import time

from sqlalchemy.sql.expression import not_, and_, or_

from files.classes.mod_logs import ModAction
from files.classes.sub_logs import SubAction
from files.helpers.config.const import *
from files.helpers.get import *
from files.routes.wrappers import *
from files.__main__ import app

@app.post("/clear")
@auth_required
@ratelimit_user()
def clear(v):
	notifs = g.db.query(Notification).join(Notification.comment).filter(Notification.read == False, Notification.user_id == v.id).all()
	for n in notifs:
		n.read = True
		g.db.add(n)
	v.last_viewed_post_notifs = int(time.time())
	v.last_viewed_log_notifs = int(time.time())
	g.db.add(v)
	return {"message": "Notifications marked as read!"}


@app.get("/unread")
@auth_required
@ratelimit_user()
def unread(v):
	listing = g.db.query(Notification, Comment).join(Notification.comment).filter(
		Notification.read == False,
		Notification.user_id == v.id,
		Comment.is_banned == False,
		Comment.deleted_utc == 0,
	).order_by(Notification.created_utc.desc()).all()

	for n, c in listing:
		n.read = True
		g.db.add(n)

	return {"data":[x[1].json(g.db) for x in listing]}


@app.get("/notifications/modmail")
@admin_level_required(PERMS['VIEW_MODMAIL'])
def notifications_modmail(v):
	try: page = max(int(request.values.get("page", 1)), 1)
	except: page = 1

	comments = g.db.query(Comment).filter(Comment.sentto==2).order_by(Comment.id.desc()).offset(PAGE_SIZE*(page-1)).limit(PAGE_SIZE+1).all()
	next_exists = (len(comments) > PAGE_SIZE)
	listing = comments[:PAGE_SIZE]

	g.db.commit()

	if v.client: return {"data":[x.json(g.db) for x in listing]}

	return render_template("notifications.html",
							v=v,
							notifications=listing,
							next_exists=next_exists,
							page=page,
							standalone=True,
							render_replies=True,
						)



@app.get("/notifications/messages")
@auth_required
def notifications_messages(v:User):
	try: page = max(int(request.values.get("page", 1)), 1)
	except: page = 1

	# All of these queries are horrible. For whomever comes here after me,
	# PLEASE just turn DMs into their own table and get them out of
	# Notifications & Comments. It's worth it. Save yourself.
	message_threads = g.db.query(Comment).filter(
		Comment.sentto != None,
		or_(Comment.author_id == v.id, Comment.sentto == v.id),
		Comment.parent_submission == None,
		Comment.level == 1,
	)
	if not v.shadowbanned and v.admin_level < PERMS['NOTIFICATIONS_FROM_SHADOWBANNED_USERS']:
		message_threads = message_threads.join(Comment.author) \
							.filter(User.shadowbanned == None)

	thread_order = g.db.query(Comment.top_comment_id, Comment.created_utc) \
		.distinct(Comment.top_comment_id) \
		.filter(
			Comment.sentto != None,
			or_(Comment.author_id == v.id, Comment.sentto == v.id),
		).order_by(
			Comment.top_comment_id.desc(),
			Comment.created_utc.desc()
		).subquery()

	message_threads = message_threads.join(thread_order,
						thread_order.c.top_comment_id == Comment.top_comment_id)
	message_threads = message_threads.order_by(thread_order.c.created_utc.desc()) \
						.offset(PAGE_SIZE*(page-1)).limit(PAGE_SIZE+1).all()

	# Clear notifications (used for unread indicator only) for all user messages.
	notifs_unread_row = g.db.query(Notification.comment_id).join(Comment).filter(
		Notification.user_id == v.id,
		Notification.read == False,
		or_(Comment.author_id == v.id, Comment.sentto == v.id),
	).all()

	notifs_unread = [n.comment_id for n in notifs_unread_row]
	g.db.query(Notification).filter(
			Notification.user_id == v.id,
			Notification.comment_id.in_(notifs_unread),
		).update({Notification.read: True})
	g.db.commit()

	next_exists = (len(message_threads) > 25)
	listing = message_threads[:25]

	list_to_perserve_unread_attribute = []
	comments_unread = g.db.query(Comment).filter(Comment.id.in_(notifs_unread))
	for c in comments_unread:
		c.unread = True
		list_to_perserve_unread_attribute.append(c)

	if v.client: return {"data":[x.json(g.db) for x in listing]}

	return render_template("notifications.html",
							v=v,
							notifications=listing,
							next_exists=next_exists,
							page=page,
							standalone=True,
							render_replies=True,
						)


@app.get("/notifications/posts")
@auth_required
def notifications_posts(v:User):
	try: page = max(int(request.values.get("page", 1)), 1)
	except: page = 1

	listing = [x[0] for x in g.db.query(Submission.id).filter(
		or_(
			Submission.author_id.in_(v.followed_users),
			Submission.sub.in_(v.followed_subs)
		),
		Submission.deleted_utc == 0,
		Submission.is_banned == False,
		Submission.private == False,
		Submission.notify == True,
		Submission.author_id != v.id,
		Submission.ghost == False,
		Submission.author_id.notin_(v.userblocks)
	).order_by(Submission.created_utc.desc()).offset(PAGE_SIZE * (page - 1)).limit(PAGE_SIZE+1).all()]

	next_exists = (len(listing) > 25)
	listing = listing[:25]
	listing = get_posts(listing, v=v, eager=True)

	for p in listing:
		p.unread = p.created_utc > v.last_viewed_post_notifs

	v.last_viewed_post_notifs = int(time.time())
	g.db.add(v)

	if v.client: return {"data":[x.json(g.db) for x in listing]}

	return render_template("notifications.html",
							v=v,
							notifications=listing,
							next_exists=next_exists,
							page=page,
							standalone=True,
							render_replies=True,
						)


@app.get("/notifications/modactions")
@auth_required
def notifications_modactions(v:User):
	try: page = max(int(request.values.get("page", 1)), 1)
	except: page = 1

	if v.admin_level >= PERMS['NOTIFICATIONS_MODERATOR_ACTIONS']:
		cls = ModAction
	elif v.moderated_subs:
		cls = SubAction
	else:
		abort(403)

	listing = g.db.query(cls).filter(cls.user_id != v.id)

	if cls == SubAction:
		listing = listing.filter(cls.sub.in_(v.moderated_subs))

	listing = listing.order_by(cls.id.desc()).offset(PAGE_SIZE*(page-1)).limit(PAGE_SIZE+1).all()
	next_exists = len(listing) > PAGE_SIZE
	listing = listing[:PAGE_SIZE]

	for ma in listing:
		ma.unread = ma.created_utc > v.last_viewed_log_notifs

	v.last_viewed_log_notifs = int(time.time())
	g.db.add(v)

	return render_template("notifications.html",
							v=v,
							notifications=listing,
							next_exists=next_exists,
							page=page,
							standalone=True,
							render_replies=True,
						)



@app.get("/notifications/reddit")
@auth_required
def notifications_reddit(v:User):
	try: page = max(int(request.values.get("page", 1)), 1)
	except: page = 1

	if not v.can_view_offsitementions: abort(403)

	listing = g.db.query(Comment).filter(
		Comment.body_html.like('%<p>New site mention%<a href="https://old.reddit.com/r/%'),
		Comment.parent_submission == None,
		Comment.author_id == AUTOJANNY_ID
	).order_by(Comment.created_utc.desc()).offset(PAGE_SIZE*(page-1)).limit(PAGE_SIZE+1).all()

	next_exists = len(listing) > PAGE_SIZE
	listing = listing[:PAGE_SIZE]

	for ma in listing:
		ma.unread = ma.created_utc > v.last_viewed_reddit_notifs

	v.last_viewed_reddit_notifs = int(time.time())
	g.db.add(v)

	if v.client: return {"data":[x.json(g.db) for x in listing]}

	return render_template("notifications.html",
							v=v,
							notifications=listing,
							next_exists=next_exists,
							page=page,
							standalone=True,
							render_replies=True,
						)




@app.get("/notifications")
@auth_required
def notifications(v:User):
	try: page = max(int(request.values.get("page", 1)), 1)
	except: page = 1

	comments = g.db.query(Comment, Notification).join(Notification.comment).join(Comment.author).filter(
		Notification.user_id == v.id,
		Comment.is_banned == False,
		Comment.deleted_utc == 0,
		or_(Comment.sentto == None, Comment.sentto == MODMAIL_ID),
		not_(and_(Comment.sentto != None, Comment.sentto == MODMAIL_ID, User.is_muted)),
	)

	if v.admin_level < PERMS['USER_SHADOWBAN']:
		comments = comments.filter(User.shadowbanned == None)

	comments = comments.order_by(Notification.created_utc.desc())
	comments = comments.offset(PAGE_SIZE * (page - 1)).limit(PAGE_SIZE+1).all()

	next_exists = (len(comments) > PAGE_SIZE)
	comments = comments[:PAGE_SIZE]
	cids = [x[0].id for x in comments]
	comms = get_comments(cids, v=v)

	listing = []
	for c, n in comments:
		if n.created_utc > 1620391248: c.notif_utc = n.created_utc
		if not n.read:
			n.read = True
			c.unread = True
			g.db.add(n)

		if c.parent_submission:
			if c.replies2 == None:
				c.replies2 = g.db.query(Comment).filter_by(parent_comment_id=c.id).filter(or_(Comment.author_id == v.id, Comment.id.in_(cids))).order_by(Comment.id.desc()).all()
				for x in c.replies2:
					if x.replies2 == None: x.replies2 = []
			count = 0
			while count < 50 and c.parent_comment and (c.parent_comment.author_id == v.id or c.parent_comment.id in cids):
				count += 1
				c = c.parent_comment
				if c.replies2 == None:
					c.replies2 = g.db.query(Comment).filter_by(parent_comment_id=c.id).filter(or_(Comment.author_id == v.id, Comment.id.in_(cids))).order_by(Comment.id.desc()).all()
					for x in c.replies2:
						if x.replies2 == None:
							x.replies2 = g.db.query(Comment).filter_by(parent_comment_id=x.id).filter(or_(Comment.author_id == v.id, Comment.id.in_(cids))).order_by(Comment.id.desc()).all()
		else:
			while c.parent_comment:
				c = c.parent_comment
			c.replies2 = g.db.query(Comment).filter_by(parent_comment_id=c.id).order_by(Comment.id).all()

		if c not in listing: listing.append(c)

	g.db.commit()

	if v.client: return {"data":[x.json(g.db) for x in listing]}

	return render_template("notifications.html",
							v=v,
							notifications=listing,
							next_exists=next_exists,
							page=page,
							standalone=True,
							render_replies=True,
						)