package com.phxh.audio;

import android.content.Context;
import android.media.AudioManager;
import android.media.AudioDeviceInfo;
import android.os.Build;

public class AndroidAudioDeviceChecker {
    private static AudioManager mAudioManager = null;
    private static int lastKnownDeviceType = -1;
    
    public static void init(Context context) {
        if (mAudioManager == null) {
            mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
            updateLastKnownDevice();
        }
    }
    
    public static boolean hasAudioDeviceChanged() {
        if (mAudioManager == null) return false;
        
        int currentDevice = getCurrentDeviceType();
        boolean isChanged = (currentDevice != lastKnownDeviceType);
        
        if (isChanged) {
            lastKnownDeviceType = currentDevice;
        }
        
        return isChanged;
    }
    
    private static void updateLastKnownDevice() {
        if (mAudioManager != null) {
            lastKnownDeviceType = getCurrentDeviceType();
        }
    }
    
    private static int getCurrentDeviceType() {
        if (mAudioManager == null) return -1;
        
        int deviceType = 0;
        
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            AudioDeviceInfo[] devices = mAudioManager.getDevices(AudioManager.GET_DEVICES_OUTPUTS);
            for (AudioDeviceInfo device : devices) {
                int type = device.getType();
                if (type == AudioDeviceInfo.TYPE_WIRED_HEADPHONES || 
                    type == AudioDeviceInfo.TYPE_WIRED_HEADSET) {
                    deviceType |= 1;
                } else if (type == AudioDeviceInfo.TYPE_BLUETOOTH_A2DP || 
                          type == AudioDeviceInfo.TYPE_BLUETOOTH_SCO) {
                    deviceType |= 2;
                } else if (type == AudioDeviceInfo.TYPE_BUILTIN_SPEAKER) {
                    deviceType |= 4;
                }
            }
        } else {
            if (mAudioManager.isWiredHeadsetOn()) {
                deviceType |= 1;
            }
            if (mAudioManager.isBluetoothA2dpOn() || mAudioManager.isBluetoothScoOn()) {
                deviceType |= 2;
            }
        }
        
        return deviceType;
    }
    
    public static boolean isWiredHeadsetConnected() {
        if (mAudioManager == null) return false;
        
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            AudioDeviceInfo[] devices = mAudioManager.getDevices(AudioManager.GET_DEVICES_OUTPUTS);
            for (AudioDeviceInfo device : devices) {
                int type = device.getType();
                if (type == AudioDeviceInfo.TYPE_WIRED_HEADPHONES || 
                    type == AudioDeviceInfo.TYPE_WIRED_HEADSET) {
                    return true;
                }
            }
            return false;
        } else {
            return mAudioManager.isWiredHeadsetOn();
        }
    }
    
    public static boolean isBluetoothConnected() {
        if (mAudioManager == null) return false;
        
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            AudioDeviceInfo[] devices = mAudioManager.getDevices(AudioManager.GET_DEVICES_OUTPUTS);
            for (AudioDeviceInfo device : devices) {
                int type = device.getType();
                if (type == AudioDeviceInfo.TYPE_BLUETOOTH_A2DP || 
                    type == AudioDeviceInfo.TYPE_BLUETOOTH_SCO) {
                    return true;
                }
            }
            return false;
        } else {
            return mAudioManager.isBluetoothA2dpOn() || mAudioManager.isBluetoothScoOn();
        }
    }
}