"use strict";

/**
 * Licensed Materials - Property of IBM
 * IBM Cognos Products: Cognos Analytics
 * Copyright IBM Corp. 2015, 2016
 * US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 */
define(['bi/commons/ui/core/Class', 'doT'], function (Class, dot) {
  'use strict'; //NOSONAR: meant to be strict

  var _singletonInstance = null;
  var StringUtil = Class.extend({
    /**
     * Gets the JDBC Url section
     */
    getJdbcUrl: function getJdbcUrl(cs) {
      var jdbcUrl = "";
      var urlConstant = "URL=";
      var urlStart = cs.indexOf(urlConstant);

      if (urlStart !== -1) {
        var urlEnd;
        var driverConstant = ";DRIVER_NAME=";
        urlEnd = cs.indexOf(driverConstant, urlStart + urlConstant.length);

        if (urlEnd !== -1) {
          jdbcUrl = cs.substring(urlStart + urlConstant.length, urlEnd);
        }
      }

      return jdbcUrl;
    },

    /**
     * Parses host/port/database name for most common format  host:port/databaseName
     */
    parseHost: function parseHost(url) {
      var result = {};
      var pos1 = url.indexOf(":");
      result.serverName = url.substring(0, pos1);
      var pos2 = url.indexOf("/");

      if (pos2 < 0) {
        result.port = url.substring(pos1 + 1);
      } else {
        result.port = url.substring(pos1 + 1, pos2);
        result.databaseName = url.substring(pos2 + 1);
      }

      return result;
    },

    /**
     * Searches the string for a given name
     */
    getField: function getField(string, name) {
      var start = string.indexOf(name);

      if (start !== -1) {
        var end = string.indexOf(";", start + name.length);

        if (end === -1) {
          return string.substring(start + name.length);
        }

        return string.substring(start + name.length, end);
      }

      return '';
    },
    formatOracleNetDesc: function formatOracleNetDesc(value) {
      var formattedValue = '';
      var indentLevel = 0;
      var lastBracket = null;

      for (var i = 0; i < value.length; i++) {
        var currChar = value.charAt(i);

        if (currChar === '(') {
          if (lastBracket === ')') {
            // )(
            formattedValue += '\n' + this.generateIndent(indentLevel) + currChar;
          } else {
            // ((
            if (lastBracket === null) {
              // for the very first bracket, don't newline or increase indentLevel
              formattedValue += this.generateIndent(indentLevel) + currChar;
            } else {
              indentLevel++;
              formattedValue += '\n' + this.generateIndent(indentLevel) + currChar;
            }
          }

          lastBracket = currChar;
        } else if (currChar === ')') {
          if (lastBracket === ')') {
            // ))
            indentLevel--;
            formattedValue += '\n' + this.generateIndent(indentLevel) + currChar;
          } else {
            // ()
            formattedValue += currChar;
          }

          lastBracket = currChar;
        } else {
          // all other chars
          formattedValue += currChar;
        }
      }

      return formattedValue;
    },
    generateIndent: function generateIndent(indentLevel) {
      var indent = '';
      var j = indentLevel;

      while (j !== 0) {
        indent += '\t';
        j--;
      }

      return indent;
    },
    stripSpecialCharsFromOracleNetDesc: function stripSpecialCharsFromOracleNetDesc(value) {
      return value.replace(new RegExp("[\\t\\r\\n\\b\\f]", "g"), "");
    }
  });
  var _static = {
    getInstance: function getInstance() {
      if (!_singletonInstance) {
        _singletonInstance = new StringUtil();
      }

      return _singletonInstance;
    }
  };
  return _static.getInstance();
});