"""Analytics handlers.

The analytics handlers provide endpoints to facilitate metric grouping and
fetching. Some of those endpoints are currently used as replacements of VAPI,
which requires an extra layer of information (vapi envelope).

"""

from flask import request
from oto import response as oto_response
from oto.adaptors import flask as oto_flask
from owsrequest import flask_request

from analytics import api
from analytics import config
from analytics.api import app
from analytics.logic import track_summary
from analytics.logic import product_summary
from analytics.utils.handlers import parse_date_values
from analytics.utils.newrelic import track_custom_parameters
from analytics.validation import request_args_validation


@api.route(
    config.HEALTH_CHECK,
    methods=['GET'])
def hello_world():
    """Hello World health check."""
    return oto_flask.flaskify(oto_response.Response(message='Hello World!'))


@app.route('/track-summary/')
def get_track_summary():
    """Get geographic insights data by region.

    Request params:
        from_date (str): start of date range
        to_date (str): end of date range
        search_filter (str): 'by_store', 'by_country', 'by_source'
        isrc (str): an ISRC.
        territory_code(str): a territory code

    Returns:
        flask.Response with a dict of geographic insights data as message.

    """
    grass_validation = flask_request.verify_grass_headers(request)
    if not grass_validation:
        return oto_flask.flaskify(grass_validation)
    account_type, account_id = flask_request.get_grass_headers(request)

    validation = request_args_validation.validate_request_args(request.args)

    if not validation:
        return oto_flask.flaskify(validation)

    start_date, end_date = parse_date_values(request.args)
    isrc = request.args.get('isrc')
    search_filter = request.args.get('search_filter')
    group_daily = request.args.get('group_daily') == 'true'
    transaction = request.args.get('transaction')
    include_growth = request.args.get('include_growth') == 'true'

    newrelic_parameters = {
        'account_id': account_id,
        'start_date': start_date,
        'end_date': end_date,
        'isrc': isrc,
        'search_filter': search_filter,
        'group_daily': group_daily,
        'transaction': transaction,
        'include_growth': include_growth
    }

    track_custom_parameters(**newrelic_parameters)

    test = oto_flask.flaskify(
        track_summary.get_track_summary(
            start_date, end_date, isrc, search_filter, account_type,
            account_id, group_daily, transaction, include_growth))

    return test


@app.route('/product-summary/')
def get_product_summary():
    """Get geographic insights data by region.

    Request params:
        from_date (str): start of date range
        to_date (str): end of date range
        search_filter (str): 'by_store', 'by_country', 'by_source'
        upc (str): a UPC.
        territory_code(str): a territory code

    Returns:
        flask.Response with a dict of geographic insights data as message.

    """
    grass_validation = flask_request.verify_grass_headers(request)
    if not grass_validation:
        return oto_flask.flaskify(grass_validation)
    account_type, account_id = flask_request.get_grass_headers(request)

    validation = request_args_validation.validate_request_args(request.args)

    if not validation:
        return oto_flask.flaskify(validation)

    start_date, end_date = parse_date_values(request.args)
    upc = request.args.get('upc')
    search_filter = request.args.get('search_filter')
    group_daily = request.args.get('group_daily') == 'true'
    transaction = request.args.get('transaction')
    include_growth = request.args.get('include_growth') == 'true'

    newrelic_parameters = {
        'account_id': account_id,
        'start_date': start_date,
        'end_date': end_date,
        'upc': upc,
        'search_filter': search_filter,
        'group_daily': group_daily,
        'transaction': transaction,
        'include_growth': include_growth
    }

    track_custom_parameters(**newrelic_parameters)

    test = oto_flask.flaskify(
        product_summary.get_product_summary(
            start_date, end_date, upc, search_filter, account_type,
            account_id, group_daily, transaction, include_growth))

    return test