import json
import os
import logging
import threading
import webbrowser
from pathlib import Path
from typing import Any, Dict

from flask import Flask, jsonify, make_response, render_template, request, send_file

from services.run_bot import AutomationController
from config import DEFAULT_TARGET_URL

APP_DIR = Path(__file__).resolve().parent
ROOT_DIR = APP_DIR.parent
CONFIG_PATH = APP_DIR / "config.json"

logging.basicConfig(level=logging.INFO, format="%(asctime)s %(levelname)s: %(message)s")

app = Flask(
    __name__,
    template_folder=str(APP_DIR / "templates"),
    static_folder=str(APP_DIR / "static"),
    static_url_path="/static",
)
controller = AutomationController()


def load_saved_settings() -> Dict[str, Any]:
    default_settings = {
        "target_url": DEFAULT_TARGET_URL,
    }

    if not CONFIG_PATH.exists():
        return default_settings
    try:
        data = json.loads(CONFIG_PATH.read_text(encoding="utf-8"))
        return {
            "target_url": data.get("target_url", default_settings["target_url"]),
        }
    except Exception:
        return default_settings


def save_settings(payload: Dict[str, Any]) -> None:
    data = {
        "target_url": payload.get("target_url", DEFAULT_TARGET_URL),
    }
    CONFIG_PATH.write_text(json.dumps(data, indent=2), encoding="utf-8")


@app.get("/")
def index():
    return render_template("index.html", settings=load_saved_settings())


@app.post("/start")
def start():
    result = controller.start(target_url=DEFAULT_TARGET_URL)
    status_code = 200 if result.get("ok") else 400
    return jsonify(result), status_code


@app.post("/stop")
def stop():
    return jsonify(controller.stop())


@app.get("/status")
def status():
    return jsonify(controller.snapshot())


@app.get("/screenshot")
def screenshot_route():
    logs_dir = ROOT_DIR / "logs"
    latest = logs_dir / "screenshot_latest.png"
    latest = latest.resolve()

    logging.info(f"Screenshot request: ROOT_DIR={ROOT_DIR}, logs_dir={logs_dir}, latest={latest}, exists={latest.exists()}")

    if not latest.exists():
        if logs_dir.exists():
            files = list(logs_dir.glob("*.png"))
            logging.warning(f"Screenshot not found at {latest}. Files in {logs_dir}: {files}")
        else:
            logging.warning(f"Logs directory doesn't exist: {logs_dir}")
        return ("", 204)
    try:
        logging.info(f"Sending screenshot: {latest}")
        response = make_response(send_file(str(latest), mimetype="image/png"))
        response.headers["Cache-Control"] = "no-store, no-cache, must-revalidate, max-age=0"
        response.headers["Pragma"] = "no-cache"
        response.headers["Expires"] = "0"
        return response
    except Exception as e:
        logging.error(f"Screenshot send failed: {e}")
        return ("", 500)


@app.post("/save-settings")
def save_settings_route():
    payload = request.get_json(silent=True) or {}
    target_url = str(payload.get("target_url", DEFAULT_TARGET_URL)).strip()

    save_settings({
        "target_url": target_url,
    })
    return jsonify({"ok": True, "message": "Settings saved"})


if __name__ == "__main__":
    port = int(os.environ.get("PORT", "5000"))
    host = "0.0.0.0" if "PORT" in os.environ else "127.0.0.1"

    if "PORT" not in os.environ:
        threading.Timer(1.0, lambda: webbrowser.open_new(f"http://localhost:{port}")).start()

    app.run(host=host, port=port, debug=False, threaded=True)