<?php
namespace ProcessMaker\BusinessModel;

use Content;
use ContentPeer;
use Criteria;
use DbConnections;
use DbSource;
use DbSourcePeer;
use Exception;
use G;
use Net;
use Process;
use ResultSet;

class DataBaseConnection
{
    /**
     * List of DataBaseConnections in process
     * @var string $pro_uid. Uid for Process
     *
     * @author Brayan Pereyra (Cochalo) <brayan@colosa.com>
     * @copyright Colosa - Bolivia
     *
     * @return array
     */
    public function getDataBaseConnections($pro_uid)
    {
        $pro_uid = $this->validateProUid($pro_uid);

        $oDBSource = new DbSource();
        $oCriteria = $oDBSource->getCriteriaDBSList($pro_uid);

        $rs = DbSourcePeer::doSelectRS($oCriteria);
        $rs->setFetchmode( ResultSet::FETCHMODE_ASSOC );
        $rs->next();

        $dbConnecions = array();
        while ($row = $rs->getRow()) {
            $row = array_change_key_case($row, CASE_LOWER);
            $dataDb = $this->getDataBaseConnection($pro_uid, $row['dbs_uid'], false);

            if($dataDb["dbs_type"] == "oracle" && $dataDb["dbs_connection_type"] == "TNS") {
                $dataDb["dbs_server"] = "[" . $dataDb["dbs_tns"] . "]";
                $dataDb["dbs_database_name"] = "[" . $dataDb["dbs_tns"] . "]";
            }

            $dbConnecions[] = array_change_key_case($dataDb, CASE_LOWER);
            $rs->next();
        }
        return $dbConnecions;
    }

    /**
     * Get data for DataBaseConnection
     * @var string $pro_uid. Uid for Process
     * @var string $dbs_uid. Uid for Data Base Connection
     *
     * @author Brayan Pereyra (Cochalo) <brayan@colosa.com>
     * @copyright Colosa - Bolivia
     *
     * return object
     */
    public function getDataBaseConnection($pro_uid, $dbs_uid, $validate = true)
    {
        try {
            if ($validate) {
                $pro_uid = $this->validateProUid($pro_uid);
                $dbs_uid = $this->validateDbsUid($dbs_uid, $pro_uid);
            }

            $dbs = new DbConnections($pro_uid);
            $oDBConnection = new DbSource();
            $aFields = $oDBConnection->load($dbs_uid, $pro_uid);
            if ($aFields['DBS_PORT'] == '0') {
                $aFields['DBS_PORT'] = '';
            }
            $aFields['DBS_PASSWORD'] = $dbs->getPassWithoutEncrypt($aFields);

            $aFields['DBS_DATABASE_DESCRIPTION'] = '';

            $dbDescription = '';

            $criteria2 = new Criteria('workflow');

            $criteria2->addSelectColumn(ContentPeer::CON_VALUE);
            $criteria2->add(ContentPeer::CON_ID, $aFields['DBS_UID'], Criteria::EQUAL);

            $rsCriteria2 = ContentPeer::doSelectRS($criteria2);
            $rsCriteria2->setFetchmode(ResultSet::FETCHMODE_ASSOC);

            if ($rsCriteria2->next()) {
                $row2 = $rsCriteria2->getRow();

                if ($row2['CON_VALUE'] != '') {
                    $dbDescription = ' - [' . $row2['CON_VALUE'] . ']';
                }
            }

            if($aFields['DBS_TYPE'] == 'oracle' && $aFields['DBS_CONNECTION_TYPE'] == 'TNS') {
                $aFields['DBS_DATABASE_DESCRIPTION'] = '[' . $aFields['DBS_TNS'] . ']' . $dbDescription;
            } else {
                $aFields['DBS_DATABASE_DESCRIPTION'] = $dbDescription;
            }

            $response = array_change_key_case($aFields, CASE_LOWER);
            return $response;
        } catch (Exception $e) {
            throw $e;
        }
    }

    /**
     * Save Data for DataBaseConnection
     * @var string $pro_uid. Uid for Process
     * @var string $dataDataBaseConnection. Data for DataBaseConnection
     * @var string $create. Create o Update DataBaseConnection
     * @var string $sDataBaseConnectionUid. Uid for DataBaseConnection
     *
     * @author Brayan Pereyra (Cochalo) <brayan@colosa.com>
     * @copyright Colosa - Bolivia
     *
     * @return array
     */
    public function saveDataBaseConnection($pro_uid = '', $dataDBConnection = array(), $create = false)
    {
        $pro_uid = $this->validateProUid($pro_uid);
        if (!$create) {
            $dbs_uid = $dataDBConnection['dbs_uid'];
            $dbs_uid = $this->validateDbsUid($dbs_uid, $pro_uid);
        }

        $oDBSource = new DbSource();
        $oContent  = new Content();
        $dataDBConnection = array_change_key_case($dataDBConnection, CASE_UPPER);
        
        $dataDBConnection['PRO_UID'] = $pro_uid;

        if (isset($dataDBConnection['DBS_TYPE'])) {
            $typesExists = array();
            $dbServices = $this->getDbEngines();
            foreach ($dbServices as $value) {
                $typesExists[] = $value['id'];
            }
            if (!in_array($dataDBConnection['DBS_TYPE'], $typesExists)) {
                throw (new Exception(G::LoadTranslation("ID_DBC_TYPE_INVALID", array($dataDBConnection['DBS_TYPE']))));
            }
        }

        if ($dataDBConnection["DBS_TYPE"] == "oracle") {
            if (empty($dataDBConnection["DBS_CONNECTION_TYPE"])) {
                throw (new Exception(G::LoadTranslation("ID_UNDEFINED_VALUE_IS_REQUIRED", ["dbs_connection_type"])));
            }
            if ($dataDBConnection["DBS_CONNECTION_TYPE"] == "TNS") {
                if (empty($dataDBConnection["DBS_TNS"])) {
                    throw (new Exception(G::LoadTranslation("ID_UNDEFINED_VALUE_IS_REQUIRED", ["dbs_tns"])));
                }
            }
        }

        $flagTns = ($dataDBConnection["DBS_TYPE"] == "oracle" && $dataDBConnection["DBS_CONNECTION_TYPE"] == "TNS") ? 1 : 0;

        if (isset($dataDBConnection["DBS_SERVER"]) && $dataDBConnection["DBS_SERVER"] == "" && $flagTns == 0) {
            throw (new Exception(G::LoadTranslation("ID_DBC_SERVER_INVALID", array($dataDBConnection['DBS_SERVER']))));
        }

        if (isset($dataDBConnection["DBS_DATABASE_NAME"]) && $dataDBConnection["DBS_DATABASE_NAME"] == "" && $flagTns == 0) {
            throw (new Exception(G::LoadTranslation("ID_DBC_DBNAME_INVALID", array($dataDBConnection['DBS_DATABASE_NAME']))));
        }

        if (isset($dataDBConnection['DBS_PORT']) &&
            ($dataDBConnection['DBS_PORT'] == ''|| $dataDBConnection['DBS_PORT'] == 0)) {
                if ($flagTns == 0) {
                    throw (new Exception(G::LoadTranslation("ID_DBC_PORT_INVALID", array($dataDBConnection["DBS_PORT"]))));
                }
        }

        if (isset($dataDBConnection["DBS_TNS"]) && $dataDBConnection["DBS_TNS"] == "" && $flagTns == 1) {
            throw (new Exception(G::LoadTranslation("ID_DBC_TNS_NOT_EXIST", array($dataDBConnection["DBS_TNS"]))));
        }

        if (isset($dataDBConnection['DBS_ENCODE'])) {
            $encodesExists = array();
            $dbs = new DbConnections();
            $dbEncodes = $dbs->getEncondeList($dataDBConnection['DBS_TYPE']);
            foreach ($dbEncodes as $value) {
                $encodesExists[] = $value['0'];
            }
            if (!in_array($dataDBConnection['DBS_ENCODE'], $encodesExists)) {
                throw (new Exception(G::LoadTranslation("ID_DBC_ENCODE_INVALID", array($dataDBConnection['DBS_ENCODE']))));
            }
        }

        $passOrigin = '';
        if (isset($dataDBConnection['DBS_PASSWORD'])) {
            $passOrigin = $dataDBConnection['DBS_PASSWORD'];
            if ($dataDBConnection['DBS_PASSWORD'] == 'none') {
                $dataDBConnection['DBS_PASSWORD'] = '';
            } else {
                if ($flagTns == 0) {
                    $pass = G::encrypt( $dataDBConnection["DBS_PASSWORD"], $dataDBConnection["DBS_DATABASE_NAME"]) . "_2NnV3ujj3w";
                } else {
                    $pass = G::encrypt($dataDBConnection["DBS_PASSWORD"], $dataDBConnection["DBS_TNS"]) . "_2NnV3ujj3w";
                }

                $dataDBConnection['DBS_PASSWORD'] = $pass;
            }
        }

        if ($flagTns == 0) {
            $dataDBConnection["DBS_CONNECTION_TYPE"] = "NORMAL";
            $dataDBConnection["DBS_TNS"] = "";
        } else {
            $dataDBConnection["DBS_SERVER"] = "";
            $dataDBConnection["DBS_DATABASE_NAME"] = "";
            $dataDBConnection["DBS_PORT"] = 0;
        }

        if ($create) {
            unset($dataDBConnection['DBS_UID']);
            // TEST CONNECTION
            $dataTest = array_merge($dataDBConnection, array('DBS_PASSWORD' => $passOrigin));
            $resTest = $this->testConnection($dataTest);
            if (!$resTest['resp']) {
                throw (new Exception($resTest['message']));
            }
            $newDBConnectionUid = $oDBSource->create($dataDBConnection);
            $oContent->addContent('DBS_DESCRIPTION', '', $newDBConnectionUid,
                SYS_LANG, $dataDBConnection['DBS_DESCRIPTION'] );
            $newDataDBConnection = $this->getDataBaseConnection($pro_uid, $newDBConnectionUid);
            $newDataDBConnection = array_change_key_case($newDataDBConnection, CASE_LOWER);
            return $newDataDBConnection;
        } else {
            // TEST CONNECTION
            $allData = $this->getDataBaseConnection($pro_uid, $dataDBConnection['DBS_UID']);
            $dataTest = array_merge($allData, $dataDBConnection, array('DBS_PASSWORD' => $passOrigin));
            $resTest = $this->testConnection($dataTest);
            if (!$resTest['resp']) {
                throw (new Exception($resTest['message']));
            }
            $oDBSource->update($dataDBConnection);
            if (isset($dataDBConnection['DBS_DESCRIPTION'])) {
                $oContent->addContent('DBS_DESCRIPTION', '', $dataDBConnection['DBS_UID'],
                    SYS_LANG, $dataDBConnection['DBS_DESCRIPTION'] );
            }
        }
        return array();
    }

    /**
     * Delete DataBaseConnection
     * @var string $pro_uid. Uid for Process
     * @var string $dbs_uid. Uid for DataBase Connection
     *
     * @author Brayan Pereyra (Cochalo) <brayan@colosa.com>
     * @copyright Colosa - Bolivia
     *
     * @return void
     */
    public function deleteDataBaseConnection($pro_uid, $dbs_uid)
    {
        $pro_uid = $this->validateProUid($pro_uid);
        $dbs_uid = $this->validateDbsUid($dbs_uid, $pro_uid);

        $oDBSource = new DbSource();
        $oContent  = new Content();

        $oDBSource->remove($dbs_uid, $pro_uid);
        $oContent->removeContent( 'DBS_DESCRIPTION', "", $dbs_uid );
    }

    /**
     * Test DataBase Connection
     * @var string $dataCon. Data for DataBase Connection
     * @var string $returnArray. Flag for url
     *
     * @author Brayan Pereyra (Cochalo) <brayan@colosa.com>
     * @copyright Colosa - Bolivia
     *
     * @return void
     */
    public function testConnection($dataCon, $returnArray = false)
    {
        $resp = array();
        $respTest = array();
        $resp['resp'] = false;

        $dataCon = array_change_key_case($dataCon, CASE_UPPER);

        $flagTns = ($dataCon["DBS_TYPE"] == "oracle" && $dataCon["DBS_CONNECTION_TYPE"] == "TNS")? 1 : 0;

        if ($flagTns == 0) {
            $Server = new Net($dataCon['DBS_SERVER']);

            // STEP 1 : Resolving Host Name
            $respTest['0'] = array();
            $respTest['0']['test'] = G::loadTranslation('RESOLVING_NAME') . ' ' .$dataCon['DBS_SERVER'];
            if ($Server->getErrno() != 0) {
                if ($returnArray) {
                    $respTest['0']['error'] = G::loadTranslation('ID_ERROR_HOST_NAME_FAILED') . ' : ' . $Server->error;
                } else {
                    $resp['message'] = G::loadTranslation('ID_ERROR_HOST_NAME_FAILED') . ' : ' . $Server->error;
                    return $resp;
                }
            }

            // STEP 2 : Checking port
            $respTest['1'] = array();
            $respTest['1']['test'] = G::loadTranslation('ID_CHECK_PORT') . ' ' . $dataCon['DBS_PORT'];
            $Server->scannPort($dataCon['DBS_PORT']);
            if ($Server->getErrno() != 0) {
                if ($returnArray) {
                    $respTest['1']['error'] = G::loadTranslation('ID_CHECK_PORT_FAILED') . ' : ' . $Server->error;
                } else {
                    $resp['message'] = G::loadTranslation('ID_CHECK_PORT_FAILED') . ' : ' . $Server->error;
                    return $resp;
                }
            }

            // STEP 3 : Trying to connect to host
            $respTest['2'] = array();
            $respTest['2']['test'] = G::loadTranslation('ID_CONNECTING_TO_HOST') . ' ' . $dataCon['DBS_SERVER'] . (($dataCon['DBS_PORT'] != '') ? ':'.$dataCon['DBS_PORT'] : '');
            $Server->loginDbServer($dataCon['DBS_USERNAME'], $dataCon['DBS_PASSWORD']);
            $Server->setDataBase($dataCon['DBS_DATABASE_NAME'], $dataCon['DBS_PORT']);
            if ($Server->errno == 0) {
                $response = $Server->tryConnectServer($dataCon['DBS_TYPE']);
                if ($response->status != 'SUCCESS') {
                    if ($returnArray) {
                        $respTest['2']['error'] = G::loadTranslation('ID_CONNECTING_TO_HOST_FAILED') . ' : ' . $Server->error;
                    } else {
                        $resp['message'] = G::loadTranslation('ID_CONNECTING_TO_HOST_FAILED') . ' : ' . $Server->error;
                        return $resp;
                    }
                }
            } else {
                if ($returnArray) {
                    $respTest['2']['error'] = G::loadTranslation('ID_CONNECTING_TO_HOST_FAILED') . ' : ' . $Server->error;
                } else {
                    $resp['message'] = G::loadTranslation('ID_CONNECTING_TO_HOST_FAILED') . ' : ' . $Server->error;
                    return $resp;
                }
            }

            // STEP 4 : Trying to open database
            $respTest['3'] = array();
            $respTest['3']['test'] = G::loadTranslation('ID_OPEN_DATABASE') . ' [' . $dataCon['DBS_DATABASE_NAME'] . ']';
            $Server->loginDbServer($dataCon['DBS_USERNAME'], $dataCon['DBS_PASSWORD']);
            $Server->setDataBase($dataCon['DBS_DATABASE_NAME'], $dataCon['DBS_PORT']);
            if ($Server->errno == 0) {
                $response = $Server->tryConnectServer($dataCon['DBS_TYPE']);
                if ($response->status == 'SUCCESS') {
                    $response = $Server->tryOpenDataBase($dataCon['DBS_TYPE']);
                    if ($response->status != 'SUCCESS') {
                        if ($returnArray) {
                            $respTest['3']['error'] = G::loadTranslation('ID_CONNECTING_TO_DATABASE_FAILED') . ' : ' . $Server->error;
                        } else {
                            $resp['message'] = G::loadTranslation('ID_CONNECTING_TO_DATABASE_FAILED') . ' : ' . $Server->error;
                            return $resp;
                        }
                    }
                } else {
                    if ($returnArray) {
                        $respTest['3']['error'] = G::loadTranslation('ID_CONNECTING_TO_DATABASE_FAILED') . ' : ' . $Server->error;
                    } else {
                        $resp['message'] = G::loadTranslation('ID_CONNECTING_TO_DATABASE_FAILED') . ' : ' . $Server->error;
                        return $resp;
                    }
                }
            } else {
                if ($returnArray) {
                    $respTest['3']['error'] = G::loadTranslation('ID_CONNECTING_TO_DATABASE_FAILED') . ' : ' . $Server->error;
                } else {
                    $resp['message'] = G::loadTranslation('ID_CONNECTING_TO_DATABASE_FAILED') . ' : ' . $Server->error;
                    return $resp;
                }
            }
        } else {
            $net = new Net();

            //STEP 0: Trying to open database type TNS
            $respTest["0"] = array();
            $respTest["0"]["test"] = G::loadTranslation('ID_TEST_DATABASE_ORACLE_TNS') . ' ' . $dataCon["DBS_TNS"];

            $net->loginDbServer($dataCon["DBS_USERNAME"], $dataCon["DBS_PASSWORD"]);

            if ($net->errno == 0) {
                $arrayServerData = array("connectionType" => $dataCon["DBS_CONNECTION_TYPE"], "tns" => $dataCon["DBS_TNS"]);

                $response = $net->tryConnectServer($dataCon["DBS_TYPE"], $arrayServerData);

                if ($response->status == "SUCCESS") {
                    $response = $net->tryOpenDataBase($dataCon["DBS_TYPE"], $arrayServerData);

                    if ($response->status != "SUCCESS") {
                        if ($returnArray) {
                            $respTest["0"]["error"] = G::loadTranslation('ID_TEST_ERROR_ORACLE_TNS') . ', ' . $net->error;
                        } else {
                            $resp["message"] = G::loadTranslation('ID_TEST_ERROR_ORACLE_TNS') . ', ' . $net->error;

                            //Return
                            return $resp;
                        }
                    }
                } else {
                    if ($returnArray) {
                        $respTest["0"]["error"] = G::loadTranslation('ID_TEST_ERROR_ORACLE_TNS') . ', ' . $net->error;
                    } else {
                        $resp["message"] = G::loadTranslation('ID_TEST_ERROR_ORACLE_TNS') . ', ' . $net->error;

                        //Return
                        return $resp;
                    }
                }
            } else {
                if ($returnArray) {
                    $respTest["0"]["error"] = G::loadTranslation('ID_TEST_ERROR_ORACLE_TNS') . ', ' . $net->error;
                } else {
                    $resp["message"] = G::loadTranslation('ID_TEST_ERROR_ORACLE_TNS') . ', ' . $net->error;

                    //Return
                    return $resp;
                }
            }
        }

        if ($returnArray) {
            return $respTest;
        } else {
            // CORRECT CONNECTION
            $resp['resp'] = true;
            return $resp;
        }
    }

    /**
     * Get Data Base Engines
     *
     * @author Brayan Pereyra (Cochalo) <brayan@colosa.com>
     * @copyright Colosa - Bolivia
     *
     * @return array
     */
    public function getDbEngines ()
    {
        $dbs = new DbConnections();
        $dbServices = $dbs->getDbServicesAvailables();
        return $dbServices;
    }

    /**
     * Validate Process Uid
     * @var string $pro_uid. Uid for process
     *
     * @author Brayan Pereyra (Cochalo) <brayan@colosa.com>
     * @copyright Colosa - Bolivia
     *
     * @return string
     */
    public function validateProUid ($pro_uid)
    {
        $pro_uid = trim($pro_uid);
        if ($pro_uid == '') {
            throw (new Exception(G::LoadTranslation("ID_PROJECT_NOT_EXIST", array('prj_uid',''))));
        }
        $oProcess = new Process();
        if (!($oProcess->processExists($pro_uid))) {
            throw (new Exception(G::LoadTranslation("ID_PROJECT_NOT_EXIST", array('prj_uid', $pro_uid))));
        }
        return $pro_uid;
    }

    /**
     * Validate DataBase Connection Uid
     * @var string $pro_uid. Uid for process
     * @var string $dbs_uid. Uid for process
     *
     * @author Brayan Pereyra (Cochalo) <brayan@colosa.com>
     * @copyright Colosa - Bolivia
     *
     * @return string
     */
    public function validateDbsUid ($dbs_uid, $pro_uid)
    {
        $dbs_uid = trim($dbs_uid);
        if ($dbs_uid == '') {
            throw (new Exception(G::LoadTranslation("ID_DBC_NOT_EXIST", array('dbs_uid',''))));
        }
        $oDBSource = new DbSource();
        if (!($oDBSource->Exists($dbs_uid, $pro_uid))) {
            throw (new Exception(G::LoadTranslation("ID_DBC_NOT_EXIST", array('dbs_uid',$dbs_uid))));
        }
        return $dbs_uid;
    }
}