import os
import threading
import time
from fastapi import FastAPI
from fastapi.responses import FileResponse, HTMLResponse, PlainTextResponse, StreamingResponse
from fastapi.staticfiles import StaticFiles
import uvicorn

from run import start_finder


app = FastAPI()
app.mount('/file/db', StaticFiles(directory='db/', html=False), '/file/db')
def tail_file(path):
    with open(path, "r", encoding="utf-8") as f:
        f.seek(0, os.SEEK_END)  # start at EOF
        while True:
            line = f.readline()
            if line:
                yield f"data: {line.strip()}\n\n"
            else:
                time.sleep(1)
                
@app.get("/raw-pair")
def send_raw_pair():
    with open('public/pair.txt') as f:
        return PlainTextResponse(f.read())

@app.get("/live-pair")
def live_pairs():
    with open('public/live-pairs.html') as f:
        return HTMLResponse(f.read())

@app.get("/stream-pair")
def stream_pairs():
    return StreamingResponse(tail_file('public/pair.txt'), media_type="text/event-stream")

@app.on_event('startup')
def start():
    runner = threading.Thread(target=start_finder, daemon=True)
    runner.start()

if __name__ == "__main__":
    uvicorn.run(app, host='0.0.0.0', port=7860)