import logging
import re
import shutil
import subprocess

import frida
import requests

from pathlib import Path
from frida.core import Device

# Suppress urllib3 warnings
logging.getLogger('urllib3.connectionpool').setLevel(logging.ERROR)


def shell(prompt: list) -> subprocess.CompletedProcess:
    """
    Executes a shell command and returns the completed process.

    Args:
        prompt (list): The command to be executed as a list of strings.

    Returns:
        subprocess.CompletedProcess: The completed process object containing return code, stdout, and stderr.
    """
    prompt = list(map(str, prompt))
    # logging.getLogger('Shell').debug(' '.join(prompt))
    return subprocess.run(prompt, capture_output=True)


class ADB:
    """
    Class for managing interactions with the Android device via ADB.
    """

    def __init__(self, device: str = None, timeout: int = 5):
        """
        Initializes the ADB connection to a device.

        Args:
            device (str, optional): The ID of the device to connect to. If None, defaults to the first USB device.
            timeout (int, optional): The timeout for device connection in seconds. Defaults to 5.

        Raises:
            EnvironmentError: If ADB is not found in the system path.
            Exception: If the connection to the device fails.
        """
        self.logger = logging.getLogger(self.__class__.__name__)

        # Ensure ADB is available
        if not shutil.which('adb'):
            raise EnvironmentError(
                'ADB is not recognized as an environment variable. '
                'Ensure ADB is installed and refer to the documentation: '
                'https://github.com/hyugogirubato/KeyDive/blob/main/docs/PACKAGE.md#adb-android-debug-bridge'
            )

        # Start the ADB server if not already running
        sp = shell(['adb', 'start-server'])
        if sp.returncode != 0:
            self.logger.warning('ADB server startup failed (Error: %s)', sp.stdout.decode('utf-8').strip())

        # Select device based on provided ID or default to the first USB device
        try:
            self.device: Device = frida.get_device(id=device, timeout=timeout) if device else frida.get_usb_device(timeout=timeout)
            self.logger.info('Connected to device: %s (%s)', self.device.name, self.device.id)
        except Exception as e:
            self.logger.error('Failed to connect to device: %s', e)
            raise e

        self.prompt = ['adb', '-s', self.device.id, 'shell']

        # Obtain device properties
        properties = self.device_properties()
        if properties:
            self.logger.info('SDK API: %s', properties.get('ro.build.version.sdk', 'Unknown'))
            self.logger.info('ABI CPU: %s', properties.get('ro.product.cpu.abi', 'Unknown'))
        else:
            self.logger.warning('No device properties were retrieved.')

    def device_properties(self) -> dict:
        """
        Retrieves system properties from the connected device using ADB shell commands.

        Returns:
            dict: A dictionary mapping device property keys to their corresponding values.
        """
        # https://source.android.com/docs/core/architecture/configuration/add-system-properties?#shell-commands
        properties = {}

        # Execute shell command to retrieve device properties
        sp = shell([*self.prompt, 'getprop'])
        if sp.returncode != 0:
            self.logger.error('Failed to retrieve device properties (Error: %s)', sp.stdout.decode('utf-8').strip())
            return properties

        # Parse the output to fill the properties dictionary
        for line in sp.stdout.decode('utf-8').splitlines():
            match = re.match(r'\[(.*?)\]: \[(.*?)\]', line)
            if match:
                key, value = match.groups()

                # Attempt to cast numeric and boolean values
                if value.isdigit():
                    value = int(value)
                elif value.lower() in ('true', 'false'):
                    value = value.lower() == 'true'

                properties[key] = value

        return properties

    def list_applications(self, user: bool = True, system: bool = False) -> dict:
        """
        Lists installed applications on the device, filtering by user and/or system apps.

        Args:
            user (bool, optional): Whether to include user-installed applications. Defaults to True.
            system (bool, optional): Whether to include system applications. Defaults to False.

        Returns:
            dict: A dictionary mapping application packages to their file paths.
        """
        applications = {}

        # Validate input and set the appropriate prompt
        if not user and not system:
            return applications

        prompt = [*self.prompt, 'pm', 'list', 'packages', '-f']
        if user and not system:
            prompt.append('-3')
        elif not user and system:
            prompt.append('-s')

        # Execute shell command to list applications
        sp = shell(prompt)
        if sp.returncode != 0:
            self.logger.error('Failed to retrieve application list (Error: %s)', sp.stdout.decode('utf-8').strip())
            return applications

        # Parse and store applications in the dictionary
        for line in sp.stdout.decode('utf-8').splitlines():
            try:
                path, package = line.strip().split(':', 1)[1].rsplit('=', 1)
                applications[package] = path
            except Exception as e:
                pass

        return applications

    def start_application(self, package: str) -> bool:
        """
        Starts an application by its package name.

        Args:
            package (str): The package name of the application to start.

        Returns:
            bool: True if the application was started successfully, False otherwise.
        """
        # Get package information
        sp = shell([*self.prompt, 'dumpsys', 'package', package])
        lines = sp.stdout.decode('utf-8').splitlines()

        # Remove empty lines to ensure backwards compatibility
        lines = [l.strip() for l in lines if l.strip()]

        # Look for main activity in package information
        for i, line in enumerate(lines):
            if 'android.intent.action.MAIN' in line:
                match = re.search(fr'({package}/[^ ]+)', lines[i + 1])
                if match:
                    # Attempt to start the application
                    main_activity = match.group()
                    sp = shell([*self.prompt, 'am', 'start', '-n', main_activity])
                    if sp.returncode == 0:
                        return True

                    self.logger.error('Failed to start application %s (Error: %s)', package, sp.stdout.decode('utf-8').strip())
                break

        self.logger.error('Package %s not found or has no MAIN intent action.', package)
        return False

    def enumerate_processes(self) -> dict:
        """
        Lists running processes on the device, mapping process names to PIDs.

        Returns:
            dict: A dictionary mapping process names to their corresponding PIDs.
        """
        # https://github.com/frida/frida/issues/1225#issuecomment-604181822
        processes = {}

        # Try to get the list of processes using `ps -A`
        prompt = [*self.prompt, 'ps']
        sp = shell([*prompt, '-A'])
        lines = sp.stdout.decode('utf-8').splitlines()

        # If the output has less than 10 lines, try the alternative `ps` command
        if len(lines) < 10:
            sp = shell(prompt)
            if sp.returncode != 0:
                self.logger.error('Failed to execute ps command (Error: %s)', sp.stdout.decode('utf-8').strip())
                return processes
            lines = sp.stdout.decode('utf-8').splitlines()

        # Iterate through lines starting from the second line (skipping header)
        for line in lines[1:]:
            try:
                parts = line.split()  # USER,PID,PPID,VSZ,RSS,WCHAN,ADDR,S,NAME
                pid = int(parts[1])  # Extract PID
                name = ' '.join(parts[8:]).strip()  # Extract process name

                # Handle cases where the name might be in brackets
                name = name if name.startswith('[') else Path(name).name
                processes[name] = pid
            except Exception as e:
                pass

        return processes

    def install_application(self, path: Path = None, url: str = None) -> bool:
        """
        Installs an application from a local file path or a URL.

        Args:
            path (Path, optional): The local file path of the APK to install. Defaults to None.
            url (str, optional): The URL to download the APK from. Defaults to None.

        Returns:
            bool: True if the installation was successful, False otherwise.
        """
        prompt = [*self.prompt[:-1], 'install']

        # Install from a local file path if provided
        if path and path.is_file():
            sp = shell([*prompt, path])
            if sp.returncode == 0:
                return True
            self.logger.error('Installation failed for local path: %s (Error: %s)', path, sp.stdout.decode('utf-8').strip())

        # Install from a URL if provided
        status = False
        if url:
            file = Path('tmp.apk')
            try:
                r = requests.get(url, headers={'Accept': '*/*', 'User-Agent': 'KeyDive/ADB'})
                r.raise_for_status()

                # Write downloaded content to temporary APK file
                file.write_bytes(r.content)

                # Attempt installation from the downloaded file
                status = self.install_application(path=file)
            except Exception as e:
                self.logger.error('Failed to download application from URL: %s (Error: %s)', url, e)
            file.unlink(missing_ok=True)

        return status

    def open_url(self, url: str) -> bool:
        """
        Opens a specified URL on the connected device.

        Args:
            url (str): The URL to open on the device.

        Returns:
            bool: True if the URL was opened successfully, False otherwise.
        """
        # Execute the shell command to open the URL
        sp = shell([*self.prompt, 'am', 'start', '-a', 'android.intent.action.VIEW', '-d', url])

        # Check the result and log accordingly
        if sp.returncode != 0:
            self.logger.error('URL open failed for: %s (Return: %s)', url, sp.stdout.decode('utf-8').strip())
            return False
        return True


__all__ = ('ADB',)