# Webhooks for external integrations.
from typing import Text, Any, Dict
from django.http import HttpRequest, HttpResponse
from zerver.decorator import api_key_only_webhook_view
from zerver.lib.actions import check_send_private_message
from zerver.lib.request import REQ, has_request_variables
from zerver.lib.response import json_success
from zerver.models import UserProfile, get_user_profile_by_email

@api_key_only_webhook_view("dialogflow")
@has_request_variables
def api_dialogflow_webhook(request: HttpRequest, user_profile: UserProfile,
                           payload: Dict[str, Any]=REQ(argument_type='body'),
                           email: str=REQ(default='foo')) -> HttpResponse:
    status = payload["status"]["code"]

    if status == 200:
        result = payload["result"]["fulfillment"]["speech"]
        if not result:
            alternate_result = payload["alternateResult"]["fulfillment"]["speech"]
            if not alternate_result:
                body = u"DialogFlow couldn't process your query."
            else:
                body = alternate_result
        else:
            body = result
    else:
        error_status = payload["status"]["errorDetails"]
        body = u"{} - {}".format(status, error_status)

    profile = get_user_profile_by_email(email)
    check_send_private_message(user_profile, request.client, profile, body)
    return json_success()