Add systemd start/stop for transmission.service

pyproject.toml

@@ -1,7 +1,7 @@
 [project]
 name = "torrent-downloader"
-version = "0.1.0"
-description = "Add your description here"
+version = "0.1.1"
+description = "Web interface for searching and downloading torrents"
 authors = [
     { name = "Vladan Popovic", email = "vladanovic@gmail.com" }
 ]
@@ -12,6 +12,7 @@ dependencies = [
     "fastapi>=0.114.2",
     "jinja2>=3.1.4",
     "cinemagoer>=2023.5.1",
+    "dbus-python>=1.3.2",
 ]
 readme = "README.md"
 requires-python = ">= 3.8"

requirements-dev.lock

@@ -11,92 +11,45 @@
 
 -e file:.
 annotated-types==0.7.0
-    # via pydantic
 anyio==4.4.0
-    # via starlette
 asttokens==2.4.1
-    # via stack-data
 certifi==2024.8.30
-    # via requests
 charset-normalizer==3.3.2
-    # via requests
 cinemagoer==2023.5.1
-    # via torrent-downloader
 click==8.1.7
-    # via uvicorn
+dbus-python==1.3.2
 decorator==5.1.1
-    # via ipython
 executing==2.1.0
-    # via stack-data
 fastapi==0.114.2
-    # via torrent-downloader
 greenlet==3.1.0
-    # via sqlalchemy
 h11==0.14.0
-    # via uvicorn
 idna==3.8
-    # via anyio
-    # via requests
 ipython==8.27.0
 jedi==0.19.1
-    # via ipython
 jinja2==3.1.4
-    # via torrent-downloader
 lxml==5.3.0
-    # via cinemagoer
-    # via tpblite
 markupsafe==2.1.5
-    # via jinja2
 matplotlib-inline==0.1.7
-    # via ipython
 parso==0.8.4
-    # via jedi
 pexpect==4.9.0
-    # via ipython
 prompt-toolkit==3.0.47
-    # via ipython
 ptyprocess==0.7.0
-    # via pexpect
 pure-eval==0.2.3
-    # via stack-data
 pydantic==2.8.2
-    # via fastapi
-    # via pydantic-settings
 pydantic-core==2.20.1
-    # via pydantic
 pydantic-settings==2.4.0
-    # via torrent-downloader
 pygments==2.18.0
-    # via ipython
 python-dotenv==1.0.1
-    # via pydantic-settings
 requests==2.32.3
-    # via transmission-rpc
 six==1.16.0
-    # via asttokens
 sniffio==1.3.1
-    # via anyio
 sqlalchemy==2.0.34
-    # via cinemagoer
 stack-data==0.6.3
-    # via ipython
 starlette==0.38.5
-    # via fastapi
 tpblite==0.8.0
-    # via torrent-downloader
 traitlets==5.14.3
-    # via ipython
-    # via matplotlib-inline
 transmission-rpc==7.0.11
-    # via torrent-downloader
 typing-extensions==4.12.2
-    # via fastapi
-    # via pydantic
-    # via pydantic-core
-    # via sqlalchemy
-    # via transmission-rpc
 urllib3==2.2.2
-    # via requests
 uvicorn==0.30.6
 wcwidth==0.2.13
-    # via prompt-toolkit

requirements.lock

@@ -11,55 +11,26 @@
 
 -e file:.
 annotated-types==0.7.0
-    # via pydantic
 anyio==4.4.0
-    # via starlette
 certifi==2024.8.30
-    # via requests
 charset-normalizer==3.3.2
-    # via requests
 cinemagoer==2023.5.1
-    # via torrent-downloader
+dbus-python==1.3.2
 fastapi==0.114.2
-    # via torrent-downloader
 greenlet==3.1.0
-    # via sqlalchemy
 idna==3.8
-    # via anyio
-    # via requests
 jinja2==3.1.4
-    # via torrent-downloader
 lxml==5.3.0
-    # via cinemagoer
-    # via tpblite
 markupsafe==2.1.5
-    # via jinja2
 pydantic==2.8.2
-    # via fastapi
-    # via pydantic-settings
 pydantic-core==2.20.1
-    # via pydantic
 pydantic-settings==2.4.0
-    # via torrent-downloader
 python-dotenv==1.0.1
-    # via pydantic-settings
 requests==2.32.3
-    # via transmission-rpc
 sniffio==1.3.1
-    # via anyio
 sqlalchemy==2.0.34
-    # via cinemagoer
 starlette==0.38.5
-    # via fastapi
 tpblite==0.8.0
-    # via torrent-downloader
 transmission-rpc==7.0.11
-    # via torrent-downloader
 typing-extensions==4.12.2
-    # via fastapi
-    # via pydantic
-    # via pydantic-core
-    # via sqlalchemy
-    # via transmission-rpc
 urllib3==2.2.2
-    # via requests

src/torrent_downloader/app.py

@@ -3,12 +3,13 @@ import urllib.parse
 
 import transmission_rpc
 from fastapi import Depends, FastAPI, Request
-from fastapi.responses import HTMLResponse, RedirectResponse
+from fastapi.responses import HTMLResponse
 from fastapi.staticfiles import StaticFiles
 from fastapi.templating import Jinja2Templates
 
 from torrent_downloader.client import TorrentDownloader
 from torrent_downloader.imdb import search_string_from_url
+from torrent_downloader.systemd import Systemd
 
 app = FastAPI()
 app.mount("/static", StaticFiles(directory="static"), name="static")
@@ -19,8 +20,16 @@ def get_downloader() -> TorrentDownloader:
     return TorrentDownloader()
 
 
-def get_active_torrents(downloader=get_downloader()) -> list[transmission_rpc.Torrent]:
-    return [t for t in downloader.get_active_torrents() if t.format_eta() != "not available"]
+def get_systemd() -> Systemd:
+    return Systemd()
+
+
+def get_active_torrents(
+    downloader=get_downloader(),
+) -> list[transmission_rpc.Torrent]:
+    return [
+        t for t in downloader.get_active_torrents() if t.format_eta().lower() != "not available"
+    ]
 
 
 def hx(func):
@@ -41,13 +50,8 @@ def hx(func):
 
 
 @app.get("/")
-async def index(_: Request):
-    return RedirectResponse("/search")
-
-
-@app.get("/search", response_class=HTMLResponse)
 @hx
-async def search_for_torrents(request: Request):
+async def index(request: Request):
     return templates.TemplateResponse(request=request, name="search.html")
 
 
@@ -70,7 +74,9 @@ async def download(request: Request, downloader=Depends(get_downloader)):
     downloader.download_magnet(magnet)
     active = downloader.get_active_torrents()
     return templates.TemplateResponse(
-        request=request, name="active_torrents.html", context={"torrents": active}
+        request=request,
+        name="active_torrents.html",
+        context={"torrents": active},
     )
 
 
@@ -78,5 +84,34 @@ async def download(request: Request, downloader=Depends(get_downloader)):
 @hx
 async def active(request: Request, active=Depends(get_active_torrents)):
     return templates.TemplateResponse(
-        request=request, name="active_torrents.html", context={"torrents": active}
+        request=request,
+        name="active_torrents.html",
+        context={"torrents": active},
+    )
+
+
+@app.get("/transmission", response_class=HTMLResponse)
+@hx
+async def transmission_status(request: Request, systemd=Depends(get_systemd)):
+    return templates.TemplateResponse(
+        request=request,
+        name="transmission.html",
+        context={"is_active": systemd.service_is_active("transmission")},
+    )
+
+
+@app.post("/transmission/{action}", response_class=HTMLResponse)
+@hx
+async def transmission_start(request: Request, action: str, systemd=Depends(get_systemd)):
+    match action:
+        case "start":
+            systemd.service_start("transmission")
+        case "stop":
+            systemd.service_stop("transmission")
+        case _:
+            return 404
+    return templates.TemplateResponse(
+        request=request,
+        name="transmission.html",
+        context={"is_active": systemd.service_is_active("transmission")},
     )

src/torrent_downloader/systemd.py

@@ -0,0 +1,24 @@
+import dbus
+
+
+class Systemd:
+    def __init__(self):
+        self.bus = dbus.SessionBus()
+        self.systemd = self.bus.get_object(
+            "org.freedesktop.systemd1",
+            "/org/freedesktop/systemd1",
+        )
+        self.manager = dbus.Interface(self.systemd, "org.freedesktop.systemd1.Manager")
+
+    def service_start(self, service: str):
+        return self.manager.StartUnit(f"{service}.service", "replace")
+
+    def service_stop(self, service: str):
+        return self.manager.StopUnit(f"{service}.service", "replace")
+
+    def service_is_active(self, service: str):
+        try:
+            self.manager.GetUnit(service)
+            return True
+        except dbus.exceptions.DBusException:
+            return False

templates/index.html

@@ -5,7 +5,7 @@
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <title>Search and download torrents directly to mediacenter</title>
   <script src="https://unpkg.com/htmx.org@2.0.0" integrity="sha384-wS5l5IKJBvK6sPTKa2WZ1js3d947pvWXbPJ1OmWfEuxLgeHcEbjUUA5i9V5ZkpCw" crossorigin="anonymous"></script>
-  <link href="{{ url_for('static', path='/style.css') }}" rel="stylesheet">
+  <link href="/static/style.css" rel="stylesheet">
 </head>
 <body>
     <menu>

templates/transmission.html

@@ -0,0 +1,9 @@
+{% block content %}
+{% if is_active %}
+<h3>Transmission is running!</h3>
+<button hx-post="/transmission/stop" hx-target="#content">Stop now!</button>
+{% else %}
+<h3>Transmission is stopped!</h3>
+<button hx-post="/transmission/start" hx-target="#content">Start now!</button>
+{% endif %}
+{% endblock %}