podcast-generator/main.py
Jake Walker bbfbeddc55
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add podcast images
2025-01-13 13:45:52 +00:00

361 lines
11 KiB
Python

import urllib.parse
import uuid
from datetime import timedelta
from pathlib import Path
from typing import Annotated, Optional
import podgen
import structlog
from fastapi import FastAPI, Form, HTTPException, Request, Response, UploadFile
from fastapi.middleware.cors import CORSMiddleware
from fastapi.responses import FileResponse, JSONResponse, RedirectResponse
from fastapi.templating import Jinja2Templates
from PIL import Image
import data
from process import AudioProcessor
from settings import settings
log = structlog.get_logger()
app = FastAPI()
app.add_middleware(
CORSMiddleware, allow_origins=["*"], allow_methods=["*"], allow_headers=["*"]
)
templates = Jinja2Templates(directory="templates")
audio_processor = AudioProcessor()
audio_processor.start_processing()
@app.get("/admin")
def admin_list_feeds(request: Request):
repo = data.load_repository()
return templates.TemplateResponse(
request=request,
name="admin_feeds.html.j2",
context={"repo": repo},
)
@app.get("/admin/{feed_id}")
def admin_list_feed(request: Request, feed_id: str):
repo = data.load_repository()
feed = next(
(podcast for id, podcast in repo.podcasts.items() if id == feed_id), None
)
if feed is None:
raise HTTPException(status_code=404, detail="Podcast not found")
return templates.TemplateResponse(
request=request,
name="admin_feed.html.j2",
context={
"feed": feed,
"id": feed_id,
"feed_uri": urllib.parse.urljoin(str(request.base_url), f"{feed_id}.xml"),
},
)
def finish_processing(
feed_id: str,
episode: data.Episode,
duration: Optional[float],
file_hash: str,
file_size: int,
):
log.info("Saving episode %s", episode.id)
repo = data.load_repository()
episode.duration = duration
episode.file_hash = file_hash
episode.file_size = file_size
repo.podcasts[feed_id].episodes.insert(0, episode)
data.save_repository(repo)
@app.post("/admin/{feed_id}/upload")
async def admin_upload_episode(request: Request, feed_id: str, file: UploadFile):
file_id = request.headers.get("uploader-file-id")
chunks_total = int(request.headers.get("uploader-chunks-total"))
chunk_number = int(request.headers.get("uploader-chunk-number"))
episode_name = request.headers.get("name")
if file_id is None or episode_name is None:
raise HTTPException(400, "Invalid request")
file_id = "".join(c for c in file_id if c.isalnum()).strip()
repo = data.load_repository()
if feed_id not in repo.podcasts:
raise HTTPException(status_code=404, detail="Podcast not found")
is_last = (chunk_number + 1) == chunks_total
file_name = f"{file_id}_{chunk_number}"
settings.uploads_directory.mkdir(parents=True, exist_ok=True)
with open(settings.uploads_directory / file_name, "wb") as buf:
buf.write(await file.read())
if is_last:
episode = data.Episode(
name=Path(urllib.parse.unquote(episode_name)).stem,
file_size=0,
file_hash="",
)
upload_path = settings.uploads_directory / episode.id
with open(upload_path, "wb") as buf:
chunk = 0
while chunk < chunks_total:
chunk_path = settings.uploads_directory / f"{file_id}_{chunk}"
with open(chunk_path, "rb") as infile:
buf.write(infile.read())
infile.close()
chunk_path.unlink()
chunk += 1
audio_processor.add_file(
upload_path,
settings.directory / f"{episode.id}.m4a",
lambda duration, file_hash, file_size: finish_processing(
feed_id, episode, duration, file_hash, file_size
),
)
return JSONResponse({"message": "File Uploaded"}, status_code=200)
return JSONResponse({"message": "Chunk Uploaded"}, status_code=200)
@app.get("/admin/{feed_id}/{episode_id}/delete")
def admin_delete_episode(feed_id: str, episode_id: str):
repo = data.load_repository()
if feed_id not in repo.podcasts:
raise HTTPException(status_code=404, detail="Podcast not found")
(settings.directory / f"{episode_id}.m4a").unlink()
new_feed = repo.podcasts[feed_id]
new_feed.episodes = [
episode for episode in new_feed.episodes if episode.id != episode_id
]
repo.podcasts[feed_id] = new_feed
data.save_repository(repo)
return RedirectResponse(f"/admin/{feed_id}", status_code=303)
@app.get("/admin/{feed_id}/{episode_id}/edit")
def admin_edit_episode(request: Request, feed_id: str, episode_id: str):
repo = data.load_repository()
if feed_id not in repo.podcasts:
raise HTTPException(status_code=404, detail="Podcast not found")
episode = next(
(
episode
for episode in repo.podcasts[feed_id].episodes
if episode.id == episode_id
),
None,
)
if episode is None:
raise HTTPException(status_code=404, detail="Episode not found")
return templates.TemplateResponse(
request=request,
name="admin_episode_edit.html.j2",
context={"episode": episode},
)
@app.post("/admin/{feed_id}/{episode_id}/edit")
def admin_edit_episode_post(
feed_id: str,
episode_id: str,
name: Annotated[str, Form()],
description: Annotated[str, Form()],
):
repo = data.load_repository()
if feed_id not in repo.podcasts:
raise HTTPException(status_code=404, detail="Podcast not found")
episode_idx = next(
(
idx
for idx, episode in enumerate(repo.podcasts[feed_id].episodes)
if episode.id == episode_id
),
None,
)
if episode_idx is None:
raise HTTPException(status_code=404, detail="Episode not found")
if name.strip() != "":
repo.podcasts[feed_id].episodes[episode_idx].name = name
if description.strip() != "":
repo.podcasts[feed_id].episodes[episode_idx].description = description
else:
repo.podcasts[feed_id].episodes[episode_idx].description = None
data.save_repository(repo)
return RedirectResponse(f"/admin/{feed_id}", status_code=303)
@app.get("/admin/{feed_id}/edit")
def admin_edit_feed(request: Request, feed_id: str):
repo = data.load_repository()
if feed_id not in repo.podcasts:
raise HTTPException(status_code=404, detail="Podcast not found")
return templates.TemplateResponse(
request=request,
name="admin_feed_edit.html.j2",
context={"feed": repo.podcasts[feed_id]},
)
@app.post("/admin/{feed_id}/edit")
def admin_edit_feed_post(
feed_id: str,
name: Annotated[str, Form()],
description: Annotated[str, Form()],
image: Optional[UploadFile] = None,
):
repo = data.load_repository()
if feed_id not in repo.podcasts:
raise HTTPException(status_code=404, detail="Podcast not found")
new_feed = repo.podcasts[feed_id]
if name.strip() != "":
new_feed.name = name
new_feed.description = description
if image is not None and image.size > 0:
if not (image.filename.endswith(".jpg") or image.filename.endswith(".png")):
raise HTTPException(
status_code=400,
detail="The uploaded podcast image must be a jpg or png",
)
im = Image.open(image.file)
if im.size[0] != im.size[1] or im.size[0] < 1400 or im.size[0] > 3000:
raise HTTPException(
status_code=400,
detail="The uploaded podcast image must be square and between 1400x1400px and 3000x3000px in size",
)
if im.mode != "RGB":
raise HTTPException(
status_code=400,
detail="The uploaded podcast image must be in RGB format",
)
if new_feed.image_filename is not None:
(settings.directory / new_feed.image_filename).unlink(missing_ok=True)
filename = f"img_{uuid.uuid4()}" + Path(image.filename).suffix
im.save(settings.directory / filename)
new_feed.image_filename = filename
repo.podcasts[feed_id] = new_feed
data.save_repository(repo)
return RedirectResponse(f"/admin/{feed_id}", status_code=303)
@app.get("/{feed_id}.xml")
def get_feed(request: Request, feed_id: str):
repo = data.load_repository()
feed = next(
(podcast for id, podcast in repo.podcasts.items() if id == feed_id), None
)
if feed is None:
raise HTTPException(status_code=404, detail="Podcast not found")
podcast = podgen.Podcast(
name=feed.name,
description=feed.description,
image=urllib.parse.urljoin(
str(request.base_url),
f"/{feed_id}/{feed.image_filename}",
)
if feed.image_filename is not None
else None,
website=urllib.parse.urljoin(str(request.base_url), feed_id),
explicit=feed.explicit,
feed_url=str(request.url),
)
for episode in feed.episodes:
podcast.add_episode(
podgen.Episode(
id=episode.id,
title=episode.name,
publication_date=episode.publish_date,
media=podgen.Media(
urllib.parse.urljoin(
str(request.base_url), f"{feed_id}/{episode.id}.m4a"
),
episode.file_size,
duration=timedelta(seconds=episode.duration)
if episode.duration is not None
else None,
),
long_summary=episode.description,
)
)
return Response(content=podcast.rss_str(), media_type="application/xml")
@app.get("/{feed_id}/{filename}")
def get_episode_or_cover(feed_id: str, filename: str):
repo = data.load_repository()
feed = next(
(podcast for id, podcast in repo.podcasts.items() if id == feed_id), None
)
if feed is None:
raise HTTPException(status_code=404, detail="Podcast not found")
if filename.endswith(".m4a"):
episode = next(
(
episode
for episode in feed.episodes
if episode.id == filename.removesuffix(".m4a")
),
None,
)
if episode is None:
raise HTTPException(status_code=404, detail="Episode not found")
return FileResponse(settings.directory / f"{episode.id}.m4a")
elif (
filename.endswith(".jpg") or filename.endswith(".png")
) and filename == feed.image_filename:
return FileResponse(settings.directory / feed.image_filename)
return HTTPException(status_code=404, detail="File not found")