import datetime
import traceback
import pandas as pd
from odps import ODPS
from threading import Timer
from config import set_config
from log import Log
from utils.utils import get_data_from_odps
from words_func import word_cut
from db_helper import MysqlHelper
config_, env = set_config()
log_ = Log()
mysql_helper = MysqlHelper()
features = ['title', 'source']


def check_table_partition_exits(date, project, table, connect_timeout=3000, read_timeout=500000,
                                pool_maxsize=1000, pool_connections=1000):
    """
    判断表中是否存在这个分区
    :param date: 日期 type-string '%Y%m%d'
    :param project: type-string
    :param table: 表名 type-string
    :param connect_timeout: 连接超时设置
    :param read_timeout: 读取超时设置
    :param pool_maxsize:
    :param pool_connections:
    :return: records
    """
    odps = ODPS(
        access_id=config_.ODPS_CONFIG['ACCESSID'],
        secret_access_key=config_.ODPS_CONFIG['ACCESSKEY'],
        project=project,
        endpoint=config_.ODPS_CONFIG['ENDPOINT'],
        connect_timeout=connect_timeout,
        read_timeout=read_timeout,
        pool_maxsize=pool_maxsize,
        pool_connections=pool_connections
    )
    t = odps.get_table(name=table)
    return t.exist_partition(partition_spec=f'dt={date}')


def data_check(project, table, now_date):
    """检查数据是否准备好"""
    odps = ODPS(
        access_id=config_.ODPS_CONFIG['ACCESSID'],
        secret_access_key=config_.ODPS_CONFIG['ACCESSKEY'],
        project=project,
        endpoint=config_.ODPS_CONFIG['ENDPOINT'],
        connect_timeout=3000,
        read_timeout=500000,
        pool_maxsize=1000,
        pool_connections=1000
    )

    try:
        dt = datetime.datetime.strftime(now_date, '%Y%m%d')
        check_res = check_table_partition_exits(date=dt, project=project, table=table)
        if check_res:
            sql = f'select * from {project}.{table} where dt = {dt}'
            with odps.execute_sql(sql=sql).open_reader() as reader:
                data_count = reader.count
        else:
            data_count = 0
    except Exception as e:
        data_count = 0
    return data_count


def get_title_data(project, table, now_date):
    """获取站内外视频标题数据"""
    dt = datetime.datetime.strftime(now_date, '%Y%m%d')
    records = get_data_from_odps(date=dt, project=project, table=table)
    feature_data = []
    for record in records:
        item = {}
        for feature_name in features:
            item[feature_name] = record[feature_name]
        feature_data.append(item)
    feature_df = pd.DataFrame(feature_data)
    return feature_df


def update_cut_words_result(text, source, words_list):
    """
    分词结果入库
    :param text: 原始文本 type-string
    :param source: 文本来源 type-int
    :param words_list: 分词结果 type-list
    :return:
    """
    # 分词结果拼接成字符串
    words = ','.join(words_list)
    # 判断原始文本是否已存在
    select_sql = f"SELECT id FROM word.cut_words_result WHERE text = '{text}';"
    res = mysql_helper.get_data(sql=select_sql)
    if res is None or len(res) == 0:
        # 不存在，插入
        insert_sql = f"insert into word.cut_words_result (text, words, source) values ('{text}', '{words}', {source});"
        log_.info(f"insert_sql = {insert_sql}")
        mysql_helper.add_data(sql=insert_sql)
    else:
        # 存在，更新
        update_sql = f"""update word.cut_words_result set words = '{words}', source = {source}, 
        update_time = '{datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")}' where id = {res[0][0]};"""
        log_.info(f"update_sql = {update_sql}")
        mysql_helper.add_data(sql=update_sql)


def update_hot_word(words_list, source):
    """
    词入库
    :param words_list: 词列表 type-list
    :param source: 词来源 type-int
    :return:
    """
    for word in words_list:
        if len(word) == 0:
            continue
        # 判断词是否已存在
        select_sql = f"SELECT id, source FROM word.hot_word WHERE word = '{word}';"
        res = mysql_helper.get_data(sql=select_sql)
        if res is None or len(res) == 0:
            # 不存在，插入
            insert_sql = f"insert into word.hot_word (word, source) values ('{word}', {source});"
            mysql_helper.add_data(sql=insert_sql)
        else:
            # 存在，更新
            if source != res[0][1]:
                source = 3
            update_sql = \
                f"""update word.hot_word set source = {source}, 
                update_time = '{datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")}' where id = {res[0][0]};"""
            mysql_helper.add_data(sql=update_sql)


def data_update(project, table, now_date):
    """数据更新"""
    # 获取站内外视频标题数据
    df = get_title_data(project=project, table=table, now_date=now_date)
    df['source'] = df['source'].astype(int)
    for source in [1, 2]:
        df_temp = df[df['source'] == source]
        title_list = df_temp['title'].to_list()
        log_.info(f"source = {source}, count = {len(title_list)}")
        for title in title_list:
            log_.info(f"title: {title}")
            if title is None:
                continue
            if len(title) == 0:
                return
            # 1. 分词
            words_list = word_cut(text=title)
            log_.info(f"words_list: {words_list}")
            # 2. 分词结果入库
            update_cut_words_result(text=title, source=source, words_list=words_list)
            # 3. 词入库
            update_hot_word(words_list=words_list, source=source)


def timer_check():
    try:
        project = config_.TITLE_DATA['project']
        table = config_.TITLE_DATA['table']
        now_date = datetime.datetime.today()
        log_.info(f"now_date: {datetime.datetime.strftime(now_date, '%Y%m%d')}")
        # 查看当天更新的数据是否已准备好
        data_count = data_check(project=project, table=table, now_date=now_date)
        if data_count > 0:
            log_.info(f'data_count = {data_count}')
            # 数据准备好，进行更新
            data_update(project=project, table=table, now_date=now_date)
            log_.info(f"data update end!")
        else:
            # 数据没准备好，1分钟后重新检查
            Timer(60, timer_check).start()
    except Exception as e:
        log_.error(f"数据更新失败, exception: {e}, traceback: {traceback.format_exc()}")


if __name__ == '__main__':
    timer_check()