"""Snowflake connector class for TikTok Statistics tasks."""
import csv
import datetime

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

import config

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


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

    @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['artist_to_track']

    @property
    def tiktok_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['tiktok_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_tiktok_statistics(self):
        """Create tiktok statistics historical table."""
        params = dict(
            db=self.sf_config['db'],
            schema=self.sf_config['schema'],
            table_name=self.tiktok_statistics_table)
        return self.fetchone_query(sql_loader, 'create_tiktok_statistics', params)

    def create_staging_raw_tiktok_statistics(self):
        """Create staging raw tiktok 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_tiktok_statistics', params)

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

    def select_artists_stats(self):
        """Select all stats."""
        params = dict(
            db=self.sf_config['db'],
            schema=self.sf_config['schema'],
            table_name=self.tiktok_statistics_table)
        result = self.fetchall_query(sql_loader, 'select_artists_stats', params)
        return result

    def select_artist_stats(self, artist):
        """Select stats for certain artist."""
        params = dict(
            db=self.sf_config['db'],
            schema=self.sf_config['schema'],
            table_name=self.tiktok_statistics_table,
            artist=artist)
        result = self.fetchall_query(sql_loader, 'select_artist_stats', params)
        return result

    def update_artist_stats(self, artist: str, stats: dict):
        """Load main statistics table."""
        params = dict(
            db=self.sf_config['db'],
            schema=self.sf_config['schema'],
            table_name=self.tiktok_statistics_table,
            artist=artist,
            tiktok_link=stats.get('link'),
            current_followers=stats.get('current_followers'),
            weekly_change_in_followers=stats.get('weekly_change_in_followers'),
            daily_change_in_followers=stats.get('daily_change_in_followers'),
            current_weekly_change_in_followers=stats.get('current_weekly_change_in_followers'),
            last_week_followers=stats.get('last_week_followers'),
            percentage_change_in_followers=stats.get('percentage_change_in_followers'),
            current_followings=stats.get('current_followings'),
            weekly_change_in_followings=stats.get('weekly_change_in_followings'),
            daily_change_in_followings=stats.get('daily_change_in_followings'),
            current_weekly_change_in_followings=stats.get('current_weekly_change_in_followings'),
            last_week_followings=stats.get('last_week_followings'),
            percentage_change_in_followings=stats.get('percentage_change_in_followings'),
            current_likes=stats.get('current_likes'),
            weekly_change_in_likes=stats.get('weekly_change_in_likes'),
            daily_change_in_likes=stats.get('daily_change_in_likes'),
            current_weekly_change_in_likes=stats.get('current_weekly_change_in_likes'),
            last_week_likes=stats.get('last_week_likes'),
            percentage_change_in_likes=stats.get('percentage_change_in_likes'),
            last_processing_date=stats.get('last_processing_date'),
            last_week_processing_date=stats.get('last_week_processing_date'),
        )
        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.tiktok_statistics_table,
            last_processing_date=last_processing_date.strftime("%d-%m-%Y"),
            artist=artist
        )
        result = self.fetchall_query(sql_loader, 'update_artists_stats_last_processing_date', params)
        return result

    def update_stating_raw_tiktok_stats(self):
        """Load staging raw table."""
        params = dict(
            db=self.sf_config['db'],
            schema=self.sf_config['schema'],
            table_name=self.tiktok_statistics_table,
            staging_raw_table_name=self.staging_raw_table
        )
        result = self.fetchall_query(sql_loader, 'update_stating_raw_tiktok_stats', 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]) == 3 else [0] * 3
        except IndexError:
            weeklies = [0] * 3
        return dict(zip(['followers', 'followings', 'likes'], list(weeklies)))

    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 insert_artist_stats(self, artist, stats):
        """First TikTok statistics insertion."""
        params = dict(
            db=self.sf_config['db'],
            schema=self.sf_config['schema'],
            table_name=self.tiktok_statistics_table,
            artist=artist,
            tiktok_link=stats.get('link'),
            current_followers=stats.get('current_followers'),
            weekly_change_in_followers=stats.get('weekly_change_in_followers'),
            daily_change_in_followers=stats.get('daily_change_in_followers'),
            current_weekly_change_in_followers=stats.get('current_weekly_change_in_followers'),
            last_week_followers=stats.get('last_week_followers'),
            percentage_change_in_followers=stats.get('percentage_change_in_followers'),
            current_followings=stats.get('current_followings'),
            weekly_change_in_followings=stats.get('weekly_change_in_followings'),
            daily_change_in_followings=stats.get('daily_change_in_followings'),
            current_weekly_change_in_followings=stats.get('current_weekly_change_in_followings'),
            last_week_followings=stats.get('last_week_followings'),
            percentage_change_in_followings=stats.get('percentage_change_in_followings'),
            current_likes=stats.get('current_likes'),
            weekly_change_in_likes=stats.get('weekly_change_in_likes'),
            daily_change_in_likes=stats.get('daily_change_in_likes'),
            current_weekly_change_in_likes=stats.get('current_weekly_change_in_likes'),
            last_week_likes=stats.get('last_week_likes'),
            percentage_change_in_likes=stats.get('percentage_change_in_likes'),
            last_processing_date=stats.get('last_processing_date'),
            last_week_processing_date=stats.get('last_week_processing_date'),
        )
        result = self.fetchall_query(sql_loader, 'insert_artists_stats', params)
        return result