import sys
import re
from dw_base.spark.spark_sql import SparkSQL
from dw_base.utils.config_utils import parse_args


# md5值相同的情况下去判断
# 1、核心字段缺失，认定不重复，生成新的 MD5值
# 2、核心字段不缺失，满足量价信息组2个条件满足，认定重复，共享原始md5值，否则生成新的MD5值
# -tbl  dim.cts_trade_distinct_end
def get_md5_sql(tbl):
    sql = f'SHOW CREATE TABLE {tbl}'
    spark = SparkSQL()
    spark._final_spark_config = {'hive.exec.dynamic.partition': 'true',
                                 'hive.exec.dynamic.partition.mode': 'nonstrict',
                                 'spark.yarn.queue': 'cts',
                                 'spark.sql.crossJoin.enabled': 'true',
                                 'spark.executor.memory': '6g',
                                 'spark.executor.memoryOverhead': '2048',
                                 'spark.driver.memory': '4g',
                                 'spark.executor.instances': "5",
                                 'spark.executor.cores': '2'
                                 }
    ctbl = spark.query(sql)[0].collect()[0]['createtab_stmt']
    cols_list = re.findall(r'(`[^`]+`) ', ctbl)
    suff = 'i.'
    modified_list = [suff + s for s in cols_list]
    remove_id_sql = 'md5(concat_ws(\'-\',\n     {}) )  '.format(
        ', '.join([f'nvl(cast({col} as string), "null")' for col in modified_list if col != "i.`id`"]))
    contain_id_sql = 'md5(concat_ws(\'-\',\n     {}) ) '.format(
        ', '.join([f'nvl(cast({col} as string), "null")' for col in modified_list]))
    sel_end = (
        f"if((check_core_fields(i.`date`, array(i.jksmc, i.cksmc), array(i.cpms, i.hgbm)) = 1 AND"
        f" check_non_core_fields(i.`myzj`, i.`zl`, i.`sl`) = 0) OR "
        f"check_core_fields(i.`date`, array(i.jksmc, i.cksmc), array(i.cpms, i.hgbm)) = 0,"
        f"{contain_id_sql}  ,{remove_id_sql}  ) as md5")
    return sel_end


def check_core_fields(date: str, company_names: list, products: list):
    """
    检查核心字段 date,进口商名称或出口商名称,产品描述或海关编码
    Args:
        total_dollars:
        weights:
        quantities:

    Returns:
    """

    if date is None or str(date).strip() == '':
        return 0

    if not any(name is not None and str(name).strip() != '' for name in company_names):
        return 0

    if not any(product is not None and str(product).strip() != '' for product in products):
        return 0

    return 1


def check_non_core_fields(total_dollars: str, weights: str, quantities: str):
    """
    检查非核心字段
    Args:
        total_dollars:
        weights:
        quantities:

    Returns:

    """
    non_empty_count = 0
    if total_dollars is not None and str(total_dollars).strip() != '':
        non_empty_count += 1
    if weights is not None and str(weights).strip() != '':
        non_empty_count += 1
    if quantities is not None and str(quantities).strip() != '':
        non_empty_count += 1

    return 1 if non_empty_count >= 2 else 0