"""
Android App Module
Android-specific application model.
"""
import logging
import os
from .android_intent import AndroidIntent
from ...core.abstract_app import AbstractApp
from ...exceptions import FATAL_EXCEPTIONS


class AndroidApp(AbstractApp):
    """
    Android 应用类 - 用于解析和管理 APK 文件信息
    
    继承自 AbstractApp，实现 Android 特定的应用管理功能。
    """

    def __init__(self, package_name, output_dir=None):
        """
        创建 AndroidApp 实例
        
        :param package_name: 应用包名
        :param output_dir: 输出目录路径
        """
        super().__init__(output_dir=output_dir)
        
        self.app_path = None
        self.output_dir = output_dir
        
        if output_dir is not None:
            if not os.path.isdir(output_dir):
                os.makedirs(output_dir)

        self.package_name = package_name
        self._main_activity = None
        self._activities = []
        self.dumpsys_main_activity = None

    @property
    def identifier(self) -> str:
        """获取应用唯一标识符（package_name）"""
        return self.package_name

    @property
    def main_activity(self) -> str:
        """获取主 Activity 名称"""
        if self._main_activity is not None:
            return self._main_activity
        else:
            if self.dumpsys_main_activity:
                self.logger.warning("Cannot get main activity from manifest. Using dumpsys result instead.")
                return self.dumpsys_main_activity
            return None
    
    @main_activity.setter
    def main_activity(self, value):
        """设置主 Activity"""
        self._main_activity = value
    
    @property
    def activities(self) -> list:
        """获取入口点列表（activities）"""
        return self._activities

    @activities.setter
    def activities(self, value):
        """设置 Activity 列表"""
        self._activities = value

    def get_start_with_profiling_intent(self, trace_file, sampling=None) -> 'AndroidIntent':
        """获取带 profiling 的启动 Intent"""
        package_name = self.package_name
        if self.main_activity:
            package_name += "/%s" % self.main_activity
        if sampling is not None:
            return AndroidIntent(prefix="start --start-profiler %s --sampling %d" % (trace_file, sampling), suffix=package_name)
        else:
            return AndroidIntent(prefix="start --start-profiler %s" % trace_file, suffix=package_name)


    def populate_activities(self, device):
        """
        使用 adb dumpsys package 获取所有 Activity
        """
        import re
        self.logger.info(f"Populating activities for {self.package_name} via dumpsys...")
        try:
            cmd = f"dumpsys package {self.package_name}"
            output = device.adb.shell(cmd)
            
            # 匹配形如: [hash] package/activity
            pattern = re.compile(r'([0-9a-f]+)\s+' + re.escape(self.package_name) + r'/([^ \s]+)')
            matches = pattern.findall(output)
            
            new_activities = []
            for m in matches:
                activity_full_name = f"{self.package_name}/{m[1]}"
                if activity_full_name not in new_activities:
                    new_activities.append(activity_full_name)
            
            if new_activities:
                self.activities = sorted(new_activities)
                self.logger.info(f"Found {len(self.activities)} activities via dumpsys.")
            else:
                self.logger.warning("No activities found via dumpsys.")
                
        except FATAL_EXCEPTIONS:
            raise
        except Exception as e:
            self.logger.error(f"Failed to populate activities via dumpsys: {e}")
            # 非致命异常，activities保持为空