#!/usr/bin/python3
#/* vim:set ts=2 set noexpandtab */
import json, uuid, hashlib, sqlite3, base64
from flask import Flask, render_template, url_for, request
from werkzeug import secure_filename
app = Flask(__name__)
strings = None
settings = None

@app.route("/")
def index():
	return render_template("search.html", language="english", categories=settings["categories"], strings=strings)

@app.route("/categories")
def categorys():
	return render_template("categories.html", categories=settings["categories"])

@app.route("/create", methods=['GET','POST'])
def create():
	if request.method == "GET":
		return render_template("create.html", language="english", categories=settings["categories"], strings=strings, errors=None)
	elif request.method == "POST":
		errors = createNewTorrent(request)
		if errors == None:
			return "It's allright"
		else:
			return render_template("create.html", language="english", categories=settings["categories"], strings=strings, errors=errors)

@app.route("/search", methods=['GET'])
def search():
	return render_template("result.html", results=request.args.get("q", ""))

def init():
	global strings
	global settings
	with open("strings.json") as stringsJson:
		strings = json.load(stringsJson)

	with open("settings.json") as settingsJson:
		settings = json.load(settingsJson)
	initDb()

def initDb():
	connection = sqlite3.connect("torrentdb.sqlite")
	c = connection.cursor()
	c.execute('CREATE TABLE IF NOT EXISTS torrents (fileid TEXT PRIMARY KEY NOT NULL, name TEXT NOT NULL, category TEXT NOT NULL, subcategory TEXT NOT NULL, description TEXT NOT NULL);')
	c.execute('CREATE TABLE IF NOT EXISTS language_mapping (fileid TEXT NOT NULL, language TEXT NOT NULL);')
	connection.commit()
	connection.close()

def getLocalString(language, descriptor):
	global strings
	if language in strings.keys():
		if descriptor in strings[language].keys():
			return strings[language][descriptor]
		else:
			return descriptor
	else:
		return descriptor

def createNewTorrent(reuqest):
	uploadfile = request.files["torrentFile"]
	filename = secure_filename(uploadfile.filename)

	h = hashlib.sha256()
	h.update((str(uuid.uuid4()) + filename).encode())
	safeFilename = h.hexdigest()
	uploadfile.save("torrentFiles/" + safeFilename)
	print("=== CREATE NEW TORRENT FILE ===")
	print( "Name:         " + request.form["name"] )
	print( "Torrent file: " + safeFilename )
	print( "Category:     " + request.form["category"] )
	print( "Subcategory:  " + request.form["subcategory"] )
	print( "Description:  " + request.form["description"] )

	#TODO: Validate the input serverside before writing it to the database
	name = request.form["name"]
	category = request.form["category"]
	subcategory = request.form["subcategory"]
	description = request.form["description"]
	languages = []
	newTFile = TorrentFile(safeFilename, name, category, subcategory, description, languages)
	connection = sqlite3.connect("torrentdb.sqlite")
	newTFile.writeToDb(connection.cursor())
	connection.commit()
	connection.close()
	return ["Error1"]

class TorrentFile():
	fileid = None
	name = None
	category = None
	subcategory = None
	description = None
	languages = []
	def __init__(self, fileid=fileid, name=name, category=category, subcategory=subcategory, description=description, languages=languages):
		self.fileid = fileid
		self.name = name
		self.category = category
		self.subcategory = subcategory
		self.description = description
		self.languages = languages

	def writeToDb(self, cursor):
		c = cursor
		b64description = base64.b64encode(self.description.encode())
		c.execute("INSERT INTO torrents(fileid, name, category, subcategory, description) VALUES(:fileid, :name, :category, :subcategory, :description)", { 'fileid' : self.fileid, 'name' : self.name, 'category' : self.category, 'subcategory' : self.subcategory, 'description' : b64description })
		for language in self.languages:
			c.execute("INSERT INTO language_mapping(fileid, language)", { "fileid" : self.fileid, "language" : language })

if __name__ == "__main__":
	init()
	app.jinja_env.globals.update(getLocalString=getLocalString)
	app.jinja_env.globals.update(json=json)
	app.jinja_env.globals.update(sorted=sorted)
	app.run(debug=True)