"""Snowflake connector class for Shazam tasks."""
import datetime

import config

from snowflake_connector.etl_connector import SQLLoader
from snowflake_connector.etl_connector import SnowflakeSQLExecutor

# Load SQL templates
sql_loader = SQLLoader(__file__)
looker_sql_loader = SQLLoader(__file__, folder='/looker_queries')


class YouTubeStatsSFExecutor(SnowflakeSQLExecutor):
    """Helper class to abstract Snowflake operations."""

    @property
    def stats_name(self):
        """Name of the stats.

        Should match dir name of this stats,
        stats_name in config.py of a statistics.

        Returns:
            str: Stats name, e.g. 'youtube_statistics'.
        """
        return config.STATS_NAME

    @property
    def artist_to_track_table(self):
        """Name of the artist_to_track table for the statistics.

        Returns:
            str: {stats}_artist_to_track table name.
        """
        return config.snowflake_table_names['youtube_artist_to_track']

    @property
    def youtube_statistics_table(self):
        """Name of the artist_to_track table for the statistics.

        Returns:
            str: {stats}_artist_to_track table name.
        """
        return config.snowflake_table_names['youtube_statistics']

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

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

    def create_youtube_statistics(self):
        """Create youtube statistics historical table."""
        params = dict(
            db=self.sf_config['db'],
            schema=self.sf_config['schema'],
            table_name=self.youtube_statistics_table)
        return self.fetchone_query(
            sql_loader, 'create_youtube_statistics', params)

    def create_staging_raw_youtube_statistics(self):
        """Create staging raw youtube statistics historical table."""
        params = dict(
            db=self.sf_config['db'],
            schema=self.sf_config['schema'],
            table_name=self.staging_raw_table)
        return self.fetchone_query(
            sql_loader, 'create_youtube_statistics', params)

    def select_artists_links(self):
        """Selecting artists links from youtube_artist_to_track."""
        params = dict(
            db=self.sf_config['db'],
            schema=self.sf_config['schema'],
            table_name=self.artist_to_track_table)
        return self.fetchall_query(sql_loader, 'select_artists', params)

    def select_artists_stats(self):
        """Load temp staging raw table."""
        params = dict(
            db=self.sf_config['db'],
            schema=self.sf_config['schema'],
            table_name=self.youtube_statistics_table)
        result = self.fetchall_query(
            sql_loader, 'select_artists_stats', params)
        return result

    def select_recent_stats(self):
        """Select artists with updated stats in last 3 days ."""
        params = dict(
            db=self.sf_config['db'],
            schema=self.sf_config['schema'],
            table_name=self.youtube_statistics_table)
        result = self.fetchall_query(sql_loader, 'select_recent_stats', params)
        return result

    def update_artist_stats(self, stats: dict):
        """Load main statistics table."""
        params = dict(
            db=self.sf_config['db'],
            schema=self.sf_config['schema'],
            table_name=self.youtube_statistics_table,
            current_subscribers=stats.get('current_subscribers'),
            last_week_subscribers=stats.get('last_week_subscribers'),
            weekly_change_in_subscribers=stats.get(
                'weekly_change_in_subscribers'),
            current_weekly_change_in_subscribers=stats.get(
                'current_weekly_change_in_subscribers'),
            daily_change_in_subscribers=stats.get(
                'daily_change_in_subscribers'),
            percentage_change_in_subscribers=stats.get(
                'percentage_change_in_subscribers'),
            acceleration_subscribers=stats.get('acceleration_subscribers'),
            current_videos=stats.get('videos_count'),
            current_likes=stats.get('current_likes'),
            last_week_likes=stats.get('last_week_likes'),
            weekly_change_in_likes=stats.get('weekly_change_in_likes'),
            current_weekly_change_in_likes=stats.get(
                'current_weekly_change_in_likes'),
            daily_change_in_likes=stats.get('daily_change_in_likes'),
            percentage_change_in_likes=stats.get('percentage_change_in_likes'),
            acceleration_likes=stats.get('acceleration_likes'),
            current_dislikes=stats.get('current_dislikes'),
            last_week_dislikes=stats.get('last_week_dislikes'),
            weekly_change_in_dislikes=stats.get('weekly_change_in_dislikes'),
            percentage_change_in_dislikes=stats.get(
                'percentage_change_in_dislikes'),
            current_views=stats.get('current_views'),
            last_week_views=stats.get('last_week_views'),
            weekly_change_in_views=stats.get('weekly_change_in_views'),
            current_weekly_change_in_views=stats.get(
                'current_weekly_change_in_views'),
            daily_change_in_views=stats.get('daily_change_in_views'),
            percentage_change_in_views=stats.get('percentage_change_in_views'),
            acceleration_views=stats.get('acceleration_views'),
            current_comments=stats.get('current_comments'),
            last_week_comments=stats.get('last_week_comments'),
            weekly_change_in_comments=stats.get('weekly_change_in_comments'),
            percentage_change_in_comments=stats.get(
                'percentage_change_in_comments'),
            likes_engagement=stats.get('likes_engagement'),
            comments_engagement=stats.get('comments_engagement'),
            the_latest_release=stats.get('the_latest_release'),
            last_processing_date=stats.get(
                'last_processing_date').strftime('%d-%m-%Y'),
            last_week_processing_date=stats.get(
                'last_week_processing_date').strftime('%d-%m-%Y'),
            artist=stats.get('id')
        )
        result = self.fetchall_query(
            sql_loader, 'update_artists_stats', params)
        return result

    def update_artist_stats_last_processing_date(
            self, artist: str, last_processing_date: datetime):
        """Update artists statistics table on failure."""
        params = dict(
            db=self.sf_config['db'],
            schema=self.sf_config['schema'],
            table_name=self.youtube_statistics_table,
            last_processing_date=last_processing_date,
            artist=artist
        )
        result = self.fetchall_query(
            sql_loader, 'update_artists_stats_last_processing_date', params)
        return result

    def update_stating_raw_youtube_stats(self):
        """Load staging raw table."""
        params = dict(
            db=self.sf_config['db'],
            schema=self.sf_config['schema'],
            table_name=self.youtube_statistics_table,
            staging_raw_table_name=self.staging_raw_table
        )
        result = self.fetchall_query(
            sql_loader, 'update_stating_raw_youtube_stats', params)
        return result

    def delete_from_staging_raw(self):
        """Delete from staging raw today's rows to prevent duplicates."""
        params = dict(
            db=self.sf_config['db'],
            schema=self.sf_config['schema'],
            staging_raw_table=self.staging_raw_table,
            date=datetime.datetime.today().strftime('%Y-%m-%d'))
        result = self.fetchall_query(
            sql_loader, 'delete_from_staging_raw', params)
        return result

    def select_weekly_change(self, artist,
                             first_day_of_period=0,
                             last_day_of_period=-7):
        """Select artist weekly change in metrics from staging raw table."""
        params = dict(
            db=self.sf_config['db'],
            schema=self.sf_config['schema'],
            table_name=self.staging_raw_table,
            artist=artist,
            first_day_of_period=first_day_of_period,
            last_day_of_period=last_day_of_period
        )
        result = self.fetchall_query(
            sql_loader, 'select_weekly_change', params)
        try:
            weeklies = result[0] if len(result[0]) == 5 else [0] * 5
        except IndexError:
            weeklies = [0] * 5
        return dict(zip(['subscribers', 'likes', 'dislikes',
                         'views', 'comments'], list(weeklies)))

    def insert_artist_stats(
            self, artist, stats,
            table_name=config.snowflake_table_names['youtube_statistics']):
        """First YouTube statistics insertion."""
        params = dict(
            db=self.sf_config['db'],
            schema=self.sf_config['schema'],
            table_name=table_name,
            artist=artist,
            artist_id=stats.get('id'),
            current_subscribers=stats.get('current_subscribers'),
            last_week_subscribers=stats.get('last_week_subscribers'),
            weekly_change_in_subscribers=stats.get(
                'weekly_change_in_subscribers'),
            current_weekly_change_in_subscribers=stats.get(
                'current_weekly_change_in_subscribers'),
            daily_change_in_subscribers=stats.get(
                'daily_change_in_subscribers'),
            percentage_change_in_subscribers=stats.get(
                'percentage_change_in_subscribers'),
            acceleration_subscribers=stats.get('acceleration_subscribers'),
            current_videos=stats.get('videos_count'),
            current_likes=stats.get('current_likes'),
            last_week_likes=stats.get('last_week_likes'),
            weekly_change_in_likes=stats.get('weekly_change_in_likes'),
            current_weekly_change_in_likes=stats.get(
                'current_weekly_change_in_likes'),
            daily_change_in_likes=stats.get('daily_change_in_likes'),
            percentage_change_in_likes=stats.get('percentage_change_in_likes'),
            acceleration_likes=stats.get('acceleration_likes'),
            current_dislikes=stats.get('current_dislikes'),
            last_week_dislikes=stats.get('last_week_dislikes'),
            weekly_change_in_dislikes=stats.get('weekly_change_in_dislikes'),
            percentage_change_in_dislikes=stats.get(
                'percentage_change_in_dislikes'),
            current_views=stats.get('current_views'),
            last_week_views=stats.get('last_week_views'),
            weekly_change_in_views=stats.get('weekly_change_in_views'),
            current_weekly_change_in_views=stats.get(
                'current_weekly_change_in_views'),
            daily_change_in_views=stats.get('daily_change_in_views'),
            percentage_change_in_views=stats.get('percentage_change_in_views'),
            acceleration_views=stats.get('acceleration_views'),
            current_comments=stats.get('current_comments'),
            last_week_comments=stats.get('last_week_comments'),
            weekly_change_in_comments=stats.get('weekly_change_in_comments'),
            percentage_change_in_comments=stats.get(
                'percentage_change_in_comments'),
            likes_engagement=stats.get('likes_engagement'),
            comments_engagement=stats.get('comments_engagement'),
            the_latest_release=stats.get('the_latest_release'),
            last_processing_date=stats.get(
                'last_processing_date').strftime('%d-%m-%Y'),
            last_week_processing_date=stats.get(
                'last_week_processing_date').strftime('%d-%m-%Y')
        )
        result = self.fetchall_query(
            sql_loader, 'insert_artists_stats', params)
        return result