fix(docs): Various documentation fixed and improvments

README.md

@@ -44,11 +44,12 @@ If not you need to create user and database manually do (or similar on Windows):
     ) | sudo mysql
 
 Then you can install the database tables, this will update all tables from core + all enabled plugins.
+*Hint:* The same command can be later used to upgrade the database after plugins or core are updated.
 
     $ flaschengeist db upgrade heads
 
 ## Plugins
-To only upgrade one plugin:
+To only upgrade one plugin (for example the `events` plugin):
 
     $ flaschengeist db upgrade events@head
 

flaschengeist/database.py

@@ -22,6 +22,9 @@ migrate = Migrate()
 
 @migrate.configure
 def configure_alembic(config):
+    """Alembic configuration hook
+
+    """
     # Load migration paths from plugins
     migrations = [str(p.migrations_path) for p in current_app.config["FG_PLUGINS"].values() if p and p.migrations_path]
     if len(migrations) > 0:

flaschengeist/plugins/__init__.py

@@ -1,3 +1,29 @@
+"""Flaschengeist Plugins
+
+## Custom database tables
+
+You can add tables by declaring them using the SQLAlchemy syntax,
+then use Alembic to generate migrations for your tables.
+This allows Flaschengeist to proper up- or downgrade the
+database tables if an user updates your plugin.
+
+migrations have to be provided in a directory called `migrations`
+next to your plugin. E.G.
+
+    myplugin
+        - __init__.py
+        - other/
+            - ...
+        - migrations/
+
+## Useful Hooks
+There are some predefined hooks, which might get handy for you.
+
+For more information, please refer to
+- `flaschengeist.utils.hook.HookBefore` and
+- `flaschengeist.utils.hook.HookAfter`
+"""
+
 import sqlalchemy
 import pkg_resources
 from werkzeug.datastructures import FileStorage
@@ -10,48 +36,81 @@ from flaschengeist.models.user import _Avatar, User
 from flaschengeist.models.setting import _PluginSetting
 from flaschengeist.utils.hook import HookBefore, HookAfter
 
+__all__ = [
+    "plugins_installed",
+    "plugins_loaded",
+    "before_delete_user",
+    "before_role_updated",
+    "before_update_user",
+    "after_role_updated",
+    "Plugin",
+    "AuthPlugin",
+]
+
+# Documentation hacks, see https://github.com/mitmproxy/pdoc/issues/320
 plugins_installed = HookAfter("plugins.installed")
-"""Hook decorator for when all plugins are installed
-    Possible use case would be to populate the database with some presets.
+plugins_installed.__doc__ = """Hook decorator for when all plugins are installed
 
-    Args:
-        hook_result: void (kwargs)
+Possible use case would be to populate the database with some presets.
 """
+
 plugins_loaded = HookAfter("plugins.loaded")
-"""Hook decorator for when all plugins are loaded
-    Possible use case would be to check if a specific other plugin is loaded and change own behavior
+plugins_loaded.__doc__ = """Hook decorator for when all plugins are loaded
 
-    Args:
-        app: Current flask app instance (args)
-        hook_result: void (kwargs)
+Possible use case would be to check if a specific other plugin is loaded and change own behavior
+
+Passed args:
+    - *app:* Current flask app instance (args)
 """
+
 before_role_updated = HookBefore("update_role")
-"""Hook decorator for when roles are modified
-Args:
-    role: Role object to modify
-    new_name: New name if the name was changed (None if delete)
+before_role_updated.__doc__ = """Hook decorator for when roles are modified
+    
+Passed args:
+    - *role:* `flaschengeist.models.user.Role` to modify
+    - *new_name:* New name if the name was changed (*None* if delete)
 """
+
 after_role_updated = HookAfter("update_role")
-"""Hook decorator for when roles are modified
-Args:
-    role: Role object containing the modified role
-    new_name: New name if the name was changed (None if deleted)
+after_role_updated.__doc__ = """Hook decorator for when roles are modified
+
+Passed args:
+    - *role:* modified `flaschengeist.models.user.Role`
+    - *new_name:* New name if the name was changed (*None* if deleted)
 """
+
 before_update_user = HookBefore("update_user")
-"""Hook decorator, when ever an user update is done, this is called before.
-Args:
-    user: User object
+before_update_user.__doc__ = """Hook decorator, when ever an user update is done, this is called before.
+
+Passed args:
+    - *user:* `flaschengeist.models.user.User` object
 """
+
 before_delete_user = HookBefore("delete_user")
-"""Hook decorator,this is called before an user gets deleted.
-Args:
-    user: User object
+before_delete_user.__doc__ = """Hook decorator,this is called before an user gets deleted.
+
+Passed args:
+    - *user:* `flaschengeist.models.user.User` object
 """
 
 
 class Plugin:
     """Base class for all Plugins
-    If your class uses custom models add a static property called ``models``"""
+
+    All plugins must be derived from this class.
+    There are some static properties a plugin must provide,
+    and some properties a plugin can provide if you might want
+    to use more functionality.
+
+    Required:
+        - *id*: Unique identifier of your plugin
+
+    Optional:
+        - *blueprint*: `flask.Blueprint` providing your routes
+        - *permissions*: List of your custom permissions
+        - *models*: Your models, used for API export
+        - *version*: Version of your plugin, can also be guessed by Flaschengeist
+    """
 
     blueprint = None  # You have to override
     """Override with a `flask.blueprint` if the plugin uses custom routes"""
@@ -61,14 +120,18 @@ class Plugin:
     A good style is to name the permissions with a prefix related to the plugin name,
     to prevent clashes with other plugins. E. g. instead of *delete* use *plugin_delete*.
     """
-    id = "dev.flaschengeist.plugin"  # You have to override
-    """Override with the unique ID of the plugin (Hint: FQN)"""
-    name = "plugin"  # You have to override
-    """Override with human readable name of the plugin"""
-    models = None  # You have to override
-    """Override with models module"""
-    migrations_path = None  # Override this with the location of your db migrations directory
-    """Override with path to migration files, if custome db tables are used"""
+
+    models = None
+    """Override with models module
+    
+    Used for API export, has to be a static property
+    """
+
+    version = None
+    """Override with a custom version, optional
+    
+    If not set, the version is guessed from the package / distribution
+    """
 
     def __init__(self, config=None):
         """Constructor called by create_app
@@ -233,14 +296,14 @@ class AuthPlugin(Plugin):
         """
         raise NotFound
 
-    def set_avatar(self, user: User, file: FileStorage):
+    def set_avatar(self, user, file):
         """Set the avatar for given user (if supported by auth backend)
 
         Default behavior is to use native Image objects stored on the Flaschengeist server
 
         Args:
             user: User to set the avatar for
-            file: FileStorage object uploaded by the user
+            file: `werkzeug.datastructures.FileStorage` uploaded by the user
         Raises:
             MethodNotAllowed: If not supported by Backend
             Any valid HTTP exception

flaschengeist/plugins/balance/routes.py

@@ -131,7 +131,7 @@ def get_balance(userid, current_session: Session):
 
     Route: ``/users/<userid>/balance`` | Method: ``GET``
 
-    GET-parameters: ```{from?: string, to?: string}```
+    GET-parameters: ``{from?: string, to?: string}``
 
     Args:
         userid: Userid of user to get balance from
@@ -170,7 +170,7 @@ def get_transactions(userid, current_session: Session):
 
     Route: ``/users/<userid>/balance/transactions`` | Method: ``GET``
 
-    GET-parameters: ```{from?: string, to?: string, limit?: int, offset?: int}```
+    GET-parameters: ``{from?: string, to?: string, limit?: int, offset?: int}``
 
     Args:
         userid: Userid of user to get transactions from

flaschengeist/utils/hook.py

@@ -7,6 +7,7 @@ _hooks_after = {}
 
 def Hook(function=None, id=None):
     """Hook decorator
+
     Use to decorate functions as hooks, so plugins can hook up their custom functions.
     """
     # `id` passed as `arg` not `kwarg`
@@ -38,8 +39,10 @@ def Hook(function=None, id=None):
 
 def HookBefore(id: str):
     """Decorator for functions to be called before a Hook-Function is called
+
     The hooked up function must accept the same arguments as the function hooked onto,
     as the functions are called with the same arguments.
+
     Hint: This enables you to modify the arguments!
     """
     if not id or not isinstance(id, str):
@@ -54,9 +57,18 @@ def HookBefore(id: str):
 
 def HookAfter(id: str):
     """Decorator for functions to be called after a Hook-Function is called
+
     As with the HookBefore, the hooked up function must accept the same
     arguments as the function hooked onto, but also receives a
     `hook_result` kwarg containing the result of the function.
+
+    Example:
+        ```py
+        @HookAfter("some.id")
+        def my_func(hook_result):
+            # This function is executed after the function registered with "some.id"
+            print(hook_result)  # This is the result of the function
+        ```
     """
 
     if not id or not isinstance(id, str):