from flask import Flask
from flask import render_template, request, g, redirect, url_for, make_response, flash, session
from flask_login import LoginManager, current_user, login_user, logout_user, login_required
from flask_log import Logging

from urllib import parse
from io import BytesIO
from wand.image import Image

import threading, os, datetime, pytz

import scripts.func as func
from scripts import database

app = Flask(__name__)
app.config["SECRET_KEY"] = "***REMOVED***"
app.config["FLASK_LOG_LEVEL"] = "DEBUG"
flask_log = Logging(app)

login_manager = LoginManager(app)
login_manager.login_view = "login"


def get_comics():
	with app.app_context():
		func.get_comics()


def verify_paths():
	with app.app_context():
		database.verify_paths()


with app.app_context():
	app.logger.debug("server start")
	database.initialize_db()
	thread = threading.Thread(target=get_comics, args=())
	thread.daemon = True
	thread.start()
	thread2 = threading.Thread(target=verify_paths, args=())
	thread2.daemon = True
	thread2.start()


@app.teardown_appcontext
def close_connection(exception):
	db = getattr(g, '_database', None)
	if db is not None:
		db.close()


def update_comic_db(sender, **kw):
	try:
		database.add_comics(kw["meta"], kw["thumbnails"])
	except Exception as e:
		print(e)


func.comic_loaded.connect(update_comic_db)


@login_manager.user_loader
def load_user(username):
	return database.get_user(username)


@app.route("/login", methods=["GET", "POST"])
def login():
	try:
		if request.method == "POST":
			username = request.form.get("username")
			password = request.form.get("password")
			user = database.get_user(username)
			if user is None or not user.check_password(password):
				flash("invalid username or password")
				return redirect(url_for("login"))
			login_user(user)
			next_page = request.args.get("next")
			if not next_page:
				next_page = url_for("home")
			return redirect(next_page)
		return render_template("login.html", title="login")
	except Exception as e:
		return str(e)


@app.route("/logout")
def logout():
	try:
		logout_user()
		return redirect(url_for("login"))
	except Exception as e:
		return str(e)


@app.route("/")
def root():
	return redirect(url_for("home"))


@app.route("/home")
@login_required
def home():
	try:
		return render_template("home.html", title="Hello World", current_user=current_user)
	except Exception as e:
		return str(e)


@app.route("/movies")
@login_required
def movies():
	return "No Movies"


@app.route("/music")
@login_required
def music():
	return "No music"


@app.route("/games")
@login_required
def games():
	return "No Games"


@app.route("/comics")
@login_required
def comics():
	polling = request.args.get("polling")

	if polling:
		try:
			return render_template("publisherList.html", comics=database.get_publishers())
		except Exception as e:
			print(e)
			return str(e)
	try:
		return render_template("publisherView.html", title="Comics", comics=database.get_publishers())
	except Exception as e:
		print(e)
		return str(e)


@app.route("/comics/")
def comic_reroute():
	return redirect(url_for("comics"))


@app.route("/comics/<publisher>")
@login_required
def comics_publisher(publisher):
	publisher = parse.unquote(publisher)
	series = request.args.get("series")
	series_year = request.args.get("seriesYear")
	issue = request.args.get("issue")
	page_number = request.args.get("pageNumber")
	if series:
		if issue:
			if page_number:
				return comic_viewer(publisher, series, series_year, issue)
			return comic_gallery(publisher, series, series_year, issue)
		return render_template("seriesView.html", title="Comics", comics=database.db_get_comics_in_series(series, publisher, series_year))
	return render_template("publisherSeriesView.html", title="Comics", comics=database.db_get_series_by_publisher(publisher))


def comic_viewer(publisher, series, series_year, issue):
	try:
		publisher_parsed = parse.quote(publisher)
		series_parsed = parse.quote(series)
		page_number = int(request.args.get("pageNumber"))
		meta = database.db_get_comic(publisher, series, series_year, issue)
		page_count = int(meta["pageCount"])

		prev_page = page_number - 1
		next_page = page_number + 1
		if next_page >= page_count:
			next_page = 0
		if prev_page < 0:
			prev_page = page_count - 1
		prev_url = "/comics/{}?series={}&seriesYear={}&issue={}&pageNumber={}".format(publisher_parsed, series_parsed, series_year, issue, prev_page)
		next_url = "/comics/{}?series={}&seriesYear={}&issue={}&pageNumber={}".format(publisher_parsed, series_parsed, series_year, issue, next_page)
		return render_template("comicView.html", title="Comics", prev_url=prev_url, next_url=next_url, comic=meta, page_number=page_number)
	except Exception as e:
		print(e)
		return str(e)


def comic_gallery(publisher, series, series_year, issue):
	try:
		meta = database.db_get_comic(publisher, series, series_year, issue)
		return render_template("comicGallery.html", title="Comics", comic=meta)
	except Exception as e:
		print(e)
		return str(e)


@app.route("/comics/get_comic/<int:comic_id>/<int:page_number>")
@login_required
def get_comic_page(comic_id, page_number):
	meta = database.db_get_comic_by_id(comic_id)
	comic = func.open_comic(meta["path"])
	byteImage = BytesIO(comic.getPage(page_number))
	image = Image(file=byteImage)
	response = make_response(image.make_blob())
	response.headers["cache-control"] = "public"
	date = pytz.utc.localize(datetime.datetime.utcfromtimestamp(os.path.getmtime(meta["path"])))
	response.headers["last-modified"] = date.strftime('%a, %d %b %Y %H:%M:%S %Z')
	response.headers["content-type"] = "image/"+image.format
	return response


@app.route("/comics/get_comic/<int:comic_id>/<int:page_number>/thumbnail")
@login_required
def get_comic_thumbnail(comic_id, page_number):
	meta = database.db_get_comic_by_id(comic_id)
	thumb = database.db_get_thumbnail_by_id_page(comic_id, page_number)
	response = make_response(thumb["image"])
	response.headers["cache-control"] = "public"
	date = pytz.utc.localize(datetime.datetime.utcfromtimestamp(os.path.getmtime(meta["path"])))
	response.headers["last-modified"] = date.strftime('%a, %d %b %Y %H:%M:%S %Z')
	response.headers["content-type"] = thumb["type"]
	return response


if __name__ == '__main__':
	app.run()