from typing import Union, Annotated
import uvicorn

from fastapi import FastAPI, File, UploadFile, Form, Response, status

import os
import magic

app = FastAPI()


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{version}/{name}/{file}")
def read_item(version: str, name: str, file: str = 'index.js'):
    mime = magic.Magic(mime=True)
    file_path = f"packages/{name}/{version}/{file}"
    file_mime = mime.from_file(file_path)
    if os.path.exists(file_path):
        with open(file_path, 'rb') as f:
            return Response(content=f.read(), media_type=file_mime)

    return status.HTTP_404_NOT_FOUND


@app.post("/files/")
async def create_file(file: Annotated[bytes | None, File()] = None):
    if not file:
        return {"message": "No file sent"}
    else:
        return {"file_size": len(file)}


@app.post("/uploadfile/")
async def create_upload_file(file: UploadFile | None, package: Annotated[str, Form()], version: Annotated[str, Form()], filename: Annotated[str, Form()]):
    try:
        contents = file.file.read()
        dir_file = "packages/{package}/{version}".format(package=package, version=version)
        if not os.path.exists(dir_file):
            os.makedirs(dir_file)
        with open(f"{dir_file}/{filename}", 'wb') as f:
            f.write(contents)
    except Exception:
        return {"message": "There was an error uploading the file"}
    finally:
        file.file.close()

    return {"message": f"Successfully uploaded {file.filename}"}


if __name__ == "__main__":
    uvicorn.run("server:app", port=5000, log_level="info")