"""Snowflake connector class for the Kugou's tasks."""

from snowflake_connector.etl_connector import SQLLoader

from feed_ingestion.common.fact_analytics_sf.base_executor \
    import SnowflakeSQLExecutorFA
from feed_ingestion.flows.kugou import config

sql_loader = SQLLoader(__file__)


class Kugou(SnowflakeSQLExecutorFA):
    """Helper class to abstract Snowflake operations.

    This class inherits from SnowflakeSQLExecutor class, which provides basic
    set of methods. This class extends SnowflakeSQLExecutor with some specific
    methods, which are useful to encapsulate some flow specific operations.
    """

    @property
    def feed_name(self):
        """Name of the feed.

        Should match dir name of this feed, feed_name in config.py of a feed,
        and a key of executors dict in feed_ingestion/common/
        fact_analytics_sf/__init__.py file.
        Returns:
            str: Feed name, e.g. 'deezer_daily_sf'.
        """
        return '_'.join([config.feed_name, self.licensor])

    @property
    def feedid(self):
        """Id of the feed.

        Returns:
            str: Feed id
        """
        return config.feedid

    @property
    def storeid(self):
        """Storeid of feed data.

        Should match dim_store and feed config value.
        Returns:
            integer: Feed's storeid.
        """
        return config.storeid

    @property
    def staging_raw_table(self):
        """Name of staging raw table.

        Returns:
            str: staging_raw table name
        """
        return config.snowflake_table_names['staging_raw']

    def load_staging_fact_table(self, date):
        """Load staging fact_analytics table from staging_raw table.

        Args:
            date (str): Date of the data being process (YYYY-MM-DD).
        """
        self.execute_query(
            sql_loader, 'load_staging_fact', params=dict(
                db=self.sf_config['db'],
                schema=self.sf_config['schema'],
                staging_fact_table=self.staging_fact_table(date),
                staging_raw_table=self.staging_raw_table,
                feedid=self.feedid,
                storeid=self.storeid,
                reportdate=date,
                licensor=self.licensor))

    def load_fact_error_data(self, date, **kwargs):
        """Load unmatched data into fact_analytics_error.

        Args:
            date (str): Date of the data being process (YYYY-MM-DD).
        """
        self.execute_query(
            sql_loader, 'load_fact_analytics_error', params=dict(
                db=self.sf_config['db'],
                schema=self.sf_config['schema'],
                fact_error_table=self.fact_error_table,
                staging_fact_table=self.staging_fact_table(date),
                staging_raw_table=self.staging_raw_table,
                feedid=self.feedid,
                reportdate=date,
                **kwargs
            ))


class KugouTheOrchardFA(Kugou):
    """Helper class to abstract Snowflake operations."""

    @property
    def licensor(self):
        """Licensor."""
        return 'theorchard'


class KugouSMEFA(Kugou):
    """Helper class to abstract Snowflake operations."""

    @property
    def licensor(self):
        """Licensor."""
        return 'sme'