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import datetime
import html
import re
from flask import redirect, request, url_for
from werkzeug.exceptions import BadRequest
from pysite.base_route import RouteView
from pysite.constants import BotEventTypes, CHANNEL_MOD_LOG, DEBUG_MODE, EDITOR_ROLES
from pysite.decorators import csrf, require_roles
from pysite.mixins import DBMixin, RMQMixin
from pysite.rst import render
STRIP_REGEX = re.compile(r"<[^<]+?>")
class EditView(RouteView, DBMixin, RMQMixin):
path = "/edit/<path:page>" # "path" means that it accepts slashes
name = "edit"
table_name = "wiki"
revision_table_name = "wiki_revisions"
@require_roles(*EDITOR_ROLES)
def get(self, page):
rst = ""
title = ""
preview = "<p>Preview will appear here.</p>"
obj = self.db.get(self.table_name, page)
if obj:
rst = obj.get("rst", "")
title = obj.get("title", "")
preview = obj.get("html", preview)
if obj.get("lock_expiry") and obj.get("lock_user") != self.user_data.get("user_id"):
lock_time = datetime.datetime.fromtimestamp(obj["lock_expiry"])
if datetime.datetime.utcnow() < lock_time:
return self.render("wiki/page_in_use.html", page=page, can_edit=True)
lock_expiry = datetime.datetime.utcnow() + datetime.timedelta(minutes=5)
# There are a couple of cases where we will not need to lock a page. One of these is if the application is
# current set to debug mode. The other of these cases is if the page is empty, because if the page is empty
# we will only have a partially filled out page if the user quits before saving.
if obj:
if not DEBUG_MODE and obj.get("rst"):
self.db.insert(
self.table_name,
{
"slug": page,
"lock_expiry": lock_expiry.timestamp(),
"lock_user": self.user_data.get("user_id")
},
conflict="update"
)
return self.render("wiki/page_edit.html", page=page, rst=rst, title=title, preview=preview, can_edit=True)
@require_roles(*EDITOR_ROLES)
@csrf
def post(self, page):
rst = request.form.get("rst")
title = request.form["title"]
if not rst or not rst.strip():
raise BadRequest()
if not title or not title.strip():
raise BadRequest()
rendered = render(rst)
obj = {
"slug": page,
"title": request.form["title"],
"rst": rst,
"html": rendered["html"],
"text": html.unescape(STRIP_REGEX.sub("", rendered["html"]).strip()),
"headers": rendered["headers"]
}
self.db.insert(
self.table_name,
obj,
conflict="replace"
)
if not DEBUG_MODE:
# Add the post to the revisions table
revision_payload = {
"slug": page,
"post": obj,
"date": datetime.datetime.utcnow().timestamp(),
"user": self.user_data.get("user_id")
}
del revision_payload["post"]["slug"]
current_revisions = self.db.filter(self.revision_table_name, lambda rev: rev["slug"] == page)
sorted_revisions = sorted(current_revisions, key=lambda rev: rev["date"], reverse=True)
if len(sorted_revisions) > 0:
old_rev = sorted_revisions[0]
else:
old_rev = None
new_rev = self.db.insert(self.revision_table_name, revision_payload)["generated_keys"][0]
self.audit_log(page, new_rev, old_rev, obj)
return redirect(url_for("wiki.page", page=page), code=303) # Redirect, ensuring a GET
@require_roles(*EDITOR_ROLES)
@csrf
def patch(self, page):
current = self.db.get(self.table_name, page)
if not current:
return "", 404
if current.get("lock_expiry"): # If there is a lock present
# If user patching is not the user with the lock end here
if current["lock_user"] != self.user_data.get("user_id"):
return "", 400
new_lock = datetime.datetime.utcnow() + datetime.timedelta(minutes=5) # New lock time, 5 minutes in future
self.db.insert(self.table_name, {
"slug": page,
"lock_expiry": new_lock.timestamp()
}, conflict="update") # Update with new lock time
return "", 204
def audit_log(self, page, new_id, old_data, new_data):
if not old_data:
link = f"https://wiki.pythondiscord.com/source/{page}"
else:
link = f"https://wiki.pythondiscord.com/history/compare/{old_data['id']}/{new_id}"
self.rmq_bot_event(
BotEventTypes.send_embed,
{
"target": CHANNEL_MOD_LOG,
"title": "Page Edit",
"description": f"**{new_data['title']}** edited by **{self.user_data.get('username')}**. "
f"[View the diff here]({link})",
"colour": 0x3F8DD7, # Light blue
"timestamp": datetime.datetime.now().isoformat()
}
)
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