import os
import time
import html
from io import BytesIO
from os import path
from shutil import copyfile
from sys import stdout
from urllib.parse import ParseResult, urlparse, urlunparse, unquote

import gevent
import requests
from PIL import Image

from files.__main__ import app, cache, limiter
from files.classes import *
from files.helpers.actions import *
from files.helpers.alerts import *
from files.helpers.config.const import *
from files.helpers.get import *
from files.helpers.regex import *
from files.helpers.sanitize import *
from files.helpers.settings import get_setting
from files.helpers.slots import *
from files.helpers.sorting_and_time import *
from files.routes.routehelpers import execute_shadowban_viewers_and_voters
from files.routes.wrappers import *

from .front import frontlist
from .users import userpagelisting

from files.__main__ import app, limiter, redis_instance

def _add_post_view(pid):
	db = db_session()

	p = db.get(Post, pid)
	p.views += 1
	db.add(p)

	db.commit()
	db.close()
	stdout.flush()

@app.post("/publish/<int:pid>")
@limiter.limit('1/second', scope=rpath)
@limiter.limit('1/second', scope=rpath, key_func=get_ID)
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400)
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400, key_func=get_ID)
@is_not_banned
def publish(pid, v):
	p = get_post(pid)
	if not p.private: return {"message": "Post published!"}

	if p.author_id != v.id: abort(403)
	p.private = False
	p.created_utc = int(time.time())
	g.db.add(p)

	notify_users = NOTIFY_USERS(f'{p.title} {p.body}', v, ghost=p.ghost, log_cost=p)

	if notify_users:
		cid, text = notif_comment2(p)
		if notify_users == 'everyone':
			alert_everyone(cid)
		else:
			for x in notify_users:
				add_notif(cid, x, text, pushnotif_url=p.permalink)


	cache.delete_memoized(frontlist)
	cache.delete_memoized(userpagelisting)

	execute_snappy(p, v)

	return {"message": "Post has been published successfully!"}

@app.get("/submit")
@app.get("/h/<sub>/submit")
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400)
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400, key_func=get_ID)
@auth_required
def submit_get(v:User, sub=None):
	sub = get_sub_by_name(sub, graceful=True)
	if request.path.startswith('/h/') and not sub: abort(404)

	SUBS = [x[0] for x in g.db.query(Sub.name).order_by(Sub.name).all()]

	return render_template("submit.html", SUBS=SUBS, v=v, sub=sub)

@app.get("/post/<int:pid>")
@app.get("/post/<int:pid>/<anything>")
@app.get("/h/<sub>/post/<int:pid>")
@app.get("/h/<sub>/post/<int:pid>/<anything>")
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400)
@auth_desired_with_logingate
def post_id(pid, v, anything=None, sub=None):
	p = get_post(pid, v=v)
	if not User.can_see(v, p): abort(403)

	if p.over_18 and not (v and v.over_18) and session.get('over_18_cookies', 0) < int(time.time()):
		if g.is_api_or_xhr: abort(451, "Must be 18+ to view")
		return render_template("errors/nsfw.html", v=v)

	gevent.spawn(_add_post_view, pid)

	if p.new: defaultsortingcomments = 'new'
	elif v: defaultsortingcomments = v.defaultsortingcomments
	else: defaultsortingcomments = "hot"
	sort = request.values.get("sort", defaultsortingcomments)

	if sort == 'saves':
		sort = defaultsortingcomments

	if not v:
		result = cache.get(f'post_{p.id}_{sort}')
		if result:
			calc_users()
			return result

	if v:
		execute_shadowban_viewers_and_voters(v, p)
		# shadowban check is done in sort_objects
		# output is needed: see comments.py
		comments, output = get_comments_v_properties(v, None, Comment.parent_post == p.id, Comment.level < 10)

		if sort == "hot":
			pinned = [c[0] for c in comments.filter(Comment.stickied != None).order_by(Comment.created_utc.desc()).all()]
			comments = comments.filter(Comment.stickied == None)

		comments = comments.filter(Comment.level == 1)
		comments = sort_objects(sort, comments, Comment)
		comments = [c[0] for c in comments.all()]
	else:
		comments = g.db.query(Comment).filter(Comment.parent_post == p.id)

		if sort == "hot":
			pinned = comments.filter(Comment.stickied != None).order_by(Comment.created_utc.desc()).all()
			comments = comments.filter(Comment.stickied == None)

		comments = comments.filter(Comment.level == 1)
		comments = sort_objects(sort, comments, Comment)
		comments = comments.all()

	offset = 0
	ids = set()

	threshold = 100

	if p.comment_count > threshold+25 and not (v and v.client):
		comments2 = []
		count = 0
		if p.created_utc > 1638672040: # TODO: migrate old comments to use top_comment_id
			for comment in comments:
				comments2.append(comment)
				ids.add(comment.id)
				count += g.db.query(Comment).filter_by(parent_post=p.id, top_comment_id=comment.id).count() + 1
				if count > threshold: break
		else:
			for comment in comments:
				comments2.append(comment)
				ids.add(comment.id)
				count += g.db.query(Comment).filter_by(parent_post=p.id, parent_comment_id=comment.id).count() + 1
				if count > 20: break

		if len(comments) == len(comments2): offset = 0
		else: offset = 1
		comments = comments2

	p.replies = comments

	if sort == "hot":
		pinned2 = {}
		for pin in pinned:
			if pin.level > 1:
				pinned2[pin.top_comment] = ''
				if pin.top_comment in comments:
					comments.remove(pin.top_comment)
			else:
				pinned2[pin] = ''

		p.replies = list(pinned2.keys()) + p.replies

	if v and v.client:
		return p.json

	template = "post.html"
	if (p.is_banned or p.author.shadowbanned) \
			and not (v and (v.admin_level >= PERMS['POST_COMMENT_MODERATION'] or p.author_id == v.id)):
		template = "post_banned.html"

	result = render_template(template, v=v, p=p, ids=list(ids),
		sort=sort, render_replies=True, offset=offset, sub=p.subr,
		fart=get_setting('fart_mode'))

	if not v:
		cache.set(f'post_{p.id}_{sort}', result, timeout=3600)

	return result

@app.get("/view_more/<int:pid>/<sort>/<offset>")
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400)
@auth_desired_with_logingate
def view_more(v, pid, sort, offset):
	p = get_post(pid, v=v)
	try:
		offset = int(offset)
	except: abort(400)
	try: ids = set(int(x) for x in request.values.get("ids").split(','))
	except: abort(400)

	if v:
		# shadowban check is done in sort_objects
		# output is needed: see comments.py
		comments, output = get_comments_v_properties(v, None, Comment.parent_post == pid, Comment.stickied == None, Comment.id.notin_(ids), Comment.level < 10)
		comments = comments.filter(Comment.level == 1)
		comments = sort_objects(sort, comments, Comment)

		comments = [c[0] for c in comments.all()]
	else:
		comments = g.db.query(Comment).filter(
				Comment.parent_post == pid,
				Comment.level == 1,
				Comment.stickied == None,
				Comment.id.notin_(ids)
			)

		comments = sort_objects(sort, comments, Comment)

		comments = comments.offset(offset).all()

	comments2 = []
	count = 0
	if p.created_utc > 1638672040: # TODO: migrate old comments to use top_comment_id
		for comment in comments:
			comments2.append(comment)
			ids.add(comment.id)
			count += g.db.query(Comment).filter_by(parent_post=p.id, top_comment_id=comment.id).count() + 1
			if count > 100: break
	else:
		for comment in comments:
			comments2.append(comment)
			ids.add(comment.id)
			count += g.db.query(Comment).filter_by(parent_post=p.id, parent_comment_id=comment.id).count() + 1
			if count > 20: break

	if len(comments) == len(comments2): offset = 0
	else: offset += 1
	comments = comments2

	return render_template("comments.html", v=v, comments=comments, p=p, ids=list(ids), render_replies=True, pid=pid, sort=sort, offset=offset)


@app.get("/more_comments/<int:cid>")
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400)
@auth_desired_with_logingate
def more_comments(v, cid):
	try: cid = int(cid)
	except: abort(404)

	tcid = g.db.query(Comment.top_comment_id).filter_by(id=cid).one_or_none()[0]

	if v:
		# shadowban check is done in sort_objects i think
		# output is needed: see comments.py
		comments, output = get_comments_v_properties(v, None, Comment.top_comment_id == tcid, Comment.level > 9)
		comments = comments.filter(Comment.parent_comment_id == cid)
		comments = [c[0] for c in comments.all()]
	else:
		c = get_comment(cid)
		comments = c.replies(sort=request.values.get('sort'))

	if comments: p = comments[0].post
	else: p = None

	return render_template("comments.html", v=v, comments=comments, p=p, render_replies=True)

def thumbnail_thread(pid:int, vid:int):
	db = db_session()
	def expand_url(post_url, fragment_url):
		if fragment_url.startswith("https://"):
			return fragment_url
		elif fragment_url.startswith("https://"):
			return f"https://{fragment_url.split('https://')[1]}"
		elif fragment_url.startswith('//'):
			return f"https:{fragment_url}"
		elif fragment_url.startswith('/') and '\\' not in fragment_url:
			parsed_url = urlparse(post_url)
			return f"https://{parsed_url.netloc}{fragment_url}"
		else:
			return f"{post_url}/{fragment_url}"

	p = db.get(Post, pid)

	if not p or not p.url:
		time.sleep(5)
		p = db.get(Post, pid)

	if not p or not p.url: return

	fetch_url = p.url

	if fetch_url.startswith('/') and '\\' not in fetch_url:
		fetch_url = f"{SITE_FULL}{fetch_url}"

	try:
		x=requests.get(fetch_url, headers=HEADERS, timeout=5, proxies=proxies)
	except:
		db.close()
		return

	if x.status_code != 200:
		db.close()
		return

	if x.headers.get("Content-Type","").startswith("text/html"):
		soup=BeautifulSoup(x.content, 'lxml')

		thumb_candidate_urls=[]

		meta_tags = [
			"drama:thumbnail",
			"twitter:image",
			"og:image",
			"thumbnail"
			]

		for tag_name in meta_tags:


			tag = soup.find(
				'meta',
				attrs={
					"name": tag_name,
					"content": True
					}
				)
			if not tag:
				tag = soup.find(
					'meta',
					attrs={
						'property': tag_name,
						'content': True
						}
					)
			if tag:
				thumb_candidate_urls.append(expand_url(p.url, tag['content']))

		for tag in soup.find_all("img", attrs={'src':True}):
			thumb_candidate_urls.append(expand_url(p.url, tag['src']))


		for url in thumb_candidate_urls:
			try:
				image_req=requests.get(url, headers=HEADERS, timeout=5, proxies=proxies)
			except:
				continue

			if image_req.status_code >= 400:
				continue

			if not image_req.headers.get("Content-Type","").startswith("image/"):
				continue

			if image_req.headers.get("Content-Type","").startswith("image/svg"):
				continue

			with Image.open(BytesIO(image_req.content)) as i:
				if i.width < 30 or i.height < 30:
					continue
			break
		else:
			db.close()
			return

	elif x.headers.get("Content-Type","").startswith("image/"):
		image_req=x
		with Image.open(BytesIO(x.content)) as i:
			size = len(i.fp.read())
			if size > 8 * 1024 * 1024:
				db.close()
				return

	else:
		db.close()
		return

	name = f'/images/{time.time()}'.replace('.','') + '.webp'

	with open(name, "wb") as file:
		for chunk in image_req.iter_content(1024):
			file.write(chunk)

	v = db.get(User, vid)
	url = process_image(name, v, resize=99, uploader_id=p.author_id, db=db)
	if url:
		p.thumburl = url
		db.add(p)
		db.commit()
	db.close()
	stdout.flush()


@app.post("/is_repost")
@limiter.limit('1/second', scope=rpath)
@limiter.limit('1/second', scope=rpath, key_func=get_ID)
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400)
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400, key_func=get_ID)
@auth_required
def is_repost(v):
	not_a_repost = {'permalink': ''}
	if not FEATURES['REPOST_DETECTION']:
		return not_a_repost

	url = request.values.get('url')
	if not url or len(url) < MIN_REPOST_CHECK_URL_LENGTH:
		abort(400)

	url = normalize_url(url)
	url = unquote(url)
	parsed_url = urlparse(url)

	domain = parsed_url.netloc
	if domain in {'old.reddit.com','twitter.com','instagram.com','tiktok.com'} and '/search' not in url:
		new_url = ParseResult(scheme="https",
				netloc=parsed_url.netloc,
				path=parsed_url.path,
				params=parsed_url.params,
				query=None,
				fragment=parsed_url.fragment)
	else:
		qd = parse_qs(parsed_url.query, keep_blank_values=True)
		filtered = {k: val for k, val in qd.items() if not k.startswith('utm_') and not k.startswith('ref_')}

		new_url = ParseResult(scheme="https",
							netloc=parsed_url.netloc,
							path=parsed_url.path,
							params=parsed_url.params,
							query=urlencode(filtered, doseq=True),
							fragment=parsed_url.fragment)

	url = urlunparse(new_url)
	url = url.rstrip('/')

	search_url = url.replace('%', '').replace('\\', '').replace('_', '\_').strip()
	repost = g.db.query(Post).filter(
		Post.url.ilike(search_url),
		Post.deleted_utc == 0,
		Post.is_banned == False
	).first()
	if repost: return {'permalink': repost.permalink}
	else: return not_a_repost

@app.post("/submit")
@app.post("/h/<sub>/submit")
@limiter.limit('1/second', scope=rpath)
@limiter.limit('1/second', scope=rpath, key_func=get_ID)
@limiter.limit(POST_RATELIMIT, deduct_when=lambda response: response.status_code < 400)
@limiter.limit(POST_RATELIMIT, deduct_when=lambda response: response.status_code < 400, key_func=get_ID)
@is_not_banned
def submit_post(v:User, sub=None):
	url = request.values.get("url", "").strip()

	if '\\' in url: abort(400)

	title = sanitize_raw_title(request.values.get("title", ""))
	body = sanitize_raw_body(request.values.get("body", ""), True)

	if not title:
		abort(400, "Please enter a better title!")

	sub = request.values.get("sub", "").lower().replace('/h/','').strip()

	if SITE == 'rdrama.net' and (v.chud == 1 or v.id == 253):
		sub = 'chudrama'

	title_html = filter_emojis_only(title, graceful=True, count_emojis=True)

	if v.marseyawarded and not marseyaward_title_regex.fullmatch(title_html):
		abort(400, "You can only type marseys!")
	if len(title_html) > POST_TITLE_HTML_LENGTH_LIMIT:
		abort(400, "Rendered title is too big!")

	if sub == 'changelog':
		abort(400, "/h/changelog is archived")

	if sub in {'furry','vampire','racist','femboy','edgy'} and not v.client and not v.house.lower().startswith(sub):
		abort(400, f"You need to be a member of House {sub.capitalize()} to post in /h/{sub}")

	if sub and sub != 'none':
		sname = sub.strip().lower()
		sub = g.db.query(Sub.name).filter_by(name=sname).one_or_none()
		if not sub: abort(400, f"/h/{sname} not found!")
		sub = sub[0]
		if v.exiled_from(sub): abort(400, f"You're exiled from /h/{sub}")
	else: sub = None

	if not sub and HOLE_REQUIRED:
		abort(400, f"You must choose a {HOLE_NAME} for your post!")

	if v.longpost and (len(body) < 280 or ' [](' in body or body.startswith('[](')):
		abort(400, "You have to type more than 280 characters!")
	elif v.bird and len(body) > 140:
		abort(400, "You have to type less than 140 characters!")


	embed = None

	if url:
		url = normalize_url(url)
		url = unquote(url)
		parsed_url = urlparse(url)

		domain = parsed_url.netloc
		if domain in {'old.reddit.com','twitter.com','instagram.com','tiktok.com'} and '/search' not in url:
			new_url = ParseResult(scheme="https",
					netloc=parsed_url.netloc,
					path=parsed_url.path,
					params=parsed_url.params,
					query=None,
					fragment=parsed_url.fragment)
		else:
			qd = parse_qs(parsed_url.query, keep_blank_values=True)
			filtered = {k: val for k, val in qd.items() if not k.startswith('utm_') and not k.startswith('ref_')}

			new_url = ParseResult(scheme="https",
								netloc=parsed_url.netloc,
								path=parsed_url.path,
								params=parsed_url.params,
								query=urlencode(filtered, doseq=True),
								fragment=parsed_url.fragment)

		url = urlunparse(new_url)

		url = url.rstrip('/')

		if v.admin_level < PERMS["IGNORE_DOMAIN_BAN"]:
			y = tldextract.extract(url).registered_domain + parsed_url.path
			y = y.lower()
			banned_domains = g.db.query(BannedDomain).all()
			for x in banned_domains:
				if y.startswith(x.domain):
					abort(400, f'Remove the banned link "{x.domain}" and try again!\nReason for link ban: "{x.reason}"')

		if "twitter.com" == domain:
			try:
				embed = requests.get("https://publish.twitter.com/oembed", params={"url":url, "omit_script":"t"}, timeout=5).json()["html"]
				embed = embed.replace('<a href', '<a rel="nofollow noopener" href')
			except: pass
		elif url.startswith('https://youtube.com/watch?'):
			embed = handle_youtube_links(url)
		elif SITE in domain and "/post/" in url and "context" not in url and url.count('/') < 6:
			id = url.split("/post/")[1]
			if "/" in id: id = id.split("/")[0]
			embed = str(int(id))


	if not url and not body and not request.files.get("file") and not request.files.get("file-url"):
		abort(400, "Please enter a url or some text!")

	if not IS_LOCALHOST:
		dup = g.db.query(Post).filter(
			Post.author_id == v.id,
			Post.deleted_utc == 0,
			Post.title == title,
			Post.url == url,
			Post.body == body
		).one_or_none()
		if dup:
			return {"post_id": dup.id, "success": False}

	if not execute_antispam_post_check(title, v, url):
		return redirect("/notifications")

	if len(url) > 2048:
		abort(400, "There's a 2048 character limit for URLs!")

	body = process_files(request.files, v, body)
	body = body.strip()[:POST_BODY_LENGTH_LIMIT(v)] # process_files() adds content to the body, so we need to re-strip

	body_html = sanitize(body, count_emojis=True, limit_pings=100)

	if v.marseyawarded and marseyaward_body_regex.search(body_html):
		abort(400, "You can only type marseys!")

	if len(body_html) > POST_BODY_HTML_LENGTH_LIMIT:
		abort(400, "Post body_html too long!")

	flag_notify = (request.values.get("notify", "on") == "on")
	flag_new = request.values.get("new", False, bool) or 'megathread' in title.lower()
	flag_over_18 = FEATURES['NSFW_MARKING'] and request.values.get("over_18", False, bool)
	flag_private = request.values.get("private", False, bool)
	flag_ghost = request.values.get("ghost", False, bool) and v.can_post_in_ghost_threads

	if flag_ghost: sub = None

	if embed and len(embed) > 1500: embed = None
	if embed: embed = embed.strip()

	if url and url.startswith(f'{SITE_FULL}/'):
		url = url.split(SITE_FULL)[1]

	if url == '': url = None

	flag_chudded = v.chud and sub != 'chudrama'

	p = Post(
		private=flag_private,
		notify=flag_notify,
		author_id=v.id,
		over_18=flag_over_18,
		new=flag_new,
		app_id=v.client.application.id if v.client else None,
		is_bot=(v.client is not None),
		url=url,
		body=body,
		body_html=body_html,
		embed=embed,
		title=title,
		title_html=title_html,
		sub=sub,
		ghost=flag_ghost,
		chudded=flag_chudded,
	)

	g.db.add(p)
	g.db.flush()

	execute_under_siege(v, p, p.body, 'post')

	process_poll_options(v, p)

	for text in {p.body, p.title, p.url}:
		if execute_blackjack(v, p, text, 'post'): break

	vote = Vote(user_id=v.id,
				vote_type=1,
				post_id=p.id,
				coins=0
				)
	g.db.add(vote)

	if request.files.get('file-url') and not g.is_tor:
		file = request.files['file-url']

		if file.content_type.startswith('image/'):
			name = f'/images/{time.time()}'.replace('.','') + '.webp'
			file.save(name)
			p.url = process_image(name, v)

			name2 = name.replace('.webp', 'r.webp')
			copyfile(name, name2)
			p.thumburl = process_image(name2, v, resize=99)
		elif file.content_type.startswith('video/'):
			p.url = process_video(file, v)
			name = f'/images/{time.time()}'.replace('.','') + '.webp'
			try:
				subprocess.run(['ffmpeg', '-y', '-loglevel', 'warning',
					'-i', p.url, '-vf', "scale='iw':-2",
					'-q:v', '3', '-frames:v', '1', name], check=True, timeout=SUBPROCESS_TIMEOUT_DURATION)
			except:
				if os.path.isfile(name):
					os.remove(name)
			else:
				p.posterurl = name
				name2 = name.replace('.webp', 'r.webp')
				copyfile(name, name2)
				p.thumburl = process_image(name2, v, resize=99)
		elif file.content_type.startswith('audio/'):
			p.url = process_audio(file, v)
		else:
			abort(415)

	if not p.thumburl and p.url and p.domain != SITE:
		gevent.spawn(thumbnail_thread, p.id, v.id)

	if not p.private:
		notify_users = NOTIFY_USERS(f'{title} {body}', v, ghost=p.ghost, log_cost=p)

		if notify_users:
			cid, text = notif_comment2(p)
			if notify_users == 'everyone':
				alert_everyone(cid)
			else:
				for x in notify_users:
					add_notif(cid, x, text, pushnotif_url=p.permalink)

	if not complies_with_chud(p):
		p.is_banned = True
		p.ban_reason = "AutoJanny"

		body = CHUD_MSG.format(username=v.username, type='post', CHUD_PHRASE=v.chud_phrase)
		body_jannied_html = sanitize(body)


		c_jannied = Comment(author_id=AUTOJANNY_ID,
			parent_post=p.id,
			level=1,
			over_18=False,
			is_bot=True,
			app_id=None,
			distinguish_level=6,
			body=body,
			body_html=body_jannied_html,
			ghost=p.ghost
		)

		g.db.add(c_jannied)
		g.db.flush()

		p.comment_count += 1
		g.db.add(p)

		c_jannied.top_comment_id = c_jannied.id

		n = Notification(comment_id=c_jannied.id, user_id=v.id)
		g.db.add(n)

		autojanny = g.db.get(User, AUTOJANNY_ID)
		autojanny.comment_count += 1
		g.db.add(autojanny)

	v.post_count = g.db.query(Post).filter_by(author_id=v.id, deleted_utc=0).count()
	g.db.add(v)

	execute_lawlz_actions(v, p)

	if (SITE == 'rdrama.net'
			and v.id in {TGTW_ID, SNALLY_ID}
			and not (p.sub and p.subr.stealth)) and p.sub != 'slavshit' and not p.ghost:
		p.stickied_utc = int(time.time()) + 28800
		p.stickied = "AutoJanny"

	if SITE == 'rdrama.net' and v.id == 7465 and "women's world cup" in p.title.lower():
		p.stickied_utc = int(time.time()) + 28800
		p.stickied = "AutoJanny"

	cache.delete_memoized(frontlist)
	cache.delete_memoized(userpagelisting)

	key_pattern = app.config["CACHE_KEY_PREFIX"] + 'frontpage_*'
	for key in redis_instance.scan_iter(key_pattern):
		redis_instance.delete(key)

	if not p.private:
		execute_snappy(p, v)

	g.db.flush() #Necessary, do NOT remove

	if v.client: return p.json
	else:
		p.voted = 1
		return {"post_id": p.id, "success": True}

@app.post("/delete_post/<int:pid>")
@limiter.limit('1/second', scope=rpath)
@limiter.limit('1/second', scope=rpath, key_func=get_ID)
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400)
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400, key_func=get_ID)
@auth_required
def delete_post_pid(pid, v):
	p = get_post(pid)
	if p.author_id != v.id: abort(403)

	# Temporary special logic by Carp request for events of 2022-10-10
	if SITE_NAME == 'rDrama' and p.author_id == 3161: abort(403)

	if not p.deleted_utc:
		p.deleted_utc = int(time.time())
		p.is_pinned = False
		p.stickied = None

		g.db.add(p)

		cache.delete_memoized(frontlist)
		cache.delete_memoized(userpagelisting)

		v.post_count = g.db.query(Post).filter_by(author_id=v.id, deleted_utc=0).count()
		g.db.add(v)

	return {"message": "Post deleted!"}

@app.post("/undelete_post/<int:pid>")
@limiter.limit('1/second', scope=rpath)
@limiter.limit('1/second', scope=rpath, key_func=get_ID)
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400)
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400, key_func=get_ID)
@auth_required
def undelete_post_pid(pid, v):
	p = get_post(pid)
	if p.author_id != v.id: abort(403)

	if p.deleted_utc:
		p.deleted_utc = 0
		g.db.add(p)

		cache.delete_memoized(frontlist)
		cache.delete_memoized(userpagelisting)

		v.post_count = g.db.query(Post).filter_by(author_id=v.id, deleted_utc=0).count()
		g.db.add(v)

	return {"message": "Post undeleted!"}


@app.post("/mark_post_nsfw/<int:pid>")
@feature_required('NSFW_MARKING')
@limiter.limit('1/second', scope=rpath)
@limiter.limit('1/second', scope=rpath, key_func=get_ID)
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400)
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400, key_func=get_ID)
@auth_required
def mark_post_nsfw(pid, v):
	p = get_post(pid)

	if p.author_id != v.id and not v.admin_level >= PERMS['POST_COMMENT_MODERATION'] and not (p.sub and v.mods(p.sub)):
		abort(403)

	if p.over_18 and v.is_permabanned:
		abort(403)

	p.over_18 = True
	g.db.add(p)

	if p.author_id != v.id:
		if v.admin_level >= PERMS['POST_COMMENT_MODERATION']:
			ma = ModAction(
					kind = "set_nsfw",
					user_id = v.id,
					target_post_id = p.id,
				)
			g.db.add(ma)
		else:
			ma = SubAction(
					sub = p.sub,
					kind = "set_nsfw",
					user_id = v.id,
					target_post_id = p.id,
				)
			g.db.add(ma)
		send_repeatable_notification(p.author_id, f"@{v.username} (a site admin) has marked [{p.title}](/post/{p.id}) as +18")

	return {"message": "Post has been marked as +18!"}

@app.post("/unmark_post_nsfw/<int:pid>")
@feature_required('NSFW_MARKING')
@limiter.limit('1/second', scope=rpath)
@limiter.limit('1/second', scope=rpath, key_func=get_ID)
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400)
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400, key_func=get_ID)
@auth_required
def unmark_post_nsfw(pid, v):
	p = get_post(pid)

	if p.author_id != v.id and not v.admin_level >= PERMS['POST_COMMENT_MODERATION'] and not (p.sub and v.mods(p.sub)):
		abort(403)

	if p.over_18 and v.is_permabanned:
		abort(403)

	p.over_18 = False
	g.db.add(p)

	if p.author_id != v.id:
		if v.admin_level >= PERMS['POST_COMMENT_MODERATION']:
			ma = ModAction(
					kind = "unset_nsfw",
					user_id = v.id,
					target_post_id = p.id,
				)
			g.db.add(ma)
		else:
			ma = SubAction(
					sub = p.sub,
					kind = "unset_nsfw",
					user_id = v.id,
					target_post_id = p.id,
				)
			g.db.add(ma)
		send_repeatable_notification(p.author_id, f"@{v.username} (a site admin) has unmarked [{p.title}](/post/{p.id}) as +18")

	return {"message": "Post has been unmarked as +18!"}

@app.post("/save_post/<int:pid>")
@limiter.limit('1/second', scope=rpath)
@limiter.limit('1/second', scope=rpath, key_func=get_ID)
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400)
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400, key_func=get_ID)
@auth_required
def save_post(pid, v):

	p = get_post(pid)

	save = g.db.query(SaveRelationship).filter_by(user_id=v.id, post_id=p.id).one_or_none()

	if not save:
		new_save=SaveRelationship(user_id=v.id, post_id=p.id)
		g.db.add(new_save)
		cache.delete_memoized(userpagelisting)

	return {"message": "Post saved!"}

@app.post("/unsave_post/<int:pid>")
@limiter.limit('1/second', scope=rpath)
@limiter.limit('1/second', scope=rpath, key_func=get_ID)
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400)
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400, key_func=get_ID)
@auth_required
def unsave_post(pid, v):

	p = get_post(pid)

	save = g.db.query(SaveRelationship).filter_by(user_id=v.id, post_id=p.id).one_or_none()

	if save:
		g.db.delete(save)
		cache.delete_memoized(userpagelisting)

	return {"message": "Post unsaved!"}

@app.post("/pin/<int:post_id>")
@limiter.limit('1/second', scope=rpath)
@limiter.limit('1/second', scope=rpath, key_func=get_ID)
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400)
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400, key_func=get_ID)
@auth_required
def pin_post(post_id, v):
	p = get_post(post_id)
	if p:
		if v.id != p.author_id: abort(403, "Only the post author can do that!")
		p.is_pinned = not p.is_pinned
		g.db.add(p)
		cache.delete_memoized(userpagelisting)
		if p.is_pinned: return {"message": "Post pinned!"}
		else: return {"message": "Post unpinned!"}
	return abort(404, "Post not found!")

@app.put("/post/<int:post_id>/new")
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400)
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400, key_func=get_ID)
@auth_required
def set_new_sort(post_id:int, v:User):
	p = get_post(post_id)
	if not v.can_edit(p): abort(403, "Only the post author can do that!")
	p.new = True
	g.db.add(p)

	if v.id != p.author_id:
		ma = ModAction(
				kind = "set_new",
				user_id = v.id,
				target_post_id = p.id,
			)
		g.db.add(ma)
		send_repeatable_notification(p.author_id, f"@{v.username} (a site admin) has changed the the default sorting of comments on [{p.title}](/post/{p.id}) to `new`")

	return {"message": "Changed the the default sorting of comments on this post to 'new'"}


@app.delete("/post/<int:post_id>/new")
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400)
@limiter.limit(DEFAULT_RATELIMIT, deduct_when=lambda response: response.status_code < 400, key_func=get_ID)
@auth_required
def unset_new_sort(post_id:int, v:User):
	p = get_post(post_id)
	if not v.can_edit(p): abort(403, "Only the post author can do that!")
	p.new = None
	g.db.add(p)

	if v.id != p.author_id:
		ma = ModAction(
				kind = "set_hot",
				user_id = v.id,
				target_post_id = p.id,
			)
		g.db.add(ma)
		send_repeatable_notification(p.author_id, f"@{v.username} (a site admin) has changed the the default sorting of comments on [{p.title}](/post/{p.id}) to `hot`")

	return {"message": "Changed the the default sorting of comments on this post to 'hot'"}


extensions = IMAGE_FORMATS + VIDEO_FORMATS + AUDIO_FORMATS

@app.get("/submit/title")
@limiter.limit("3/minute", deduct_when=lambda response: response.status_code < 400)
@limiter.limit("3/minute", deduct_when=lambda response: response.status_code < 400, key_func=get_ID)
@auth_required
def get_post_title(v):
	POST_TITLE_TIMEOUT = 5
	url = request.values.get("url")
	if not url or '\\' in url: abort(400)
	url = url.strip()
	if not url.startswith('http'): abort(400)

	checking_url = url.lower().split('?')[0].split('%3F')[0]
	if any((checking_url.endswith(f'.{x}') for x in extensions)):
		abort(400)

	try:
		x = gevent.with_timeout(POST_TITLE_TIMEOUT, requests.get, url, headers=HEADERS, timeout=POST_TITLE_TIMEOUT, proxies=proxies)
	except: abort(400)

	content_type = x.headers.get("Content-Type")
	if not content_type or "text/html" not in content_type: abort(400)

	# no you can't just parse html with reeeeeeeegex
	match = html_title_regex.search(x.text)
	if match and match.lastindex >= 1:
		title = match.group(1)
	else: abort(400)

	title = html.unescape(title)

	return {"url": url, "title": title}

@app.post("/edit_post/<int:pid>")
@limiter.limit('1/second', scope=rpath)
@limiter.limit('1/second', scope=rpath, key_func=get_ID)
@limiter.limit("10/minute;100/hour;200/day", deduct_when=lambda response: response.status_code < 400)
@limiter.limit("10/minute;100/hour;200/day", deduct_when=lambda response: response.status_code < 400, key_func=get_ID)
@is_not_permabanned
def edit_post(pid, v):
	p = get_post(pid)
	if not v.can_edit(p): abort(403)

	# Disable edits on things older than 1wk unless it's a draft or editor is a jannie
	if time.time() - p.created_utc > 7*24*60*60 and not p.private \
	and v.admin_level < PERMS["IGNORE_1WEEk_EDITING_LIMIT"] and v.id not in EXEMPT_FROM_1WEEK_EDITING_LIMIT:
		abort(403, "You can't edit posts older than 1 week!")

	title = sanitize_raw_title(request.values.get("title", ""))
	body = sanitize_raw_body(request.values.get("body", ""), True)

	if v.id == p.author_id:
		if v.longpost and (len(body) < 280 or ' [](' in body or body.startswith('[](')):
			abort(403, "You have to type more than 280 characters!")
		elif v.bird and len(body) > 140:
			abort(403, "You have to type less than 140 characters!")

	if not title:
		abort(400, "Please enter a better title!")


	if not p.private:
		notify_users = NOTIFY_USERS(f'{title} {body}', v, oldtext=f'{p.title} {p.body}', ghost=p.ghost, log_cost=p)
		if notify_users:
			cid, text = notif_comment2(p)
			if notify_users == 'everyone':
				alert_everyone(cid)
			else:
				for x in notify_users:
					add_notif(cid, x, text, pushnotif_url=p.permalink)


	if title != p.title:
		title_html = filter_emojis_only(title, golden=False)

		if v.id == p.author_id and v.marseyawarded and not marseyaward_title_regex.fullmatch(title_html):
			abort(403, "You can only type marseys!")

		if 'megathread' in title.lower() and 'megathread' not in p.title.lower():
			p.new = True

		p.title = title
		p.title_html = title_html

	body = process_files(request.files, v, body)
	body = body.strip()[:POST_BODY_LENGTH_LIMIT(v)] # process_files() may be adding stuff to the body

	if body != p.body:
		body_html = sanitize(body, golden=False, limit_pings=100)

		if v.id == p.author_id and v.marseyawarded and marseyaward_body_regex.search(body_html):
			abort(403, "You can only type marseys!")


		p.body = body

		process_poll_options(v, p)

		for text in [p.body, p.title, p.url]:
			if execute_blackjack(v, p, text, 'post'): break

		if len(body_html) > POST_BODY_HTML_LENGTH_LIMIT:
			abort(400, "Post body_html too long!")

		p.body_html = body_html


	if not complies_with_chud(p):
		abort(403, f'You have to include "{v.chud_phrase}" in your post!')


	if v.id == p.author_id:
		if int(time.time()) - p.created_utc > 60 * 3: p.edited_utc = int(time.time())
		g.db.add(p)
	else:
		ma=ModAction(
			kind="edit_post",
			user_id=v.id,
			target_post_id=p.id
		)
		g.db.add(ma)

	return {"message": "Post edited successfully!"}