import os
import json
import socket
import urllib.request
from typing import Any
from pathlib import Path
import subprocess
import platform
import tempfile
from datetime import datetime

import psutil
import machineid  # https://github.com/keygen-sh/py-machineid

from rich import print

PACKAGE_DIR = Path(__file__).parent
DATA_DIR = Path(os.getcwd()).resolve()


def get_vm_info():
    hw_in_docker = bool(os.getenv("IN_DOCKER", False) in ("1", "true", "True", "TRUE"))
    hw_in_vm = False
    try:
        # check for traces of docker/containerd/podman in cgroup
        with open("/proc/self/cgroup") as procfile:
            for line in procfile:
                cgroup = line.strip()  # .split('/', 1)[-1].lower()
                if "docker" in cgroup or "containerd" in cgroup or "podman" in cgroup:
                    hw_in_docker = True
    except Exception:
        pass

    hw_manufacturer = "Docker" if hw_in_docker else "Unknown"
    hw_product = "Container" if hw_in_docker else "Unknown"
    hw_uuid = machineid.id()

    if platform.system().lower() == "darwin":
        # Get macOS machine info
        hw_manufacturer = "Apple"
        hw_product = "Mac"
        try:
            # Hardware:
            #     Hardware Overview:
            #       Model Name: Mac Studio
            #       Model Identifier: Mac13,1
            #       Model Number: MJMV3LL/A
            #       ...
            #       Serial Number (system): M230YYTD77
            #       Hardware UUID: 39A12B50-1972-5910-8BEE-235AD20C8EE3
            #       ...
            result = subprocess.run(["system_profiler", "SPHardwareDataType"], capture_output=True, text=True, check=True)
            for line in result.stdout.split("\n"):
                if "Model Name:" in line:
                    hw_product = line.split(":", 1)[-1].strip()
                elif "Model Identifier:" in line:
                    hw_product += " " + line.split(":", 1)[-1].strip()
                elif "Hardware UUID:" in line:
                    hw_uuid = line.split(":", 1)[-1].strip()
        except Exception:
            pass
    else:
        # get Linux machine info
        try:
            # Getting SMBIOS data from sysfs.
            # SMBIOS 2.8 present.
            # argo-1        | 2024-10-01T10:40:51Z ERR  error="Incoming request ended abruptly: context canceled" connIndex=2 event=1 ingressRule=0 originService=http://archivebox:8000                                                                               │
            # Handle 0x0100, DMI type 1, 27 bytes
            # System Information
            #         Manufacturer: DigitalOcean
            #         Product Name: Droplet
            #         Serial Number: 411922099
            #         UUID: fb65f41c-ec24-4539-beaf-f941903bdb2c
            #         ...
            #         Family: DigitalOcean_Droplet
            dmidecode = subprocess.run(["dmidecode", "-t", "system"], capture_output=True, text=True, check=True)
            for line in dmidecode.stdout.split("\n"):
                if "Manufacturer:" in line:
                    hw_manufacturer = line.split(":", 1)[-1].strip()
                elif "Product Name:" in line:
                    hw_product = line.split(":", 1)[-1].strip()
                elif "UUID:" in line:
                    hw_uuid = line.split(":", 1)[-1].strip()
        except Exception:
            pass

    # Check for VM fingerprint in manufacturer/product name
    if "qemu" in hw_product.lower() or "vbox" in hw_product.lower() or "lxc" in hw_product.lower() or "vm" in hw_product.lower():
        hw_in_vm = True

    # Check for QEMU explicitly in pmap output
    try:
        result = subprocess.run(["pmap", "1"], capture_output=True, text=True, check=True)
        if "qemu" in result.stdout.lower():
            hw_in_vm = True
    except Exception:
        pass

    return {
        "hw_in_docker": hw_in_docker,
        "hw_in_vm": hw_in_vm,
        "hw_manufacturer": hw_manufacturer,
        "hw_product": hw_product,
        "hw_uuid": hw_uuid,
    }


def get_public_ip() -> str:
    def fetch_url(url: str) -> str:
        with urllib.request.urlopen(url, timeout=5) as response:
            return response.read().decode("utf-8").strip()

    def fetch_dns(pubip_lookup_host: str) -> str:
        return socket.gethostbyname(pubip_lookup_host).strip()

    methods = [
        (lambda: fetch_url("https://ipinfo.io/ip"), lambda r: r),
        (lambda: fetch_url("https://api.ipify.org?format=json"), lambda r: json.loads(r)["ip"]),
        (lambda: fetch_dns("myip.opendns.com"), lambda r: r),
        (lambda: fetch_url("http://whatismyip.akamai.com/"), lambda r: r),  # try HTTP as final fallback in case of TLS/system time errors
    ]

    for fetch, parse in methods:
        try:
            result = parse(fetch())
            if result:
                return result
        except Exception:
            continue

    raise Exception("Could not determine public IP address")


def get_local_ip(remote_ip: str = "1.1.1.1", remote_port: int = 80) -> str:
    try:
        with socket.socket(socket.AF_INET, socket.SOCK_DGRAM) as s:
            s.connect((remote_ip, remote_port))
            return s.getsockname()[0]
    except Exception:
        pass
    return "127.0.0.1"


ip_addrs = lambda addrs: (a for a in addrs if a.family == socket.AF_INET)
mac_addrs = lambda addrs: (a for a in addrs if a.family == psutil.AF_LINK)


def get_isp_info(ip=None):
    # Get public IP
    try:
        ip = ip or urllib.request.urlopen("https://api.ipify.org").read().decode("utf8")
    except Exception:
        pass

    # Get ISP name, city, and country
    data = {}
    try:
        url = f"https://ipapi.co/{ip}/json/"
        response = urllib.request.urlopen(url)
        data = json.loads(response.read().decode())
    except Exception:
        pass

    isp = data.get("org", "Unknown")
    city = data.get("city", "Unknown")
    region = data.get("region", "Unknown")
    country = data.get("country_name", "Unknown")

    # Get system DNS resolver servers
    dns_server = None
    try:
        result = subprocess.run(["dig", "example.com", "A"], capture_output=True, text=True, check=True).stdout
        dns_server = result.split(";; SERVER: ", 1)[-1].split("\n")[0].split("#")[0].strip()
    except Exception:
        try:
            dns_server = Path("/etc/resolv.conf").read_text().split("nameserver ", 1)[-1].split("\n")[0].strip()
        except Exception:
            dns_server = "127.0.0.1"
            print(f"[red]:warning: WARNING: Could not determine DNS server, using {dns_server}[/red]")

    # Get DNS resolver's ISP name
    # url = f'https://ipapi.co/{dns_server}/json/'
    # dns_isp = json.loads(urllib.request.urlopen(url).read().decode()).get('org', 'Unknown')

    return {
        "isp": isp,
        "city": city,
        "region": region,
        "country": country,
        "dns_server": dns_server,
        # 'net_dns_isp': dns_isp,
    }


def get_host_network() -> dict[str, Any]:
    default_gateway_local_ip = get_local_ip()
    gateways = psutil.net_if_addrs()

    for interface, ips in gateways.items():
        for local_ip in ip_addrs(ips):
            if default_gateway_local_ip == local_ip.address:
                mac_address = next(mac_addrs(ips)).address
                public_ip = get_public_ip()
                return {
                    "hostname": max([socket.gethostname(), platform.node()], key=len),
                    "iface": interface,
                    "mac_address": mac_address,
                    "ip_local": local_ip.address,
                    "ip_public": public_ip,
                    # "is_behind_nat": local_ip.address != public_ip,
                    **get_isp_info(public_ip),
                }

    raise Exception("Could not determine host network info")


def get_os_info() -> dict[str, Any]:
    os_release = platform.release()
    if platform.system().lower() == "darwin":
        os_release = "macOS " + platform.mac_ver()[0]
    else:
        try:
            os_release = subprocess.run(["lsb_release", "-ds"], capture_output=True, text=True, check=True).stdout.strip()
        except Exception:
            pass

    return {
        "os_arch": platform.machine(),
        "os_family": platform.system().lower(),
        "os_platform": platform.platform(),
        "os_kernel": platform.version(),
        "os_release": os_release,
    }


def get_host_stats() -> dict[str, Any]:
    try:
        with tempfile.TemporaryDirectory() as tmp_dir:
            tmp_usage = psutil.disk_usage(str(tmp_dir))
        app_usage = psutil.disk_usage(str(PACKAGE_DIR))
        data_usage = psutil.disk_usage(str(DATA_DIR))
        mem_usage = psutil.virtual_memory()
        try:
            swap_usage = psutil.swap_memory()
            swap_used_pct = swap_usage.percent
            swap_used_gb = round(swap_usage.used / 1024 / 1024 / 1024, 3)
            swap_free_gb = round(swap_usage.free / 1024 / 1024 / 1024, 3)
        except OSError:
            # Some sandboxed environments deny access to swap stats
            swap_used_pct = 0.0
            swap_used_gb = 0.0
            swap_free_gb = 0.0
        return {
            "cpu_boot_time": datetime.fromtimestamp(psutil.boot_time()).isoformat(),
            "cpu_count": psutil.cpu_count(logical=False),
            "cpu_load": psutil.getloadavg(),
            # "cpu_pct": psutil.cpu_percent(interval=1),
            "mem_virt_used_pct": mem_usage.percent,
            "mem_virt_used_gb": round(mem_usage.used / 1024 / 1024 / 1024, 3),
            "mem_virt_free_gb": round(mem_usage.free / 1024 / 1024 / 1024, 3),
            "mem_swap_used_pct": swap_used_pct,
            "mem_swap_used_gb": swap_used_gb,
            "mem_swap_free_gb": swap_free_gb,
            "disk_tmp_used_pct": tmp_usage.percent,
            "disk_tmp_used_gb": round(tmp_usage.used / 1024 / 1024 / 1024, 3),
            "disk_tmp_free_gb": round(tmp_usage.free / 1024 / 1024 / 1024, 3),  # in GB
            "disk_app_used_pct": app_usage.percent,
            "disk_app_used_gb": round(app_usage.used / 1024 / 1024 / 1024, 3),
            "disk_app_free_gb": round(app_usage.free / 1024 / 1024 / 1024, 3),
            "disk_data_used_pct": data_usage.percent,
            "disk_data_used_gb": round(data_usage.used / 1024 / 1024 / 1024, 3),
            "disk_data_free_gb": round(data_usage.free / 1024 / 1024 / 1024, 3),
        }
    except Exception:
        return {}


def get_host_immutable_info(host_info: dict[str, Any]) -> dict[str, Any]:
    return {key: value for key, value in host_info.items() if key in ["guid", "net_mac", "os_family", "cpu_arch"]}


def get_host_guid() -> str:
    return machineid.hashed_id("archivebox")


# Example usage
if __name__ == "__main__":
    host_info = {
        "guid": get_host_guid(),
        "os": get_os_info(),
        "vm": get_vm_info(),
        "net": get_host_network(),
        "stats": get_host_stats(),
    }
    print(host_info)

# {
#     'guid': '1cd2dd279f8a854...6943f2384437991a',
#     'os': {
#         'os_arch': 'arm64',
#         'os_family': 'darwin',
#         'os_platform': 'macOS-14.6.1-arm64-arm-64bit',
#         'os_kernel': 'Darwin Kernel Version 23.6.0: Mon Jul 29 21:14:30 PDT 2024; root:xnu-10063.141.2~1/RELEASE_ARM64_T6000',
#         'os_release': 'macOS 14.6.1'
#     },
#     'vm': {'hw_in_docker': False, 'hw_in_vm': False, 'hw_manufacturer': 'Apple', 'hw_product': 'Mac Studio Mac13,1', 'hw_uuid': '39A12B50-...-...-...-...'},
#     'net': {
#         'hostname': 'somehost.sub.example.com',
#         'iface': 'en0',
#         'mac_address': 'ab:cd:ef:12:34:56',
#         'ip_local': '192.168.2.18',
#         'ip_public': '123.123.123.123',
#         'isp': 'AS-SONICTELECOM',
#         'city': 'Berkeley',
#         'region': 'California',
#         'country': 'United States',
#         'dns_server': '192.168.1.1'
#     },
#     'stats': {
#         'cpu_boot_time': '2024-09-24T21:20:16',
#         'cpu_count': 10,
#         'cpu_load': (2.35693359375, 4.013671875, 4.1171875),
#         'mem_virt_used_pct': 66.0,
#         'mem_virt_used_gb': 15.109,
#         'mem_virt_free_gb': 0.065,
#         'mem_swap_used_pct': 89.4,
#         'mem_swap_used_gb': 8.045,
#         'mem_swap_free_gb': 0.955,
#         'disk_tmp_used_pct': 26.0,
#         'disk_tmp_used_gb': 113.1,
#         'disk_tmp_free_gb': 322.028,
#         'disk_app_used_pct': 56.1,
#         'disk_app_used_gb': 2138.796,
#         'disk_app_free_gb': 1675.996,
#         'disk_data_used_pct': 56.1,
#         'disk_data_used_gb': 2138.796,
#         'disk_data_free_gb': 1675.996
#     }
# }