diff options
Diffstat (limited to 'wallet/src/main/java/net/taler/wallet/HandleUriFragment.kt')
| -rw-r--r-- | wallet/src/main/java/net/taler/wallet/HandleUriFragment.kt | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/wallet/src/main/java/net/taler/wallet/HandleUriFragment.kt b/wallet/src/main/java/net/taler/wallet/HandleUriFragment.kt new file mode 100644 index 0000000..6b8db78 --- /dev/null +++ b/wallet/src/main/java/net/taler/wallet/HandleUriFragment.kt @@ -0,0 +1,272 @@ +/* + * This file is part of GNU Taler + * (C) 2024 Taler Systems S.A. + * + * GNU Taler is free software; you can redistribute it and/or modify it under the + * terms of the GNU General Public License as published by the Free Software + * Foundation; either version 3, or (at your option) any later version. + * + * GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY + * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR + * A PARTICULAR PURPOSE. See the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along with + * GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/> + */ + +package net.taler.wallet + +import android.net.Uri +import android.os.Bundle +import android.util.Log +import android.view.LayoutInflater +import android.view.View +import android.view.ViewGroup +import android.widget.Toast.LENGTH_LONG +import androidx.compose.ui.platform.ComposeView +import androidx.core.os.bundleOf +import androidx.fragment.app.Fragment +import androidx.fragment.app.activityViewModels +import androidx.lifecycle.MutableLiveData +import androidx.lifecycle.Observer +import androidx.lifecycle.lifecycleScope +import androidx.lifecycle.viewModelScope +import androidx.navigation.fragment.findNavController +import com.google.android.material.snackbar.Snackbar +import kotlinx.coroutines.Dispatchers +import kotlinx.coroutines.launch +import kotlinx.coroutines.withContext +import net.taler.common.isOnline +import net.taler.common.showError +import net.taler.wallet.compose.LoadingScreen +import net.taler.wallet.compose.TalerSurface +import net.taler.wallet.refund.RefundStatus +import java.io.IOException +import java.net.HttpURLConnection +import java.net.URL +import java.util.Locale + +class HandleUriFragment: Fragment() { + private val model: MainViewModel by activityViewModels() + + lateinit var uri: String + lateinit var from: String + + override fun onCreateView( + inflater: LayoutInflater, + container: ViewGroup?, + savedInstanceState: Bundle? + ): View { + uri = arguments?.getString("uri") ?: error("no uri passed") + from = arguments?.getString("from") ?: error("no from passed") + + return ComposeView(requireContext()).apply { + setContent { + TalerSurface { + LoadingScreen() + } + } + } + } + + override fun onViewCreated(view: View, savedInstanceState: Bundle?) { + super.onViewCreated(view, savedInstanceState) + + val uri = Uri.parse(uri) + if (uri.fragment != null && !requireContext().isOnline()) { + connectToWifi(requireContext(), uri.fragment!!) + } + + // TODO: fix this bad async programming, make it only async when needed. + getTalerAction(uri, 3, MutableLiveData<String>()).observe(viewLifecycleOwner) { u -> + Log.v(TAG, "found action $u") + + if (u.startsWith("payto://", ignoreCase = true)) { + Log.v(TAG, "navigating with paytoUri!") + val bundle = bundleOf("uri" to u) + findNavController().navigate(R.id.action_handleUri_to_nav_payto_uri, bundle) + return@observe + } + + val normalizedURL = u.lowercase(Locale.ROOT) + var ext = false + val action = normalizedURL.substring( + if (normalizedURL.startsWith("taler://", ignoreCase = true)) { + "taler://".length + } else if (normalizedURL.startsWith("ext+taler://", ignoreCase = true)) { + ext = true + "ext+taler://".length + } else if (normalizedURL.startsWith("taler+http://", ignoreCase = true) && + model.devMode.value == true + ) { + "taler+http://".length + } else { + normalizedURL.length + } + ) + + // Remove ext+ scheme prefix if present + val u2 = if (ext) { + "taler://" + u.substring("ext+taler://".length) + } else u + + when { + action.startsWith("pay/", ignoreCase = true) -> { + Log.v(TAG, "navigating!") + findNavController().navigate(R.id.action_handleUri_to_promptPayment) + model.paymentManager.preparePay(u2) + } + action.startsWith("withdraw/", ignoreCase = true) -> { + Log.v(TAG, "navigating!") + // there's more than one entry point, so use global action + findNavController().navigate(R.id.action_handleUri_to_promptWithdraw) + model.withdrawManager.getWithdrawalDetails(u2) + } + + action.startsWith("withdraw-exchange/", ignoreCase = true) -> { + prepareManualWithdrawal(u2) + } + + action.startsWith("refund/", ignoreCase = true) -> { + model.showProgressBar.value = true + model.refundManager.refund(u2).observe(viewLifecycleOwner, Observer(::onRefundResponse)) + } + action.startsWith("pay-pull/", ignoreCase = true) -> { + findNavController().navigate(R.id.action_handleUri_to_promptPullPayment) + model.peerManager.preparePeerPullDebit(u2) + } + action.startsWith("pay-push/", ignoreCase = true) -> { + findNavController().navigate(R.id.action_handleUri_to_promptPushPayment) + model.peerManager.preparePeerPushCredit(u2) + } + action.startsWith("pay-template/", ignoreCase = true) -> { + val bundle = bundleOf("uri" to u2) + findNavController().navigate(R.id.action_handleUri_to_promptPayTemplate, bundle) + } + action.startsWith("dev-experiment/", ignoreCase = true) -> { + model.applyDevExperiment(u2) { error -> + showError(error) + } + findNavController().navigate(R.id.nav_main) + } + else -> { + showError(R.string.error_unsupported_uri, "From: $from\nURI: $u2") + findNavController().popBackStack() + } + } + } + } + + private fun getTalerAction( + uri: Uri, + maxRedirects: Int, + actionFound: MutableLiveData<String>, + ): MutableLiveData<String> { + val scheme = uri.scheme ?: return actionFound + + if (scheme == "http" || scheme == "https") { + model.viewModelScope.launch(Dispatchers.IO) { + val conn = URL(uri.toString()).openConnection() as HttpURLConnection + Log.v(TAG, "prepare query: $uri") + conn.setRequestProperty("Accept", "text/html") + conn.connectTimeout = 5000 + conn.requestMethod = "HEAD" + try { + conn.connect() + } catch (e: IOException) { + Log.e(TAG, "Error connecting to $uri ", e) + showError(R.string.error_broken_uri, "$uri") + return@launch + } + val status = conn.responseCode + + if (status == HttpURLConnection.HTTP_OK || status == HttpURLConnection.HTTP_PAYMENT_REQUIRED) { + val talerHeader = conn.headerFields["Taler"] + if (talerHeader != null && talerHeader[0] != null) { + Log.v(TAG, "taler header: ${talerHeader[0]}") + val talerHeaderUri = Uri.parse(talerHeader[0]) + getTalerAction(talerHeaderUri, 0, actionFound) + } + } else if (status == HttpURLConnection.HTTP_MOVED_TEMP + || status == HttpURLConnection.HTTP_MOVED_PERM + || status == HttpURLConnection.HTTP_SEE_OTHER + ) { + val location = conn.headerFields["Location"] + if (location != null && location[0] != null) { + Log.v(TAG, "location redirect: ${location[0]}") + val locUri = Uri.parse(location[0]) + getTalerAction(locUri, maxRedirects - 1, actionFound) + } + } else { + showError(R.string.error_broken_uri, "$uri") + findNavController().popBackStack() + } + } + } else { + actionFound.postValue(uri.toString()) + } + + return actionFound + } + + private fun prepareManualWithdrawal(uri: String) { + model.showProgressBar.value = true + lifecycleScope.launch(Dispatchers.IO) { + val response = model.withdrawManager.prepareManualWithdrawal(uri) + if (response == null) withContext(Dispatchers.Main) { + model.showProgressBar.value = false + findNavController().navigate(R.id.errorFragment) + } else { + val exchange = + model.exchangeManager.findExchangeByUrl(response.exchangeBaseUrl) + if (exchange == null) withContext(Dispatchers.Main) { + model.showProgressBar.value = false + showError(R.string.exchange_add_error) + findNavController().navigateUp() + } else { + model.exchangeManager.withdrawalExchange = exchange + withContext(Dispatchers.Main) { + model.showProgressBar.value = false + val args = Bundle().apply { + if (response.amount != null) { + putString("amount", response.amount.toJSONString()) + } + } + + findNavController().navigate(R.id.action_handleUri_to_manualWithdrawal, args) + } + } + } + } + } + + private fun onRefundResponse(status: RefundStatus) { + model.showProgressBar.value = false + when (status) { + is RefundStatus.Error -> { + if (model.devMode.value == true) { + showError(status.error) + } else { + showError(R.string.refund_error, status.error.userFacingMsg) + } + + findNavController().navigateUp() + } + is RefundStatus.Success -> { + lifecycleScope.launch { + val transactionId = status.response.transactionId + val transaction = model.transactionManager.getTransactionById(transactionId) + if (transaction != null) { + // TODO: currency what? scopes are the cool thing now + // val currency = transaction.amountRaw.currency + // model.showTransactions(currency) + Snackbar.make(requireView(), getString(R.string.refund_success), LENGTH_LONG).show() + } + + findNavController().navigateUp() + } + } + + } + } +}
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