#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import flask
from flask_socketio import SocketIO
import flask_login as fll
import datetime
from db import db, User, Game, Player, levels_users
from belote_jeu import N_TURN, N_PLAYERS
import belote_ws
import settings

login_manager = fll.LoginManager()

app = flask.Flask(__name__)
app.config.from_pyfile('settings.cfg')

#######################################################################
#                          Plugin management                          #
#######################################################################

# SocketIO
socketio = SocketIO(app, cors_allowed_origins=settings.PUBLIC_URL)
login_manager.init_app(app)

# Database management
db.app = app
db.init_app(app)
db.create_all()
db.session.commit()

# Insert admin if not exist
if User.query.limit(1).first() is None:
    admin = User(login='admin', name='Admin', level=levels_users['Admin'])
    admin.set_password('admin')
    db.session.add(admin)
    db.session.commit()

# Login management
@login_manager.user_loader
def load_user(user_id):
    if user_id is None :
        return None
    return User.query.get(user_id)

@login_manager.unauthorized_handler
def unauthorized_callback():
    return flask.redirect('/login?next=' + flask.request.path)


#######################################################################
#                    Global variables or fuctions                     #
#######################################################################
URL_DEFAULT = '/games'
namespaces_join = {}
namespaces = {}

def create_namespace(gid, join=False):
    if(join):
        namespace = belote_ws.CustomNamespaceJoin(gid)
        namespaces_join[gid] = True
        socketio.on_namespace(namespace)
    else:
        namespace = belote_ws.CustomNamespacePlay(gid)
        namespaces[gid] = True
        socketio.on_namespace(namespace)


@app.route('/')
def home():
    user = fll.current_user
    if not hasattr(user, 'level'):
        user = None
    return flask.render_template("index.html", user=user)
#######################################################################
#                            Login, logout                            #
#######################################################################

@app.route('/login', methods=['GET', 'POST'])
def login():
    if fll.current_user.is_authenticated:
        return flask.redirect(URL_DEFAULT)
    if flask.request.method=="POST":
        username = flask.request.form['username']
        password = flask.request.form['password']
        user =  User.query.get(username)
        if user and user.level > levels_users['Inactive'] and user.check_password(password):
            fll.login_user(user)
            user.last_login = datetime.datetime.utcnow()
            next = flask.request.args.get('next')
            if next is not None and next[0]=='/':
                return flask.redirect(next)
            else:
                return flask.redirect(URL_DEFAULT)
        else:
            app.logger.warning('Login fail for user {} from {}'.format(user, flask.request.remote_addr))
            flask.flash('Nom d\'utilisateur ou mot de passe incorrect')
    return flask.render_template('login.html', user=None)

@app.route('/logout')
def logout():
    fll.logout_user()
    return flask.redirect('/')

#######################################################################
#                           Games : list                              #
#######################################################################

@app.route('/games')
@fll.login_required
def games():
    games = Game.query.all()
    mesjeux = []
    joinable = []
    for g in games:
        if g.admin==fll.current_user.login:
            mesjeux.append(g)
        elif g.can_join(fll.current_user):
            joinable.append(g)
    cancreategames = fll.current_user.level >= levels_users['Can create games']
    candeletegames = fll.current_user.level >= levels_users['Admin']
    return flask.render_template('games.html', mesjeux=mesjeux, joinable=joinable, user=fll.current_user, \
            cancreategames=cancreategames, candeletegames=candeletegames)

#######################################################################
#                   Create, join and play to a game                   #
#######################################################################

@app.route('/add_game', methods=['GET', 'POST'])
@fll.login_required
def game_add():
    player = fll.current_user
    if fll.current_user.level >= levels_users['Can create games']:
        if flask.request.method=="POST":
            name = flask.request.form['name']
            if name is None or name == '':
                return flask.redirect('/add_game')
            game = Game(name=name, admin=player.login)
            db.session.add(game)
            db.session.commit()
            game.join(fll.current_user)
            db.session.commit()
            return flask.redirect('/game/{}'.format(game.id))
        return flask.render_template('game_add.html', user=fll.current_user)
    return flask.redirect(URL_DEFAULT)

@app.route('/game/<roomid>/join')
@fll.login_required
def game_page_join(roomid):
    game = Game.query.get(roomid)
    if game:
        player = fll.current_user
        if game.start:
            return flask.redirect('/game/{}'.format(roomid))
        if game.can_join(player):
            if game.id not in namespaces_join:
                create_namespace(game.id, join=True)
            return flask.render_template('game_join.html', game=game, user=player, admin=game.admin)
    return flask.redirect(URL_DEFAULT)

@app.route('/game/<roomid>/start')
@fll.login_required
def game_page_start(roomid):
    game = Game.query.get(roomid)
    if game:
        player = fll.current_user
        if game.isadmin(player) and game.fixplayers and not game.start:
            return flask.render_template('game_start.html', game=game, user=player)
        return flask.redirect('/game/{}'.format(roomid))
    return flask.redirect(URL_DEFAULT)

@app.route('/game/<roomid>')
@fll.login_required
def game_page(roomid):
    game = Game.query.get(roomid)
    if game:
        player = fll.current_user
        if not game.start:
            return flask.redirect('/game/{}/join'.format(roomid))
        if game.authorized(player) :
            if game.id not in namespaces:
                create_namespace(game.id)
            return flask.render_template('game.html', game=game, user=player)
    return flask.redirect(URL_DEFAULT)

@app.route('/game/<roomid>/del')
@fll.login_required
def delgame(roomid):
    game = Game.query.get(roomid)
    if game is not None and fll.current_user.login == game.admin:
        confirm = flask.request.args.get('confirm')
        if confirm is not None:
            db.session.delete(game)
            db.session.commit()
        else:
            return flask.render_template('game_del.html', game=game, user=fll.current_user)
    return flask.redirect(URL_DEFAULT)

#######################################################################
#                          Users management                           #
#######################################################################
@app.route('/admin/users')
@fll.login_required
def admin_users():
    if fll.current_user.level < levels_users['Can manage simple users']:
        return flask.redirect(URL_DEFAULT)
    users = User.query.all()
    return flask.render_template('admin_users.html', user=fll.current_user, users=users)

@app.route('/admin/users/<user>', methods=['GET', 'POST'])
@fll.login_required
def edituser(user):
    new = user=='new'
    user = User.query.get(user)
    if not new and user is None:
        return flask.redirect('/admin/users')
    if fll.current_user.level >= levels_users['Admin'] or \
            fll.current_user.level >= levels_users['Can manage simple users'] and \
            fll.current_user.level > user.level:
        if flask.request.method=="POST":
            username = flask.request.form['username']
            name = flask.request.form['name']
            password = flask.request.form['password']
            level = int(flask.request.form['level'])
            if level not in levels_users.values():
                flask.flash('Level unknown')
                return flask.render_template("admin_user_edit.html", user=fll.current_user, useredit=user, levels_users=levels_users)
            if fll.current_user.level < levels_users['Admin']:
                if not level < fll.current_user.level:
                    flask.flash('Invalid level')
                    return flask.render_template("admin_user_edit.html", user=fll.current_user, useredit=user, levels_users=levels_users)
            if len(password)<2 and new:
                flask.flash('Mot de passe trop court')
                return flask.render_template("admin_user_edit.html", user=fll.current_user, useredit=user, levels_users=levels_users)
            if new and User.query.get(username) is not None:
                flask.flash('Login déjà utilisé ! Choisissez un autre !')
                return flask.render_template("admin_user_edit.html", user=fll.current_user, useredit=user, levels_users=levels_users)
            if new:
                usertoadd = User(login=username, name=name, level=level)
                usertoadd.set_password(password)
                db.session.add(usertoadd)
            else:
                user.name = name
                if len(password)>=2:
                    user.set_password(password)
                user.level = level
            db.session.commit()
            return flask.redirect('/admin/users')
        else:
            return flask.render_template("admin_user_edit.html", user=fll.current_user, useredit=user, levels_users=levels_users)
    return flask.redirect(URL_DEFAULT)

@app.route('/admin/users/<user>/del')
@fll.login_required
def deluser(user):
    user = User.query.get(user)
    if user is None:
        return flask.redirect('/admin/users')
    if fll.current_user.level >= levels_users['Admin'] or \
            fll.current_user.level >= levels_users['Can manage simple users'] and \
            fll.current_user.level > user.level:
        confirm = flask.request.args.get('confirm')
        if confirm is not None:
            delete_game(user=user)
            db.session.delete(user)
            db.session.commit()
            return flask.redirect('/admin/users')
    return flask.render_template("admin_user_del.html", user=fll.current_user, useredit=user)

@app.route('/password', methods=['GET', 'POST'])
@fll.login_required
def change_password():
    if flask.request.method=="POST":
        password = flask.request.form['password']
        if len(password) < 5:
            flask.flash('Mot de passe trop court !')
        else:
            fll.current_user.set_password(password)
            db.session.commit()
            return flask.redirect(URL_DEFAULT)
    return flask.render_template("password.html", user=fll.current_user)

#######################################################################
#                           Game managament                           #
#######################################################################
@app.route('/admin/games')
@fll.login_required
def admin_games():
    if fll.current_user.level < levels_users['Can manage games']:
        return flask.redirect(URL_DEFAULT)
    games = Game.query.all()
    return flask.render_template('admin_games.html', user=fll.current_user, games=games)

@app.route('/admin/games/<roomid>/del')
@fll.login_required
def admin_game_del(roomid):
    game = Game.query.get(roomid)
    if game is None:
        return flask.redirect('/admin/games')
    if fll.current_user.level >= levels_users['Can manage games']:
        confirm = flask.request.args.get('confirm')
        if confirm is not None:
            delete_game(game=game)
            return flask.redirect('/admin/games')
        else:
            return flask.render_template('game_del.html', user=fll.current_user, game=game)
    return flask.redirect(URL_DEFAULT)

@app.route('/game/<roomid>/see')
@fll.login_required
def see_game(roomid):
    game = Game.query.get(roomid)
    if game is None:
        return flask.redirect('/games')
    if fll.current_user.level >= levels_users['Can manage games'] or  game.authorized(fll.current_user) and game.turn==N_TURN*N_PLAYERS:
        #return game.serialize_state_anonymous()
        return flask.render_template('game_see.html', user=fll.current_user, game=game, serialized=game.serialize_state_anonymous())
    return flask.redirect(URL_DEFAULT)

@app.route('/admin/games/new', methods=['GET', 'POST'])
@fll.login_required
def admin_games_new():
    if fll.current_user.level < levels_users['Can manage games']:
        return flask.redirect(URL_DEFAULT)
    if flask.request.method=="POST":
        name = flask.request.form['name']
        login0 = flask.request.form['player0']
        login1 = flask.request.form['player1']
        login2 = flask.request.form['player2']
        login3 = flask.request.form['player3']
        admin = flask.request.form['admin']
        if 'fixplayers' in flask.request.form:
            start = True
        else:
            start = False

        try:
            admin = int(admin)
        except:
            return 'Error'
        if admin<0 or admin>3:
            return 'Error'

        adminn = -1
        lusers = []

        if login0 != '':
            user0 = User.query.get(login0)
            if user0 is None:
                flask.flash('Utilisateur inconnu {}'.format(login0))
            else:
                lusers.append(user0)
                if admin==0: adminn = 0
        if login1 != '':
            user1 = User.query.get(login1)
            if user1 is None:
                flask.flash('Utilisateur inconnu {}'.format(login1))
            else:
                if admin==1: adminn = len(lusers)
                lusers.append(user1)
        if login2 != '':
            user2 = User.query.get(login2)
            if user2 is None:
                flask.flash('Utilisateur inconnu {}'.format(login2))
            else:
                if admin==2: adminn = len(lusers)
                lusers.append(user2)
        if login3 != '':
            user3 = User.query.get(login3)
            if user3 is None:
                flask.flash('Utilisateur inconnu {}'.format(login3))
            else:
                if admin==3: adminn = len(lusers)
                lusers.append(user3)

        if adminn <0:
            flask.flash('Vous devez définir un maitre du jeu (admin).')
        elif len(name)<2:
            flask.flash('Nom trop court !')
        else:
            game = Game(name=name, admin=lusers[adminn].login)
            db.session.add(game)
            db.session.commit()
            ordered_players = []
            for u in lusers:
                ordered_players.append(u.login)
                game.join(u)
            db.session.commit()

            if start and game.can_start():
                game.fix_players()
                game.start_game(ordered_players)
            return flask.redirect('/admin/games')
    return flask.render_template('admin_game_add.html', user=fll.current_user)



def delete_game(user=None, game=None):
    if user is not None:
        games = Game.query.filter_by(admin=user.login).all()
        for g in games:
            for p in g.players:
                db.session.delete(p)
            db.session.delete(g)
        db.session.commit()
    if isinstance(game, int):
        g = Game.query.get(game)
        if g is not None:
            for p in g.players:
                db.session.delete(p)
            db.session.delete(g)
            db.session.commit()
    elif game is not None:
        for p in game.players:
            db.session.delete(p)
        db.session.delete(game)
        db.session.commit()


if __name__ == '__main__':
    socketio.run(app, debug=True, host='127.0.0.1', port=8080 )