server.py

# -*- coding: utf-8 -*-

__version_info__ = ('0', '0', '1')
__version__ = '.'.join(__version_info__)

from gevent import monkey
monkey.patch_all()

import time
import uuid
from dragon import Dragon
from ppl import Player
from core import Battle
from threading import Thread
import functools
import random
from models import MongoUser

from flask.ext.login import current_user, login_user
from flask.ext.login import LoginManager, UserMixin
from flask.ext.mongoengine import MongoEngine, MongoEngineSessionInterface
# from flask_debugtoolbar import DebugToolbarExtension
from flask_redis import Redis
from flask import Flask, render_template, session, request, make_response
from flask.ext.socketio import SocketIO, emit, join_room, leave_room, \
    close_room, disconnect

app = Flask(__name__)
login_manager = LoginManager()
login_manager.init_app(app)
app.debug = True
app.config['SECRET_KEY'] = 'secret!'
socketio = SocketIO(app)

app.config.from_pyfile('mongo.cfg')

from models import db
db.init_app(app)
# Redis(app, 'REDIS_LINKS')
# Redis(app, 'REDIS_CONTENT')
redis_store = Redis(app)
app.session_interface = MongoEngineSessionInterface(db)

thread = None
# gl_dragon = None
gl_battle = None

class User(MongoUser,UserMixin):
    # proxy for a database of users
    pass


@login_manager.request_loader
def load_user(request):
    token = request.headers.get('Authorization')
    if token is None:
        token = request.args.get('token')
 
    if token is not None:
        username,password = token.split(":") # naive token
        user_entry = User.get(username)
        if (user_entry is not None):
            user = User(user_entry[0],user_entry[1])
            if (user.password == password):
                return user
    return None


def authenticated_only(f):
    @functools.wraps(f)
    def wrapped(*args, **kwargs):
        if not current_user.is_authenticated():
            request.namespace.disconnect()
        else:
            return f(*args, **kwargs)
    return wrapped

def is_finish(battle):
    if battle and (battle.dragon.health <= 0 or battle.finish):
        return True
    return False

def prepare_battle(battle):
    if battle:
        return battle

    dragon = Dragon('Valakas')
    #ten people figth with them!
    brave_people = [Player() for _ in xrange(10)]
    battle = Battle(dragon, brave_people)
    battle.started = True
    return battle

def background_battle(count, battle):
    dragon = battle.dragon
    ppl = battle.ppl
    for pp in ppl:
        pp.attacks(dragon)
        socketio.emit('battle response',
                      {'data': '{0} attack {1} for {2} damage!'.format(pp.name, dragon.name, pp.attack), 'count': count},
                      namespace='/cave')
    if not ppl:
        battle.finish = True
        return socketio.emit('battle response',
                      {'data': "Dragon kill all heroes!", 'count': count},
                      namespace='/cave')

    if dragon.check_dragon_attack(0.3):
        target = random.choice(ppl)
        target.health -= dragon.attack

        socketio.emit('battle response',
                      {'data': "Dragon wanna attack!", 'count': count},
                      namespace='/cave')
        socketio.emit('battle response',
                      {'data': "{} attack {} for {} damage!".format(dragon.name, target.name, dragon.attack), 'count': count},
                      namespace='/cave')
        if target.health <= 0:
            battle.ppl = [unit for unit in ppl if unit != target]
            socketio.emit('battle response',
                      {'data': "{} kill {}!".format(dragon.name, target.name), 'count': count},
                      namespace='/cave')
    socketio.emit('battle response',
                      {'data': "Dragon's health is {}".format(max(0, dragon.health)), 'count': count},
                      namespace='/cave')


def background_thread():
    """Example of how to send server generated events to clients."""
    count = 0
    while True:
        global gl_battle
        if is_finish(gl_battle):
            socketio.emit('my response',
                      {'data': 'Dragon is coming soon, wait untill respawn', 'count': count},
                      namespace='/cave')
            del battle
            gl_battle, gl_dragon = None, None
            time.sleep(20)

        battle = prepare_battle(gl_battle)
        gl_battle = battle
        background_battle(count, battle)
        time.sleep(10)
        count += 1


@app.route('/')
def index():
    # global thread
    # if thread is None:
    #     thread = Thread(target=background_thread)
    #     thread.start()
    return render_template('index.html')


def searching_room(dragon):
    room_key = 'room:{dragon}'.format(dragon=dragon)
    return redis_store.smembers(room_key)


@socketio.on('my event', namespace='/cave')
def cave_message(message):
    print current_user
    session['receive_count'] = session.get('receive_count', 0) + 1
    emit('my response',
         {'data': message['data'], 'count': session['receive_count']})

@socketio.on('auth', namespace='/cave')
def auth(message):
    name = message['data']
    user = User.get('Andrew')
    pow_1 = login_user(user)
    session["a"] = "hello session"
    session.modified = True
    app.save_session(session, make_response('dummy'))
    print app.session_interface.cls.objects.count()
    # data = db.session.query(User).filter_by(nickname='Andrew').first()
    # print db.session
    session['receive_count'] = session.get('receive_count', 0) + 1
    emit('my response',
         {'data': message['data'], 'count': session['receive_count']})

@socketio.on('search', namespace='/cave')
def search_room(message):
    #need user
    # TODO refact
    user_name = 'Andrew'
    dragon = message['dragon']
    check_key = redis_store.get(user_name)
    session['receive_count'] = session.get('receive_count', 0) + 1
    if not check_key:
        rooms = searching_room(dragon)
        if not rooms:
            room_id = str(uuid.uuid4())
            redis_store.sadd('room:{}'.format(dragon),*[room_id])
            redis_store.set(user_name, dragon +":"+ room_id)
        else :
            room_id = random.choice(list(rooms))
        
        test_filter = filter(lambda room: room != room_id, request.namespace.rooms)
        if request.namespace.rooms:
                data = 'leave old rooms before!'
        else:
            join_room(room_id)
            redis_store.sadd('room:{}'.format(dragon),*[room_id])
            redis_store.set(user_name, dragon +":"+ room_id)
            request.namespace.channel = room_id
            data = 'join_room: ' + ', '.join(request.namespace.rooms)
        emit('my response',
             {'data': data, 'count': session['receive_count']})
        print request.namespace.channel
    else:
        _, room_id = check_key.split(":")
        request.namespace.channel = room_id
        if not request.namespace.rooms:
            join_room(room_id)
        emit('my response',
                 {'data': 'in room: ' + ', '.join(request.namespace.rooms), 'count': session['receive_count']})


@socketio.on('sent to room', namespace='/cave')
def send_room_message(message):
    session['receive_count'] = session.get('receive_count', 0) + 1
    if request.namespace.channel:
        emit('my response',
             {'data': message['data'], 'count': session['receive_count']},
             room=request.namespace.channel)
    else:
        emit('my response',
             {'data': 'Not in room', 'count': session['receive_count']},)

@socketio.on('start battle', namespace='/cave')
def join_battle(message):
    session['receive_count'] = session.get('receive_count', 0) + 1
    if request.namespace.channel:
        global thread
        if thread is None:
            thread = Thread(target=background_thread)
            thread.start()
        # emit('my response',
        #      {'data': "Let's Battle begin!",
        #       'count': session['receive_count']})


@socketio.on('leave', namespace='/cave')
def leave():
    user_name = 'Andrew'
    check_key = redis_store.get(user_name)
    session['receive_count'] = session.get('receive_count', 0) + 1
    if check_key:
        _, room_id = check_key.split(":")
        leave_room(room_id)
        data = 'leave ' + room_id
        request.namespace.channel = None
        redis_store.delete(user_name)
    else:
        data='not in rooms'
    emit('my response',
         {'data': data, 'count': session['receive_count']})


@socketio.on('my broadcast event', namespace='/cave')
def cave_broadcast_message(message):
    session['receive_count'] = session.get('receive_count', 0) + 1
    emit('my response',
         {'data': message['data'], 'count': session['receive_count']},
         broadcast=True)


# @socketio.on('join', namespace='/cave')
# def join(message):
#     join_room(message['room'])
#     session['receive_count'] = session.get('receive_count', 0) + 1
#     emit('my response',
#          {'data': 'In rooms: ' + ', '.join(request.namespace.rooms),
#           'count': session['receive_count']})


# @socketio.on('close room', namespace='/cave')
# def close(message):
#     session['receive_count'] = session.get('receive_count', 0) + 1
#     emit('my response', {'data': 'Room ' + message['room'] + ' is closing.',
#                          'count': session['receive_count']},
#          room=message['room'])
#     close_room(message['room'])


@socketio.on('disconnect request', namespace='/cave')
def disconnect_request():
    session['receive_count'] = session.get('receive_count', 0) + 1
    emit('my response',
         {'data': 'Disconnected!', 'count': session['receive_count']})
    disconnect()


@socketio.on('connect', namespace='/cave')
def cave_connect():
    request.namespace.channel = None
    #set online?
    emit('my response', {'data': 'Connected', 'count': 0})

@socketio.on_error('/cave')
def error_handler_namespace(value):
    raise value


@socketio.on('disconnect', namespace='/cave')
def cave_disconnect():
    # set reward
    # can't return again
    print('Client disconnected')


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