Add FastAPI backend and React frontend subprojects

Backend:
- FastAPI app with 17 REST endpoints covering dashboard, monitoring,
  media index, file browser, and jobs
- Reuses existing clients/domain/services unchanged
- pydantic-settings config, dependency injection, CORS setup
- Auto-generated OpenAPI docs at /docs

Frontend:
- Vite + React + TypeScript SPA
- @tanstack/react-query for data fetching with polling
- ag-grid-react for media table and file browser
- recharts for monitoring charts
- Tailwind CSS styling
- 4 pages: Dashboard, Monitoring, Media, File Browser
- Typed API client matching all backend endpoints

Also:
- docs/MIGRATION_PLAN.md with full architecture plan
- Updated .gitignore for both subprojects
- Streamlit app preserved for now (can coexist)
This commit is contained in:
2026-04-30 21:40:18 +02:00
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"""Jellyfin HTTP API client.
This module is deliberately independent from Streamlit. It wraps only the API
calls the app currently needs and returns plain Python dictionaries/lists so a
future FastAPI/React frontend can reuse the same client.
"""
from __future__ import annotations
from typing import Any
import requests
# Jellyfin validates Fields against its ItemFields enum. Keep this list to
# documented/commonly supported optional fields; invalid names cause 400s.
DEFAULT_FIELDS = ",".join(
[
"DateCreated",
"Genres",
"MediaSources",
"Overview",
"Path",
"People",
"PremiereDate",
"ProviderIds",
"Tags",
]
)
class JellyfinClient:
"""Small wrapper around the Jellyfin/Emby-compatible HTTP API."""
def __init__(self, base_url: str, api_key: str, timeout: int = 30):
if not base_url:
raise ValueError("Jellyfin URL is required")
if not api_key:
raise ValueError("Jellyfin API key is required")
# Use the server root, not the web UI path. Users often paste
# https://host/web; API endpoints live at https://host/...
self.base_url = base_url.rstrip("/")
if self.base_url.endswith("/web"):
self.base_url = self.base_url[:-4]
self.api_key = api_key
self.timeout = timeout
self.session = requests.Session()
self.session.headers.update(
{
"X-Emby-Token": api_key,
"Accept": "application/json",
"X-Emby-Authorization": 'MediaBrowser Client="MediaLibraryViewer", Device="Streamlit", DeviceId="streamlit", Version="0.1"',
}
)
def get(self, path: str, **params: Any) -> dict[str, Any]:
"""GET a Jellyfin endpoint and include useful response text on errors."""
clean_params = {k: v for k, v in params.items() if v is not None and v != ""}
response = self.session.get(
f"{self.base_url}{path}", params=clean_params, timeout=self.timeout
)
try:
response.raise_for_status()
except requests.HTTPError as exc:
detail = response.text[:500]
raise requests.HTTPError(
f"{response.status_code} for {response.url}: {detail}",
response=response,
) from exc
return response.json()
def users(self) -> list[dict[str, Any]]:
"""List users visible to this API key.
Jellyfin API keys are server-level tokens, not user session tokens, so
/Users/Me often fails with API-key auth. The user id selected here is
then used for user-scoped library endpoints.
"""
return self.get("/Users")
def libraries(self, user_id: str) -> list[dict[str, Any]]:
"""Return top-level library views visible to the selected Jellyfin user."""
return self.get(f"/Users/{user_id}/Views").get("Items", [])
def items(
self,
user_id: str,
parent_id: str | None = None,
start_index: int = 0,
limit: int = 50,
search: str | None = None,
include_item_types: str | None = None,
recursive: bool = True,
sort_by: str = "SortName",
sort_order: str = "Ascending",
) -> dict[str, Any]:
"""Return a paginated item list for a user/library.
This is used by both the visual library browser and the media-index
builder. Keep arguments close to Jellyfin's own query parameters so the
service layer can request server-side pagination and basic sorting.
"""
return self.get(
f"/Users/{user_id}/Items",
ParentId=parent_id,
StartIndex=start_index,
Limit=limit,
SearchTerm=search,
IncludeItemTypes=include_item_types,
Recursive=str(recursive).lower(),
Fields=DEFAULT_FIELDS,
SortBy=sort_by,
SortOrder=sort_order,
)
def item_count(self, user_id: str, include_item_types: str, parent_id: str | None = None) -> int:
"""Return a count using Jellyfin's TotalRecordCount without fetching rows."""
response = self.get(
f"/Users/{user_id}/Items",
ParentId=parent_id,
Recursive="true",
IncludeItemTypes=include_item_types,
Limit=0,
)
return int(response.get("TotalRecordCount", 0))
def media_counts(self, user_id: str) -> dict[str, int]:
"""Return dashboard-level counts for the main media types."""
return {
"movies": self.item_count(user_id, "Movie"),
"series": self.item_count(user_id, "Series"),
"episodes": self.item_count(user_id, "Episode"),
}
def library_item_counts(self, user_id: str, libraries: list[dict[str, Any]]) -> list[dict[str, Any]]:
"""Return per-library item counts broken down by type for the dashboard."""
results = []
for lib in libraries:
lib_id = lib.get("Id")
lib_name = lib.get("Name", "Unknown")
lib_type = lib.get("CollectionType", "")
if not lib_id:
continue
movies = self.item_count(user_id, "Movie", parent_id=lib_id)
series = self.item_count(user_id, "Series", parent_id=lib_id)
episodes = self.item_count(user_id, "Episode", parent_id=lib_id)
total = self.item_count(user_id, "Movie,Episode,Video,Audio,Series", parent_id=lib_id)
results.append({
"library": lib_name,
"type": lib_type,
"movies": movies,
"series": series,
"episodes": episodes,
"total": total,
})
return results
def active_sessions(self, active_within_seconds: int = 300) -> list[dict[str, Any]]:
"""Return currently active sessions that have a now-playing item."""
payload = self.get("/Sessions", ActiveWithinSeconds=active_within_seconds)
sessions = payload if isinstance(payload, list) else []
return [session for session in sessions if session.get("NowPlayingItem")]
def image_url(self, item_id: str, image_type: str = "Primary") -> str:
"""Build an authenticated image URL suitable for st.image/browser use."""
return f"{self.base_url}/Items/{item_id}/Images/{image_type}?api_key={self.api_key}"