/* Copyright (c) 2018, 2022, Oracle and/or its affiliates. */

/******************************************************************************
 *
 * This software is dual-licensed to you under the Universal Permissive License
 * (UPL) 1.0 as shown at https://oss.oracle.com/licenses/upl and Apache License
 * 2.0 as shown at http://www.apache.org/licenses/LICENSE-2.0. You may choose
 * either license.
 *
 * If you elect to accept the software under the Apache License, Version 2.0,
 * the following applies:
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * NAME
 *   em_dmlreturn1.js
 *
 * DESCRIPTION
 *   executeMany() example of DML RETURNING that returns single values.
 *
 *   This example requires node-oracledb 2.2 or later.
 *
 *   This example uses Node 8's async/await syntax.
 *
x *****************************************************************************/

const fs = require('fs');
const oracledb = require('oracledb');
const dbConfig = require('./dbconfig.js');
const demoSetup = require('./demosetup.js');

// On Windows and macOS, you can specify the directory containing the Oracle
// Client Libraries at runtime, or before Node.js starts.  On other platforms
// the system library search path must always be set before Node.js is started.
// See the node-oracledb installation documentation.
// If the search path is not correct, you will get a DPI-1047 error.
let libPath;
if (process.platform === 'win32') {           // Windows
  libPath = 'C:\\oracle\\instantclient_19_12';
} else if (process.platform === 'darwin') {   // macOS
  libPath = process.env.HOME + '/Downloads/instantclient_19_8';
}
if (libPath && fs.existsSync(libPath)) {
  oracledb.initOracleClient({ libDir: libPath });
}

const sql = "INSERT INTO no_em_tab VALUES (:1, :2) RETURNING ROWID, id, val INTO :3, :4, :5";

const binds = [
  [1, "Test 1 (One)"],
  [2, "Test 2 (Two)"],
  [3, "Test 3 (Three)"],
  [4, null],
  [5, "Test 5 (Five)"]
];

const options = {
  bindDefs: [
    { type: oracledb.NUMBER },
    { type: oracledb.STRING, maxSize: 20 },
    { type: oracledb.STRING, maxSize: 18, dir: oracledb.BIND_OUT },
    { type: oracledb.NUMBER, dir: oracledb.BIND_OUT },
    { type: oracledb.STRING, maxSize: 25, dir: oracledb.BIND_OUT }
  ]
};

async function run() {
  let connection;

  try {
    connection = await oracledb.getConnection(dbConfig);

    await demoSetup.setupEm(connection);  // create the demo tables

    const result = await connection.executeMany(sql, binds, options);

    console.log("rowsAffected is:", result.rowsAffected);
    console.log("Out binds:");
    for (let i = 0; i < result.outBinds.length; i++) {
      console.log("-->", result.outBinds[i]);
    }

  } catch (err) {
    console.error(err);
  } finally {
    if (connection) {
      try {
        await connection.close();
      } catch (err) {
        console.error(err);
      }
    }
  }
}

run();