from custom_decorators import singleton
from database import Database
from loguru import logger
from utils.datetime import current_timestamp


@singleton
class OrderRepository:
    def __init__(self, config):
        self.db = Database(config['MYSQL'])

    def create(self, order):
        timestamp = current_timestamp()
        order.create_timestamp = timestamp
        order.update_timestamp = timestamp
        sql, params = order.insert_sql()
        logger.debug(sql)
        logger.debug(params)
        try:
            cursor = self.db.execute_query(sql, params)
            cursor.close()
            self.db.commit()
            return timestamp
        except Exception:
            self.db.rollback()
            raise

    def update_status(self, order_id, status):
        try:
            self.db.execute_query("UPDATE orders "
                                  "SET status = %s, update_timestamp = %s "
                                  "WHERE order_id = %s",
                                  [status, current_timestamp(), order_id])
            self.db.commit()
        except Exception:
            self.db.rollback()
            raise

    def get_order_info(self, order_id):
        sql = 'SELECT quant, from_address, to_address, create_timestamp FROM orders WHERE order_id = %s'
        logger.debug(f'getting order {order_id} info')
        cursor = self.db.execute_query(sql, [order_id])
        result = cursor.fetchone()
        cursor.close()
        logger.debug(f'order {order_id} info: {result}')
        return result

    def query(self, order, offset, limit):
        select_sql, params = order.select_sql(
            query_columns=['order_id', 'name', 'phone', 'email', 'quant', 'payment_method', 'from_address',
                           'create_timestamp', 'update_timestamp', 'status']
        )
        select_sql = f"{select_sql} ORDER BY update_timestamp DESC LIMIT %s OFFSET %s"
        params = params + [limit, offset]
        logger.debug(f'querying order {order.id} info')
        logger.debug(f'select_sql: {select_sql}')
        logger.debug(f'params: {params}')
        cursor = self.db.execute_query(select_sql, params)
        result = cursor.fetchmany(limit)
        cursor.close()
        return result

    def count(self, order):
        select_sql, params = order.select_sql(
            query_columns=['count(*)']
        )
        cursor = self.db.execute_query(select_sql, params)
        result = cursor.fetchone()[0]
        cursor.close()
        return result