from flask import (
    Blueprint,
    jsonify,
    request
)

from notifications_utils.recipients import try_validate_and_format_phone_number

from app.dao.inbound_sms_dao import (
    dao_get_inbound_sms_for_service,
    dao_count_inbound_sms_for_service,
    dao_get_inbound_sms_by_id,
    dao_get_paginated_most_recent_inbound_sms_by_user_number_for_service
)
from app.dao.service_data_retention_dao import fetch_service_data_retention_by_notification_type
from app.errors import register_errors
from app.schema_validation import validate

from app.inbound_sms.inbound_sms_schemas import get_inbound_sms_for_service_schema

inbound_sms = Blueprint(
    'inbound_sms',
    __name__,
    url_prefix='/service/<uuid:service_id>/inbound-sms'
)

register_errors(inbound_sms)


@inbound_sms.route('', methods=['POST'])
def post_inbound_sms_for_service(service_id):
    form = validate(request.get_json(), get_inbound_sms_for_service_schema)
    user_number = form.get('phone_number')

    if user_number:
        # we use this to normalise to an international phone number - but this may fail if it's an alphanumeric
        user_number = try_validate_and_format_phone_number(user_number, international=True)

    inbound_data_retention = fetch_service_data_retention_by_notification_type(service_id, 'sms')
    limit_days = inbound_data_retention.days_of_retention if inbound_data_retention else 7

    results = dao_get_inbound_sms_for_service(service_id, user_number=user_number, limit_days=limit_days)
    return jsonify(data=[row.serialize() for row in results])


@inbound_sms.route('/most-recent', methods=['GET'])
def get_most_recent_inbound_sms_for_service(service_id):
    # used on the service inbox page
    page = request.args.get('page', 1)

    inbound_data_retention = fetch_service_data_retention_by_notification_type(service_id, 'sms')
    limit_days = inbound_data_retention.days_of_retention if inbound_data_retention else 7

    # get most recent message for each user for service
    results = dao_get_paginated_most_recent_inbound_sms_by_user_number_for_service(service_id, int(page), limit_days)
    return jsonify(
        data=[row.serialize() for row in results.items],
        has_next=results.has_next
    )


@inbound_sms.route('/summary')
def get_inbound_sms_summary_for_service(service_id):
    # this is for the dashboard, so always limit to 7 days, even if they have a longer data retention
    count = dao_count_inbound_sms_for_service(service_id, limit_days=7)
    most_recent = dao_get_inbound_sms_for_service(service_id, limit=1)

    return jsonify(
        count=count,
        most_recent=most_recent[0].created_at.isoformat() if most_recent else None
    )


@inbound_sms.route('/<uuid:inbound_sms_id>', methods=['GET'])
def get_inbound_by_id(service_id, inbound_sms_id):
    message = dao_get_inbound_sms_by_id(service_id, inbound_sms_id)

    return jsonify(message.serialize()), 200