import os
import pymysql
from dingxin_toolbox_drf.settings import BASE_DIR
from update.utils.git_util import GitUtil


class DbCompare:
    def __init__(self, target_ip, short_release):
        self.target_server = target_ip
        self.target_user = 'test'
        self.target_pwd = 'cine123456'
        self.target_port = '3306'
        self.target_release = short_release
        self.cine_sql_path = os.path.join(BASE_DIR, 'dx', 'sql', self.target_release + '.sql')
        self.diff_sql_path = os.path.join(BASE_DIR, 'dx', 'temp', 'diff_' + self.target_server + '.sql')
        self.create_sql_path = os.path.join(BASE_DIR, 'dx', 'temp', 'create_' + self.target_server + '.sql')

    # 生成对比文件
    def gen_diff_file(self):
        # serv_host = '127.0.0.1'
        # serv_user = 'dingxin'
        # serv_pwd = 'cine123456'
        # serv_port = '3306'

        serv_host = '172.16.3.112'
        serv_user = 'test'
        serv_pwd = 'cine123456'
        serv_port = '3306'

        server_1 = f'--server1={serv_user}:{serv_pwd}@{serv_host}:{serv_port}'
        server_2 = f'--server2={self.target_user}:{self.target_pwd}@{self.target_server}:{self.target_port}'

        git_util = GitUtil(self.target_release)
        db_name = git_util.get_db_name()

        cmd = f'mysqldiff {server_1} {server_2} --changes-for=server2 --difftype=sql --force --quiet --skip-table-options {db_name}:cine > {self.diff_sql_path}'
        print(cmd)

        result = os.system(cmd)
        print(result)
        return self.diff_sql_path

    # 生成差异sql
    # def gen_diff_sql(self):
    #     diff_sql_list = []
    #     diff_file = open(self.diff_sql_path, 'w', encoding='utf-8')
    #     with open(self.diff_sql_tmp_path, 'r', encoding='utf-8') as tmp_f:
    #         for line in tmp_f.readlines():
    #             if line.startswith('#'):
    #                 continue
    #             if line == '':
    #                 continue
    #             diff_file.write(line)
    #     tmp_f.close()
    #     diff_file.close()
    #     with open(self.diff_sql_path, 'r', encoding='utf-8') as diff_f:
    #         content = diff_f.read()
    #         temp = content.split(';')
    #         for sql in temp:
    #             diff_sql_list.append(sql + ';')
    #     diff_f.close()
    #     print(diff_sql_list)
    #     return diff_sql_list

    # 生成新表sql
    def gen_create_file(self):
        create_sql_list = []
        with open(self.diff_sql_path, 'r', encoding='utf-8') as f:
            for line in f.readlines():
                if line.startswith('#        TABLE'):
                    create_sql_list.append(line.split(':')[1].strip())
        print(create_sql_list)
        f.close()
        create_table_sql_list = ['USE `cine`;\n\n']
        with open(self.cine_sql_path, 'r', encoding='utf-8') as f:
            content = f.read()
            for sql in content.split(';\n'):
                for table in create_sql_list:
                    if sql.find(f'CREATE TABLE `{table}`'):
                        create_table_sql_list.append(sql + ';\n\n')
        f.close()
        with open(self.create_sql_path, 'w', encoding='utf-8') as f:
            f.writelines(create_table_sql_list)
        f.close()
        return self.create_sql_path

    # 执行差异
    def exec_diff_sql(self):
        self.gen_diff_file()
        self.gen_create_file()
        diff_cmd = f'mysql -h{self.target_server} -P{self.target_port} -u{self.target_user} -p{self.target_pwd} < {self.diff_sql_path}'
        create_cmd = f'mysql -h{self.target_server} -P{self.target_port} -u{self.target_user} -p{self.target_pwd} < {self.create_sql_path}'
        diff_result = os.system(diff_cmd)
        print(diff_result)
        create_result = os.system(create_cmd)
        print(create_result)