 Unauthorized: User does not have permission to configure bank accounts
	 * @throws RestException 404 Not Found: Either the source or the destination bankaccount for the provided id does not exist
	 * @throws RestException 422 Unprocessable Entity: Refer to detailed exception message for the cause
	 * @throws RestException 500 Internal Server Error: Error(s) returned by the RDBMS
	 */
	public function transfer($bankaccount_from_id = 0, $bankaccount_to_id = 0, $date = null, $description = "", $amount = 0.0, $amount_to = 0.0)
	{
		if (!DolibarrApiAccess::$user->rights->banque->configurer) {
			throw new RestException(401);
		}

		if ($bankaccount_from_id === $bankaccount_to_id) {
			throw new RestException(422, 'bankaccount_from_id and bankaccount_to_id must be different !');
		}

		require_once DOL_DOCUMENT_ROOT.'/compta/bank/class/account.class.php';

		$accountfrom = new Account($this->db);
		$resultAccountFrom = $accountfrom->fetch($bankaccount_from_id);

		if ($resultAccountFrom === 0) {
			throw new RestException(404, 'The BankAccount for bankaccount_from_id provided does not exist.');
		}

		$accountto = new Account($this->db);
		$resultAccountTo = $accountto->fetch($bankaccount_to_id);

		if ($resultAccountTo === 0) {
			throw new RestException(404, 'The BankAccount for bankaccount_to_id provided does not exist.');
		}

		if ($accountto->currency_code == $accountfrom->currency_code)
		{
			$amount_to = $amount;
		} else {
			if (!$amount_to || empty($amount_to))
			{
				throw new RestException(422, 'You must provide amount_to value since bankaccount_from and bankaccount_to does not share the same currency.');
			}
		}

		$this->db->begin();

		$error = 0;
		$bank_line_id_from = 0;
		$bank_line_id_to = 0;
		$result = 0;
		$user = DolibarrApiAccess::$user;

		// By default, electronic transfert from bank to bank
		$typefrom = 'PRE';
		$typeto = 'VIR';

		if ($accountto->courant == Account::TYPE_CASH || $accountfrom->courant == Account::TYPE_CASH)
		{
			// This is transfer of change
			$typefrom = 'LIQ';
			$typeto = 'LIQ';
		}

		/**
		 * Creating bank line records
		 */

		if (!$error) {
			$bank_line_id_from = $accountfrom->addline($date, $typefrom, $description, -1 * price2num($amount), '', '', $user);
		}
		if (!($bank_line_id_from > 0)) {
			$error++;
		}

		if (!$error) {
			$bank_line_id_to = $accountto->addline($date, $typeto, $description, price2num($amount_to), '', '', $user);
		}
		if (!($bank_line_id_to > 0)) {
			$error++;
		}

		/**
		 * Creating links between bank line record and its source
		 */

		$url = DOL_URL_ROOT.'/compta/bank/line.php?rowid=';
		$label = '(banktransfert)';
		$type = 'banktransfert';

		if (!$error) {
			$result = $accountfrom->add_url_line($bank_line_id_from, $bank_line_id_to, $url, $label, $type);
		}
		if (!($result > 0)) {
			$error++;
		}

		if (!$error) {
			$result = $accountto->add_url_line($bank_line_id_to, $bank_line_id_from, $url, $label, $type);
		}
		if (!($result > 0)) {
			$error++;
		}

		if (!$error)
		{
			$this->db->commit();

			return array(
				'success' => array(
					'code' => 201,
					'message' => 'Internal wire transfer created successfully.'
				)
			);
		} else {
			$this->db->rollback();
			throw new RestException(500, $accountfrom->error.' '.$accountto->error);
		}
	}

	/**
	 * Update account
	 *
	 * @param int    $id              ID of account
	 * @param array  $request_data    data
	 * @return int
	 */
	public function put($id, $request_data = null)
	{
		if (!DolibarrApiAccess::$user->rights->banque->configurer) {
			throw new RestException(401);
		}

		$account = new Account($this->db);
		$result = $account->fetch($id);
		if (!$result) {
			throw new RestException(404, 'account not found');
		}

		foreach ($request_data as $field => $value) {
			if ($field == 'id') continue;
			$account->$field = $value;
		}

		if ($account->update(DolibarrApiAccess::$user) > 0)
		{
			return $this->get($id);
		} else {
			throw new RestException(500, $account->error);
		}
	}

	/**
	 * Delete account
	 *
	 * @param int    $id    ID of account
	 * @return array
	 */
	public function delete($id)
	{
		if (!DolibarrApiAccess::$user->rights->banque->configurer) {
			throw new RestException(401);
		}
		$account = new Account($this->db);
		$result = $account->fetch($id);
		if (!$result) {
			throw new RestException(404, 'account not found');
		}

		if ($account->delete(DolibarrApiAccess::$user) < 0) {
			throw new RestException(401, 'error when deleting account');
		}

		return array(
			'success' => array(
				'code' => 200,
				'message' => 'account deleted'
			)
		);
	}

	/**
	 * Validate fields before creating an object
	 *
	 * @param array|null    $data    Data to validate
	 * @return array
	 *
	 * @throws RestException
	 */
	private function _validate($data)
	{
		$account = array();
		foreach (BankAccounts::$FIELDS as $field) {
			if (!isset($data[$field]))
				throw new RestException(400, "$field field missing");
			$account[$field] = $data[$field];
		}
		return $account;
	}

	// phpcs:disable PEAR.NamingConventions.ValidFunctionName.PublicUnderscore
	/**
	 * Clean sensible object datas
	 *
	 * @param   Object  $object     Object to clean
	 * @return  Object              Object with cleaned properties
	 */
	protected function _cleanObjectDatas($object)
	{
		// phpcs:enable
		$object = parent::_cleanObjectDatas($object);

		unset($object->rowid);

		return $object;
	}

	/**
	 * Get the list of lines of the account.
	 *
	 * @param int $id ID of account
	 * @return array Array of AccountLine objects
	 *
	 * @throws RestException
	 *
	 * @url GET {id}/lines
	 * @param string    $sqlfilters Other criteria to filter answers separated by a comma. Syntax example "(t.ref:like:'SO-%') and (t.import_key:<:'20160101')"
	 */
	public function getLines($id, $sqlfilters = '')
	{
		$list = array();

		if (!DolibarrApiAccess::$user->rights->banque->lire) {
			throw new RestException(401);
		}

		$account = new Account($this->db);
		$result = $account->fetch($id);
		if (!$result) {
			throw new RestException(404, 'account not found');
		}

		$sql = "SELECT rowid FROM ".MAIN_DB_PREFIX."bank ";
		$sql .= " WHERE fk_account = ".$id;

		// Add sql filters
		if ($sqlfilters)
		{
			if (!DolibarrApi::_checkFilters($sqlfilters))
			{
				throw new RestException(503, 'Error when validating parameter sqlfilters '.$sqlfilters);
			}
			$regexstring = '\(([^:\'\(\)]+:[^:\'\(\)]+:[^:\(\)]+)\)';
			$sql .= " AND (".preg_replace_callback('/'.$regexstring.'/', 'DolibarrApi::_forge_criteria_callback', $sqlfilters).")";
		}

		$sql .= " ORDER BY rowid";

		$result = $this->db->query($sql);

		if ($result) {
			$num = $this->db->num_rows($result);
			for ($i = 0; $i < $num; $i++) {
				$obj = $this->db->fetch_object($result);
				$accountLine = new AccountLine($this->db);
				if ($accountLine->fetch($obj->rowid) > 0) {
					$list[] = $this->_cleanObjectDatas($accountLine);
				}
			}
		} else {
			throw new RestException(503, 'Error when retrieving list of account lines: '.$accountLine->error);
		}

		return $list;
	}

	/**
	 * Add a line to an account
	 *
	 * @param int    $id            ID of account
	 * @param int    $date          Payment date (timestamp) {@from body} {@type timestamp}
	 * @param string $type          Payment mode (TYP,VIR,PRE,LIQ,VAD,CB,CHQ...) {@from body}
	 * @param string $label         Label {@from body}
	 * @param float  $amount        Amount (may be 0) {@from body}
	 * @param int    $category      Category
	 * @param string $cheque_number Cheque numberl {@from body}
	 * @param string $cheque_writer Name of cheque writer {@from body}
	 * @param string $cheque_bank   Bank of cheque writer {@from body}
	 * @return int  ID of line
	 *
	 * @url POST {id}/lines
	 */
	public function addLine($id, $date, $type, $label, $amount, $category = 0, $cheque_number = '', $cheque_writer = '', $cheque_bank = '')
	{
		if (!DolibarrApiAccess::$user->rights->banque->modifier) {
			throw new RestException(401);
		}

		$account = new Account($this->db);
		$result = $account->fetch($id);
		if (!$result) {
			throw new RestException(404, 'account not found');
		}

		$result = $account->addline(
			$date,
			$type,
			$label,
			$amount,
			$cheque_number,
			$category,
			DolibarrApiAccess::$user,
			$cheque_writer, $cheque_bank
		);
		if ($result < 0) {
			throw new RestException(503, 'Error when adding line to account: '.$account->error);
		}
		return $result;
	}

	/**
	 * Add a link to an account line
	 *
	 * @param int    $id    		ID of account
	 * @param int    $line_id       ID of account line
	 * @param int    $url_id        ID to set in the URL {@from body}
	 * @param string $url           URL of the link {@from body}
	 * @param string $label         Label {@from body}
	 * @param string $type          Type of link ('payment', 'company', 'member', ...) {@from body}
	 * @return int  ID of link
	 *
	 * @url POST {id}/lines/{line_id}/links
	 */
	public function addLink($id, $line_id, $url_id, $url, $label, $type)
	{
		if (!DolibarrApiAccess::$user->rights->banque->modifier) {
			throw new RestException(401);
		}

		$account = new Account($this->db);
		$result = $account->fetch($id);
		if (!$result) {
			throw new RestException(404, 'account not found');
		}

		$accountLine = new AccountLine($this->db);
		$result = $accountLine->fetch($line_id);
		if (!$result) {
			throw new RestException(404, 'account line not found');
		}

		$result = $account->add_url_line($line_id, $url_id, $url, $label, $type);
		if ($result < 0) {
			throw new RestException(503, 'Error when adding link to account line: '.$account->error);
		}
		return $result;
	}
}
