'''
@Description: 简单数据操作类
@Author: guohb65
@Email: guohb65@chinaunicom.cn
@Date: 2019-01-24 18:39:08
@LastEditTime: 2019-07-10 17:16:54
@LastEditors: Please set LastEditors
'''

import json

from .my_datahandle.const import ConstGen
from .my_datahandle.datahandle_utility import DatahandleUtility


class SimpleSqlOpt(object):

    def __init__(self):
        pass

    def simple_add(self, table_name, request=None, data_params=None, uid=None):
        """
        单条数据新增
        :param request:
        :return:
        """
        datahandle_utility = DatahandleUtility()
        if data_params is None:
            data_params = json.loads(datahandle_utility.request_param2dict(
                request).get(ConstGen.DATA_STR))
        unique_data = data_params[ConstGen.UNIQUE_STR]
        others_data = data_params[ConstGen.OTHERS_STR]
        if datahandle_utility.data_is_exist(unique_data, table_name):
            ret = {ConstGen.RETCODE: "2", ConstGen.RETVAL: "名称重复"}
            print(ret)
            return json.dumps(ret, ensure_ascii=False)
        else:
            insert_data = dict(unique_data, **others_data)
            insert_sql = datahandle_utility.gen_insert_sql(
                dict_data=insert_data, table_name=table_name, uid=uid)
            trans_data = datahandle_utility.package_sql(
                ConstGen.TRANSSQL_STR, insert_sql)
            return datahandle_utility.request_trans_service(
                ConstGen.TRANSSQL_URL, trans_data)

    def batch_add(self, table_name, request=None, data_params=None):
        """
        批量新增
        :param request:
        :return:
        """
        datahandle_utility = DatahandleUtility()
        if data_params is None:
            data_params = json.loads(datahandle_utility.request_param2dict(
                request).get(ConstGen.DATA_STR))
        trans_sql_list = []
        for json_obj in data_params:
            if ConstGen.UNIQUE_STR in json_obj:
                unique_data = data_params[ConstGen.UNIQUE_STR]
            if ConstGen.OTHERS_STR in json_obj:
                others_data = data_params[ConstGen.OTHERS_STR]
            if datahandle_utility.data_is_exist(unique_data, table_name):
                ret = {ConstGen.RETCODE: "2", ConstGen.RETVAL: "名称重复"}
                print(ret)
                return json.dumps(ret, ensure_ascii=False)
            else:
                insert_data = dict(unique_data, **others_data)
                insert_sql = datahandle_utility.gen_insert_sql(
                    insert_data, table_name)
                trans_sql = datahandle_utility.trans_sql(insert_sql)
                trans_sql_list.append(trans_sql)

        trans_data = datahandle_utility.package_trans_list(trans_sql_list)
        return datahandle_utility.request_trans_service(
            ConstGen.TRANSSQL_URL, trans_data)

    def simple_alter(self, table_name, request=None, data_params=None):
        """
        修改/删除
        :param request:
        :return:
        """
        datahandle_utility = DatahandleUtility()
        if data_params is None:
            data_params = datahandle_utility.request_param2dict(request)
        if ConstGen.OPT_UPDATE in data_params.keys():
            update_all_data = json.loads(data_params.get(ConstGen.OPT_UPDATE))
            update_condition = update_all_data[ConstGen.CONDITION_STR]
            update_data = update_all_data[ConstGen.DATA_STR]

            unique_data = update_data[ConstGen.UNIQUE_STR]
            if datahandle_utility.data_is_exist(unique_data, table_name, update_condition):
                ret = {ConstGen.RETCODE: "2", ConstGen.RETVAL: "名称重复"}
                print(ret)
                return json.dumps(ret, ensure_ascii=False)
            else:
                update_sql = datahandle_utility.gen_update_sql(
                    update_data, update_condition, table_name)
                trans_data = datahandle_utility.package_sql(
                    ConstGen.TRANSSQL_STR, update_sql)
                if trans_data is None:
                    ret = {ConstGen.RETCODE: "2", ConstGen.RETVAL: "更新参数传输异常"}
                    return json.dumps(ret, ensure_ascii=False)
                else:
                    return datahandle_utility.request_trans_service(
                        ConstGen.TRANSSQL_URL, trans_data)
        if ConstGen.OPT_DELETE in data_params.keys():
            delete_condition = json.loads(data_params.get(ConstGen.OPT_DELETE))
            delete_sql = datahandle_utility.gen_delete_sql(
                delete_condition, table_name)
            trans_data = datahandle_utility.package_sql(
                ConstGen.TRANSSQL_STR, delete_sql)
            if trans_data is None:
                ret = {ConstGen.RETCODE: "2", ConstGen.RETVAL: "删除数据参数传输异常"}
                return json.dumps(ret, ensure_ascii=False)
            else:
                return datahandle_utility.request_trans_service(
                    ConstGen.TRANSSQL_URL, trans_data)

    def simple_query(self, table_name, request=None, data_params=None):
        """
        信息查询
        :param request:
        :return:
        """
        datahandle_utility = DatahandleUtility()
        if data_params is None:
            data_params = datahandle_utility.request_param2dict(request)
        print(data_params)
        print(ConstGen.STANDERSQL_URL)
        trans_data = datahandle_utility.gen_select_all_sql(
            data_params, table_name)
        print(trans_data)
        if trans_data is None:
            ret = {ConstGen.RETCODE: "2", ConstGen.RETVAL: "查询条件不存在"}
            return json.dumps(ret, ensure_ascii=False)
        else:
            ret_data = datahandle_utility.request_trans_service(
                ConstGen.STANDERSQL_URL, trans_data)
            if ConstGen.CONDITION_STR in data_params.keys():
                condition = json.loads(
                    data_params.get(ConstGen.CONDITION_STR))
            page_num = None
            page_size = None
            if ConstGen.PAGE_STR in condition:
                page_info = condition.get(ConstGen.PAGE_STR)
                if ConstGen.PAGE_NUM_STR in page_info:
                    page_num = page_info[ConstGen.PAGE_NUM_STR]
                if ConstGen.PAGE_SIZE_STR in page_info:
                    page_size = page_info[ConstGen.PAGE_SIZE_STR]
            if page_num is not None and page_size is not None:
                ret_data = json.loads(ret_data)
                start_index = (int(page_num) - 1) * int(page_size)
                if int(ret_data[ConstGen.ROWCOUNT_STR]) < start_index:
                    ret_data.pop(ConstGen.DATAROWS_STR)
                    ret_data[ConstGen.PAGECOUNT_STR] = "0"
                else:
                    if ConstGen.DATAROWS_STR in ret_data:
                        all_datarows = ret_data[ConstGen.DATAROWS_STR]
                        print(all_datarows)
                        datarows = all_datarows[start_index: start_index +
                                                             int(page_size)]
                        ret_data[ConstGen.DATAROWS_STR] = datarows
                        ret_data[ConstGen.PAGECOUNT_STR] = len(datarows)
                    else:
                        ret_data[ConstGen.PAGECOUNT_STR] = '0'
                return json.dumps(ret_data)
            return ret_data