"""Model for top countries streams or downloads."""

from ddtrace import tracer

from sound_recordings.connectors import snowflake
from sound_recordings.constants import cache
from sound_recordings.utils import format_sql, store_availability
from sound_recordings.utils.cache import cache_in_redis

SOUND_RECORDING_COUNTRIES_AGGREGATE_STREAMS_FIELDS = ["country_code", "streams"]
SOUND_RECORDING_COUNTRIES_DOWNLOADS_FIELDS = ["country_code", "downloads"]

SQLLoader = snowflake.SQLLoader(__file__)


def _get_top_countries_result(
    permissions_filter,
    isrc,
    query,
    fields,
    distributors,
    store_ids=[],
    start_date=None,
    end_date=None,
):

    params = {
        **permissions_filter,
        "isrc": isrc,
        "distributors": distributors,
        "store_ids": store_ids,
        "start_date": start_date,
        "end_date": end_date,
    }

    sql = SQLLoader.load_query(query)
    sql = format_sql.format_with_permissions_filter(
        sql, permissions_filter, start_date=start_date, end_date=end_date
    )

    records = snowflake.fetchall(sql, params)

    return [dict(zip(fields, record)) for record in records]


@tracer.wrap(name="get_top_countries_streams")
@cache_in_redis(ttl=cache.SECONDS_PER_HOUR)
def get_top_countries_aggregate_streams(
    permissions_filter, isrc, distributors, store_ids=[], start_date=None, end_date=None
):
    """Get top countries aggregate streams for a given ISRC.

    Args:
        permissions_filter (dict): dict containing resources users can access
        isrc (str): ISRC of track to fetch downloads for.
        distributors (list): List of distributors names
        store_ids (list): List of store ids to filter by
        start_date (datetime.date): Start date
        end_date (datetime.date): End date

    Returns:
        list: top countries by stream count for sound recording

    """
    if len(store_ids) == 0:
        store_ids = store_availability.get_store_ids()
    else:
        store_ids = sorted(
            list(set(store_ids).intersection(store_availability.get_store_ids()))
        )

    if len(store_ids) == 0:
        return []

    return _get_top_countries_result(
        permissions_filter,
        isrc,
        "top_countries_aggregate_streams",
        SOUND_RECORDING_COUNTRIES_AGGREGATE_STREAMS_FIELDS,
        distributors,
        store_ids,
        start_date,
        end_date,
    )


@tracer.wrap(name="get_top_countries_downloads")
@cache_in_redis(ttl=cache.SECONDS_PER_HOUR)
def get_top_countries_downloads(
    permissions_filter, isrc, distributors, store_ids=[], start_date=None, end_date=None
):
    """Get top countries downloads for a given ISRC.

    Args:
        permissions_filter (dict): dict containing resources users can access
        isrc (str): ISRC of track to fetch downloads for.
        distributors (list): List of distributors names
        store_ids (list): List of store ids to filter by
        start_date (datetime.date): Start date
        end_date (datetime.date): End date
        offset (int): Pagination offset
        limit (int): Pagination limit

    Returns:
        list: top countries by download count for sound recording

    """
    if len(store_ids) == 0:
        store_ids = store_availability.get_download_store_ids()
    else:
        store_ids = sorted(
            list(
                set(store_ids).intersection(store_availability.get_download_store_ids())
            )
        )

    if len(store_ids) == 0:
        return []

    return _get_top_countries_result(
        permissions_filter,
        isrc,
        "top_countries_downloads",
        SOUND_RECORDING_COUNTRIES_DOWNLOADS_FIELDS,
        distributors,
        store_ids,
        start_date,
        end_date,
    )