from __future__ import absolute_import
from typing import Optional, Any, Dict
from collections import OrderedDict
from django.views.generic import TemplateView
from django.conf import settings
from django.http import HttpRequest, HttpResponse

import ujson

from zerver.lib import bugdown
from zerver.lib.integrations import INTEGRATIONS
from zproject.jinja2 import render_to_response

class IntegrationView(TemplateView):
    template_name = 'zerver/integrations.html'

    def get_context_data(self, **kwargs):
        # type: (Optional[Dict[str, Any]]) -> Dict[str, str]
        context = super(IntegrationView, self).get_context_data(**kwargs)
        alphabetical_sorted_integration = OrderedDict(sorted(INTEGRATIONS.items()))
        context['integrations_dict'] = alphabetical_sorted_integration

        settings_html = '<a href="../#settings">Zulip settings page</a>'
        subscriptions_html = '<a target="_blank" href="../#subscriptions">subscriptions page</a>'

        external_api_path_subdomain = settings.EXTERNAL_API_PATH
        external_api_uri_subdomain = settings.EXTERNAL_API_URI

        context['settings_html'] = settings_html
        context['subscriptions_html'] = subscriptions_html
        context['external_api_path_subdomain'] = external_api_path_subdomain
        context['external_api_uri_subdomain'] = external_api_uri_subdomain

        return context


def api_endpoint_docs(request):
    # type: (HttpRequest) -> HttpResponse
    raw_calls = open('templates/zerver/api_content.json', 'r').read()
    calls = ujson.loads(raw_calls)
    langs = set()
    for call in calls:
        call["endpoint"] = "%s/v1/%s" % (settings.EXTERNAL_API_URI, call["endpoint"])
        call["example_request"]["curl"] = call["example_request"]["curl"].replace("https://api.zulip.com",
                                                                                  settings.EXTERNAL_API_URI)
        response = call['example_response']
        if '\n' not in response:
            # For 1-line responses, pretty-print them
            extended_response = response.replace(", ", ",\n ")
        else:
            extended_response = response
        call['rendered_response'] = bugdown.convert("~~~ .py\n" + extended_response + "\n~~~\n", "default")
        for example_type in ('request', 'response'):
            for lang in call.get('example_' + example_type, []):
                langs.add(lang)
    return render_to_response(
            'zerver/api_endpoints.html', {
                'content': calls,
                'langs': langs,
                },
        request=request)