mirror of
https://github.com/zulip/zulip.git
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404 lines
16 KiB
Python
404 lines
16 KiB
Python
import os
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import random
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import re
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from collections import OrderedDict
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from collections.abc import Callable
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from dataclasses import dataclass
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from typing import Any
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from django.conf import settings
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from django.http import HttpRequest, HttpResponse, HttpResponseNotFound
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from django.template import loader
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from django.template.response import TemplateResponse
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from django.views.generic import TemplateView
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from lxml import html
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from lxml.etree import Element, SubElement, XPath, _Element
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from markupsafe import Markup
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from typing_extensions import override
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from zerver.context_processors import zulip_default_context
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from zerver.decorator import add_google_analytics_context
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from zerver.lib.html_to_text import get_content_description
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from zerver.lib.integrations import (
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CATEGORIES,
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INTEGRATIONS,
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META_CATEGORY,
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HubotIntegration,
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PythonAPIIntegration,
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WebhookIntegration,
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get_all_event_types_for_integration,
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)
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from zerver.lib.subdomains import get_subdomain
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from zerver.lib.templates import render_markdown_path
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from zerver.lib.typed_endpoint import PathOnly, typed_endpoint
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from zerver.models import Realm
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from zerver.openapi.openapi import get_endpoint_from_operationid, get_openapi_summary
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@dataclass
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class DocumentationArticle:
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article_path: str
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article_http_status: int
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endpoint_path: str | None
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endpoint_method: str | None
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def add_api_url_context(context: dict[str, Any], request: HttpRequest) -> None:
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context.update(zulip_default_context(request))
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subdomain = get_subdomain(request)
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if subdomain != Realm.SUBDOMAIN_FOR_ROOT_DOMAIN or not settings.ROOT_DOMAIN_LANDING_PAGE:
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display_subdomain = subdomain
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html_settings_links = True
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else:
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display_subdomain = "yourZulipDomain"
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html_settings_links = False
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display_host = Realm.host_for_subdomain(display_subdomain)
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api_url_scheme_relative = display_host + "/api"
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api_url = settings.EXTERNAL_URI_SCHEME + api_url_scheme_relative
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zulip_url = settings.EXTERNAL_URI_SCHEME + display_host
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context["external_url_scheme"] = settings.EXTERNAL_URI_SCHEME
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context["api_url"] = api_url
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context["api_url_scheme_relative"] = api_url_scheme_relative
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context["zulip_url"] = zulip_url
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context["html_settings_links"] = html_settings_links
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class ApiURLView(TemplateView):
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@override
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def get_context_data(self, **kwargs: Any) -> dict[str, str]:
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context = super().get_context_data(**kwargs)
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add_api_url_context(context, self.request)
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return context
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sidebar_headings = XPath("//*[self::h1 or self::h2 or self::h3 or self::h4]")
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sidebar_links = XPath("//a[@href=$url]")
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class MarkdownDirectoryView(ApiURLView):
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path_template = ""
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policies_view = False
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help_view = False
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api_doc_view = False
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def __init__(self, **kwargs: Any) -> None:
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super().__init__(**kwargs)
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self._post_render_callbacks: list[Callable[[HttpResponse], HttpResponse | None]] = []
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def add_post_render_callback(
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self, callback: Callable[[HttpResponse], HttpResponse | None]
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) -> None:
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self._post_render_callbacks.append(callback)
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def get_path(self, article: str) -> DocumentationArticle:
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http_status = 200
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if article == "":
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article = "index"
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elif article == "include/sidebar_index":
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pass
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elif article == "api-doc-template":
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# This markdown template shouldn't be accessed directly.
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article = "missing"
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http_status = 404
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elif "/" in article:
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article = "missing"
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http_status = 404
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elif len(article) > 100 or not re.match(r"^[0-9a-zA-Z_-]+$", article):
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article = "missing"
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http_status = 404
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path = self.path_template % (article,)
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endpoint_name = None
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endpoint_method = None
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if not self.path_template.startswith("/"):
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# Relative paths only used for policies documentation
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# when it is not configured or in the dev environment
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assert self.policies_view
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try:
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loader.get_template(path)
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return DocumentationArticle(
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article_path=path,
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article_http_status=http_status,
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endpoint_path=endpoint_name,
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endpoint_method=endpoint_method,
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)
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except loader.TemplateDoesNotExist:
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return DocumentationArticle(
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article_path=self.path_template % ("missing",),
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article_http_status=404,
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endpoint_path=None,
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endpoint_method=None,
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)
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if not os.path.exists(path):
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if self.api_doc_view:
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try:
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# API endpoints documented in zerver/openapi/zulip.yaml
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endpoint_name, endpoint_method = get_endpoint_from_operationid(article)
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path = self.path_template % ("api-doc-template",)
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except AssertionError:
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return DocumentationArticle(
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article_path=self.path_template % ("missing",),
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article_http_status=404,
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endpoint_path=None,
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endpoint_method=None,
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)
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elif self.help_view or self.policies_view:
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article = "missing"
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http_status = 404
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path = self.path_template % (article,)
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else:
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raise AssertionError("Invalid documentation view type")
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return DocumentationArticle(
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article_path=path,
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article_http_status=http_status,
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endpoint_path=endpoint_name,
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endpoint_method=endpoint_method,
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)
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@override
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def get_context_data(self, **kwargs: Any) -> dict[str, Any]:
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article = kwargs["article"]
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context: dict[str, Any] = super().get_context_data()
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documentation_article = self.get_path(article)
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context["article"] = documentation_article.article_path
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not_index_page = not context["article"].endswith("/index.md")
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if documentation_article.article_path.startswith("/") and os.path.exists(
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documentation_article.article_path
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):
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# Absolute path case
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article_absolute_path = documentation_article.article_path
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else:
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# Relative path case
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article_absolute_path = os.path.join(
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settings.DEPLOY_ROOT, "templates", documentation_article.article_path
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)
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if self.help_view:
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context["page_is_help_center"] = True
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context["doc_root"] = "/help/"
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context["doc_root_title"] = "Help center"
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sidebar_article = self.get_path("include/sidebar_index")
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sidebar_index = sidebar_article.article_path
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title_base = "Zulip help center"
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elif self.policies_view:
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context["page_is_policy_center"] = True
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context["doc_root"] = "/policies/"
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context["doc_root_title"] = "Terms and policies"
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sidebar_article = self.get_path("sidebar_index")
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if sidebar_article.article_http_status == 200:
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sidebar_index = sidebar_article.article_path
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else:
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sidebar_index = None
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title_base = "Zulip terms and policies"
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elif self.api_doc_view:
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context["page_is_api_center"] = True
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context["doc_root"] = "/api/"
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context["doc_root_title"] = "API documentation"
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sidebar_article = self.get_path("sidebar_index")
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sidebar_index = sidebar_article.article_path
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title_base = "Zulip API documentation"
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else:
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raise AssertionError("Invalid documentation view type")
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# The following is a somewhat hacky approach to extract titles from articles.
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endpoint_name = None
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endpoint_method = None
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if os.path.exists(article_absolute_path):
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with open(article_absolute_path) as article_file:
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first_line = article_file.readlines()[0]
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if self.api_doc_view and context["article"].endswith("api-doc-template.md"):
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endpoint_name, endpoint_method = (
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documentation_article.endpoint_path,
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documentation_article.endpoint_method,
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)
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assert endpoint_name is not None
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assert endpoint_method is not None
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article_title = get_openapi_summary(endpoint_name, endpoint_method)
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elif self.api_doc_view and "{generate_api_header(" in first_line:
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api_operation = context["PAGE_METADATA_URL"].split("/api/")[1]
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endpoint_name, endpoint_method = get_endpoint_from_operationid(api_operation)
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article_title = get_openapi_summary(endpoint_name, endpoint_method)
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else:
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# Strip the header and then use the first line to get the article title
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article_title = first_line.lstrip("#").strip()
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endpoint_name = endpoint_method = None
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if not_index_page:
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context["PAGE_TITLE"] = f"{article_title} | {title_base}"
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else:
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context["PAGE_TITLE"] = title_base
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placeholder_open_graph_description = (
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f"REPLACEMENT_PAGE_DESCRIPTION_{int(2**24 * random.random())}"
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)
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context["PAGE_DESCRIPTION"] = placeholder_open_graph_description
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def update_description(response: HttpResponse) -> None:
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if placeholder_open_graph_description.encode() in response.content:
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first_paragraph_text = get_content_description(
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response.content, context["PAGE_METADATA_URL"]
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)
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response.content = response.content.replace(
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placeholder_open_graph_description.encode(),
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first_paragraph_text.encode(),
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)
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self.add_post_render_callback(update_description)
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# An "article" might require the api_url_context to be rendered
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api_url_context: dict[str, Any] = {}
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add_api_url_context(api_url_context, self.request)
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api_url_context["run_content_validators"] = True
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context["api_url_context"] = api_url_context
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if endpoint_name and endpoint_method:
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context["api_url_context"]["API_ENDPOINT_NAME"] = endpoint_name + ":" + endpoint_method
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if sidebar_index is not None:
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sidebar_html = render_markdown_path(sidebar_index)
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else:
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sidebar_html = ""
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tree = html.fragment_fromstring(sidebar_html, create_parent=True)
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if not context.get("page_is_policy_center", False):
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home_h1 = Element("h1")
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home_link = SubElement(home_h1, "a")
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home_link.attrib["class"] = "no-underline"
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home_link.attrib["href"] = context["doc_root"]
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home_link.text = context["doc_root_title"] + " home"
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tree.insert(0, home_h1)
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url = context["doc_root"] + article
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# Remove ID attributes from sidebar headings so they don't conflict with index page headings
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headings = sidebar_headings(tree)
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assert isinstance(headings, list)
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for h in headings:
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assert isinstance(h, _Element)
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h.attrib.pop("id", "")
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# Highlight current article link
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links = sidebar_links(tree, url=url)
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assert isinstance(links, list)
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for a in links:
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assert isinstance(a, _Element)
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old_class = a.attrib.get("class", "")
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assert isinstance(old_class, str)
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a.attrib["class"] = old_class + " highlighted"
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context["sidebar_html"] = Markup().join(
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Markup(html.tostring(child, encoding="unicode")) for child in tree
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)
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add_google_analytics_context(context)
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return context
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@override
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def get(
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self, request: HttpRequest, *args: object, article: str = "", **kwargs: object
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) -> HttpResponse:
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# Hack: It's hard to reinitialize urls.py from tests, and so
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# we want to defer the use of settings.POLICIES_DIRECTORY to
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# runtime.
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if self.policies_view:
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self.path_template = f"{settings.POLICIES_DIRECTORY}/%s.md"
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documentation_article = self.get_path(article)
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http_status = documentation_article.article_http_status
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result = super().get(request, article=article)
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assert isinstance(result, TemplateResponse)
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for callback in self._post_render_callbacks:
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result.add_post_render_callback(callback)
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if http_status != 200:
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result.status_code = http_status
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return result
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def add_integrations_context(context: dict[str, Any]) -> None:
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alphabetical_sorted_categories = OrderedDict(sorted(CATEGORIES.items()))
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alphabetical_sorted_integration = OrderedDict(sorted(INTEGRATIONS.items()))
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enabled_integrations_count = sum(v.is_enabled() for v in INTEGRATIONS.values())
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# Subtract 1 so saying "Over X integrations" is correct. Then,
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# round down to the nearest multiple of 10.
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integrations_count_display = ((enabled_integrations_count - 1) // 10) * 10
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context["categories_dict"] = alphabetical_sorted_categories
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context["integrations_dict"] = alphabetical_sorted_integration
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context["integrations_count_display"] = integrations_count_display
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def add_integrations_open_graph_context(context: dict[str, Any], request: HttpRequest) -> None:
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path_name = request.path.rstrip("/").split("/")[-1]
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description = (
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"Zulip comes with over a hundred native integrations out of the box, "
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"and integrates with Zapier and IFTTT to provide hundreds more. "
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"Connect the apps you use every day to Zulip."
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)
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if path_name in INTEGRATIONS:
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integration = INTEGRATIONS[path_name]
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context["PAGE_TITLE"] = f"{integration.display_name} | Zulip integrations"
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context["PAGE_DESCRIPTION"] = description
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elif path_name in CATEGORIES:
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category = CATEGORIES[path_name]
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if path_name in META_CATEGORY:
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context["PAGE_TITLE"] = f"{category} | Zulip integrations"
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else:
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context["PAGE_TITLE"] = f"{category} tools | Zulip integrations"
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context["PAGE_DESCRIPTION"] = description
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elif path_name == "integrations":
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context["PAGE_TITLE"] = "Zulip integrations"
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context["PAGE_DESCRIPTION"] = description
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class IntegrationView(ApiURLView):
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template_name = "zerver/integrations/index.html"
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@override
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def get_context_data(self, **kwargs: Any) -> dict[str, Any]:
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context: dict[str, Any] = super().get_context_data(**kwargs)
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add_integrations_context(context)
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add_integrations_open_graph_context(context, self.request)
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add_google_analytics_context(context)
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return context
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@typed_endpoint
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def integration_doc(request: HttpRequest, *, integration_name: PathOnly[str]) -> HttpResponse:
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# FIXME: This check is jQuery-specific.
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if request.headers.get("x-requested-with") != "XMLHttpRequest":
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return HttpResponseNotFound()
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try:
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integration = INTEGRATIONS[integration_name]
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except KeyError:
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return HttpResponseNotFound()
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context: dict[str, Any] = {}
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add_api_url_context(context, request)
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context["integration_name"] = integration.name
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context["integration_display_name"] = integration.display_name
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if isinstance(integration, WebhookIntegration):
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assert integration.url.startswith("api/")
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context["integration_url"] = integration.url.removeprefix("api")
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all_event_types = get_all_event_types_for_integration(integration)
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if all_event_types is not None:
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context["all_event_types"] = all_event_types
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if isinstance(integration, HubotIntegration):
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context["hubot_docs_url"] = integration.hubot_docs_url
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if isinstance(integration, PythonAPIIntegration):
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context["config_file_path"] = (
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f"/usr/local/share/zulip/integrations/{integration.directory_name}/zulip_{integration.directory_name}_config.py"
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)
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context["integration_path"] = (
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f"/usr/local/share/zulip/integrations/{integration.directory_name}"
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)
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doc_html_str = render_markdown_path(integration.doc, context, integration_doc=True)
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return HttpResponse(doc_html_str)
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