import ast
import logging
import os
import runpy
import subprocess
import sys
import time
from pathlib import Path
from typing import Optional

import psutil

from duskwm_logging import log

# Configs
main_dir = Path(sys.argv[0]).parent.resolve()
debug = ast.literal_eval(os.getenv("STATUS_DEBUG", "False"))

# Scripts by interval
statuses = {
    5: [(2, "./scripts/get_volume.py")],
    60: [
        (0, "./scripts/clock.py"),
        (4, "./scripts/get_battery.py"),
        (3, "./scripts/get_wifi.py"),
        (7, "./scripts/get_uptime.py"),
        (1, "./scripts/unread_mail.py"),
    ],
    # 300: [],
    3600: [(5, "./scripts/get_publicip.py"), (6, "./scripts/get_weather.py")],
}


def list_statuses():
    log.info("Status scripts being processed")
    for interval, status in statuses.items():
        period = "second" if interval == 1 else "seconds"
        log.info(f" Updating every {interval} {period}")
        for location, script in status:
            log.info(f"  {location}: {script}")


def kill_existing_instances():
    # Create a temporary lock to ensure firstrun can run
    lock_path = "/run/user/1000/duskwm_status.lock"
    try:
        with open(lock_path, "x") as lock_file:
            lock_file.write("Running")
    except FileExistsError:
        sys.exit(0)

    current_pid = os.getpid()
    found_existing = False

    for proc in psutil.process_iter(["pid", "name", "cmdline"]):
        try:
            cmdline = proc.info["cmdline"] or []
            cmdline_str = " ".join(cmdline)

            # Kill uv processes running our script
            if "uv run" in cmdline_str and "duskwm_status.py" in cmdline_str:
                pid = proc.info["pid"]
                if pid != current_pid:
                    os.kill(pid, 9)
                    log.warning(f"Killing uv process (PID {pid})")

            # Kill python processes running our script
            elif "python" in proc.info["name"] and "duskwm_status.py" in cmdline_str:
                pid = proc.info["pid"]
                if pid != current_pid:
                    os.kill(pid, 9)
                    log.warning(f"Killing python process (PID {pid})")
                    found_existing = True
        except (psutil.NoSuchProcess, psutil.AccessDenied):
            continue

    if not found_existing:
        log.info("First run detected, sleeping to let system initialize...")
        time.sleep(10)

    os.remove(lock_path)


def update_status(status: Optional[int], content: Optional[str]):
    status = status if status is not None else 99
    content = content if content is not None else ""
    if debug:
        log.setLevel(logging.DEBUG)
        log.debug(f"{status:>3} : {content}")
    else:
        subprocess.run(
            [
                "duskc",
                "--ignore-reply",
                "run_command",
                "setstatus",
                f"{status}",
                f"{content}",
            ]
        )


def get_status_data(scriptpath: str) -> Optional[str]:
    path = main_dir.joinpath(scriptpath).as_posix()
    result = runpy.run_path(path)
    content: Optional[str] = result.get("content", None)
    return content


# Run at startup
log.info(f"Running in Debug mode: {debug}")
log.info(f"Root script found at: {main_dir}")
kill_existing_instances()
list_statuses()

seconds = 0
while True:
    # Run on loop
    for interval, scripts in statuses.items():
        if seconds % interval == 0:
            for status, script in scripts:
                # try:
                data = get_status_data(script)
                # except Exception:
                #     data = f"Err: {script}"
                update_status(status, data)

    # Increment count and sleep for loop
    seconds += 1
    time.sleep(1)