lnbits-legend/lnbits/helpers.py
2023-01-18 17:38:36 +02:00

280 lines
8.6 KiB
Python

import glob
import json
import os
from http import HTTPStatus
from typing import Any, List, NamedTuple, Optional
import jinja2
import shortuuid # type: ignore
from fastapi.responses import JSONResponse
from starlette.types import ASGIApp, Receive, Scope, Send
from lnbits.jinja2_templating import Jinja2Templates
from lnbits.requestvars import g
from lnbits.settings import settings
class Extension(NamedTuple):
code: str
is_valid: bool
is_admin_only: bool
name: Optional[str] = None
short_description: Optional[str] = None
tile: Optional[str] = None
contributors: Optional[List[str]] = None
hidden: bool = False
migration_module: Optional[str] = None
db_name: Optional[str] = None
hash: Optional[str] = ""
@property
def module_name(self):
return (
f"lnbits.extensions.{self.code}"
if self.hash == ""
else f"lnbits.upgrades.{self.code}-{self.hash}.{self.code}"
)
class InstallableExtension(NamedTuple):
id: str
name: str
archive: str
hash: str
short_description: Optional[str] = None
details: Optional[str] = None
icon: Optional[str] = None
dependencies: List[str] = []
is_admin_only: bool = False
version: Optional[int] = 0
class ExtensionManager:
def __init__(self, include_disabled_exts=False):
self._disabled: List[str] = (
[] if include_disabled_exts else settings.lnbits_disabled_extensions
)
self._admin_only: List[str] = settings.lnbits_admin_extensions
self._extension_folders: List[str] = [
x[1] for x in os.walk(os.path.join(settings.lnbits_path, "extensions"))
][0]
@property
def extensions(self) -> List[Extension]:
output: List[Extension] = []
if "all" in self._disabled:
return output
for extension in [
ext for ext in self._extension_folders if ext not in self._disabled
]:
try:
with open(
os.path.join(
settings.lnbits_path, "extensions", extension, "config.json"
)
) as json_file:
config = json.load(json_file)
is_valid = True
is_admin_only = True if extension in self._admin_only else False
except Exception:
config = {}
is_valid = False
is_admin_only = False
output.append(
Extension(
extension,
is_valid,
is_admin_only,
config.get("name"),
config.get("short_description"),
config.get("tile"),
config.get("contributors"),
config.get("hidden") or False,
config.get("migration_module"),
config.get("db_name"),
)
)
return output
class InstalledExtensionMiddleware:
def __init__(self, app: ASGIApp) -> None:
self.app = app
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
path_elements = scope["path"].split("/")
if len(path_elements) > 2:
_, path_name, path_type, *rest = path_elements
else:
_, path_name = path_elements
path_type = None
# block path for all users if the extension is disabled
if path_name in settings.lnbits_disabled_extensions:
response = JSONResponse(
status_code=HTTPStatus.NOT_FOUND,
content={"detail": f"Extension '{path_name}' disabled"},
)
await response(scope, receive, send)
return
# re-route API trafic if the extension has been upgraded
if path_type == "api":
upgraded_extensions = list(
filter(
lambda ext: ext.endswith(f"/{path_name}"),
settings.lnbits_upgraded_extensions,
)
)
if len(upgraded_extensions) != 0:
upgrade_path = upgraded_extensions[0]
tail = "/".join(rest)
scope["path"] = f"/upgrades/{upgrade_path}/{path_type}/{tail}"
await self.app(scope, receive, send)
def get_valid_extensions(include_disabled_exts=False) -> List[Extension]:
return [
extension
for extension in ExtensionManager(include_disabled_exts).extensions
if extension.is_valid
]
def urlsafe_short_hash() -> str:
return shortuuid.uuid()
def get_js_vendored(prefer_minified: bool = False) -> List[str]:
paths = get_vendored(".js", prefer_minified)
def sorter(key: str):
if "moment@" in key:
return 1
if "vue@" in key:
return 2
if "vue-router@" in key:
return 3
if "polyfills" in key:
return 4
return 9
return sorted(paths, key=sorter)
def get_css_vendored(prefer_minified: bool = False) -> List[str]:
paths = get_vendored(".css", prefer_minified)
def sorter(key: str):
if "quasar@" in key:
return 1
if "vue@" in key:
return 2
if "chart.js@" in key:
return 100
return 9
return sorted(paths, key=sorter)
def get_vendored(ext: str, prefer_minified: bool = False) -> List[str]:
paths: List[str] = []
for path in glob.glob(
os.path.join(settings.lnbits_path, "static/vendor/**"), recursive=True
):
if path.endswith(".min" + ext):
# path is minified
unminified = path.replace(".min" + ext, ext)
if prefer_minified:
paths.append(path)
if unminified in paths:
paths.remove(unminified)
elif unminified not in paths:
paths.append(path)
elif path.endswith(ext):
# path is not minified
minified = path.replace(ext, ".min" + ext)
if not prefer_minified:
paths.append(path)
if minified in paths:
paths.remove(minified)
elif minified not in paths:
paths.append(path)
return sorted(paths)
def url_for_vendored(abspath: str) -> str:
return "/" + os.path.relpath(abspath, settings.lnbits_path)
def url_for(endpoint: str, external: Optional[bool] = False, **params: Any) -> str:
base = g().base_url if external else ""
url_params = "?"
for key in params:
url_params += f"{key}={params[key]}&"
url = f"{base}{endpoint}{url_params}"
return url
def template_renderer(additional_folders: List = []) -> Jinja2Templates:
t = Jinja2Templates(
loader=jinja2.FileSystemLoader(
["lnbits/templates", "lnbits/core/templates", *additional_folders]
)
)
if settings.lnbits_ad_space_enabled:
t.env.globals["AD_SPACE"] = settings.lnbits_ad_space.split(",")
t.env.globals["AD_SPACE_TITLE"] = settings.lnbits_ad_space_title
t.env.globals["HIDE_API"] = settings.lnbits_hide_api
t.env.globals["SITE_TITLE"] = settings.lnbits_site_title
t.env.globals["LNBITS_DENOMINATION"] = settings.lnbits_denomination
t.env.globals["SITE_TAGLINE"] = settings.lnbits_site_tagline
t.env.globals["SITE_DESCRIPTION"] = settings.lnbits_site_description
t.env.globals["LNBITS_THEME_OPTIONS"] = settings.lnbits_theme_options
t.env.globals["LNBITS_VERSION"] = settings.lnbits_commit
t.env.globals["EXTENSIONS"] = get_valid_extensions()
if settings.lnbits_custom_logo:
t.env.globals["USE_CUSTOM_LOGO"] = settings.lnbits_custom_logo
if settings.debug:
t.env.globals["VENDORED_JS"] = map(url_for_vendored, get_js_vendored())
t.env.globals["VENDORED_CSS"] = map(url_for_vendored, get_css_vendored())
else:
t.env.globals["VENDORED_JS"] = ["/static/bundle.js"]
t.env.globals["VENDORED_CSS"] = ["/static/bundle.css"]
return t
def get_current_extension_name() -> str:
"""
Returns the name of the extension that calls this method.
"""
import inspect
import json
import os
callee_filepath = inspect.stack()[1].filename
callee_dirname, callee_filename = os.path.split(callee_filepath)
path = os.path.normpath(callee_dirname)
extension_director_name = path.split(os.sep)[-1]
try:
config_path = os.path.join(callee_dirname, "config.json")
with open(config_path) as json_file:
config = json.load(json_file)
ext_name = config["name"]
except:
ext_name = extension_director_name
return ext_name