Use query parameters for year, day and mode. Handle file stream message.

backend/src/holt59/aoc/app.py

@@ -6,7 +6,8 @@ import subprocess
 from pathlib import Path
 from typing import Any, Literal, TypeAlias
 
-from fastapi import FastAPI, Form
+from fastapi import FastAPI, Form, HTTPException
+from fastapi.responses import FileResponse
 from sse_starlette import EventSourceResponse
 
 DataMode: TypeAlias = Literal["holt59", "tests"]
@@ -14,6 +15,7 @@ DataMode: TypeAlias = Literal["holt59", "tests"]
 LOGGER = logging.getLogger("uvicorn.info")
 
 GIT_AOC_PATH = Path("/code")
+AOC_FILES_PATH = Path("/files")
 
 
 def update_repository():
@@ -54,6 +56,16 @@ async def data(year: int, day: int, mode: DataMode = "tests"):
     return {"content": read_test_file(year, day, mode)}
 
 
+@app.get("/file")
+async def file(name: str):
+    path = AOC_FILES_PATH.joinpath(name).resolve()
+
+    if path.parent != AOC_FILES_PATH:
+        raise HTTPException(403)
+
+    return FileResponse(path)
+
+
 @app.post("/submit-sse")
 async def submit_sse(year: int = Form(), day: int = Form(), input: str = Form()):
     data = input.rstrip().replace("\r\n", "\n")
@@ -62,6 +74,8 @@ async def submit_sse(year: int = Form(), day: int = Form(), input: str = Form())
         "holt59-aoc",
         "--stdin",
         "--api",
+        "--output",
+        AOC_FILES_PATH,
         "--year",
         str(year),
         str(day),