OwnDroid/app/src/main/java/com/bintianqi/owndroid/Utils.kt

package com.bintianqi.owndroid

import android.app.admin.DevicePolicyManager
import android.content.*
import android.net.Uri
import android.widget.Toast
import androidx.activity.ComponentActivity
import androidx.activity.result.ActivityResultLauncher
import androidx.activity.result.contract.ActivityResultContracts
import com.bintianqi.owndroid.dpm.addDeviceAdmin
import com.bintianqi.owndroid.dpm.createManagedProfile
import kotlinx.coroutines.flow.MutableStateFlow
import java.io.FileNotFoundException
import java.io.IOException
import java.io.InputStream

lateinit var getFile: ActivityResultLauncher<Intent>
val fileUriFlow = MutableStateFlow(Uri.parse(""))

var zhCN = true

fun uriToStream(
    context: Context,
    uri: Uri?,
    operation: (stream: InputStream)->Unit
){
    if(uri!=null){
        try{
            val stream = context.contentResolver.openInputStream(uri)
            if(stream != null) { operation(stream) }
            stream?.close()
        }
        catch(e: FileNotFoundException) { Toast.makeText(context, R.string.file_not_exist, Toast.LENGTH_SHORT).show() }
        catch(e: IOException) { Toast.makeText(context, R.string.io_exception, Toast.LENGTH_SHORT).show() }
    }
}

fun List<Any>.toText():String{
    var output = ""
    var isFirst = true
    for(each in listIterator()){
        if(isFirst) { isFirst = false } else { output+="\n" }
        output+=each
    }
    return output
}

fun Set<Any>.toText(): String{
    var output = ""
    var isFirst = true
    for(each in iterator()){
        if(isFirst) { isFirst = false } else { output+="\n" }
        output += each
    }
    return output
}

fun writeClipBoard(context: Context, string: String):Boolean{
    val clipboardManager = context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
    try {
        clipboardManager.setPrimaryClip(ClipData.newPlainText("", string))
    }catch(e:Exception){
        return false
    }
    return true
}


fun registerActivityResult(context: ComponentActivity){
    getFile = context.registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { activityResult ->
        activityResult.data.let {
            if(it==null){
                Toast.makeText(context.applicationContext, R.string.file_not_exist, Toast.LENGTH_SHORT).show()
            }else{
                fileUriFlow.value = it.data
            }
        }
    }
    createManagedProfile = context.registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {}
    addDeviceAdmin = context.registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
        val dpm = context.applicationContext.getSystemService(ComponentActivity.DEVICE_POLICY_SERVICE) as DevicePolicyManager
        if(dpm.isAdminActive(ComponentName(context.applicationContext, Receiver::class.java))){
            backToHomeStateFlow.value = true
        }
    }
}