Modifier/app/src/main/java/com/example/modifier/service/TaskRunner.kt

package com.example.modifier.service

import android.content.Context
import android.text.TextUtils
import android.util.Base64
import android.util.Log
import android.view.accessibility.AccessibilityNodeInfo
import com.example.modifier.TAG
import com.example.modifier.TraverseResult
import com.example.modifier.constants.CMD_BACK
import com.example.modifier.constants.CMD_CONVERSATION_LIST_ACTIVITY
import com.example.modifier.constants.CMD_MESSAGING_APP
import com.example.modifier.constants.CMD_RCS_SETTINGS_ACTIVITY
import com.example.modifier.constants.PACKAGE_GMS
import com.example.modifier.constants.PACKAGE_MESSAGING
import com.example.modifier.data.AppPreferences
import com.example.modifier.data.AppState
import com.example.modifier.enums.RcsConfigureState
import com.example.modifier.enums.RcsConnectionStatus
import com.example.modifier.enums.RequestNumberState
import com.example.modifier.extension.kill
import com.example.modifier.http.api.DeviceApi
import com.example.modifier.http.api.RcsNumberApi
import com.example.modifier.http.api.SysConfigApi
import com.example.modifier.http.ktorClient
import com.example.modifier.http.request.RcsNumberRequest
import com.example.modifier.http.response.DeviceResponse
import com.example.modifier.http.response.RcsNumberResponse
import com.example.modifier.http.response.SysConfigResponse
import com.example.modifier.model.InstallApkAction
import com.example.modifier.model.RunScriptAction
import com.example.modifier.model.SocketCallback
import com.example.modifier.model.SpoofedSimInfo
import com.example.modifier.model.TaskAction
import com.example.modifier.model.TaskConfig
import com.example.modifier.model.TaskExecutionResult
import com.example.modifier.repo.AppPreferencesRepository
import com.example.modifier.repo.AppStateRepository
import com.example.modifier.repo.BackupRepository
import com.example.modifier.repo.GoogleMessageStateRepository
import com.example.modifier.repo.SpoofedSimInfoRepository
import com.example.modifier.serializer.Json
import com.example.modifier.utils.changeClashProfile
import com.example.modifier.utils.clearConv
import com.example.modifier.utils.genICCID
import com.example.modifier.utils.genIMEI
import com.example.modifier.utils.genIMSI
import com.example.modifier.utils.isClashInstalled
import com.example.modifier.utils.isOldVersion
import com.example.modifier.utils.resetAll
import com.example.modifier.utils.shellRun
import com.example.modifier.utils.smsIntent
import com.example.modifier.utils.spoofSmsIntent
import com.example.modifier.utils.stopClash
import com.example.modifier.utils.uniqueId
import io.ktor.client.HttpClient
import io.ktor.client.call.body
import io.ktor.client.engine.okhttp.OkHttp
import io.ktor.client.plugins.HttpResponseValidator
import io.ktor.client.plugins.ServerResponseException
import io.ktor.client.plugins.resources.get
import io.ktor.client.plugins.resources.post
import io.ktor.client.plugins.resources.put
import io.ktor.client.plugins.timeout
import io.ktor.client.request.prepareGet
import io.ktor.client.request.setBody
import io.ktor.http.ContentType
import io.ktor.http.contentType
import io.ktor.utils.io.ByteReadChannel
import io.ktor.utils.io.core.isEmpty
import io.ktor.utils.io.core.readBytes
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.delay
import kotlinx.coroutines.flow.StateFlow
import kotlinx.coroutines.launch
import kotlinx.coroutines.withContext
import kotlinx.coroutines.withTimeout
import kotlinx.coroutines.withTimeoutOrNull
import kotlinx.serialization.encodeToString
import org.json.JSONObject
import java.io.File
import java.time.LocalDateTime
import java.time.temporal.ChronoUnit
import kotlin.time.Duration.Companion.days
import kotlin.time.Duration.Companion.hours
import kotlin.time.Duration.Companion.minutes
import kotlin.time.Duration.Companion.seconds

class TaskRunner(
    private val context: Context,
    private val screenInspector: ScreenInspector,
    private val screenController: ScreenController,
    private val appStateRepository: AppStateRepository,
    private val appPreferencesRepository: AppPreferencesRepository,
    private val spoofedSimInfoRepository: SpoofedSimInfoRepository,
    private val googleMessageStateRepository: GoogleMessageStateRepository,
    private val backupRepository: BackupRepository
) {
    private var lastSend = 0L
    private var currentTaskId = 0
    private var requestMode = 1
    private lateinit var appState: StateFlow<AppState>
    private lateinit var appPreferences: StateFlow<AppPreferences>
    private lateinit var spoofedSimInfo: StateFlow<SpoofedSimInfo>

    init {
        CoroutineScope(Dispatchers.IO).launch {
            appState = appStateRepository.stateFlow()
            appPreferences = appPreferencesRepository.stateFlow()
            spoofedSimInfo = spoofedSimInfoRepository.stateFlow()
        }
    }

    suspend fun send(
        to: String,
        body: String,
        taskConfig: TaskConfig
    ): Boolean {
        Log.i(TAG, "Sending SMS to $to: $body")
        context.startActivity(smsIntent(to, body))
        try {
            Log.i(
                TAG,
                "Command executed successfully, waiting for app to open..."
            )
            delay(1000)
            var success = false
            var traverseResult = TraverseResult()
            withTimeoutOrNull(taskConfig.rcsWait) {
                while (true) {
                    traverseResult = TraverseResult()
                    screenInspector.traverseNode(traverseResult)
                    if (traverseResult.isRcsCapable && traverseResult.sendBtn != null) {
                        if (!taskConfig.endToEndEncryption || traverseResult.encrypted) {
                            break
                        }
                    }
                    delay(200)
                }
            }
            if (traverseResult.isRcsCapable) {
                if (traverseResult.sendBtn == null) {
                    Log.i(TAG, "Send button not found")
                } else {
                    Log.i(TAG, "Clicking send button")

                    val dt = System.currentTimeMillis() - lastSend
                    if (taskConfig.rcsInterval > 0 && dt < taskConfig.rcsInterval) {
                        Log.i(TAG, "Waiting for RCS interval")
                        delay(taskConfig.rcsInterval - dt)
                    }
                    traverseResult.sendBtn!!.performAction(AccessibilityNodeInfo.ACTION_CLICK)
                    lastSend = System.currentTimeMillis()
                    success = true
                }
            } else {
                Log.i(TAG, "RCS not detected")
            }
            appStateRepository.incrementExecutedNum(success)
            Log.i(
                TAG,
                "executedNum: ${appState.value.executedNum}, successNum: ${appState.value.successNum}"
            )
            delay(1000)
            return success
        } catch (e: Exception) {
            e.printStackTrace()
        }
        return false
    }

    suspend fun runTask(
        taskAction: TaskAction,
        onSuccess: (TaskExecutionResult) -> Unit,
        onError: (Exception) -> Unit
    ) {
        if (appState.value.busy) {
            onError(Exception("device busy"))
            return
        }

        try {
            val taskConfig = taskAction.data.config
            currentTaskId = taskAction.data.taskId
            requestMode = if (taskAction.data.config.useBackup) 2 else 1

            if (taskAction.data.config.checkConnection) {
                appStateRepository.updateRuntimeFlags(checkingConnection = true)
                if (!checkRcsAvailability()) {
                    onError(Exception("RCS not available"))
                    requestNumber()
                    appStateRepository.updateRuntimeFlags(checkingConnection = false)
                    return
                }
                appStateRepository.updateRuntimeFlags(checkingConnection = false)
            }

            appStateRepository.updateRuntimeFlags(running = true, checkingConnection = false)
            val success = ArrayList<Int>()
            val fail = ArrayList<Int>()
            for (i in 0 until taskAction.data.tasks.size) {
                val taskItem = taskAction.data.tasks[i]
                try {
                    if (send(
                            taskItem.number,
                            taskItem.message,
                            taskConfig
                        )
                    ) {
                        success.add(taskItem.id)
                    } else {
                        fail.add(taskItem.id)
                    }
                } catch (e: Exception) {
                    Log.e(TAG, "runTaskError: ${e.message}", e)
                    fail.add(taskItem.id)
                }
            }
            shellRun(CMD_BACK)
            onSuccess(TaskExecutionResult(success, fail))
            if (taskConfig.requestNumberInterval in 1..appState.value.successNum) {
                delay(3000)
                requestNumber()
            } else if (taskConfig.cleanCount in 1..appState.value.executedNum && !appPreferences.value.preventClean) {
                delay(3000)
                clearConv();
                shellRun(CMD_MESSAGING_APP)
                delay(3000)
                appStateRepository.resetExecutedNum()
            } else {
                delay(2000)
            }
            appStateRepository.updateRuntimeFlags(running = false)
        } catch (e: Exception) {
            Log.e(TAG, "runTaskError: ${e.message}", e)
            onError(e)
            appStateRepository.updateRuntimeFlags(running = false)
        }
    }

    suspend fun reset() {
        if (isOldVersion(context)) {
            withTimeout(1.hours) {
                while (true) {
                    delay(100)
                    appStateRepository.updateRuntimeFlags(requestNumberState = RequestNumberState.RESET)
                    googleMessageStateRepository.updateRcsState(RcsConfigureState.NOT_CONFIGURED)
                    spoofedSimInfoRepository.mock()
                    resetAll()
                    var switchAppear = googleMessageStateRepository.waitForRcsState(
                        arrayOf(RcsConfigureState.WAITING_FOR_TOS),
                        2.minutes
                    )?.let {
                        it == RcsConfigureState.WAITING_FOR_TOS
                    }
                    if (switchAppear != true) {
                        shellRun(
                            PACKAGE_GMS.kill(), PACKAGE_MESSAGING.kill(), "sleep 1",
                            CMD_MESSAGING_APP
                        )
                        switchAppear = googleMessageStateRepository.waitForRcsState(
                            arrayOf(RcsConfigureState.WAITING_FOR_TOS),
                            5.minutes
                        )?.let {
                            it == RcsConfigureState.WAITING_FOR_TOS
                        }
                        if (switchAppear != true) {
                            Log.e(
                                TAG,
                                "RCS not entered default on state, retrying..."
                            )
                            continue
                        }
                    }
                    if (!screenController.toggleRcsSwitch(false)) {
                        Log.e(TAG, "RCS switch not turned off, retrying...")
                        continue
                    }
                    if (!screenController.toggleRcsSwitch(true)) {
                        Log.e(TAG, "RCS switch not turned on, retrying...")
                        continue
                    }
                    var resetSuccess = googleMessageStateRepository.waitForRcsState(
                        arrayOf(
                            RcsConfigureState.READY
                        ), 30.seconds
                    ).let { it == RcsConfigureState.READY }
                    if (!resetSuccess) {
                        screenController.toggleRcsSwitch(false)
                        delay(1000)
                        screenController.toggleRcsSwitch(true)
                        resetSuccess = googleMessageStateRepository.waitForRcsState(
                            arrayOf(
                                RcsConfigureState.READY
                            ), 1.minutes
                        ).let { it == RcsConfigureState.READY }
                    }
                    Log.i(TAG, "waitForRcsState: $resetSuccess")
                    appStateRepository.resetRequestedNum()
                    if (resetSuccess) {
                        delay(3000)
                        break
                    }
                }
            }
        } else {
            withTimeout(1.hours) {
                while (true) {
                    delay(100)
                    appStateRepository.updateRuntimeFlags(requestNumberState = RequestNumberState.RESET)
                    googleMessageStateRepository.updateRcsState(RcsConfigureState.NOT_CONFIGURED)
                    spoofedSimInfoRepository.mock()
                    resetAll()
                    var switchAppear = googleMessageStateRepository.waitForRcsState(
                        arrayOf(RcsConfigureState.WAITING_FOR_DEFAULT_ON),
                        1.minutes
                    )?.let {
                        it == RcsConfigureState.WAITING_FOR_DEFAULT_ON
                    }
                    if (switchAppear != true) {
                        shellRun(
                            PACKAGE_GMS.kill(), PACKAGE_MESSAGING.kill(), "sleep 1",
                            CMD_MESSAGING_APP
                        )
                        switchAppear = googleMessageStateRepository.waitForRcsState(
                            arrayOf(RcsConfigureState.WAITING_FOR_DEFAULT_ON),
                            2.minutes
                        )?.let {
                            it == RcsConfigureState.WAITING_FOR_DEFAULT_ON
                        }
                        if (switchAppear != true) {
                            Log.e(
                                TAG,
                                "RCS not entered default on state, retrying..."
                            )
                            continue
                        }
                    }
                    val switchOn = screenController.toggleRcsSwitch(true)
                    if (!switchOn) {
                        Log.e(TAG, "RCS switch not turned on, retrying...")
                        continue
                    }
                    var resetSuccess = googleMessageStateRepository.waitForRcsState(
                        arrayOf(
                            RcsConfigureState.READY
                        ), 30.seconds
                    ).let { it == RcsConfigureState.READY }
                    if (!resetSuccess) {
                        screenController.toggleRcsSwitch(false)
                        delay(1000)
                        screenController.toggleRcsSwitch(true)
                        resetSuccess = googleMessageStateRepository.waitForRcsState(
                            arrayOf(
                                RcsConfigureState.READY
                            ), 1.minutes
                        ).let { it == RcsConfigureState.READY }
                    }
                    Log.i(TAG, "waitForRcsState: $resetSuccess")
                    appStateRepository.resetRequestedNum()
                    if (resetSuccess) {
                        delay(3000)
                        break
                    }
                }
            }
        }
    }

    suspend fun requestNumber(
        reset: Boolean = false,
        noBackup: Boolean = false,
        fresh: Boolean = false
    ) {
        appStateRepository.updateRuntimeFlags(suspended = false)
        if (appPreferences.value.preventRequest) {
            return
        }
        if (appState.value.requesting) {
            return
        }

        appStateRepository.updateRuntimeFlags(requesting = true)

        if (spoofedSimInfo.value.available) {
            backupRepository.backup(
                spoofedSimInfo = spoofedSimInfo.value,
                type = "auto",
                sendCount = appState.value.executedNum,
                fresh = fresh
            )
        } else {
            clearConv();
        }

        appStateRepository.incrementRequestedNum()
        var requestSuccess = false
        var retry = 0
        var needRest = reset
        withTimeoutOrNull(2.hours) {
            while (true) {
                delay(200)
                needRest = needRest || retry > 2 || appState.value.requestedNum > 5
                try {
                    val device =
                        ktorClient(appPreferences.value.server).get(DeviceApi.Id(id = uniqueId))
                            .body<DeviceResponse>()
                    if (isClashInstalled(context)) {

                        val prefs = context.getSharedPreferences("settings", Context.MODE_PRIVATE)
                        if (TextUtils.isEmpty(device.clashProfile)) {
                            prefs.edit()
                                .remove("clash_profile")
                                .apply()
                            stopClash()
                        } else {
                            val oldProfile = prefs.getString("clash_profile", "")
                            if (oldProfile != device.clashProfile) {
                                prefs.edit()
                                    .putString("clash_profile", device.clashProfile)
                                    .apply()
                                changeClashProfile(
                                    device.pinCountry!!, Base64.encodeToString(
                                        device.clashProfile!!.toByteArray(),
                                        Base64.DEFAULT
                                    )
                                )
                                delay(5000)
                            }
                        }
                    }

                    if (requestMode == 2 && !noBackup) {
                        val backup = backupRepository.findBackupForRestore(
                            spoofedSimInfo.value.number,
                            System.currentTimeMillis() - 2.days.inWholeMilliseconds
                        )
                        if (backup != null) {
                            if (backupRepository.restore(backup)) {
                                requestSuccess = true
                                break
                            } else {
                                backupRepository.backup(
                                    spoofedSimInfo = spoofedSimInfo.value,
                                    type = "auto",
                                    sendCount = 0
                                )
                                continue
                            }
                        }
                    }

                    if (needRest && !appPreferences.value.preventReset) {
                        reset()
                        retry = 0
                        needRest = false
                    }

                    googleMessageStateRepository.updateRcsState(RcsConfigureState.NOT_CONFIGURED)
                    appStateRepository.updateRuntimeFlags(requestNumberState = RequestNumberState.REQUEST)

                    val req = RcsNumberRequest(
                        deviceId = uniqueId,
                        taskId = currentTaskId
                    )
                    if (!TextUtils.isEmpty(device.pinCountry)) {
                        req.country = device.pinCountry
                    }
                    val response = ktorClient(appPreferences.value.server).put(
                        RcsNumberApi()
                    ) {
                        contentType(ContentType.Application.Json)
                        setBody(req)
                        timeout {
                            requestTimeoutMillis = 60 * 1000
                            socketTimeoutMillis = 60 * 1000
                        }
                    }
                    var rcsNumber = response.body<RcsNumberResponse>()
                    Log.i(TAG, "requestNumber response: $rcsNumber")

                    appStateRepository.updateRuntimeFlags(requestNumberState = RequestNumberState.OTP_1)

                    spoofedSimInfoRepository.updateSpoofedSimInfo(
                        SpoofedSimInfo(
                            number = rcsNumber.number,
                            mcc = rcsNumber.mcc,
                            mnc = rcsNumber.mnc,
                            iccid = genICCID(rcsNumber.mnc, rcsNumber.areaCode),
                            imsi = genIMSI(rcsNumber.mcc + rcsNumber.mnc),
                            imei = genIMEI(),
                            country = rcsNumber.country,
                            areaCode = rcsNumber.areaCode,
                            available = false,
                            carrierId = rcsNumber.carrierId,
                            carrierName = rcsNumber.carrierName,
                        )
                    )

                    shellRun(CMD_MESSAGING_APP)

                    if (rcsNumber.expiryTime.isBefore(LocalDateTime.now())) {
                        Log.e(TAG, "RCS number expired, retrying...")
                        continue
                    }
                    var sendOtpTimeout = ChronoUnit.SECONDS.between(
                        LocalDateTime.now(),
                        rcsNumber.expiryTime
                    ).seconds
                    if (sendOtpTimeout < 60.seconds) {
                        Log.e(TAG, "OTP timeout too short, retrying...")
                        continue
                    }
                    if (sendOtpTimeout > 2.minutes) {
                        sendOtpTimeout = 2.minutes
                    }
                    if (googleMessageStateRepository.waitForRcsState(
                            arrayOf(RcsConfigureState.WAITING_FOR_OTP),
                            sendOtpTimeout
                        ) != RcsConfigureState.WAITING_FOR_OTP
                    ) {
                        if (!screenController.toggleRcsSwitch(true)) {
                            needRest = true
                        }
                        if (RcsConfigureState.REPLAY_REQUEST == googleMessageStateRepository.rcsConfigureState.value) {
                            Log.e(TAG, "REPLAY_REQUEST detected, may reset after 3 retry ($retry)")
                            retry++
                        }
                        Log.e(TAG, "RCS not entered waiting for OTP state, retrying...")
                        continue
                    }

                    launch {
                        try {
                            ktorClient(appPreferences.value.server).post(
                                RcsNumberApi.Id.OtpState(
                                    RcsNumberApi.Id(
                                        RcsNumberApi(),
                                        rcsNumber.id
                                    )
                                )
                            )
                        } catch (e: Exception) {
                            Log.e(TAG, "Send OtpState Error: ${e.message}", e)
                        }
                    }

                    if (rcsNumber.expiryTime.isBefore(LocalDateTime.now())) {
                        Log.e(TAG, "RCS number expired, retrying...")
                        continue
                    }

                    appStateRepository.updateRuntimeFlags(requestNumberState = RequestNumberState.OTP_2)
                    withTimeoutOrNull(60.seconds) {
                        while (true) {
                            try {
                                rcsNumber =
                                    ktorClient(appPreferences.value.server).get(RcsNumberApi.Id(id = rcsNumber.id))
                                        .body<RcsNumberResponse>()
                                Log.i(TAG, "wait for otp response: $rcsNumber")
                                if (rcsNumber.status == RcsNumberResponse.STATUS_SUCCESS || rcsNumber.status == RcsNumberResponse.STATUS_EXPIRED) {
                                    break
                                }
                            } catch (exception: Exception) {
                                Log.e(TAG, "wait for otp Error: ${exception.stackTrace}")
                            }
                            delay(2.seconds)
                        }
                    }

                    if (rcsNumber.status != RcsNumberResponse.STATUS_SUCCESS) {
                        Log.e(TAG, "OTP not received, retrying...")
                        continue
                    }

                    val match =
                        Regex("Your Messenger verification code is G-(\\d{6})")
                            .find(rcsNumber.message!!)
                    if (match != null) {
                        appStateRepository.updateRuntimeFlags(requestNumberState = RequestNumberState.CONFIG)

                        val otp = match.groupValues[1]
                        Log.i(TAG, "OTP: $otp")
                        val sender = "3538"
                        val msg = "Your Messenger verification code is G-$otp"

                        val configured = run configuring@{
                            repeat(2) {
                                spoofSmsIntent(sender, msg)
                                val state =
                                    googleMessageStateRepository.waitForRcsState(
                                        arrayOf(
                                            RcsConfigureState.CONFIGURED,
                                            RcsConfigureState.RETRY
                                        ), 60.seconds
                                    )
                                when (state) {
                                    RcsConfigureState.CONFIGURED -> {
                                        return@configuring true
                                    }

                                    RcsConfigureState.RETRY -> {
                                        googleMessageStateRepository.waitForRcsState(
                                            arrayOf(RcsConfigureState.WAITING_FOR_OTP),
                                            60.seconds
                                        )
                                    }

                                    else -> {
                                        Log.e(TAG, "verifyOtp fail, retrying...")
                                    }
                                }
                            }
                            false
                        }
                        if (!configured) {
                            Log.e(TAG, "RCS not configured, retrying...")
                            continue
                        } else {
                            launch {
                                try {
                                    ktorClient(appPreferences.value.server).post(
                                        RcsNumberApi.Id.Configured(
                                            RcsNumberApi.Id(
                                                RcsNumberApi(),
                                                rcsNumber.id
                                            )
                                        )
                                    )
                                } catch (e: Exception) {
                                    Log.e(
                                        TAG,
                                        "Send ConfiguredState Error: ${e.message}",
                                        e
                                    )
                                }
                            }
                            requestSuccess = true
                            break
                        }
                    }
                } catch (e: Exception) {
                    Log.e(TAG, "requestNumberError: ${e.message}", e)
                }
            }
        }
        if (requestSuccess) {
            spoofedSimInfoRepository.updateSpoofedSimInfo(
                spoofedSimInfo = spoofedSimInfo.value.copy(
                    available = true
                )
            )
            appStateRepository.resetSuccessNum()
            appStateRepository.resetExecutedNum()
            Log.i(TAG, "requestNumber success")
            delay(5000)
            shellRun(PACKAGE_MESSAGING.kill(), "sleep 1", CMD_MESSAGING_APP)
            delay(2000)
        } else {
            Log.e(TAG, "requestNumber failed")
            appStateRepository.updateSend(false)
        }
        appStateRepository.updateRuntimeFlags(
            requesting = false,
            requestNumberState = RequestNumberState.IDLE,
            suspended = !requestSuccess
        )
    }

    private suspend fun checkRcsConnectivity(): Boolean = run checkRcsConnection@{
        repeat(3) {
            Log.i(TAG, "Checking RCS status...")
            shellRun(
                CMD_CONVERSATION_LIST_ACTIVITY,
                CMD_RCS_SETTINGS_ACTIVITY,
                "sleep 1",
            )
            val res = TraverseResult()
            screenInspector.traverseNode(res)
            if (res.rcsConnectionStatus == RcsConnectionStatus.CONNECTED) {
                Log.i(TAG, "RCS is connected")
                shellRun(CMD_BACK)
                return@checkRcsConnection true
            } else {
                Log.i(TAG, "RCS not connected, retrying...")
            }
            shellRun(CMD_BACK, "sleep ${it * 2}")
        }
        false
    }

    suspend fun checkRcsAvailability(): Boolean {
        val availability = run checkAvailability@{
            val rcsConnected = checkRcsConnectivity()
            if (!rcsConnected) {
                return@checkAvailability false
            }

            val checkRcsAvailabilityNumbers = mutableListOf<String>()
            try {
                val config = ktorClient(appPreferences.value.server).get(
                    SysConfigApi.Id(
                        SysConfigApi(),
                        "check_availability_numbers"
                    )
                )
                    .body<SysConfigResponse>()
                Log.i(TAG, "sysConfig response: $config")
                checkRcsAvailabilityNumbers.addAll(
                    config.value.split(",").map { it.trim() })
            } catch (exception: Exception) {
                Log.e(
                    TAG,
                    "sysConfig Error: ${exception.message}",
                    exception
                )
            }

            if (checkRcsAvailabilityNumbers.isEmpty()) {
                Log.e(TAG, "checkRcsAvailabilityNumbers is empty")
                return@checkAvailability true
            }

            checkRcsAvailabilityNumbers.forEach {
                context.startActivity(smsIntent(it, ""))
                val s = withTimeoutOrNull(5.seconds) {
                    while (true) {
                        val traverseResult = TraverseResult()
                        screenInspector.traverseNode(traverseResult)
                        if (traverseResult.isRcsCapable) {
                            return@withTimeoutOrNull true
                        } else {
                            Log.i(
                                TAG,
                                "checkRcsAvailability: RCS not detected"
                            )
                        }
                        delay(200)
                    }
                }
                if (s == true) {
                    Log.i(TAG, "checkRcsAvailability: $it success")
                    delay(1000)
                    return@checkAvailability true
                }
            }
            false
        }
        return availability
    }

    suspend fun installApk(
        installApkAction: InstallApkAction,
        onSuccess: () -> Unit,
        onError: (Exception) -> Unit
    ) {
        try {
            val file = withContext(Dispatchers.IO) {
                File.createTempFile("files", ".apk")
            }

            HttpClient(OkHttp) {
                HttpResponseValidator {
                    validateResponse { response ->
                        if (response.status.value !in 200..299) {
                            throw ServerResponseException(
                                response,
                                "Error " + response.status.value.toString()
                            )
                        }
                    }
                }
            }.prepareGet(installApkAction.data.apkUrl)
                .execute { httpResponse ->
                    val channel: ByteReadChannel = httpResponse.body()
                    while (!channel.isClosedForRead) {
                        val packet = channel.readRemaining(DEFAULT_BUFFER_SIZE.toLong())
                        while (!packet.isEmpty) {
                            val bytes = packet.readBytes()
                            file.appendBytes(bytes)
                        }
                    }
                }
            Log.i(TAG, "Apk file saved to ${file.path}")
            shellRun("pm install -d -r ${file.path}")
            onSuccess()
            file.delete()
        } catch (e: Exception) {
            Log.e("Modifier", "Failed to install apk", e)
            onError(e)
        }
    }

    suspend fun runScript(
        installApkAction: RunScriptAction,
        onSuccess: (String, String) -> Unit,
        onError: (Exception) -> Unit
    ) {
        try {
            val (out, err) = shellRun(*installApkAction.data.script.split("\n").toTypedArray())
            onSuccess(out, err)
        } catch (e: Exception) {
            Log.e("Modifier", "Failed to install apk", e)
            onError(e)
        }
    }
}