summaryrefslogtreecommitdiff
path: root/wallet/src/main/java/net/taler/wallet/withdraw/WithdrawManager.kt
blob: e3af757d406db2f0dbb6b753942c72c634a5b10e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
/*
 * 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.withdraw

import android.util.Log
import androidx.lifecycle.MutableLiveData
import net.taler.wallet.Amount
import net.taler.wallet.TAG
import net.taler.wallet.backend.WalletBackendApi
import org.json.JSONObject

sealed class WithdrawStatus {
    data class Loading(val talerWithdrawUri: String) : WithdrawStatus()
    data class TermsOfServiceReviewRequired(
        val talerWithdrawUri: String,
        val exchangeBaseUrl: String,
        val tosText: String,
        val tosEtag: String,
        val amount: Amount,
        val suggestedExchange: String
    ) : WithdrawStatus()

    data class ReceivedDetails(
        val talerWithdrawUri: String,
        val amount: Amount,
        val suggestedExchange: String
    ) : WithdrawStatus()

    data class Withdrawing(val talerWithdrawUri: String) : WithdrawStatus()

    object Success : WithdrawStatus()
    data class Error(val message: String?) : WithdrawStatus()
}

class WithdrawManager(private val walletBackendApi: WalletBackendApi) {

    val withdrawStatus = MutableLiveData<WithdrawStatus>()
    val testWithdrawalInProgress = MutableLiveData(false)

    private var currentWithdrawRequestId = 0

    fun withdrawTestkudos() {
        testWithdrawalInProgress.value = true

        walletBackendApi.sendRequest("withdrawTestkudos", null) { _, _ ->
            testWithdrawalInProgress.postValue(false)
        }
    }

    fun getWithdrawalInfo(talerWithdrawUri: String) {
        val args = JSONObject()
        args.put("talerWithdrawUri", talerWithdrawUri)

        withdrawStatus.value = WithdrawStatus.Loading(talerWithdrawUri)

        this.currentWithdrawRequestId++
        val myWithdrawRequestId = this.currentWithdrawRequestId

        walletBackendApi.sendRequest("getWithdrawDetailsForUri", args) { isError, result ->
            if (isError) {
                Log.e(TAG, "Error getWithdrawDetailsForUri ${result.toString(4)}")
                val message = if (result.has("message")) result.getString("message") else null
                withdrawStatus.postValue(WithdrawStatus.Error(message))
                return@sendRequest
            }
            if (myWithdrawRequestId != this.currentWithdrawRequestId) {
                val mismatch = "$myWithdrawRequestId != ${this.currentWithdrawRequestId}"
                Log.w(TAG, "Got withdraw result for different request id $mismatch")
                return@sendRequest
            }
            Log.v(TAG, "got getWithdrawDetailsForUri result")
            val status = withdrawStatus.value
            if (status !is WithdrawStatus.Loading) {
                Log.v(TAG, "ignoring withdrawal info result, not loading.")
                return@sendRequest
            }
            val wi = result.getJSONObject("bankWithdrawDetails")
            val suggestedExchange = wi.getString("suggestedExchange")
            // We just use the suggested exchange, in the future there will be
            // a selection dialog.
            getWithdrawalInfoWithExchange(talerWithdrawUri, suggestedExchange)
        }
    }

    private fun getWithdrawalInfoWithExchange(talerWithdrawUri: String, selectedExchange: String) {
        val args = JSONObject()
        args.put("talerWithdrawUri", talerWithdrawUri)
        args.put("selectedExchange", selectedExchange)

        this.currentWithdrawRequestId++
        val myWithdrawRequestId = this.currentWithdrawRequestId

        walletBackendApi.sendRequest("getWithdrawDetailsForUri", args) { isError, result ->
            if (isError) {
                Log.e(TAG, "Error getWithdrawDetailsForUri ${result.toString(4)}")
                val message = if (result.has("message")) result.getString("message") else null
                withdrawStatus.postValue(WithdrawStatus.Error(message))
                return@sendRequest
            }
            if (myWithdrawRequestId != this.currentWithdrawRequestId) {
                val mismatch = "$myWithdrawRequestId != ${this.currentWithdrawRequestId}"
                Log.w(TAG, "Got withdraw result for different request id $mismatch")
                return@sendRequest
            }
            Log.v(TAG, "got getWithdrawDetailsForUri result (with exchange details)")
            val status = withdrawStatus.value
            if (status !is WithdrawStatus.Loading) {
                Log.v(TAG, "ignoring withdrawal info result, not loading.")
                return@sendRequest
            }
            val wi = result.getJSONObject("bankWithdrawDetails")
            val suggestedExchange = wi.getString("suggestedExchange")
            val amount = Amount.fromJson(wi.getJSONObject("amount"))

            val ei = result.getJSONObject("exchangeWithdrawDetails")
            val termsOfServiceAccepted = ei.getBoolean("termsOfServiceAccepted")

            if (!termsOfServiceAccepted) {
                val exchange = ei.getJSONObject("exchangeInfo")
                val tosText = exchange.getString("termsOfServiceText")
                val tosEtag = exchange.optString("termsOfServiceLastEtag", "undefined")
                withdrawStatus.postValue(
                    WithdrawStatus.TermsOfServiceReviewRequired(
                        status.talerWithdrawUri,
                        selectedExchange,
                        tosText,
                        tosEtag,
                        amount,
                        suggestedExchange
                    )
                )
            } else {
                withdrawStatus.postValue(
                    WithdrawStatus.ReceivedDetails(
                        status.talerWithdrawUri,
                        amount,
                        suggestedExchange
                    )
                )
            }
        }
    }

    fun acceptWithdrawal(talerWithdrawUri: String, selectedExchange: String) {
        val args = JSONObject()
        args.put("talerWithdrawUri", talerWithdrawUri)
        args.put("selectedExchange", selectedExchange)

        withdrawStatus.value = WithdrawStatus.Withdrawing(talerWithdrawUri)

        walletBackendApi.sendRequest("acceptWithdrawal", args) { isError, _ ->
            if (isError) {
                Log.v(TAG, "got acceptWithdrawal error result")
                return@sendRequest
            }
            Log.v(TAG, "got acceptWithdrawal result")
            val status = withdrawStatus.value
            if (status !is WithdrawStatus.Withdrawing) {
                Log.v(TAG, "ignoring acceptWithdrawal result, invalid state")
            }
            withdrawStatus.postValue(WithdrawStatus.Success)
        }
    }

    /**
     * Accept the currently displayed terms of service.
     */
    fun acceptCurrentTermsOfService() {
        when (val s = withdrawStatus.value) {
            is WithdrawStatus.TermsOfServiceReviewRequired -> {
                val args = JSONObject()
                args.put("exchangeBaseUrl", s.exchangeBaseUrl)
                args.put("etag", s.tosEtag)
                walletBackendApi.sendRequest("acceptExchangeTermsOfService", args) { isError, _ ->
                    if (isError) {
                        return@sendRequest
                    }
                    withdrawStatus.postValue(
                        WithdrawStatus.ReceivedDetails(
                            s.talerWithdrawUri,
                            s.amount,
                            s.suggestedExchange
                        )
                    )
                }
            }
        }
    }

    fun cancelCurrentWithdraw() {
        currentWithdrawRequestId++
        withdrawStatus.value = null
    }

}