544 lines
23 KiB
Kotlin
544 lines
23 KiB
Kotlin
package cy.agorise.bitsybitshareswallet.fragments
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import android.Manifest
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import android.content.pm.PackageManager
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import android.os.Bundle
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import android.os.Handler
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import android.preference.PreferenceManager
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import android.util.Log
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import android.view.*
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import android.widget.AdapterView
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import android.widget.Toast
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import androidx.appcompat.widget.Toolbar
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import androidx.core.content.ContextCompat
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import androidx.lifecycle.Observer
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import androidx.lifecycle.ViewModelProviders
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import androidx.navigation.fragment.findNavController
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import androidx.navigation.fragment.navArgs
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import com.afollestad.materialdialogs.MaterialDialog
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import com.afollestad.materialdialogs.customview.customView
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import com.google.common.primitives.UnsignedLong
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import com.google.zxing.BarcodeFormat
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import com.google.zxing.Result
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import com.jakewharton.rxbinding3.widget.textChanges
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import cy.agorise.bitsybitshareswallet.R
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import cy.agorise.bitsybitshareswallet.adapters.BalancesDetailsAdapter
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import cy.agorise.bitsybitshareswallet.database.joins.BalanceDetail
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import cy.agorise.bitsybitshareswallet.repositories.AuthorityRepository
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import cy.agorise.bitsybitshareswallet.utils.*
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import cy.agorise.bitsybitshareswallet.viewmodels.BalanceDetailViewModel
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import cy.agorise.graphenej.*
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import cy.agorise.graphenej.api.ConnectionStatusUpdate
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import cy.agorise.graphenej.api.calls.BroadcastTransaction
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import cy.agorise.graphenej.api.calls.GetAccountByName
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import cy.agorise.graphenej.api.calls.GetDynamicGlobalProperties
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import cy.agorise.graphenej.api.calls.GetRequiredFees
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import cy.agorise.graphenej.crypto.SecureRandomGenerator
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import cy.agorise.graphenej.models.AccountProperties
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import cy.agorise.graphenej.models.DynamicGlobalProperties
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import cy.agorise.graphenej.models.JsonRpcResponse
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import cy.agorise.graphenej.operations.TransferOperation
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import cy.agorise.graphenej.operations.TransferOperationBuilder
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import io.reactivex.android.schedulers.AndroidSchedulers
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import io.reactivex.schedulers.Schedulers
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import kotlinx.android.synthetic.main.fragment_send_transaction.*
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import me.dm7.barcodescanner.zxing.ZXingScannerView
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import org.bitcoinj.core.DumpedPrivateKey
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import org.bitcoinj.core.ECKey
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import java.math.RoundingMode
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import java.text.DecimalFormat
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import java.text.DecimalFormatSymbols
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import java.util.ArrayList
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import java.util.Locale
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import java.util.concurrent.TimeUnit
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import javax.crypto.AEADBadTagException
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class SendTransactionFragment : ConnectedFragment(), ZXingScannerView.ResultHandler {
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companion object {
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private const val TAG = "SendTransactionFragment"
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// Camera Permission
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private const val REQUEST_CAMERA_PERMISSION = 1
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// Constants used to organize NetworkService requests
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private const val RESPONSE_GET_ACCOUNT_BY_NAME = 1
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private const val RESPONSE_GET_DYNAMIC_GLOBAL_PARAMETERS = 2
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private const val RESPONSE_GET_REQUIRED_FEES = 3
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private const val RESPONSE_BROADCAST_TRANSACTION = 4
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}
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// Navigation AAC Safe Args
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private val args: SendTransactionFragmentArgs by navArgs()
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/** Variables used in field's validation */
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private var isCameraPreviewVisible = false
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private var isToAccountCorrect = false
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private var isAmountCorrect = false
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private var mBalancesDetails = ArrayList<BalanceDetail>()
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private lateinit var mBalanceDetailViewModel: BalanceDetailViewModel
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private var mBalancesDetailsAdapter: BalancesDetailsAdapter? = null
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/** Keeps track of the asset's symbol selected in the Asset spinner */
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private var selectedAssetSymbol = "BTS"
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/** Current user account */
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private var mUserAccount: UserAccount? = null
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/** User account to which send the funds */
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private var mSelectedUserAccount: UserAccount? = null
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// Map used to keep track of request and response id pairs
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private val responseMap = HashMap<Long, Int>()
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/** Transaction being built */
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private var transaction: Transaction? = null
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/** Variable holding the current user's private key in the WIF format */
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private var wifKey: String? = null
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/** Repository to access and update Authorities */
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private var authorityRepository: AuthorityRepository? = null
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/** This is one of the recipient account's public key, it will be used for memo encoding */
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private var destinationPublicKey: PublicKey? = null
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override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
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setHasOptionsMenu(true)
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val nightMode = PreferenceManager.getDefaultSharedPreferences(context)
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.getBoolean(Constants.KEY_NIGHT_MODE_ACTIVATED, false)
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// Sets the toolbar background color to red
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val toolbar: Toolbar? = activity?.findViewById(R.id.toolbar)
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toolbar?.setBackgroundResource(if (!nightMode) R.color.colorSend else R.color.colorToolbarDark)
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// Sets the status bar background color to a dark red
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val window = activity?.window
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window?.statusBarColor = ContextCompat.getColor(context!!,
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if (!nightMode) R.color.colorSendDark else R.color.colorStatusBarDark)
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return inflater.inflate(R.layout.fragment_send_transaction, container, false)
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}
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override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
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super.onViewCreated(view, savedInstanceState)
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val userId = PreferenceManager.getDefaultSharedPreferences(context)
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.getString(Constants.KEY_CURRENT_ACCOUNT_ID, "") ?: ""
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if (userId != "")
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mUserAccount = UserAccount(userId)
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// Use Navigation SafeArgs to decide if we should activate or not the camera feed
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if (args.openCamera) {
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// Delay the camera action to avoid flicker in the fragment transition
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Handler().postDelayed({
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run { verifyCameraPermission() }
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}, 500)
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}
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fabOpenCamera.setOnClickListener { if (isCameraPreviewVisible) stopCameraPreview() else verifyCameraPermission() }
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// Configure BalanceDetailViewModel to show the current balances
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mBalanceDetailViewModel = ViewModelProviders.of(this).get(BalanceDetailViewModel::class.java)
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mBalanceDetailViewModel.getAll().observe(this, Observer<List<BalanceDetail>> { balancesDetails ->
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mBalancesDetails.clear()
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mBalancesDetails.addAll(balancesDetails)
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mBalancesDetails.sortWith(
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Comparator { a, b -> a.toString().compareTo(b.toString(), true) }
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)
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mBalancesDetailsAdapter = BalancesDetailsAdapter(context!!, android.R.layout.simple_spinner_item, mBalancesDetails)
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spAsset.adapter = mBalancesDetailsAdapter
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// Try to select the selectedAssetSymbol
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for (i in 0 until mBalancesDetailsAdapter!!.count) {
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if (mBalancesDetailsAdapter!!.getItem(i)!!.symbol == selectedAssetSymbol) {
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spAsset.setSelection(i)
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break
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}
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}
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})
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spAsset.onItemSelectedListener = assetItemSelectedListener
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fabSendTransaction.setOnClickListener { startSendTransferOperation() }
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fabSendTransaction.disable(R.color.lightGray)
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authorityRepository = AuthorityRepository(context!!)
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// Obtain the WifKey from the db, which is used in the Send Transfer procedure
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mDisposables.add(
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authorityRepository!!.getWIF(userId, AuthorityType.ACTIVE.ordinal)
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.subscribeOn(Schedulers.computation())
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.observeOn(AndroidSchedulers.mainThread())
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.subscribe { encryptedWIF ->
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try {
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wifKey = CryptoUtils.decrypt(context!!, encryptedWIF)
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} catch (e: AEADBadTagException) {
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Log.e(TAG, "AEADBadTagException. Class: " + e.javaClass + ", Msg: " + e.message)
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}
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}
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)
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// Use RxJava Debounce to avoid making calls to the NetworkService on every text change event
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mDisposables.add(
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tietTo.textChanges()
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.skipInitialValue()
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.debounce(500, TimeUnit.MILLISECONDS)
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.map { it.toString().trim() }
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.subscribe {
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val id = mNetworkService?.sendMessage(GetAccountByName(it!!), GetAccountByName.REQUIRED_API)
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if (id != null) responseMap[id] = RESPONSE_GET_ACCOUNT_BY_NAME
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}
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)
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// Use RxJava Debounce to update the Amount error only after the user stops writing for > 500 ms
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mDisposables.add(
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tietAmount.textChanges()
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.skipInitialValue()
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.debounce(500, TimeUnit.MILLISECONDS)
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.observeOn(AndroidSchedulers.mainThread())
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.subscribe { validateAmount() }
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)
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}
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/** Handles the selection of items in the Asset spinner, to keep track of the selectedAssetSymbol and show the
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* current user's balance of the selected asset. */
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private val assetItemSelectedListener = object : AdapterView.OnItemSelectedListener{
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override fun onNothingSelected(parent: AdapterView<*>?) { }
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override fun onItemSelected(parent: AdapterView<*>?, view: View?, position: Int, id: Long) {
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val balance = mBalancesDetailsAdapter!!.getItem(position)!!
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selectedAssetSymbol = balance.symbol
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val amount = balance.amount.toDouble() / Math.pow(10.0, balance.precision.toDouble())
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tvAvailableAssetAmount.text =
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String.format("%." + Math.min(balance.precision, 8) + "f %s", amount, balance.toString())
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validateAmount()
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}
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}
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override fun handleJsonRpcResponse(response: JsonRpcResponse<*>) {
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if (responseMap.containsKey(response.id)) {
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val responseType = responseMap[response.id]
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when (responseType) {
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RESPONSE_GET_ACCOUNT_BY_NAME -> handleAccountProperties(response.result)
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RESPONSE_GET_DYNAMIC_GLOBAL_PARAMETERS -> handleDynamicGlobalProperties(response.result)
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RESPONSE_GET_REQUIRED_FEES -> handleRequiredFees(response.result)
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RESPONSE_BROADCAST_TRANSACTION -> handleBroadcastTransaction(response)
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}
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responseMap.remove(response.id)
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}
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}
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override fun handleConnectionStatusUpdate(connectionStatusUpdate: ConnectionStatusUpdate) {
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if (connectionStatusUpdate.updateCode == ConnectionStatusUpdate.DISCONNECTED) {
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// If we got a disconnection notification, we should clear our response map, since
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// all its stored request ids will now be reset
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responseMap.clear()
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}
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}
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/** Handles the result of the [GetAccountByName] api call to find out if the account written in the To text
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* field corresponds to an actual BitShares account or not and acts accordingly */
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private fun handleAccountProperties(result: Any?) {
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if (result is AccountProperties) {
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mSelectedUserAccount = UserAccount(result.id, result.name)
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destinationPublicKey = result.active.keyAuths.keys.iterator().next()
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tilTo.isErrorEnabled = false
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isToAccountCorrect = true
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} else {
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mSelectedUserAccount = null
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destinationPublicKey = null
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tilTo.error = getString(R.string.error__invalid_account)
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isToAccountCorrect = false
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}
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enableDisableSendFAB()
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}
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/** Handles the result of the [GetDynamicGlobalProperties] api call to add the needed metadata to the [Transaction]
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* the app is building and ultimately send, if everything is correct adds the needed info to the [Transaction] and
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* calls the next step which is [GetRequiredFees] else it shows an error */
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private fun handleDynamicGlobalProperties(result: Any?) {
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if (result is DynamicGlobalProperties) {
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val expirationTime = (result.time.time / 1000) + Transaction.DEFAULT_EXPIRATION_TIME
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val headBlockId = result.head_block_id
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val headBlockNumber = result.head_block_number
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transaction!!.blockData = BlockData(headBlockNumber, headBlockId, expirationTime)
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val asset = Asset(mBalancesDetailsAdapter!!.getItem(spAsset.selectedItemPosition)!!.id)
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val id = mNetworkService?.sendMessage(GetRequiredFees(transaction!!, asset), GetRequiredFees.REQUIRED_API)
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if (id != null) responseMap[id] = RESPONSE_GET_REQUIRED_FEES
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} else {
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context?.toast(getString(R.string.msg__transaction_not_sent))
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}
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}
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/** Handles the result of the [GetRequiredFees] api call to add the fees to the [Transaction] the app is building
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* and ultimately send, and if everything is correct broadcasts the [Transaction] else it shows an error */
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private fun handleRequiredFees(result: Any?) {
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if (result is List<*> && result[0] is AssetAmount) {
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Log.d(TAG, "GetRequiredFees: " + transaction.toString())
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transaction!!.setFees(result as List<AssetAmount>) // TODO find how to remove this warning
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val id = mNetworkService?.sendMessage(BroadcastTransaction(transaction), BroadcastTransaction.REQUIRED_API)
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if (id != null) responseMap[id] = RESPONSE_BROADCAST_TRANSACTION
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} else {
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context?.toast(getString(R.string.msg__transaction_not_sent))
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}
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}
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/** Handles the result of the [BroadcastTransaction] api call to find out if the Transaction was sent successfully
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* or not and acts accordingly */
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private fun handleBroadcastTransaction(message: JsonRpcResponse<*>) {
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if (message.result == null && message.error == null) {
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context?.toast(getString(R.string.text__transaction_sent))
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// Return to the main screen
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findNavController().navigateUp()
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} else if (message.error != null) {
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context?.toast(message.error.message, Toast.LENGTH_LONG)
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}
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}
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/** Verifies if the user has already granted the Camera permission, if not the asks for it */
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private fun verifyCameraPermission() {
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if (ContextCompat.checkSelfPermission(activity!!, Manifest.permission.CAMERA)
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!= PackageManager.PERMISSION_GRANTED) {
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// Permission is not already granted
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requestPermissions(arrayOf(android.Manifest.permission.CAMERA), REQUEST_CAMERA_PERMISSION)
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} else {
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// Permission is already granted
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startCameraPreview()
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}
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}
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/** Handles the result from the camera permission request */
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override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
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super.onRequestPermissionsResult(requestCode, permissions, grantResults)
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if (requestCode == REQUEST_CAMERA_PERMISSION) {
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if ((grantResults.isNotEmpty() && grantResults[0] == PackageManager.PERMISSION_GRANTED)) {
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startCameraPreview()
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} else {
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context?.toast(getString(R.string.msg__camera_permission_necessary))
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}
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return
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}
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}
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private fun startCameraPreview() {
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cameraPreview.visibility = View.VISIBLE
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fabOpenCamera.setImageResource(R.drawable.ic_close)
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isCameraPreviewVisible = true
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// Configure QR scanner
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cameraPreview.setFormats(listOf(BarcodeFormat.QR_CODE))
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cameraPreview.setAspectTolerance(0.5f)
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cameraPreview.setAutoFocus(true)
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cameraPreview.setLaserColor(R.color.colorAccent)
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cameraPreview.setMaskColor(R.color.colorAccent)
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cameraPreview.setResultHandler(this)
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cameraPreview.startCamera()
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cameraPreview.scrollY = holderCamera.width / 6
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}
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private fun stopCameraPreview() {
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cameraPreview.visibility = View.INVISIBLE
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fabOpenCamera.setImageResource(R.drawable.ic_camera)
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isCameraPreviewVisible = false
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cameraPreview.stopCamera()
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}
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/** Handles the result of the QR code read from the camera and tries to populate the Account, Amount and Memo fields
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* and the Asset spinner with the obtained information */
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override fun handleResult(result: Result?) {
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try {
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val invoice = Invoice.fromQrCode(result!!.text)
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Log.d(TAG, "QR Code read: " + invoice.toJsonString())
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tietTo.setText(invoice.to)
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// Try to select the invoice's Asset in the Assets spinner
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for (i in 0 until (mBalancesDetailsAdapter?.count ?: 0)) {
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if (mBalancesDetailsAdapter?.getItem(i)?.symbol == invoice.currency.toUpperCase() ||
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(invoice.currency.startsWith("bit", true) &&
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invoice.currency.replaceFirst("bit", "").toUpperCase() ==
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mBalancesDetailsAdapter?.getItem(i)?.symbol)) {
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spAsset.setSelection(i)
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break
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}
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}
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if (invoice.memo != null) {
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tietMemo.setText(invoice.memo)
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if (invoice.memo.startsWith("PP"))
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tietMemo.isEnabled = false
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}
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var amount = 0.0
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for (nextItem in invoice.lineItems) {
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amount += nextItem.quantity * nextItem.price
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}
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// TODO Improve pattern to account for different asset precisions
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val df = DecimalFormat("####.########")
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df.roundingMode = RoundingMode.CEILING
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df.decimalFormatSymbols = DecimalFormatSymbols(Locale.getDefault())
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tietAmount.setText(df.format(amount))
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}catch (e: Exception) {
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Log.d(TAG, "Invoice error: " + e.message)
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}
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}
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private fun validateAmount() {
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val txtAmount = tietAmount.text.toString()
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if (mBalancesDetailsAdapter?.isEmpty != false) return
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val balance = mBalancesDetailsAdapter?.getItem(spAsset.selectedItemPosition) ?: return
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val currentAmount = balance.amount.toDouble() / Math.pow(10.0, balance.precision.toDouble())
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val amount: Double = try {
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txtAmount.toDouble()
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} catch (e: Exception) {
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0.0
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}
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when {
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currentAmount < amount -> {
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tilAmount.error = getString(R.string.error__not_enough_funds)
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isAmountCorrect = false
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}
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amount == 0.0 -> {
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tilAmount.isErrorEnabled = false
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isAmountCorrect = false
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}
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else -> {
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tilAmount.isErrorEnabled = false
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isAmountCorrect = true
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}
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}
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enableDisableSendFAB()
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}
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private fun enableDisableSendFAB() {
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if (isToAccountCorrect && isAmountCorrect) {
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fabSendTransaction.enable(R.color.colorSend)
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vSend.setBackgroundResource(R.drawable.send_fab_background)
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} else {
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fabSendTransaction.disable(R.color.lightGray)
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vSend.setBackgroundResource(R.drawable.send_fab_background_disabled)
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}
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}
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/** Starts the Send Transfer operation procedure, creating a [TransferOperation] and sending a call to the
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* NetworkService to obtain the [DynamicGlobalProperties] object needed to successfully send a Transfer */
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private fun startSendTransferOperation() {
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// Create TransferOperation
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if (mNetworkService?.isConnected == true) {
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val balance = mBalancesDetailsAdapter!!.getItem(spAsset.selectedItemPosition)!!
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val amount = (tietAmount.text.toString().toDouble() * Math.pow(10.0, balance.precision.toDouble())).toLong()
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val transferAmount = AssetAmount(UnsignedLong.valueOf(amount), Asset(balance.id))
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val operationBuilder = TransferOperationBuilder()
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.setSource(mUserAccount)
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.setDestination(mSelectedUserAccount)
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.setTransferAmount(transferAmount)
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val privateKey = ECKey.fromPrivate(DumpedPrivateKey.fromBase58(null, wifKey).key.privKeyBytes)
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// Add memo if it is not empty
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val memoMsg = tietMemo.text.toString()
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if (memoMsg.isNotEmpty()) {
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val nonce = Math.abs(SecureRandomGenerator.getSecureRandom().nextLong()).toBigInteger()
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val encryptedMemo = Memo.encryptMessage(privateKey, destinationPublicKey!!, nonce, memoMsg)
|
|
val from = Address(ECKey.fromPublicOnly(privateKey.pubKey))
|
|
val to = Address(destinationPublicKey!!.key)
|
|
val memo = Memo(from, to, nonce, encryptedMemo)
|
|
operationBuilder.setMemo(memo)
|
|
}
|
|
|
|
// Object that will contain all operations to be sent at once
|
|
val operations = ArrayList<BaseOperation>()
|
|
// Transfer from the current user to the selected one
|
|
val transferOperation = operationBuilder.build()
|
|
operations.add(transferOperation)
|
|
|
|
// Transfer operation to be sent as a fee to Agorise
|
|
val feeOperation = getAgoriseFeeOperation(transferOperation)
|
|
if (feeOperation != null && (feeOperation.assetAmount?.amount?.toLong() ?: 0L) > 0L)
|
|
operations.add(feeOperation)
|
|
|
|
transaction = Transaction(privateKey, null, operations)
|
|
|
|
// Start the send transaction procedure which includes a series of calls
|
|
val id = mNetworkService?.sendMessage(GetDynamicGlobalProperties(),
|
|
GetDynamicGlobalProperties.REQUIRED_API)
|
|
if (id != null ) responseMap[id] = RESPONSE_GET_DYNAMIC_GLOBAL_PARAMETERS
|
|
} else
|
|
Log.d(TAG, "Network Service is not connected")
|
|
}
|
|
|
|
/**
|
|
* Obtains the correct [TransferOperation] object to send the fee to Agorise. A fee is only sent if the Asset is
|
|
* BTS or a SmartCoin.
|
|
*/
|
|
private fun getAgoriseFeeOperation(transferOperation: TransferOperation): TransferOperation? {
|
|
// Verify that the current Asset is either BTS or a SmartCoin
|
|
if (Constants.assetsWhichSendFeeToAgorise.contains(transferOperation.assetAmount?.asset?.objectId ?: "")) {
|
|
val fee = transferOperation.assetAmount?.multiplyBy(Constants.FEE_PERCENTAGE) ?: return null
|
|
|
|
return TransferOperationBuilder()
|
|
.setSource(mUserAccount)
|
|
.setDestination(Constants.AGORISE_ACCOUNT)
|
|
.setTransferAmount(fee)
|
|
.build()
|
|
} else
|
|
return null
|
|
}
|
|
|
|
override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
|
|
inflater.inflate(R.menu.menu_send_transaction, menu)
|
|
}
|
|
|
|
override fun onOptionsItemSelected(item: MenuItem?): Boolean {
|
|
if (item?.itemId == R.id.menu_info) {
|
|
MaterialDialog(context!!).show {
|
|
customView(R.layout.dialog_send_transaction_info, scrollable = true)
|
|
positiveButton(android.R.string.ok) { dismiss() }
|
|
}
|
|
return true
|
|
}
|
|
return super.onOptionsItemSelected(item)
|
|
}
|
|
|
|
override fun onResume() {
|
|
super.onResume()
|
|
|
|
if (isCameraPreviewVisible)
|
|
startCameraPreview()
|
|
}
|
|
|
|
override fun onPause() {
|
|
super.onPause()
|
|
|
|
if (!isCameraPreviewVisible)
|
|
stopCameraPreview()
|
|
}
|
|
}
|