/**
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements.  See the NOTICE file
distributed with this work for additional information
regarding copyright ownership.  The ASF licenses this file
to you 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 main

import (
	"database/sql"
	"fmt"
	_ "github.com/go-sql-driver/mysql"
)

func main() {
	host := "127.0.0.1"
	port := 9030
	user := "root"
	password := ""
	dsn := fmt.Sprintf("%s:%s@tcp(%s:%d)/", user, password, host, port)

	//connect to doris
	driver, err := sql.Open("mysql", dsn)
	if err != nil {
		fmt.Printf("open mysql driver failed, error[%v]\n", err)
		return
	}
	if err := driver.Ping(); err != nil {
		fmt.Printf("ping doris failed, error[%v]\n", err)
		return
	}
	fmt.Printf("connect to doris successfully\n")

	//create database
	if _, err := driver.Exec("CREATE DATABASE IF NOT EXISTS  db_test"); err != nil {
		fmt.Printf("create database failed, error[%v]\n", err)
		return
	}
	fmt.Printf("create database successfully\n")

	//set db context
	if _, err := driver.Exec("USE db_test"); err != nil {
		fmt.Printf("set db context failed, error[%v]\n", err)
		return
	}
	fmt.Printf("set db context successfully\n")

	//create table
	SQL := "CREATE TABLE IF NOT EXISTS table_test(siteid INT, citycode SMALLINT, pv BIGINT SUM) " +
		"AGGREGATE KEY(siteid, citycode) " +
		"DISTRIBUTED BY HASH(siteid) BUCKETS 10 " +
		"PROPERTIES(\"replication_num\" = \"1\")"
	if _, err := driver.Exec(SQL); err != nil {
		fmt.Printf("create table failed, error[%v]\n", err)
		return
	}
	fmt.Printf("create table successfully\n")

	//insert data
	SQL = "INSERT INTO table_test values(1, 2, 3), (4, 5, 6), (1, 2, 4)"
	if _, err := driver.Exec(SQL); err != nil {
		fmt.Printf("insert data failed, error[%v]\n", err)
		return
	}
	fmt.Printf("insert data successfully\n")

	//query data
	rows, err := driver.Query("SELECT * FROM table_test")
	if err != nil {
		fmt.Printf("query data from doris failed, error[%v]\n", err)
		return
	}
	for rows.Next() {
		var siteId, cityCode int
		var pv int64
		if err := rows.Scan(&siteId, &cityCode, &pv); err != nil {
			fmt.Printf("scan columns failed, error[%v]\n", err)
			return
		}
		fmt.Printf("%d\t%d\t%d\n", siteId, cityCode, pv)
	}
	fmt.Printf("query data successfully\n")

	//drop database
	if _, err := driver.Exec("DROP DATABASE IF EXISTS db_test"); err != nil {
		fmt.Printf("drop database failed, error[%v]\n", err)
		return
	}
	fmt.Printf("drop database successfully\n")
}