/*
 * Copyright (c) 2017, Tony Opara
 *        All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 * - Redistributions of source code must retain the above copyright notice, this 
 *   list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice, 
 *   this list of conditions and the following disclaimer in the documentation 
 *   and/or other materials provided with the distribution.
 * 
 * Neither the name of Google nor the names of its contributors may be used to 
 * endorse or promote products derived from this software without specific 
 * prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

function SqlExporterDialog(options) {
    options = options || {
      format: 'sql',
      encoding: 'UTF-8',
      outputBlankRows: false,
      columns: null
    };
    
    this._columnOptionMap = {};
    this._createDialog(options);
  }

  
  SqlExporterDialog.uploadTargets = [];
  
  SqlExporterDialog.prototype._createDialog = function(options) {
    var self = this;
    
    this._dialog = $(DOM.loadHTML("core", "scripts/dialogs/sql-exporter-dialog.html"));
    this._elmts = DOM.bind(this._dialog);
    this._level = DialogSystem.showDialog(this._dialog);
    this._elmts.dialogHeader.html($.i18n._('core-dialogs')["custom-tab-exp"]);
    this._elmts.or_dialog_content.html($.i18n._('core-dialogs')["content"]);
    this._elmts.or_dialog_download.html($.i18n._('core-dialogs')["download"]);

    this._elmts.selectAllButton.html($.i18n._('core-buttons')["select-all"]);
    this._elmts.deselectAllButton.html($.i18n._('core-buttons')["deselect-all"]);

    this._elmts.downloadPreviewButton.html($.i18n._('core-buttons')["preview"]);
    this._elmts.downloadButton.html($.i18n._('core-buttons')["download"]);

    this._elmts.cancelButton.html($.i18n._('core-buttons')["cancel"]);
//    this._elmts.nextButton.html($.i18n._('core-buttons')["next"]);
    
    this._elmts.tableNameLabel.html($.i18n._('core-dialogs')["tableNameLabel"]);
    this._elmts.includeStructureLabel.html($.i18n._('core-dialogs')["for-include-structure-checkbox"]);
    this._elmts.includeDropStatementLabel.html($.i18n._('core-dialogs')["for-include-drop-statement-checkbox"]);
    this._elmts.includeContentLabel.html($.i18n._('core-dialogs')["for-include-content-checkbox"]);
    this._elmts.includeIfExistDropStatementLabel.html($.i18n._('core-dialogs')["for-include-if-exist-drop-stmt-checkbox"]);
    
    this._elmts.nullCellValueToEmptyStringLabel.html($.i18n._('core-dialogs')["for-null-cell-value-to-empty-str-label"]);
  
    this._elmts.sqlExportIgnoreFacetsLabel.html($.i18n._('core-dialogs')["sqlExporterIgnoreFacets"]);
    this._elmts.sqlExportTrimAllColumnsLabel.html($.i18n._('core-dialogs')["sqlExporterTrimColumns"]);
    this._elmts.sqlExportOutputEmptyRowsLabel.html($.i18n._('core-dialogs')["sqlExporterOutputEmptyRows"]);
  
    $("#sql-exporter-tabs-content").css("display", "");
    $("#sql-exporter-tabs-download").css("display", "");
    $("#sql-exporter-tabs").tabs();
   
    for (var i = 0; i < theProject.columnModel.columns.length; i++) {
        var column = theProject.columnModel.columns[i];
        var name = column.name;
        var rowId = "sql-exporter-dialog-row" + i;
        var selectBoxName = 'selectBoxRow' + i;
        var sizeInputName = 'sizeInputRow' + i;
        var applyAllBtnName = 'applyAllBtn' + i;
      
        var allowNullChkBoxName = 'allowNullChkBox' + i;
        var defaultValueTextBoxName = 'defaultValueTextBox' + i;


        var sel = $('<select>').appendTo('body');
        sel.append($("<option>").attr('value','VARCHAR').text('VARCHAR'));
        sel.append($("<option>").attr('value','TEXT').text('TEXT'));
        sel.append($("<option>").attr('value','INT').text('INT'));
        sel.append($("<option>").attr('value','NUMERIC').text('NUMERIC'));
        sel.append($("<option>").attr('value','CHAR').text('CHAR'));
        sel.append($("<option>").attr('value','DATE').text('DATE'));
        sel.append($("<option>").attr('value','TIMESTAMP').text('TIMESTAMP'));
    
        sel.attr('id', selectBoxName);
        sel.attr('rowIndex', i);
        sel.addClass('typeSelectClass');
        sel.css({'width':'95%'});
       
        $(sel).on('change', function() {
              var rowIndex = this.getAttribute('rowIndex');
              if (this.value === 'VARCHAR' || this.value === 'CHAR' || this.value === 'NUMERIC' || this.value === 'INT') {
                  $('#sizeInputRow'+ rowIndex).prop("disabled", false);
              }else{
                  $('#sizeInputRow'+ rowIndex).val("");
                  $('#sizeInputRow'+ rowIndex).prop("disabled", true);
              }
        });
         //create and add Row
         var row = $('<tr>')
              .addClass("sql-exporter-dialog-row")
              .attr('id', rowId)
              .attr("column", name)
              .attr("rowIndex", i)
              .appendTo(this._elmts.columnListTable);
          
         //create and add column
          var columnCell =  $('<td>')
          .attr('width', '150px')
          .appendTo(row);
          $('<input>')
            .attr('type', 'checkbox')
            .attr('checked', 'checked')
            .addClass("columnNameCheckboxStyle")
            .appendTo(columnCell);
            $('<span>')
                .text(name)
                .appendTo(columnCell);
          
          var typeCell =  $('<td>')
          .attr('width', '150px')
          .appendTo(row);
           sel.appendTo(typeCell);
    
          var sizeCell =  $('<td>')
           .attr('width', '20px')
           .appendTo(row);
            $('<input>')
               .attr('type', 'text')
               .attr('size', '8px')
               .attr('id', sizeInputName)
               .addClass("sql-exporter-dialog-input")
               .appendTo(sizeCell);
            
            var applyAllCell =  $('<td>')
            .attr('width', '60px')
            .appendTo(row);
              $('<input>')
              .attr('type', 'button')
              .attr('value', 'Apply All')
              .attr('id', applyAllBtnName)
              .attr("rowIndex", i)
              .appendTo(applyAllCell);
            
          var nullableCell =  $('<td>')
            .attr('width', '90px')
            .addClass("allowNullCellStyle")
            .appendTo(row);
            $('<input>')
              .attr('type', 'checkbox')
              .attr('checked', 'checked')
              .attr('id', allowNullChkBoxName)
              .attr("rowIndex", i)
              .addClass("allowNullCheckboxStyle")
              .appendTo(nullableCell);
         
          var defValueCell =  $('<td>')
            .attr('width', '30px')
            .appendTo(row);
             $('<input>')
                .attr('type', 'text')
                .attr('size', '8px')
                .attr('id', defaultValueTextBoxName)
                .attr("rowIndex", i)
                .addClass("defaultValueTextBoxStyle")
                .appendTo(defValueCell);
            
    
     
            $('#' + applyAllBtnName).on('click', function() {
                var rowIndex = this.getAttribute('rowIndex');
                var typeValue = $("#selectBoxRow" + rowIndex).val();
                var sizeValue = $("#sizeInputRow" + rowIndex).val();
                
                $('select.typeSelectClass').each(function() {
                    //alert("Value:" + this.value + " RowIndex:" + rowIndex + " TypeValue:" + typeValue + "" + this.value);
                    var rowId = this.getAttribute('rowIndex');
                    var id = this.getAttribute('id');
                    if(rowIndex !== rowId){
                        $("#" + id).val(typeValue);
                    }
       
                });
                $('input.sql-exporter-dialog-input').each(function() {
                    var rowId = this.getAttribute('rowIndex');
                    var id = this.getAttribute('id');
                    if(rowIndex !== rowId){
                        $("#" + id).val(sizeValue);
                    }
              
                });
         
            });
            
            $('#' + allowNullChkBoxName).on('click', function() {
                var rowIndex = this.getAttribute('rowIndex');
                var id = this.getAttribute('id');
                var checked =  $(this).is(':checked');;
                
                if(checked == false){
                    $('#defaultValueTextBox'+ rowIndex).prop("disabled", false);
                }else{
                    $('#defaultValueTextBox'+ rowIndex).val("");
                    $('#defaultValueTextBox'+ rowIndex).prop("disabled", true);
                }
            });
           
          this._columnOptionMap[name] = {
            name: name,
            type: '',
            size: ''
    
          };
    }
   
    this._elmts.allowNullToggleCheckbox.click(function() {
        var checked =  $(this).is(':checked');
        if(checked == true){
            $("input:checkbox[class=allowNullCheckboxStyle]").each(function () {
                $(this).attr('checked', true);
            });
            $("input:text[class=defaultValueTextBoxStyle]").each(function () {
                $(this).attr('disabled', true);
            });
            
        }else{
            $("input:checkbox[class=allowNullCheckboxStyle]").each(function () {
                $(this).attr('checked', false);
            });
            $("input:text[class=defaultValueTextBoxStyle]").each(function () {
                $(this).attr('disabled', false);
            });
        }
        
    });
    
    this._elmts.selectAllButton.click(function() {
       $("input:checkbox[class=columnNameCheckboxStyle]").each(function () {
           $(this).attr('checked', true);
        });
      self._updateOptionCode();
    });
    this._elmts.deselectAllButton.click(function() {
        $("input:checkbox[class=columnNameCheckboxStyle]").each(function () {
           $(this).attr('checked', false);
        });
       self._updateOptionCode();
    });

    this._elmts.includeStructureCheckbox.click(function() {
        var checked =  $(this).is(':checked');
        //alert('checked ' + checked);
        if(checked == true){
            $('#includeDropStatementCheckboxId').removeAttr("disabled");
            $('#includeIfExistDropStatementCheckboxId').removeAttr("disabled");
        }else{
            $('#includeDropStatementCheckboxId').attr("disabled", true);
            $('#includeIfExistDropStatementCheckboxId').attr("disabled", true);
        }
    });
    
    this._elmts.includeContentCheckbox.click(function() {
        var checked =  $(this).is(':checked');
        if(checked == true){
            $('#nullCellValueToEmptyStringCheckboxId').removeAttr("disabled");
        }else{
            $('#nullCellValueToEmptyStringCheckboxId').attr("disabled", true);
          
        }
    });
    

    this._elmts.cancelButton.click(function() { self._dismiss(); });
    this._elmts.downloadButton.click(function() { self._download(); });
    this._elmts.downloadPreviewButton.click(function(evt) { self._previewDownload(); });
    
    this._configureUIFromOptionCode(options);
    this._updateOptionCode();
  };

  SqlExporterDialog.prototype._configureUIFromOptionCode = function(options) {
      
      this._elmts.tableNameTextBox.val(theProject.metadata.name);
      this._elmts.sqlExportOutputEmptyRowsCheckbox.attr('checked', 'checked');
      this._elmts.sqlExportTrimAllColumnsCheckbox.attr('checked', 'checked');
      this._elmts.nullCellValueToEmptyStringLabel.attr('checked', 'checked');
      
      $("input:text[class=defaultValueTextBoxStyle]").each(function () {
          $(this).prop("disabled", true);
       });
 
 
  };
  
  SqlExporterDialog.prototype._dismiss = function() {
      DialogSystem.dismissUntil(this._level - 1);
  };
  
  SqlExporterDialog.prototype._previewDownload = function() {
    this._postExport(true);
  };
  
  SqlExporterDialog.prototype._download = function() {
    var result = this._postExport(false);
   // alert("result::" + result);
    if(result == true){
        this._dismiss(); 
    }
    
  };
  
  SqlExporterDialog.prototype._postExport = function(preview) {
    var self = this;
    var exportAllRowsCheckbox = this._elmts.sqlExportAllRowsCheckbox[0].checked;
    var options = this._getOptionCode();
    
    if(options.columns == null || options.columns.length == 0){
        alert("Please select at least one column...");
        return false;
    }
    
    var name = $.trim(theProject.metadata.name.replace(/\W/g, ' ')).replace(/\s+/g, '-');
    var sqlExportInput = {};
    sqlExportInput.name = name;
    sqlExportInput.options = JSON.stringify(options);
    sqlExportInput.project =  theProject.id;
    
    //validate form @ backend
    $.post(
        "command/core/preview-sql-export",
        sqlExportInput,
        function(sqlValidationResult) {
            if(sqlValidationResult && sqlValidationResult.code === 'OK'){
                //generate code
                
                var format = options.format;
                var encoding = options.encoding;
                
                delete options.format;
                delete options.encoding;
                if (preview) {
                  options.limit = 10;
                }
                
              // var ext = SqlExporterDialog.formats[format].extension;
                var form = self._prepareSqlExportRowsForm(format, !exportAllRowsCheckbox, "sql");
                $('<input />')
                .attr("name", "options")
                .attr("value", JSON.stringify(options))
                .appendTo(form);
                if (encoding) {
                  $('<input />')
                  .attr("name", "encoding")
                  .attr("value", encoding)
                  .appendTo(form);
                }
                if (!preview) {
                  $('<input />')
                  .attr("name", "contentType")
                  .attr("value", "application/x-unknown") // force download
                  .appendTo(form);
                }
                
               // alert("form::" + form);
                document.body.appendChild(form);
              
                window.open("about:blank", "refine-export");
                form.submit();
              
                document.body.removeChild(form);
                return true;
      
            }else{
                window.alert("Problem with sql code genration");
                return false;
            }
                
        },
        "json"
      ).fail(function( jqXhr, textStatus, errorThrown ){
          alert( textStatus + ':' + errorThrown );
          return false;
      });
    
     return true;
  
  };
  
  SqlExporterDialog.prototype._prepareSqlExportRowsForm = function(format, includeEngine, ext) {
      var name = $.trim(theProject.metadata.name.replace(/\W/g, ' ')).replace(/\s+/g, '-');
      var form = document.createElement("form");
      $(form)
      .css("display", "none")
      .attr("method", "post")
      .attr("action", "command/core/export-rows/" + name + ((ext) ? ("." + ext) : ""))
      .attr("target", "refine-export");

      $('<input />')
      .attr("name", "project")
      .attr("value", theProject.id)
      .appendTo(form);
      $('<input />')
      .attr("name", "format")
      .attr("value", format)
      .appendTo(form);
      if (includeEngine) {
        $('<input />')
        .attr("name", "engine")
        .attr("value", JSON.stringify(ui.browsingEngine.getJSON()))
        .appendTo(form);
      }
     
      return form;
   };  
  
  SqlExporterDialog.prototype._selectColumn = function(columnName) {
  
    this._elmts.columnNameSpan.text(columnName);  
    var columnOptions = this._columnOptionMap[columnName];
    alert("in _selectColumn:column type::" + columnOptions.type);

  };
  
  SqlExporterDialog.prototype._updateCurrentColumnOptions = function() {
//    var selectedColumnName = this._elmts.columnList.find('.sql-exporter-dialog-column.selected').attr('column');
//    //alert("_updateCurrentColumnOptions::" + selectedColumnName);   
//    var columnOptions = this._columnOptionMap[selectedColumnName];
//    columnOptions.type= this._elmts.columnOptionPane.find('input[name="sql-exporter-type"]:checked').val();

  };
  
  SqlExporterDialog.prototype._updateOptionCode = function() {
   this._elmts.optionCodeInput.val(JSON.stringify(this._getOptionCode(), null, 2));
  };

  
  SqlExporterDialog.prototype._getOptionCode = function() {
    var options = {
      //format: this._dialog.find('input[name="sql-exporter-download-format"]:checked').val()
    };
    var unescapeJavascriptString = function(s) {
      try {
        return JSON.parse('"' + s + '"');
      } catch (e) {
        // We're not handling the case where the user doesn't escape double quotation marks.
        return s;
      }
    };
  
    options.format = 'sql';
    options.separator = ';';
    options.encoding = 'UTF-8';
  
    options.outputBlankRows = this._elmts.sqlExportOutputEmptyRowsCheckbox[0].checked;
    options.includeStructure = this._elmts.includeStructureCheckbox[0].checked;
    options.includeDropStatement = this._elmts.includeDropStatementCheckbox[0].checked;
    options.includeContent = this._elmts.includeContentCheckbox[0].checked;
    options.tableName = $.trim(this._elmts.tableNameTextBox.val().replace(/\W/g, ' ')).replace(/\s+/g, '_');
    options.trimColumnNames = this._elmts.sqlExportTrimAllColumnsCheckbox[0].checked;
    
    options.convertNulltoEmptyString = this._elmts.nullCellValueToEmptyStringCheckbox[0].checked;
    options.includeIfExistWithDropStatement = this._elmts.includeIfExistDropStatementCheckbox[0].checked;
     
        
    options.columns = [];
   
    var self = this;
    this._elmts.columnListTable.find('.sql-exporter-dialog-row').each(function() {
      if ($(this).find('input[type="checkbox"]')[0].checked) {
        var name = this.getAttribute('column');
        var rowIndex = this.getAttribute('rowIndex');
        
        var selectedValue = $('#selectBoxRow' + rowIndex).val();
     
        var typeSize = 0;
        if(selectedValue === 'VARCHAR' || selectedValue === 'CHAR' || selectedValue === 'INT' || selectedValue === 'NUMERIC'){    
            typeSize = $('#sizeInputRow' + rowIndex).val();
           // alert("typeSize::" + typeSize);
        }
        
        var allowNullChkBoxName = $('#allowNullChkBox' + rowIndex).is(':checked');
        var defaultValueTextBoxName = $('#defaultValueTextBox' + rowIndex).val();
       // alert("allowNullChkBoxName::" + allowNullChkBoxName);
       // alert("defaultValueTextBoxName::" + defaultValueTextBoxName);
        
        var fullColumnOptions = self._columnOptionMap[name];
        var columnOptions = {
          name: name,
          type: selectedValue,
          size: typeSize,
          allowNull: allowNullChkBoxName,
          defaultValue: defaultValueTextBoxName,
          nullValueToEmptyStr: options.convertNulltoEmptyString
       
        };

      //  alert('checked type ' + columnIndex + ' =' + check_value);
        
        options.columns.push(columnOptions);
      }
    });
    //alert('options:' + options);
    return options;
  };