import taos
import sys
import time
import socket
import os
import threading

from util.log import *
from util.sql import *
from util.cases import *
from util.dnodes import *

class TDTestCase:
    def init(self, conn, logSql):
        tdLog.debug("start to execute %s" % __file__)
        tdSql.init(conn.cursor(),logSql)
        self.buffer_boundary = [3,4097,8193,12289,16384]
        self.buffer_error = [self.buffer_boundary[0]-1,self.buffer_boundary[-1]+1,12289,96]
        # pages_boundary >= 64
        self.pages_boundary = [64,128,512]
        self.pages_error = [256,self.pages_boundary[0]-1]
    def alter_buffer(self):
        tdSql.execute('create database db')
        for buffer in self.buffer_boundary:
            tdSql.execute(f'alter database db buffer {buffer}')
            tdSql.query('select * from information_schema.ins_databases where name = "db"')
            tdSql.checkEqual(tdSql.queryResult[0][8],buffer)    
        tdSql.execute('drop database db')
        tdSql.execute('create database db vgroups 10')
        for buffer in self.buffer_error:
            tdSql.error(f'alter database db buffer {buffer}')
        tdSql.execute('drop database db')
    
    def alter_pages(self):
        tdSql.execute('create database db')
        for pages in self.pages_boundary:
            tdSql.execute(f'alter database db pages {pages}')
            tdSql.query('select * from information_schema.ins_databases where name = "db"')
            tdSql.checkEqual(tdSql.queryResult[0][10],pages)
        tdSql.execute('drop database db')
        tdSql.execute('create database db')
        for pages in self.pages_error:
            tdSql.error(f'alter database db pages {pages}')
        tdSql.execute('drop database db')

    def run(self):
        tdSql.error('create database db1 vgroups 10 buffer 12289')
        self.alter_buffer()
        self.alter_pages()

    def stop(self):
        tdSql.close()
        tdLog.success(f"{__file__} successfully executed")

tdCases.addLinux(__file__, TDTestCase())
tdCases.addWindows(__file__, TDTestCase())