import os
import re
import platform
import re
import subprocess
import sys
import requests
from tools.logger import Logger
from tqdm import tqdm
import hashlib
from typing import Optional


def get_download_dir():
    download_loc = ""
    if os.environ.get("XDG_CACHE_HOME", None) is None:
        download_loc = os.path.join('/', "home", os.environ.get(
            "SUDO_USER", os.environ["USER"]), ".cache", "waydroid-script", "downloads"
        )
    else:
        download_loc = os.path.join(
            os.environ["XDG_CACHE_HOME"], "waydroid-script", "downloads"
        )
    if not os.path.exists(download_loc):
        os.makedirs(download_loc)
    return download_loc

# not good
def get_data_dir():
    return os.path.join('/', "home", os.environ.get("SUDO_USER", os.environ["USER"]), ".local", "share", "waydroid", "data")

# execute on host
def run(args: list, env: Optional[str] = None, ignore: Optional[str] = None):
    result = subprocess.run(
        args=args, 
        env=env, 
        stdout=subprocess.PIPE, 
        stderr=subprocess.PIPE
    )

    # print(result.stdout.decode())
    if result.stderr:
        error = result.stderr.decode("utf-8")
        if ignore and re.match(ignore, error):
            return result
        Logger.error(error)
        raise subprocess.CalledProcessError(
            returncode=result.returncode,
            cmd=result.args,
            stderr=result.stderr
        )
    return result

# execute on waydroid shell
def shell(arg: str, env: Optional[str] = None):
    a = subprocess.Popen(
        args=["sudo", "waydroid", "shell"],
        stdin=subprocess.PIPE,
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE
    )
    subprocess.Popen(
        args=["echo", "export BOOTCLASSPATH=/apex/com.android.art/javalib/core-oj.jar:/apex/com.android.art/javalib/core-libart.jar:/apex/com.android.art/javalib/core-icu4j.jar:/apex/com.android.art/javalib/okhttp.jar:/apex/com.android.art/javalib/bouncycastle.jar:/apex/com.android.art/javalib/apache-xml.jar:/system/framework/framework.jar:/system/framework/ext.jar:/system/framework/telephony-common.jar:/system/framework/voip-common.jar:/system/framework/ims-common.jar:/system/framework/framework-atb-backward-compatibility.jar:/apex/com.android.conscrypt/javalib/conscrypt.jar:/apex/com.android.media/javalib/updatable-media.jar:/apex/com.android.mediaprovider/javalib/framework-mediaprovider.jar:/apex/com.android.os.statsd/javalib/framework-statsd.jar:/apex/com.android.permission/javalib/framework-permission.jar:/apex/com.android.sdkext/javalib/framework-sdkextensions.jar:/apex/com.android.wifi/javalib/framework-wifi.jar:/apex/com.android.tethering/javalib/framework-tethering.jar"],
        stdout=a.stdin,
        stdin=subprocess.PIPE
    ).communicate()

    if env:
        subprocess.Popen(
            args=["echo", env],
            stdout=a.stdin,
            stdin=subprocess.PIPE
        ).communicate()

    subprocess.Popen(
        args=["echo", arg],
        stdout=a.stdin,
        stdin=subprocess.PIPE
    ).communicate()

    a.stdin.close()
    if a.stderr.read():
        Logger.error(a.stderr.read().decode('utf-8'))
        raise subprocess.CalledProcessError(
            returncode=a.returncode,
            cmd=a.args,
            stderr=a.stderr
        )
    return a.stdout.read().decode("utf-8")

def download_file(url, f_name):
    md5 = ""
    response = requests.get(url, stream=True)
    total_size_in_bytes = int(response.headers.get('content-length', 0))
    block_size = 1024  # 1 Kibibyte
    progress_bar = tqdm(total=total_size_in_bytes, unit='iB', unit_scale=True)
    with open(f_name, 'wb') as file:
        for data in response.iter_content(block_size):
            progress_bar.update(len(data))
            file.write(data)
    progress_bar.close()
    with open(f_name, "rb") as f:
        bytes = f.read()
        md5 = hashlib.md5(bytes).hexdigest()
    if total_size_in_bytes != 0 and progress_bar.n != total_size_in_bytes:
        raise ValueError("Something went wrong while downloading")
    return md5

def host():
    machine = platform.machine()

    mapping = {
        "i686": ("x86", 32),
        "x86_64": ("x86_64", 64),
        "aarch64": ("arm64-v8a", 64),
        "armv7l": ("armeabi-v7a", 32),
        "armv8l": ("armeabi-v7a", 32)
    }
    if machine in mapping:
        if mapping[machine] == "x86_64":
            with open("/proc/cpuinfo") as f:
                if "sse4_2" not in f.read():
                    Logger.warning("x86_64 CPU does not support SSE4.2, falling back to x86...")
                    return ("x86", 32)
        return mapping[machine]
    raise ValueError("platform.machine '" + machine + "'"
                     " architecture is not supported")


def check_root():
    if os.geteuid() != 0:
        Logger.error("This script must be run as root. Aborting.")
        sys.exit(1)

def upgrade():
    run(["waydroid", "upgrade", "-o"], ignore=r"\[.*\] Stopping container\n\[.*\] Starting container")