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path: root/wallet/src/main/java/net/taler/wallet/transactions/TransactionDetailFragment.kt
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/*
 * This file is part of GNU Taler
 * (C) 2020 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.transactions

import android.content.Intent
import android.net.Uri
import android.os.Bundle
import android.view.LayoutInflater
import android.view.Menu
import android.view.MenuInflater
import android.view.MenuItem
import android.view.View
import android.view.View.GONE
import android.view.ViewGroup
import android.widget.Toast
import android.widget.Toast.LENGTH_LONG
import androidx.core.content.ContextCompat.getColor
import androidx.fragment.app.Fragment
import androidx.fragment.app.activityViewModels
import kotlinx.android.synthetic.main.fragment_transaction_payment.*
import kotlinx.android.synthetic.main.fragment_transaction_withdrawal.*
import kotlinx.android.synthetic.main.fragment_transaction_withdrawal.feeView
import kotlinx.android.synthetic.main.fragment_transaction_withdrawal.timeView
import net.taler.common.isSafe
import net.taler.common.toAbsoluteTime
import net.taler.lib.common.Amount
import net.taler.wallet.MainViewModel
import net.taler.wallet.R
import net.taler.wallet.cleanExchange
import net.taler.wallet.transactions.WithdrawalDetails.TalerBankIntegrationApi

class TransactionDetailFragment : Fragment() {

    private val model: MainViewModel by activityViewModels()
    private val transactionManager by lazy { model.transactionManager }
    private val transaction by lazy { requireNotNull(transactionManager.selectedTransaction) }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setHasOptionsMenu(model.devMode.value == true)
    }

    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        return inflater.inflate(transaction.detailPageLayout, container, false)
    }

    override fun onActivityCreated(savedInstanceState: Bundle?) {
        super.onActivityCreated(savedInstanceState)
        requireActivity().apply {
            title = getString(transaction.generalTitleRes)
        }
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        timeView.text = transaction.timestamp.ms.toAbsoluteTime(requireContext())
        when (val e = transaction) {
            is TransactionWithdrawal -> bind(e)
            is TransactionPayment -> bind(e)
            is TransactionRefund -> bind(e)
            is TransactionRefresh -> bind(e)
            else -> Toast.makeText(
                requireContext(),
                "Transaction ${e.javaClass.simpleName} not implemented.",
                LENGTH_LONG
            ).show()
        }
    }

    override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
        inflater.inflate(R.menu.transactions_detail, menu)
    }

    override fun onOptionsItemSelected(item: MenuItem): Boolean {
        return when (item.itemId) {
            else -> super.onOptionsItemSelected(item)
        }
    }

    private fun bind(t: TransactionWithdrawal) {
        effectiveAmountLabel.text = getString(R.string.withdraw_total)
        effectiveAmountView.text = t.amountEffective.toString()
        if (t.pending && t.withdrawalDetails is TalerBankIntegrationApi &&
            !t.confirmed && t.withdrawalDetails.bankConfirmationUrl != null
        ) {
            val i = Intent().apply {
                data = Uri.parse(t.withdrawalDetails.bankConfirmationUrl)
            }
            if (i.isSafe(requireContext())) {
                confirmWithdrawalButton.setOnClickListener { startActivity(i) }
            }
        } else confirmWithdrawalButton.visibility = GONE
        chosenAmountLabel.text = getString(R.string.amount_chosen)
        chosenAmountView.text =
            getString(R.string.amount_positive, t.amountRaw.toString())
        val fee = t.amountRaw - t.amountEffective
        feeView.text = getString(R.string.amount_negative, fee.toString())
        exchangeView.text = cleanExchange(t.exchangeBaseUrl)
    }

    private fun bind(t: TransactionPayment) {
        amountPaidWithFeesView.text = t.amountEffective.toString()
        val fee = t.amountEffective - t.amountRaw
        bindOrderAndFee(t.info, t.amountRaw, fee)
    }

    private fun bind(t: TransactionRefund) {
        amountPaidWithFeesLabel.text = getString(R.string.transaction_refund)
        amountPaidWithFeesView.setTextColor(getColor(requireContext(), R.color.green))
        amountPaidWithFeesView.text =
            getString(R.string.amount_positive, t.amountEffective.toString())
        val fee = t.amountRaw - t.amountEffective
        bindOrderAndFee(t.info, t.amountRaw, fee)
    }

    private fun bind(t: TransactionRefresh) {
        effectiveAmountLabel.visibility = GONE
        effectiveAmountView.visibility = GONE
        confirmWithdrawalButton.visibility = GONE
        chosenAmountLabel.visibility = GONE
        chosenAmountView.visibility = GONE
        val fee = t.amountEffective
        feeView.text = getString(R.string.amount_negative, fee.toString())
        exchangeView.text = cleanExchange(t.exchangeBaseUrl)
    }

    private fun bindOrderAndFee(info: TransactionInfo, raw: Amount, fee: Amount) {
        orderAmountView.text = raw.toString()
        feeView.text = getString(R.string.amount_negative, fee.toString())
        orderSummaryView.text = info.summary
        if (info.fulfillmentUrl?.startsWith("http") == true) {
            val i = Intent().apply {
                data = Uri.parse(info.fulfillmentUrl)
            }
            if (i.isSafe(requireContext())) {
                orderSummaryView.setOnClickListener { startActivity(i) }
            }
        }
        orderIdView.text = getString(R.string.transaction_order_id, info.orderId)
    }

}