"""
The filehelp-system allows for defining help files outside of the game. These
will be treated as non-command help entries and displayed in the same way as
help entries created using the `sethelp` default command. After changing an
entry on-disk you need to reload the server to have the change show in-game.
An filehelp file is a regular python module with dicts representing each help
entry. If a list `HELP_ENTRY_DICTS` is found in the module, this should be a list of
dicts. Otherwise *all* top-level dicts in the module will be assumed to be a
help-entry dict.
Each help-entry dict is on the form
::
{'key': <str>,
'text': <str>,
'category': <str>, # optional, otherwise settings.DEFAULT_HELP_CATEGORY
'aliases': <list>, # optional
'locks': <str>} # optional, use access-type 'view'. Default is view:all()
The `text`` should be formatted on the same form as other help entry-texts and
can contain ``# subtopics`` as normal.
New help-entry modules are added to the system by providing the python-path to
the module to `settings.FILE_HELP_ENTRY_MODULES`. Note that if same-key entries are
added, entries in latter modules will override that of earlier ones. Use
`settings.DEFAULT_HELP_CATEGORY`` to customize what category is used if
not set explicitly.
An example of the contents of a module:
::
help_entry1 = {
"key": "The Gods", # case-insensitive, also partial-matching ('gods') works
"aliases": ['pantheon', 'religion'],
"category": "Lore",
"locks": "view:all()", # this is optional unless restricting access
"text": '''
The gods formed the world ...
# Subtopics
## Pantheon
...
### God of love
...
### God of war
...
'''
}
HELP_ENTRY_DICTS = [
help_entry1,
...
]
----
"""
from dataclasses import dataclass
from django.conf import settings
from django.urls import reverse
from django.utils.text import slugify
from evennia.locks.lockhandler import LockHandler
from evennia.utils import logger
from evennia.utils.utils import (
all_from_module,
lazy_property,
make_iter,
variable_from_module,
)
_DEFAULT_HELP_CATEGORY = settings.DEFAULT_HELP_CATEGORY
[docs]@dataclass
class FileHelpEntry:
"""
Represents a help entry read from file. This mimics the api of the
database-bound HelpEntry so that they can be used interchangeably in the
help command.
"""
key: str
aliases: list
help_category: str
entrytext: str
lock_storage: str
@property
def search_index_entry(self):
"""
Property for easily retaining a search index entry for this object.
"""
return {
"key": self.key,
"aliases": " ".join(self.aliases),
"category": self.help_category,
"no_prefix": "",
"tags": "",
"locks": "",
"text": self.entrytext,
}
def __str__(self):
return self.key
def __repr__(self):
return f"<FileHelpEntry {self.key}>"
[docs] @lazy_property
def locks(self):
return LockHandler(self)
[docs] def web_get_detail_url(self):
"""
Returns the URI path for a View that allows users to view details for
this object.
ex. Oscar (Character) = '/characters/oscar/1/'
For this to work, the developer must have defined a named view somewhere
in urls.py that follows the format 'modelname-action', so in this case
a named view of 'character-detail' would be referenced by this method.
ex.
::
url(r'characters/(?P<slug>[\w\d\-]+)/(?P<pk>[0-9]+)/$',
CharDetailView.as_view(), name='character-detail')
If no View has been created and defined in urls.py, returns an
HTML anchor.
This method is naive and simply returns a path. Securing access to
the actual view and limiting who can view this object is the developer's
responsibility.
Returns:
path (str): URI path to object detail page, if defined.
"""
try:
return reverse(
"help-entry-detail",
kwargs={"category": slugify(self.help_category), "topic": slugify(self.key)},
)
except Exception:
return "#"
[docs] def web_get_admin_url(self):
"""
Returns the URI path for the Django Admin page for this object.
ex. Account#1 = '/admin/accounts/accountdb/1/change/'
Returns:
path (str): URI path to Django Admin page for object.
"""
return False
[docs] def access(self, accessing_obj, access_type="view", default=True):
"""
Determines if another object has permission to access this help entry.
Args:
accessing_obj (Object or Account): Entity trying to access this one.
access_type (str): type of access sought.
default (bool): What to return if no lock of `access_type` was found.
"""
return self.locks.check(accessing_obj, access_type=access_type, default=default)
[docs]class FileHelpStorageHandler:
"""
This reads and stores help entries for quick access. By default
it reads modules from `settings.FILE_HELP_ENTRY_MODULES`.
Note that this is not meant to any searching/lookup - that is all handled
by the help command.
"""
[docs] def __init__(self, help_file_modules=settings.FILE_HELP_ENTRY_MODULES):
"""
Initialize the storage.
"""
self.help_file_modules = [str(part).strip() for part in make_iter(help_file_modules)]
self.help_entries = []
self.help_entries_dict = {}
self.load()
[docs] def load(self):
"""
Load/reload file-based help-entries from file.
"""
loaded_help_dicts = []
for module_or_path in self.help_file_modules:
help_dict_list = variable_from_module(module_or_path, variable="HELP_ENTRY_DICTS")
if not help_dict_list:
help_dict_list = [
dct for dct in all_from_module(module_or_path).values() if isinstance(dct, dict)
]
if help_dict_list:
loaded_help_dicts.extend(help_dict_list)
else:
logger.log_err(f"Could not find file-help module {module_or_path} (skipping).")
# validate and parse dicts into FileEntryHelp objects and make sure they are unique-by-key
# by letting latter added ones override earlier ones.
unique_help_entries = {}
for dct in loaded_help_dicts:
key = dct.get("key").lower().strip()
category = dct.get("category", _DEFAULT_HELP_CATEGORY).strip()
aliases = list(dct.get("aliases", []))
entrytext = dct.get("text", "")
locks = dct.get("locks", "")
if not key and entrytext:
logger.error(f"Cannot load file-help-entry (missing key or text): {dct}")
continue
unique_help_entries[key] = FileHelpEntry(
key=key,
help_category=category,
aliases=aliases,
lock_storage=locks,
entrytext=entrytext,
)
self.help_entries_dict = unique_help_entries
self.help_entries = list(unique_help_entries.values())
[docs] def all(self, return_dict=False):
"""
Get all help entries.
Args:
return_dict (bool): Return a dict ``{key: FileHelpEntry,...}``. Otherwise,
return a list of ``FileHelpEntry`.
Returns:
dict or list: Depending on the setting of ``return_dict``.
"""
return self.help_entries_dict if return_dict else self.help_entries
# singleton to hold the loaded help entries
FILE_HELP_ENTRIES = FileHelpStorageHandler()
