package com.binbin.androidowner

import android.app.admin.DevicePolicyManager
import android.app.admin.SystemUpdateInfo
import android.app.admin.SystemUpdatePolicy
import android.content.ComponentName
import android.content.Context
import android.os.Build.VERSION
import android.widget.Toast
import androidx.activity.ComponentActivity
import androidx.compose.foundation.layout.*
import androidx.compose.foundation.text.KeyboardActions
import androidx.compose.foundation.text.KeyboardOptions
import androidx.compose.material3.Button
import androidx.compose.material3.MaterialTheme.colorScheme
import androidx.compose.material3.MaterialTheme.typography
import androidx.compose.material3.Text
import androidx.compose.material3.TextField
import androidx.compose.runtime.*
import androidx.compose.ui.Modifier
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.platform.LocalFocusManager
import androidx.compose.ui.text.input.ImeAction
import androidx.compose.ui.text.input.KeyboardType
import androidx.compose.ui.unit.dp
import java.util.Date

@Composable
fun SysUpdatePolicy(){
    val myContext = LocalContext.current
    val myDpm = myContext.getSystemService(ComponentActivity.DEVICE_POLICY_SERVICE) as DevicePolicyManager
    val myComponent = ComponentName(myContext,MyDeviceAdminReceiver::class.java)
    val focusMgr = LocalFocusManager.current
    val sharedPref = myContext.getSharedPreferences("data", Context.MODE_PRIVATE)
    val isWear = sharedPref.getBoolean("isWear",false)
    val bodyTextStyle = if(isWear){ typography.bodyMedium}else{typography.bodyLarge}
    Column {
        if(VERSION.SDK_INT>=26&&isDeviceOwner(myDpm)){
            val sysUpdateInfo = myDpm.getPendingSystemUpdate(myComponent)
            Column(modifier = sections()) {
                if(sysUpdateInfo!=null){
                    Text(text = "Update first available: ${Date(sysUpdateInfo.receivedTime)}", style = bodyTextStyle)
                    Text(text = "Hash code: ${sysUpdateInfo.hashCode()}", style = bodyTextStyle)
                    val securityStateDesc = when(sysUpdateInfo.securityPatchState){
                        SystemUpdateInfo.SECURITY_PATCH_STATE_UNKNOWN->"SECURITY_PATCH_STATE_UNKNOWN"
                        SystemUpdateInfo.SECURITY_PATCH_STATE_TRUE->"SECURITY_PATCH_STATE_TRUE"
                        else->"SECURITY_PATCH_STATE_FALSE"
                    }
                    Text(text = "Security patch state: $securityStateDesc", style = bodyTextStyle)
                }else{
                    Text(text = "暂无系统更新", style = bodyTextStyle)
                }
            }
        }
        if(VERSION.SDK_INT>=23){
        Column(modifier = sections()) {
            var selectedPolicy by remember{ mutableStateOf(myDpm.systemUpdatePolicy?.policyType) }
            Text(text = "系统更新策略", style = typography.titleLarge, color = colorScheme.onPrimaryContainer)
            RadioButtonItem("准备好后立即更新",{selectedPolicy==SystemUpdatePolicy.TYPE_INSTALL_AUTOMATIC},{selectedPolicy=SystemUpdatePolicy.TYPE_INSTALL_AUTOMATIC})
            RadioButtonItem("在某段时间里更新",{selectedPolicy==SystemUpdatePolicy.TYPE_INSTALL_WINDOWED},{selectedPolicy=SystemUpdatePolicy.TYPE_INSTALL_WINDOWED})
            RadioButtonItem("延迟30天",{selectedPolicy==SystemUpdatePolicy.TYPE_POSTPONE},{selectedPolicy=SystemUpdatePolicy.TYPE_POSTPONE})
            RadioButtonItem("无",{selectedPolicy == null},{selectedPolicy=null})
            var windowedPolicyStart by remember{ mutableStateOf("") }
            var windowedPolicyEnd by remember{ mutableStateOf("") }
            if(selectedPolicy==2){
                Spacer(Modifier.padding(vertical = 3.dp))
                Row(modifier = Modifier.fillMaxWidth(),horizontalArrangement = Arrangement.Center) {
                    TextField(
                        value = windowedPolicyStart,
                        label = { Text("开始时间")},
                        onValueChange = {windowedPolicyStart=it},
                        keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Number, imeAction = ImeAction.Done),
                        keyboardActions = KeyboardActions(onDone = {focusMgr.clearFocus()}),
                        modifier = Modifier.fillMaxWidth(0.5F)
                    )
                    Spacer(Modifier.padding(horizontal = 3.dp))
                    TextField(
                        value = windowedPolicyEnd,
                        onValueChange = {windowedPolicyEnd=it},
                        label = {Text("结束时间")},
                        keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Number, imeAction = ImeAction.Done),
                        keyboardActions = KeyboardActions(onDone = {focusMgr.clearFocus()}),
                        modifier = Modifier.fillMaxWidth()
                    )
                }
                Spacer(Modifier.padding(vertical = 3.dp))
                Text(text = "请输入一天中的分钟（0~1440）", style = bodyTextStyle)
            }
            val policy =
                when(selectedPolicy){
                    SystemUpdatePolicy.TYPE_INSTALL_AUTOMATIC->SystemUpdatePolicy.createAutomaticInstallPolicy()
                    SystemUpdatePolicy.TYPE_INSTALL_WINDOWED->SystemUpdatePolicy.createWindowedInstallPolicy(windowedPolicyStart.toInt(),windowedPolicyEnd.toInt())
                    SystemUpdatePolicy.TYPE_POSTPONE->SystemUpdatePolicy.createPostponeInstallPolicy()
                    else->null
                }
            Button(
                onClick = {myDpm.setSystemUpdatePolicy(myComponent,policy);Toast.makeText(myContext, "成功！", Toast.LENGTH_SHORT).show()},
                enabled = isDeviceOwner(myDpm),
                modifier = Modifier.fillMaxWidth()
            ) {
                Text("应用")
            }
        }}
        /*if(VERSION.SDK_INT>=29){
            Column(modifier = sections()){
                var resultUri by remember{mutableStateOf(otaUri)}
                Text(text = "安装系统更新", style = typography.titleLarge)
                Button(
                    onClick = {
                        val getUri = Intent(Intent.ACTION_GET_CONTENT)
                        getUri.setType("application/zip")
                        getUri.addCategory(Intent.CATEGORY_OPENABLE)
                        getOtaPackage.launch(getUri)
                    },
                    modifier = Modifier.fillMaxWidth(),
                    enabled = isDeviceOwner(myDpm)||isProfileOwner(myDpm)
                ) {
                    Text("选择OTA包")
                }
                Button(
                    onClick = {resultUri = otaUri},
                    modifier = Modifier.fillMaxWidth(),
                    enabled = isDeviceOwner(myDpm)||isProfileOwner(myDpm)
                ) {
                    Text("查看OTA包详情")
                }
                Text("URI: $resultUri")
                if(installOta){
                    Button(
                        onClick = {
                            val sysUpdateExecutor = Executors.newCachedThreadPool()
                            val sysUpdateCallback:InstallSystemUpdateCallback = InstallSystemUpdateCallback
                            myDpm.installSystemUpdate(myComponent,resultUri,sysUpdateExecutor,sysUpdateCallback)
                        },
                        enabled = isDeviceOwner(myDpm)||isProfileOwner(myDpm)
                    ){
                        Text("安装")
                    }
                }
            }
        }*/
    }
}