"""
Peloton Monthly Ingestion Workflow.

Ingest Peloton monthly usage files delivered per country to the
sme-ca-prod-partners S3 bucket.
"""

from garcon.param import StaticParam
from garcon_contrib.dynamo_feed_status import garcon_feed_status
from snowflake_connector.etl_connector import SQLLoader

from feed_ingestion.flows import base
from feed_ingestion.flows.peloton import config
from feed_ingestion.flows.peloton import tasks
from feed_ingestion.flows.peloton.stage_loader import PelotonSL
from feed_ingestion.tasks import date_tasks
from feed_ingestion.tasks import overall_status_tasks


class Flow(base.FlowBase, base.FlowConfigMixin):
    """Class representing the Peloton monthly workflow."""

    def __init__(self):
        """Initialize flow object."""
        super(Flow, self).__init__(config.feed_name, version='1.0')

    def decider(self, schedule):
        """Activity decider.

        Args:
            schedule (callable): The scheduler method.
        """
        get_first_day_of_month = schedule(
            'get_first_day_of_month', self.get_first_day_of_month)

        bootstrap = schedule(
            'bootstrap', self.bootstrap_activity,
            requires=[get_first_day_of_month])

        grab_drop_files = schedule(
            'grab_drop_files',
            self.grab_drop_files,
            requires=[bootstrap])

        # If the file has not landed yet, stop here.
        if grab_drop_files.result.get('grab_drop_files.stop'):
            return

        # Status updated to DOWNLOADED if files are present
        set_status_to_downloaded = schedule(
            'set_status_to_downloaded',
            self.set_status_to_downloaded,
            requires=[grab_drop_files])

        load_staging_raw_table = schedule(
            'load_staging_raw_table',
            self.load_staging_raw_table,
            requires=[set_status_to_downloaded])

        schedule(
            'set_status_to_ingested',
            self.set_status_to_ingested,
            requires=[load_staging_raw_table])

    @property
    def get_first_day_of_month(self):
        """Get the first day of the month of context_date."""
        return self.create(
            name='get_first_day_of_month',
            tasks=base.SyncRunner(
                date_tasks.get_first_day_of_month.fill(
                    namespace='get_first_day_of_month',
                    date='context_date')))

    @property
    def bootstrap_activity(self):
        """First activity for the workflow."""
        return self.create(
            name='bootstrap',
            tasks=base.SyncRunner(
                tasks.bootstrap.fill(
                    namespace='bootstrap',
                    date='get_first_day_of_month.date',
                    reload='reload')))

    @property
    def grab_drop_files(self):
        """Copy Peloton files from the SME drop bucket to the archive."""
        return self.create(
            name='grab_drop_files',
            tasks=base.SyncRunner(
                tasks.grab_drop_files.fill(
                    namespace='grab_drop_files',
                    feed_name='bootstrap.feed_name',
                    date='bootstrap.date',
                    source_files='bootstrap.source_files')))

    @property
    def set_status_to_downloaded(self):
        """Set overall feed status to DOWNLOADED."""
        return self.create(
            name='set_status_to_downloaded',
            tasks=base.SyncRunner(
                overall_status_tasks.set_overall_status.fill(
                    namespace='set_status_to_downloaded',
                    feed_name='bootstrap.feed_name',
                    date='bootstrap.date',
                    status=StaticParam(
                        garcon_feed_status.STATUS_DOWNLOADED))))

    load_staging_raw_table = PelotonSL.load_activity(
        secrets_path=config.secrets_path,
        sql_loader=SQLLoader(__file__),
        requirements=dict(
            date='bootstrap.date',
            feed_name='bootstrap.feed_name',
            staging_raw_table_name='bootstrap.staging_raw_table',
            s3_dir_path='bootstrap.s3_dir_path',
            source_files_dict='grab_drop_files.source_files_dict',
            sfdb_params='sfdb_params'))

    @property
    def set_status_to_ingested(self):
        """Set the overall feed status to INGESTED."""
        return self.create(
            name='set_status_to_ingested',
            tasks=base.SyncRunner(
                overall_status_tasks.set_overall_status.fill(
                    namespace='set_status_to_ingested',
                    feed_name='bootstrap.feed_name',
                    date='bootstrap.date',
                    status=StaticParam(
                        garcon_feed_status.STATUS_INGESTED))))