commit ccc9c44ebd48f0e6ce2342b737bc20a438a6ef02
Author: daniel <daniel@Tropeninsel>
Date:   Mon Jun 17 18:17:59 2019 +0200

    initial commit backend

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..f3a6164
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,131 @@
+
+# Created by https://www.gitignore.io/api/python
+# Edit at https://www.gitignore.io/?templates=python
+
+### Python ###
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+pip-wheel-metadata/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
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+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+.hypothesis/
+.pytest_cache/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+
+# Flask stuff:
+instance/
+.webassets-cache
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+# Scrapy stuff:
+.scrapy
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+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
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+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
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+*.sage.py
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+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
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+.spyderproject
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+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
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+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# End of https://www.gitignore.io/api/python
+
diff --git a/actors.py b/actors.py
new file mode 100644
index 0000000..7057725
--- /dev/null
+++ b/actors.py
@@ -0,0 +1,34 @@
+import chat.response as response
+
+
+class ActorManager:
+    def __init__(self):
+        self.actors = dict()
+
+    def add_character(self, char_dict):
+        name = char_dict['name']
+        self.actors[name] = char_dict
+        print(self.actors)
+        return response.build_new_character(None, char_dict)
+
+    def remove_actor(self, name):
+        if not name in self.actors:
+            return None # TODO FEHLERMELDUNG, CHARAKTER EXISTIERT NICHT
+        self.actors.pop(name)
+        return response.build_remove_actor(None, None, name)
+
+    def move_by(self, name, delta):
+        if not name in self.actors:
+            return None # TODO FEHLERMELDUNG, CHARAKTER EXISTIERT NICHT
+        actor = self.actors[name]
+        actor.tick += delta
+        return response.build_new_character(None, None, actor)
+
+    def move_to(self, name, tick):
+        if not name in self.actors:
+            return None # TODO FEHLERMELDUNG, CHARAKTER EXISTIERT NICHT
+        actor = self.actors[name]
+        actor.state = TickState.ACTING.value
+        actor.tick = tick
+        return response.build_new_character(None, None, actor)
+
diff --git a/chat/__init__.py b/chat/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/chat/chat_commands.py b/chat/chat_commands.py
new file mode 100644
index 0000000..90f682d
--- /dev/null
+++ b/chat/chat_commands.py
@@ -0,0 +1,79 @@
+import chat.dice as dice
+import chat.response as response
+from chat.command_exception import CommandException
+import re
+
+
+class CommandHandler:
+    def __init__(self):
+        self.commands = {
+            '/roll': self.custom_roll,
+            '/r': self.custom_roll,
+            '/whisper': self.whisper,
+            '/w': self.whisper
+        }
+        self.skill_map = {'Tera': {'Akrobatik': 25,
+                                   'Arkane Kunde': 10}
+                          }
+
+    def handle(self, char, content):
+        message = content.strip('\n')
+        if message[0] == '.':
+            return self.skill_roll(char, message)
+        else:
+            message = message.split(' ', 1)
+            if (len(message) > 1) and (message[0] in self.commands):
+                func = self.commands[message[0]]
+                r = func(char, message)
+                return r
+            return response.build_public_message(char, content)
+
+    def custom_roll(self, char, message):
+        pattern = '(?P<dice_num>\d+)(?:d|w)(?P<dice_val>\d+)(?P<maths>(?:(?:\+|\-)\d+)*)'
+        command = re.sub('\s+', '', message[1])
+
+        match = re.match(pattern, command)
+        if match is None:
+            return response.build_system_message(char,
+                                                 'Ungültige Formatierung des Befehls: {}'.format(' '.join(message)))
+
+        eyes, result = dice.custom_roll(int(match.group('dice_num')),
+                                        int(match.group('dice_val')),
+                                        match.group('maths'))
+        return response.build_dice_roll(char, ' '.join(message), eyes, result)
+
+    def skill_roll(self, char, message):
+        print(char)
+        print(message)
+        print(self.skill_map)
+        if char not in self.skill_map:
+            return response.build_system_message(char, 'Ungültiger Charakter: {}'.format(char))
+
+        pattern = '(?P<skill>[a-zA-ZäöüÄÖÜß .&]+)(?P<maths>(?:\s*(?:\+|\-)\s*\d+)*)(?P<type>[nrs]?)'
+        match = re.match(pattern, message)
+        if match is None:
+            return response.build_system_message(char,
+                                                 'Unültige Formatierung des Befehls: {}'.format(message))
+
+        skills = self.skill_map[char]
+        if match.group('skill')[1:] not in skills:
+            return response.build_system_message(char,
+                                                 '{} hat die Fertigkeit {} nicht.'.format(char, match.group('skill')))
+
+        skill = skills[match.group('skill')[1:]]
+        type_ = match.group('type')
+        if len(type_) == 0 or type_ == 'n':
+            type_ = dice.RollTypes.NORMAL
+        elif type_ == 'r':
+            type_ = dice.RollTypes.RISKY
+        else:
+            type_ = dice.RollTypes.SAFE
+        eyes, result = dice.skill_roll(skill,
+                                       match.group('maths'),
+                                       type_)
+        print(eyes, result)
+        return response.build_dice_roll(char, message, eyes, result)
+
+    def whisper(self, char, message):
+        recipient, message = message.split(' ', 1)
+        return response.build_private_message(char, message, recipient)
diff --git a/chat/command_exception.py b/chat/command_exception.py
new file mode 100644
index 0000000..525311e
--- /dev/null
+++ b/chat/command_exception.py
@@ -0,0 +1,3 @@
+class CommandException(Exception):
+    def __init__(self, *args):
+        super().__init__(*args)
diff --git a/chat/dice.py b/chat/dice.py
new file mode 100644
index 0000000..9425bf7
--- /dev/null
+++ b/chat/dice.py
@@ -0,0 +1,47 @@
+from enum import auto, Enum
+import random
+
+
+class RollTypes(Enum):
+    NORMAL = auto()
+    RISKY = auto()
+    SAFE = auto()
+
+
+def skill_roll(skill, modifiers, type_=RollTypes.NORMAL):
+    eyes, result = roll_dice(type_)
+    result += skill
+    if len(modifiers) > 0:
+        result += eval(modifiers)
+
+    return eyes, result
+
+
+def custom_roll(n, eyes, modifiers=None):
+    eyes = n_random_eyes(n, eyes)
+    result = sum(eyes)
+
+    if len(modifiers) > 0:
+        result += eval(modifiers)
+
+    return eyes, result
+
+
+def roll_dice(type_):
+    if type_ is RollTypes.NORMAL:
+        eyes = n_random_eyes(2)
+        result = sum(eyes)
+    elif type_ is RollTypes.RISKY:
+        eyes = n_random_eyes(4)
+        eyes.sort(reverse=True)
+        result = sum(eyes[:2])
+    else:
+        eyes = n_random_eyes(2)
+        result = max(eyes)
+    return eyes, result
+
+
+def n_random_eyes(n, eyes=10):
+    return [random.randint(1, eyes) for _ in range(n)]
+
+
diff --git a/chat/response.py b/chat/response.py
new file mode 100644
index 0000000..50db7e3
--- /dev/null
+++ b/chat/response.py
@@ -0,0 +1,67 @@
+from abc import ABC
+from dataclasses import dataclass
+from events import Events
+
+
+@dataclass
+class Response(ABC):
+    sender: str
+    event: Events
+
+    def to_json(self) -> dict:
+        d = self.__dict__
+        d.pop('event')
+        return d
+
+
+@dataclass
+class NewCharacter(Response):
+    character: dict
+
+
+@dataclass
+class RemoveActor(Response):
+    message: str
+    name: str
+
+
+@dataclass
+class PublicMessage(Response):
+    message: str
+
+
+@dataclass
+class PrivateMessage(Response):
+    message: str
+    recipient: str
+
+
+@dataclass
+class DiceRoll(Response):
+    message: str
+    dice: list
+    result: int
+
+
+def build_dice_roll(sender, message, dice, result):
+    return DiceRoll(sender, Events.DICE_ROLL, message, dice, result)
+
+
+def build_new_character(sender, char_dict):
+    return NewCharacter(sender, Events.NEW_CHARACTER, char_dict)
+
+
+def build_remove_actor(sender, message, name):
+    return RemoveActor(sender, Events.REMOVE_ACTOR, message, name)
+
+
+def build_private_message(sender, message, recipient):
+    return PrivateMessage(sender, Events.PRIVATE_CHAT, message, recipient)
+
+
+def build_public_message(sender, message):
+    return PublicMessage(sender, Events.PUBLIC_CHAT, message)
+
+
+def build_system_message(user, message):
+    return PrivateMessage('System', Events.SYSTEM_MESSAGE, message, user)
diff --git a/events.py b/events.py
new file mode 100644
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--- /dev/null
+++ b/events.py
@@ -0,0 +1,14 @@
+from enum import Enum
+
+class Events(Enum):
+    PUBLIC_CHAT = 'public message'
+    PRIVATE_CHAT = 'private message'
+    SYSTEM_MESSAGE = 'system message'
+    DICE_ROLL = 'dice roll'
+    NEW_CHARACTER = 'new character'
+    REMOVE_ACTOR = 'remove actor'
+    ACTOR_ADDED = 'actor added'
+    USER_EDITED = 'user edited'
+    USER_ADDED = 'user added'
+    USER_REMOVED = 'user removed'
+
diff --git a/main.py b/main.py
new file mode 100755
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--- /dev/null
+++ b/main.py
@@ -0,0 +1,66 @@
+#!/usr/bin/env python
+
+# WS server example
+
+import eventlet
+import socketio
+
+from actors import ActorManager
+from events import Events
+
+from chat.chat_commands import CommandHandler
+from users.users import UserManager
+
+
+sio = socketio.Server()
+app = socketio.WSGIApp(sio)
+actor_manager = ActorManager()
+command_handler = CommandHandler()
+user_manager = UserManager()
+
+
+@sio.on('connect')
+def connect(sid, environ):
+    print("CONNECTED: {}".format(sid))
+    for user in user_manager.get_users():
+        sio.emit(Events.USER_ADDED.value, user, room=sid)
+
+@sio.on('disconnect')
+def disconnect(sid):
+    print("DISCONNECTED: {}".format(sid))
+    name = user_manager.remove_user(sid)
+    sio.emit(Events.USER_REMOVED.value, name)
+
+@sio.on(Events.PUBLIC_CHAT.value)
+def message(sid, data):
+    # print(data)
+    response = command_handler.handle(data['char'], data['message'])
+    # print(response)
+    # print("\n")
+    sio.emit(response.event.
+             value, response.to_json())
+
+
+@sio.on(Events.NEW_CHARACTER.value)
+def message(sid, data):
+    print("INCOMING\n", data)
+    actor_manager.add_character(data)
+    sio.emit(Events.NEW_CHARACTER.value, data)
+
+@sio.on(Events.USER_EDITED.value)
+def message(sid, data):
+    print("USER EDITED: ", sid, data)
+    if user_manager.has_user(data['old']):
+        user_manager.remove_user(sid)
+        sio.emit(Events.USER_REMOVED.value, data['old'])
+    user_manager.add_user(data['new']['characterName'], sid)
+    d = data['new']
+    d['characterLoaded'] = True
+    d['skills'] = 'Akrobatik\nArkane Kunde\nSeefahrt'
+    sio.emit(Events.USER_EDITED.value, d, room=sid)
+    sio.emit(Events.USER_ADDED.value, data['new']['characterName'])
+    
+
+if __name__ == '__main__':
+    eventlet.wsgi.server(eventlet.listen(('', 3101)), app)
+
diff --git a/test.py b/test.py
new file mode 100644
index 0000000..99ace50
--- /dev/null
+++ b/test.py
@@ -0,0 +1,3 @@
+from chat import chat_commands
+
+print(chat_commands)
diff --git a/users/__init__.py b/users/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/users/sheet_reader.py b/users/sheet_reader.py
new file mode 100644
index 0000000..e69de29
diff --git a/users/users.py b/users/users.py
new file mode 100644
index 0000000..6dccfe3
--- /dev/null
+++ b/users/users.py
@@ -0,0 +1,24 @@
+import chat.response as response
+
+
+class UserManager:
+    def __init__(self):
+        self.users = dict()
+        self.skill_map = dict()
+
+    def add_user(self, name, sid):
+        self.users[sid] = name
+        print("ADDED USER, USERS NOW IS:", self.users)
+        return name
+
+    def remove_user(self, sid):
+        print("REMOVING USER:", sid)
+        if sid in self.users:
+            return self.users.pop(sid)
+
+    def has_user(self, name):
+        return name in self.users.values()
+
+    def get_users(self):
+        return self.users.values()
+