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/**
 *  Copyright (c) 1997-2013, www.tinygroup.org ([email protected]).
 *
 *  Licensed under the GPL, Version 3.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.gnu.org/licenses/gpl.html
 *
 *  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.
 */
package org.tinygroup.jsqlparser.util.deparser;

import org.tinygroup.jsqlparser.statement.StatementVisitor;
import org.tinygroup.jsqlparser.statement.Statements;
import org.tinygroup.jsqlparser.statement.alter.Alter;
import org.tinygroup.jsqlparser.statement.create.index.CreateIndex;
import org.tinygroup.jsqlparser.statement.create.table.CreateTable;
import org.tinygroup.jsqlparser.statement.create.view.CreateView;
import org.tinygroup.jsqlparser.statement.delete.Delete;
import org.tinygroup.jsqlparser.statement.drop.Drop;
import org.tinygroup.jsqlparser.statement.execute.Execute;
import org.tinygroup.jsqlparser.statement.insert.Insert;
import org.tinygroup.jsqlparser.statement.replace.Replace;
import org.tinygroup.jsqlparser.statement.select.Select;
import org.tinygroup.jsqlparser.statement.select.WithItem;
import org.tinygroup.jsqlparser.statement.truncate.Truncate;
import org.tinygroup.jsqlparser.statement.update.Update;

import java.util.Iterator;

public class StatementDeParser implements StatementVisitor {

    protected StringBuilder buffer;
    

    public StatementDeParser() {
		super();
	}


	public StatementDeParser(StringBuilder buffer) {
        this.buffer = buffer;
    }

    
    public void visit(CreateIndex createIndex) {
        CreateIndexDeParser createIndexDeParser = new CreateIndexDeParser(buffer);
        createIndexDeParser.deParse(createIndex);
    }

    
    public void visit(CreateTable createTable) {
        CreateTableDeParser createTableDeParser = new CreateTableDeParser(buffer);
        createTableDeParser.deParse(createTable);
    }

    
    public void visit(CreateView createView) {
        CreateViewDeParser createViewDeParser = new CreateViewDeParser(buffer);
        createViewDeParser.deParse(createView);
    }

    
    public void visit(Delete delete) {
        SelectDeParser selectDeParser = new SelectDeParser();
        selectDeParser.setBuffer(buffer);
        ExpressionDeParser expressionDeParser = new ExpressionDeParser(selectDeParser, buffer);
        selectDeParser.setExpressionVisitor(expressionDeParser);
        DeleteDeParser deleteDeParser = new DeleteDeParser(expressionDeParser, buffer);
        deleteDeParser.deParse(delete);
    }

    
    public void visit(Drop drop) {
        // TODO Auto-generated method stub
    }

    
    public void visit(Insert insert) {
        SelectDeParser selectDeParser = new SelectDeParser();
        selectDeParser.setBuffer(buffer);
        ExpressionDeParser expressionDeParser = new ExpressionDeParser(selectDeParser, buffer);
        selectDeParser.setExpressionVisitor(expressionDeParser);
        InsertDeParser insertDeParser = new InsertDeParser(expressionDeParser, selectDeParser, buffer);
        insertDeParser.deParse(insert);

    }

    
    public void visit(Replace replace) {
        SelectDeParser selectDeParser = new SelectDeParser();
        selectDeParser.setBuffer(buffer);
        ExpressionDeParser expressionDeParser = new ExpressionDeParser(selectDeParser, buffer);
        selectDeParser.setExpressionVisitor(expressionDeParser);
        ReplaceDeParser replaceDeParser = new ReplaceDeParser(expressionDeParser, selectDeParser, buffer);
        replaceDeParser.deParse(replace);
    }

    
    public void visit(Select select) {
        SelectDeParser selectDeParser = new SelectDeParser();
        selectDeParser.setBuffer(buffer);
        ExpressionDeParser expressionDeParser = new ExpressionDeParser(selectDeParser, buffer);
        selectDeParser.setExpressionVisitor(expressionDeParser);
        if (select.getWithItemsList() != null && !select.getWithItemsList().isEmpty()) {
            buffer.append("WITH ");
            for (Iterator iter = select.getWithItemsList().iterator(); iter.hasNext();) {
                WithItem withItem = iter.next();
                withItem.accept(selectDeParser);
                if (iter.hasNext()) {
                    buffer.append(",");
                }
                buffer.append(" ");
            }
        }
        select.getSelectBody().accept(selectDeParser);
    }

    
    public void visit(Truncate truncate) {
    }

    
    public void visit(Update update) {
        SelectDeParser selectDeParser = new SelectDeParser();
        selectDeParser.setBuffer(buffer);
        ExpressionDeParser expressionDeParser = new ExpressionDeParser(selectDeParser, buffer);
        UpdateDeParser updateDeParser = new UpdateDeParser(expressionDeParser, selectDeParser, buffer);
        selectDeParser.setExpressionVisitor(expressionDeParser);
        updateDeParser.deParse(update);

    }

    public StringBuilder getBuffer() {
        return buffer;
    }

    public void setBuffer(StringBuilder buffer) {
        this.buffer = buffer;
    }

    
    public void visit(Alter alter) {

    }

    
    public void visit(Statements stmts) {
        stmts.accept(this);
    }

    
    public void visit(Execute execute) {
        SelectDeParser selectDeParser = new SelectDeParser();
        selectDeParser.setBuffer(buffer);
        ExpressionDeParser expressionDeParser = new ExpressionDeParser(selectDeParser, buffer);
        ExecuteDeParser executeDeParser = new ExecuteDeParser(expressionDeParser, buffer);
        selectDeParser.setExpressionVisitor(expressionDeParser);
        executeDeParser.deParse(execute);
    }
}