/*
 * 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.content.Intent.ACTION_VIEW
import android.net.Uri
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.View.GONE
import android.view.View.VISIBLE
import android.view.ViewGroup
import androidx.fragment.app.activityViewModels
import androidx.navigation.fragment.findNavController
import net.taler.common.startActivitySafe
import net.taler.common.toAbsoluteTime
import net.taler.wallet.MainViewModel
import net.taler.wallet.R
import net.taler.wallet.cleanExchange
import net.taler.wallet.databinding.FragmentTransactionWithdrawalBinding
import net.taler.wallet.transactions.WithdrawalDetails.ManualTransfer
import net.taler.wallet.transactions.WithdrawalDetails.TalerBankIntegrationApi
import net.taler.wallet.withdraw.createManualTransferRequired

class TransactionWithdrawalFragment : TransactionDetailFragment() {

    private val model: MainViewModel by activityViewModels()
    private val withdrawManager by lazy { model.withdrawManager }
    private lateinit var ui: FragmentTransactionWithdrawalBinding

    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?,
    ): View {
        ui = FragmentTransactionWithdrawalBinding.inflate(inflater, container, false)
        return ui.root
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        val t = transaction as TransactionWithdrawal
        ui.timeView.text = t.timestamp.ms.toAbsoluteTime(requireContext())

        ui.effectiveAmountLabel.text = getString(R.string.withdraw_total)
        ui.effectiveAmountView.text = t.amountEffective.toString()
        setupConfirmWithdrawalButton(t)
        setupActionButton(t)
        ui.chosenAmountLabel.text = getString(R.string.amount_chosen)
        ui.chosenAmountView.text =
            getString(R.string.amount_positive, t.amountRaw.toString())
        val fee = t.amountRaw - t.amountEffective
        ui.feeView.text = getString(R.string.amount_negative, fee.toString())
        ui.exchangeView.text = cleanExchange(t.exchangeBaseUrl)
        if (t.pending) {
            ui.deleteButton.setIconResource(R.drawable.ic_cancel)
            ui.deleteButton.setText(R.string.cancel)
        }
        ui.deleteButton.setOnClickListener {
            onDeleteButtonClicked(t)
        }
    }

    override val deleteDialogTitle: Int
        get() = if (transaction?.pending == true) R.string.cancel else super.deleteDialogTitle
    override val deleteDialogMessage: Int
        get() = if (transaction?.pending == true) R.string.transactions_cancel_dialog_message
        else super.deleteDialogMessage
    override val deleteDialogButton: Int
        get() = if (transaction?.pending == true) R.string.ok else super.deleteDialogButton

    private fun setupConfirmWithdrawalButton(t: TransactionWithdrawal) {
        if (t.pending && !t.confirmed) {
            if (t.withdrawalDetails is TalerBankIntegrationApi &&
                t.withdrawalDetails.bankConfirmationUrl != null
            ) {
                val i = Intent(ACTION_VIEW).apply {
                    data = Uri.parse(t.withdrawalDetails.bankConfirmationUrl)
                }
                ui.confirmWithdrawalButton.setOnClickListener { startActivitySafe(i) }
            } else if (t.withdrawalDetails is ManualTransfer) {
                ui.confirmWithdrawalButton.setText(R.string.withdraw_manual_ready_details_intro)
                ui.confirmWithdrawalButton.setOnClickListener {
                    val status = createManualTransferRequired(
                        amount = t.amountRaw,
                        exchangeBaseUrl = t.exchangeBaseUrl,
                        // TODO what if there's more than one or no URI?
                        uriStr = t.withdrawalDetails.exchangePaytoUris[0],
                        transactionId = t.transactionId,
                    )
                    withdrawManager.viewManualWithdrawal(status)
                    findNavController().navigate(
                        R.id.action_nav_transactions_detail_withdrawal_to_nav_exchange_manual_withdrawal_success)
                }
            } else ui.confirmWithdrawalButton.visibility = GONE
        } else ui.confirmWithdrawalButton.visibility = GONE
    }

    private fun setupActionButton(t: TransactionWithdrawal) {
        ui.actionButton.visibility = t.error?.let { error ->
            when (error.code) {
                7025 -> { // KYC
                    ui.actionButton.setText(R.string.transaction_action_kyc)
                    val i = Intent(ACTION_VIEW).apply {
                        data = Uri.parse(error.kycUrl)
                    }
                    ui.actionButton.setOnClickListener { startActivitySafe(i) }
                    VISIBLE
                }
                else -> GONE
            }
        } ?: GONE
    }
}