from modules.globalvars import *
import time
import os
import sys
import subprocess
import sysconfig
import ast
import json
import re
from spacy.util import is_package
import importlib.metadata
import logging
import modules.keys as k
from modules.settings import instance as settings_manager
from modules.sync_conenctor import instance as sync_hub

settings = settings_manager.settings


logger = logging.getLogger("goober")

# import shutil
psutilavaliable = True
try:
    import requests
    import psutil
except ImportError:
    psutilavaliable = False
    logger.error(k.missing_requests_psutil())


def check_for_model():
    if is_package("en_core_web_sm"):
        logger.info("Model is installed.")
    else:
        logger.info("Model is not installed.")


def iscloned():
    if os.path.exists(".git"):
        return True
    else:
        logger.error(f"{k.not_cloned()}")
        sys.exit(1)


def get_stdlib_modules():
    stdlib_path = pathlib.Path(sysconfig.get_paths()["stdlib"])
    modules = set()
    if hasattr(sys, "builtin_module_names"):
        modules.update(sys.builtin_module_names)
    for file in stdlib_path.glob("*.py"):
        if file.stem != "__init__":
            modules.add(file.stem)
    for folder in stdlib_path.iterdir():
        if folder.is_dir() and (folder / "__init__.py").exists():
            modules.add(folder.name)
    for file in stdlib_path.glob("*.*"):
        if file.suffix in (".so", ".pyd"):
            modules.add(file.stem)

    return modules


def check_requirements():
    STD_LIB_MODULES = get_stdlib_modules()
    PACKAGE_ALIASES = {
        "discord": "discord.py",
        "better_profanity": "better-profanity",
        "dotenv": "python-dotenv",
        "pil": "pillow",
        "websocket": "websocket-client"
    }

    parent_dir = os.path.dirname(os.path.abspath(__file__))
    requirements_path = os.path.abspath(
        os.path.join(parent_dir, "..", "requirements.txt")
    )

    if not os.path.exists(requirements_path):
        logger.error(f"{k.requirements_not_found(path=requirements_path)}")
        return

    with open(requirements_path, "r") as f:
        lines = f.readlines()
        requirements = set()
        for line in lines:
            line = line.strip()
            if line and not line.startswith("#"):
                base_pkg = line.split("==")[0].lower()
                aliased_pkg = PACKAGE_ALIASES.get(base_pkg, base_pkg)
                requirements.add(aliased_pkg)

    installed_packages = {
        dist.metadata["Name"].lower() for dist in importlib.metadata.distributions()
    }
    missing = []

    for req in sorted(requirements):
        if req in STD_LIB_MODULES or req == "modules":
            print(k.std_lib_local_skipped(package=req))
            continue

        check_name = req.lower()

        if check_name in installed_packages:
            logger.info(f"{k.ok_installed()} {check_name}")
        else:
            logger.error(f"{k.missing_package()} {check_name} {k.missing_package2()}")
            missing.append(check_name)

    if missing:
        logger.error(k.missing_packages_detected())
        for pkg in missing:
            print(f"  - {pkg}")
        sys.exit(1)
    else:
        logger.info(k.all_requirements_satisfied())


def check_latency():
    host = "1.1.1.1"
    system = platform.system()

    if system == "Windows":
        cmd = ["ping", "-n", "1", "-w", "1000", host]
        latency_pattern = r"Average = (\d+)ms"

    elif system == "Darwin":
        cmd = ["ping", "-c", "1", host]
        latency_pattern = r"time=([\d\.]+) ms"

    else:
        cmd = ["ping", "-c", "1", "-W", "1", host]
        latency_pattern = r"time=([\d\.]+) ms"

    try:
        result = subprocess.run(
            cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True
        )

        if result.returncode == 0:
            match = re.search(latency_pattern, result.stdout)
            if match:
                latency_ms = float(match.group(1))
                logger.info(k.ping_to(host=host, latency=latency_ms))
                if latency_ms > 300:
                    logger.warning(f"{k.high_latency()}")
            else:
                logger.warning(k.could_not_parse_latency())
        else:
            print(result.stderr)
            logger.error(f"{k.ping_failed(host=host)}{RESET}")
    except Exception as e:
        logger.error(k.error_running_ping(error=e))


def check_memory():
    if psutilavaliable == False:
        return
    try:
        memory_info = psutil.virtual_memory()  # type: ignore
        total_memory = memory_info.total / (1024**3)
        used_memory = memory_info.used / (1024**3)
        free_memory = memory_info.available / (1024**3)

        logger.info(
            k.memory_usage(
                used=used_memory,
                total=total_memory,
                percent=(used_memory / total_memory) * 100,
            )
        )
        if used_memory > total_memory * 0.9:
            print(
                f"{YELLOW}{k.memory_above_90(percent=(used_memory / total_memory) * 100)}{RESET}"
            )
        logger.info(k.total_memory(total=total_memory))
        logger.info(k.used_memory(used=used_memory))
        if free_memory < 1:
            logger.warning(f"{k.low_free_memory(free=free_memory)}")

    except ImportError:
        logger.error(
            k.psutil_not_installed()
        )  # todo: translate this into italian and put it in the translations "psutil is not installed. Memory check skipped."


def check_cpu():
    if psutilavaliable == False:
        return
    logger.info(k.measuring_cpu())
    cpu_per_core = psutil.cpu_percent(interval=1, percpu=True)  # type: ignore
    total_cpu = sum(cpu_per_core) / len(cpu_per_core)
    logger.info(k.total_cpu_usage(usage=total_cpu))

    if total_cpu > 85:
        logger.warning(f"{k.high_avg_cpu(usage=total_cpu)}")

    if total_cpu > 95:
        logger.error(k.really_high_cpu())
        sys.exit(1)


def check_memoryjson():
    try:
        logger.info(
            k.memory_file(
                size=os.path.getsize(settings["bot"]["active_memory"]) / (1024**2)
            )
        )
        if os.path.getsize(settings["bot"]["active_memory"]) > 1_073_741_824:
            logger.warning(f"{k.memory_file_large()}")
        try:
            with open(settings["bot"]["active_memory"], "r", encoding="utf-8") as f:
                json.load(f)

        except json.JSONDecodeError as e:
            logger.error(f"{k.memory_file_corrupted(error=e)}")
            logger.warning(f"{k.consider_backup_memory()}")

        except UnicodeDecodeError as e:
            logger.error(f"{k.memory_file_encoding(error=e)}")
            logger.warning(f"{k.consider_backup_memory()}")

        except Exception as e:
            logger.error(f"{k.error_reading_memory(error=e)}")
    except FileNotFoundError:
        logger.info(f"{k.memory_file_not_found()}")


def presskey2skip(timeout):
    if os.name == "nt":
        import msvcrt

        start_time = time.time()
        while True:
            if msvcrt.kbhit():
                msvcrt.getch()
                break
            if time.time() - start_time > timeout:
                break
            time.sleep(0.1)
    else:
        import select
        import sys
        import termios
        import tty

        fd = sys.stdin.fileno()
        old_settings = termios.tcgetattr(fd)
        try:
            tty.setcbreak(fd)
            start_time = time.time()
            while True:
                if select.select([sys.stdin], [], [], 0)[0]:
                    sys.stdin.read(1)
                    break
                if time.time() - start_time > timeout:
                    break
                time.sleep(0.1)
        finally:
            termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)

def check_synchub():
    if not sync_hub.connected:
        logger.warning("Sync hub not connected properly! The bot will not be able to react to messages, or create breaking news unless you disable synchub in settings")
    else:
        logger.info("Sync hub is conencted")

beta = beta


def start_checks():
    if settings["disable_checks"]:
        logger.warning(f"{k.checks_disabled()}")
        return

    logger.info(k.running_prestart_checks())
    check_for_model()
    iscloned()
    check_requirements()
    check_latency()
    check_memory()
    check_memoryjson()
    check_cpu()
    check_synchub()
    if os.path.exists(".env"):
        pass
    else:
        logger.warning(f"{k.env_file_not_found()}")
        sys.exit(1)
    if beta == True:
        logger.warning(
            f"this build isnt finished yet, some things might not work as expected"
        )
    else:
        pass
    logger.info(k.continuing_in_seconds(seconds=5))
    presskey2skip(timeout=5)
    os.system("cls" if os.name == "nt" else "clear")

    with open(settings["splash_text_loc"], "r") as f:
        print("".join(f.readlines()))