/*
 * Copyright 1999-2011 Alibaba Group Holding Ltd.
 *
 * 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
 *
 *      http://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.
 */
package com.alibaba.druid.bvt.sql.mysql.parser;

import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.List;

import junit.framework.Assert;
import junit.framework.TestCase;

import com.alibaba.druid.sql.ast.SQLStatement;
import com.alibaba.druid.sql.dialect.mysql.parser.MySqlStatementParser;
import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlOutputVisitor;
import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlParameterizedOutputVisitor;
import com.alibaba.druid.util.IOUtils;
import com.alibaba.druid.util.JdbcUtils;

public class MySqlParserResourceTest extends TestCase {

    public void test_0() throws Exception {
//        exec_test("bvt/parser/mysql-0.txt");
        exec_test("bvt/parser/mysql-1.txt");
        exec_test("bvt/parser/mysql-2.txt");
        exec_test("bvt/parser/mysql-3.txt");
        exec_test("bvt/parser/mysql-4.txt");
        exec_test("bvt/parser/mysql-5.txt");
        exec_test("bvt/parser/mysql-6.txt");
        exec_test("bvt/parser/mysql-7.txt");
        exec_test("bvt/parser/mysql-8.txt");
        exec_test("bvt/parser/mysql-9.txt");
        exec_test("bvt/parser/mysql-10.txt");
        exec_test("bvt/parser/mysql-11.txt");
        exec_test("bvt/parser/mysql-12.txt");
        exec_test("bvt/parser/mysql-13.txt");
    }

    public void exec_test(String resource) throws Exception {
        System.out.println(resource);
        InputStream is = null;

        is = Thread.currentThread().getContextClassLoader().getResourceAsStream(resource);
        Reader reader = new InputStreamReader(is, "UTF-8");
        String input = IOUtils.read(reader);
        JdbcUtils.close(reader);
        String[] items = input.split("---------------------------");
        String sql = items[0].trim();
        String expect = items[1].trim();

        MySqlStatementParser parser = new MySqlStatementParser(sql);
        List<SQLStatement> statementList = parser.parseStatementList();

        Assert.assertEquals(1, statementList.size());

        String text = output(statementList);
        System.out.println(text);
        System.out.println();
        
        expect = expect.replaceAll("\\r\\n", "\n");
        Assert.assertEquals(expect, text.trim());

        String mergeExpect = null;
        if (items.length == 3) {
            mergeExpect = items[2].trim();
        }
        if (mergeExpect != null) {
            mergValidate(sql, mergeExpect);
        }
    }

    void mergValidate(String sql, String expect) {

        MySqlStatementParser parser = new MySqlStatementParser(sql);
        List<SQLStatement> statementList = parser.parseStatementList();
        SQLStatement statemen = statementList.get(0);

        Assert.assertEquals(1, statementList.size());

        StringBuilder out = new StringBuilder();
        MySqlParameterizedOutputVisitor visitor = new MySqlParameterizedOutputVisitor(out);
        statemen.accept(visitor);

        System.out.println(out.toString());

        expect = expect.replaceAll("\\r\\n", "\n");
        Assert.assertEquals(expect, out.toString());
    }

    private String output(List<SQLStatement> stmtList) {
        StringBuilder out = new StringBuilder();
        MySqlOutputVisitor visitor = new MySqlOutputVisitor(out);

        for (SQLStatement stmt : stmtList) {
            stmt.accept(visitor);
        }

        return out.toString();
    }
}
