from pathlib import Path
import tempfile
from typing import BinaryIO
import json

import gradio as gr
from datetime import datetime
import uuid

from about import API, submissions_repo

def make_submission(
    submitted_file: BinaryIO,
    user_state,
    anonymous_state):

    if user_state is None:
        raise gr.Error("You must submit your username to submit a file.")
    
    file_path = submitted_file.name

    if not file_path:
        raise gr.Error("Uploaded file object does not have a valid file path.")
    
    path_obj = Path(file_path)
    timestamp = datetime.utcnow().isoformat()
    submission_id = uuid.uuid4()

    with (path_obj.open("rb") as f_in):
        file_content = f_in.read().decode("utf-8")

        # write to dataset
        filename = f"{submission_id}.json"
        record = {
            "submission_id": submission_id,
            "submission_filename": filename,
            "submission_time": timestamp,
            "csv_content": file_content,
            "evaluated": False,
            "user": user_state,
            "anonymous": anonymous_state
        }
        with tempfile.NamedTemporaryFile(mode="w", suffix=".json", delete=False) as tmp:
            json.dump(record, tmp, indent=2)
            tmp.flush()
            tmp_name = tmp.name

        API.upload_file(
            path_or_fileobj=tmp_name, 
            path_in_repo=filename,
            repo_id=submissions_repo,
            repo_type="dataset",
            commit_message=f"Add submission for {user_state} at {timestamp}"
        )
        Path(tmp_name).unlink()

    return "✅ Your submission has been received! Sit tight and your scores will appear on the leaderboard shortly."