# -*- coding: utf-8 -*-
""" this module contains everything used to render different kind of posts (posts in the home buffer,
Chat messages, audios, videos, photos, comments in posts, etc)"""
from __future__ import unicode_literals
from builtins import range
import arrow
import languageHandler
import logging
from . utils import seconds_to_string

log = logging.getLogger(__file__)

### Some util funtions

def extract_attachment(attachment):
	""" Adds information about attachment files in posts. It only adds the text, I mean, no attachment file is added here.
	This will produce a result like:
	'website: http://url.com'.
	'photo: A forest'."""
	msg = ""
	if attachment["type"] == "link":
		msg = "{0}: {1}".format(attachment["link"]["title"], attachment["link"]["url"])
	elif attachment["type"] == "photo":
		msg = attachment["photo"]["text"]
		if msg == "":
			return _("photo with no description available")
	elif attachment["type"] == "video":
		msg = _("video: {0}").format(attachment["video"]["title"],)
	return msg

def short_text(status):
	""" This shorts the text to 140 characters for displaying it in the list control of buffers."""
	message = ""
	# copy_story indicates that the post is a shared repost.
	if "copy_history" in status:
		txt = status["copy_history"][0]["text"]
	else:
		txt = status["text"]
	if len(txt) < 140:
		message = clean_text(txt)
	else:
		message = clean_text(txt[:139])
	return message

def clean_audio(audio):
	""" Remove unavailable songs due to different reasons. This is used to clean the audio list when people adds audios and need to be displayed in the buffer."""
	for i in audio["items"][:]:
		if type(i) == bool:
			audio["items"].remove(i)
			audio["count"] = audio["count"] -1
	return audio

def clean_text(text):
	""" Replaces all HTML entities and put the plain text equivalent if it's possible."""
	text = text.replace("<br>", "\n")
	text = text.replace("\\n", "\n")
	return text 

def add_attachment(attachment):
	msg = ""
	tpe = ""
	if attachment["type"] == "link":
		msg = "{0}: {1}".format(attachment["link"]["title"], attachment["link"]["url"])
		tpe = _("Link")
	elif attachment["type"] == "photo":
		tpe = _("Photo")
		msg = attachment["photo"]["text"]
		if msg == "":
			msg = _("no description available")
	elif attachment["type"] == "video":
		msg = "{0}".format(attachment["video"]["title"],)
		tpe = _("Video")
	elif attachment["type"] == "audio":
		msg = "{0}".format(" ".join(render_audio(attachment["audio"])))
		tpe = _("Audio")
	elif attachment["type"] == "doc":
		msg = "{0}".format(attachment["doc"]["title"])
		tpe = _("{0} file").format(attachment["doc"]["ext"])
	elif attachment["type"] == "audio_message":
		msg = "{0}".format(" ".join(render_audio_message(attachment["audio_message"])))
		tpe = _("Voice message")
	else:
		print(attachment)
	return [tpe, msg]

### Render functions

def render_person(status, session):
	""" Render users in people buffers such as everything related to friendships or buffers created with only people.
	Example result: ["John Doe", "An hour ago"]
	Reference: https://vk.com/dev/fields"""
	if "last_seen" in status:
		original_date = arrow.get(status["last_seen"]["time"])
		# Translators: This is the date of last seen
		last_seen = _("{0}").format(original_date.humanize(locale=languageHandler.curLang[:2]),)
	# Account suspended or deleted.
	elif ("last_seen" in status) == False and "deactivated" in status:
			last_seen = _("Account deactivated")
	return ["{0} {1}".format(status["first_name"], status["last_name"]), last_seen]

def render_newsfeed_item(status, session):
	""" This me☻thod is used to render an item of the news feed.
	References:
		https://vk.com/dev/newsfeed.get
		https://vk.com/dev/post_source
		https://vk.com/dev/post
	"""
	user = session.get_user(status["source_id"], key="user1")
	# See if this is a post or repost.
	if "copy_history" in status:
		# Get the second user (whose post is been shared).
		user2 = session.get_user(status["copy_history"][0]["owner_id"], key="user2")
		# Add contents of poster to the new dict, it will create both user1_nom and user2_nom.
		user2.update(user)
		user = dict(user1_nom=_("{user1_nom} has shared the {user2_nom}'s post").format(**user2))
	message = ""
	original_date = arrow.get(status["date"])
	created_at = original_date.humanize(locale=languageHandler.curLang[:2])
	# handle status updates.
	if status["type"] == "post":
		message += short_text(status)
		if "attachment" in status and len(status["attachment"]) > 0:
			message += extract_attachment(status["attachment"])
		# If there is no message after adding text, it's because a pphoto with no description has been found.
		# so let's manually add the "no description" tag here.
		if message == "":
			message = "no description available"
	# Handle audio rendering.
	elif status["type"] == "audio" and "audio" in status:
		# removes deleted audios.
		status["audio"] = clean_audio(status["audio"])
		if status["audio"]["count"] == 1:
			data = dict(audio_file=", ".join(render_audio(status["audio"]["items"][0], session)))
			data.update(user)
			message = _("{user1_nom} has added  an audio: {audio_file}").format(**data)
		else:
			prem = ""
			for i in range(0, status["audio"]["count"]):
				composed_audio = render_audio(status["audio"]["items"][i], session)
				prem += "{0} - {1}, ".format(composed_audio[0], composed_audio[1])
			data = dict(audio_files=prem, total_audio_files=status["audio"]["count"])
			data.update(user)
			message = _("{user1_nom} has added  {total_audio_files} audios: {audio_files}").format(**data)
	# Handle audio playlists
	elif status["type"] == "audio_playlist":
		if status["audio_playlist"]["count"] == 1:
			data = dict(audio_album=status["audio_playlist"]["items"][0]["title"], audio_album_description=status["audio_playlist"]["items"][0]["description"])
			data.update(user)
			message = _("{user1_nom} has added an audio album: {audio_album}, {audio_album_description}").format(**data)
		else:
			prestring = ""
			for i in range(0, status["audio_playlist"]["count"]):
				prestring += "{0} - {1}, ".format(status["audio_playlist"]["items"][i]["title"], status["audio_playlist"]["items"][i]["description"])
			data = dict(audio_albums=prestring, total_audio_albums=status["audio_playlist"]["count"])
			data.update(user)
			message = _("{user1_nom} has added  {total_audio_albums} audio albums: {audio_albums}").format(**data)
	# handle new friends for people in the news buffer.
	elif status["type"] == "friend":
		msg_users = ""
		if "friends" in status:
			for i in status["friends"]["items"]:
				msg_users = msg_users + "{0}, ".format(session.get_user(i["user_id"])["user1_nom"])
		else:
			print(list(status.keys()))
		data = dict(friends=msg_users)
		data.update(user)
		message = _("{user1_nom} added friends: {friends}").format(**data)
	elif status["type"] == "video":
		if status["video"]["count"] == 1:
			data = dict(video=", ".join(render_video(status["video"]["items"][0], session)))
			data.update(user)
			message = _("{user1_nom} has added  a video: {video}").format(**data)
		else:
			prem = ""
			for i in range(0, status["video"]["count"]):
				composed_video = render_video(status["video"]["items"][i], session)
				prem += "{0} - {1}, ".format(composed_video[0], composed_video[1])
			data = dict(videos=prem, total_videos=status["video"]["count"])
			data.update(user)
			message = _("{user1_nom} has added  {total_videos} videos: {videos}").format(**data)
	else:
		if status["type"] != "post": print(status)
	return [user["user1_nom"], message, created_at]

def render_message(message, session):
	""" Render a message posted in a private conversation.
	Reference: https://vk.com/dev/message"""
	user = session.get_user(message["from_id"], key="user1")
	original_date = arrow.get(message["date"])
	now = arrow.now()
	original_date = original_date.to(now.tzinfo)
	# Format the date here differently depending in if this is the same day for both dates or not.
	if original_date.day == now.day:
		created_at = original_date.format(_("H:mm."), locale=languageHandler.curLang[:2])
	else:
		created_at = original_date.format(_("H:mm. dddd, MMMM D, YYYY"), locale=languageHandler.curLang[:2])
	# No idea why some messages send "text" instead "body"
	if "body" in message:
		body = message["body"]
	else:
		body = message["text"]
	data = dict(body=body, created_at=created_at)
	data.update(user)
	return ["{user1_nom}, {body} {created_at}".format(**data)]

def render_status(status, session):
	""" Render a wall post (shown in user's wall, not in newsfeed).
	Reference: https://vk.com/dev/post"""
	user = session.get_user(status["from_id"], key="user1")
	if "copy_history" in status:
		user2 = session.get_user(status["copy_history"][0]["owner_id"], key="user2")
		user2.update(user)
		user = dict(user1_nom=_("{user1_nom} has shared the {user2_nom}'s post").format(**user2))
	message = ""
	original_date = arrow.get(status["date"])
	created_at = original_date.humanize(locale=languageHandler.curLang[:2])
	if "copy_owner_id" in status:
		user2 = session.get_user(status["copy_owner_id"], key="user2")
		user2.update(user)
		user = _("{user1_nom} has shared the {user2_nom}'s post").format(**user2)
	if status["post_type"] == "post" or status["post_type"] == "copy":
		message += short_text(status)
	if "attachment" in status and len(status["attachment"]) > 0:
		message += extract_attachment(status["attachment"])
		if message == "":
			message = "no description available"
	return [user["user1_nom"], message, created_at]

def render_audio(audio, session=None):
	""" Render audio files added to VK.
	Example result:
	["Song title", "Artist", "03:15"]
	reference: https://vk.com/dev/audio_object"""
	if audio == False: return [_("Audio removed from library"), "", ""]
	return [audio["title"], audio["artist"], seconds_to_string(audio["duration"])]

def render_video(video, session=None):
	""" Render a video file from VK.
	Example result:
	["Video title", "Video description", "01:30:28"]
	Reference: https://vk.com/dev/video_object"""
	if video == False:
		return [_("Video not available"), "", ""]
	return [video["title"], video["description"], seconds_to_string(video["duration"])]

def render_audio_message(audio_message, session=None):
	""" Render a voice message from VK
	Example result:
	["Voice message", "01:30:28"]"""
	if audio_message == False:
		return [_("Voice message not available"), "", ""]
	return [seconds_to_string(audio_message["duration"])]