# -*- coding: utf-8 -*-
"""
Copyright (c) 2026 KenanZhu.
All rights reserved.

This software is provided "as is", without any warranty of any kind.
You may use, modify, and distribute this file under the terms of the MIT License.
See the LICENSE file for details.
"""
import platform
import browsers

from pathlib import Path
from enum import Enum
from dataclasses import dataclass


class WebBrowserType(Enum):
    """
        Web browser type
    """

    CHROME = "chrome"
    FIREFOX = "firefox"
    EDGE = "edge"


class WebBrowserArch(Enum):
    """
        Web browser architecture
    """

    WINX86_32 = 0
    WINX86_64 = 1
    WINARM = 2

    LINUXX86_32 = 3
    LINUXX86_64 = 4
    LINUXARM = 5

    MACX86_64 = 6
    MACARM = 7


@dataclass
class WebBrowserInfo:
    """
        Web browser information

        Attributes:
            browser_arch (WebBrowserArch): Web browser architecture
            browser_type (WebBrowserType): Web browser type
            browser_version (str): Web browser version
            browser_path (Path): Web browser executable file path
    """

    browser_arch: WebBrowserArch
    browser_type: WebBrowserType
    browser_version: str
    browser_path: Path


class WebBrowserArchDetector:
    """
        Web browser architecture detector
    """

    def __init__(
        self
    ):

        pass

    def detect(
        self
    ) -> WebBrowserArch:
        """
            Detect system architecture

            Returns:
                WebBrowserArch: System architecture
        """

        system = platform.system()
        machine = platform.machine().lower()
        if system == "Windows":
            if machine in ["amd64", "x86_64"]:
                return WebBrowserArch.WINX86_64
            elif machine in ["i386", "i686", "x86"]:
                return WebBrowserArch.WINX86_32
            elif machine in ["arm64", "aarch64"]:
                return WebBrowserArch.WINARM
            else:
                return WebBrowserArch.WINX86_64
        elif system == "Darwin":
            if machine in ["arm64", "aarch64"]:
                return WebBrowserArch.MACARM
            else:
                return WebBrowserArch.MACX86_64
        elif system == "Linux":
            if machine in ["amd64", "x86_64"]:
                return WebBrowserArch.LINUXX86_64
            elif machine in ["i386", "i686", "x86"]:
                return WebBrowserArch.LINUXX86_32
            elif machine in ["arm64", "aarch64"]:
                return WebBrowserArch.LINUXARM
            elif machine.startswith("arm"):
                return WebBrowserArch.LINUXARM
            else:
                return WebBrowserArch.LINUXX86_64
        raise ValueError(f"不支持的系统架构 : {system} {machine}")


class WebBrowserDetector:
    """
        Web browser detector
    """

    def __init__(
        self
    ):

        self.browser_arch = WebBrowserArchDetector().detect()
        self.browser_infos : list[WebBrowserInfo] = []

    def detect(
        self
    ) -> list[WebBrowserInfo]:

        """
            Detect installed web browsers on the system.

            Returns:
                list[WebBrowserInfo]: List of detected browser information objects.
        """

        self.browser_infos = []
        try:
            all_browsers = list(browsers.browsers())
        except Exception as e:
            self.browser_infos = []
            return self.browser_infos

        # Mapping from internal library name to our enum
        type_map = {
            'chrome': WebBrowserType.CHROME,
            'firefox': WebBrowserType.FIREFOX,
            'msedge': WebBrowserType.EDGE,
        }
        for browser in all_browsers:
            internal_name = browser.get("browser_type", "").lower()
            if internal_name not in type_map:
                continue  # Not one of the browsers we care about
            version = browser.get("version", "")
            if not version:
                # Skip browsers with no version info (unlikely, but defensive)
                continue
            exe_path = browser.get("path", "")
            if not exe_path:
                continue
            try:
                path = Path(exe_path)
                if not path.is_file():
                    continue
            except Exception:
                continue  # Invalid path
            info = WebBrowserInfo(
                browser_arch=self.browser_arch,  # Use system architecture as fallback
                browser_type=type_map[internal_name],
                browser_version=version,
                browser_path=path,
            )
            self.browser_infos.append(info)
        # Deduplicate: keep only one entry per (type, version)
        seen = set()
        unique = []
        for info in self.browser_infos:
            key = (info.browser_type, info.browser_version)
            if key not in seen:
                seen.add(key)
                unique.append(info)
        self.browser_infos = unique
        return self.browser_infos