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BankingClient
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Added example for reading TAN from command line

This commit is contained in:
dankito 2024-09-17 17:23:30 +02:00
parent 2853087836
commit 62fe93e88e
2 changed files with 39 additions and 6 deletions
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29
README.md
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@ -82,7 +82,10 @@ class ShowUsage {
This fetches the booked account transactions of the last 90 days. In most cases no TAN is required for this. This fetches the booked account transactions of the last 90 days. In most cases no TAN is required for this.
You can also specify options e.g. which transactions should be retrieved:
#### GetAccountData parameter
You can also specify options e.g. which transactions you would like to retrieve:
```kotlin ```kotlin
val options = GetAccountDataOptions( val options = GetAccountDataOptions(
@ -95,15 +98,35 @@ val options = GetAccountDataOptions(
val response = client.getAccountData(options) val response = client.getAccountData(options)
``` ```
Retrieving transactions older than 90 days requires a TAN, so add TAN handling in Client Callback: ### TAN handling
Retrieving transactions older than 90 days or sometimes even log in requires a TAN, so add TAN handling in Client Callback:
```kotlin ```kotlin
val client = FinTs4kBankingClientForUser(bankCode, loginName, password, SimpleBankingClientCallback { tanChallenge, callback -> val client = FinTs4kBankingClientForUser(bankCode, loginName, password, SimpleBankingClientCallback { tanChallenge, callback ->
val tan: String? = null // if a TAN is required, add a UI or ... val tan: String? = null // if a TAN is required, read TAN from command line, add a UI, ...
callback.invoke(EnterTanResult(tan)) // ... set a break point here, get TAN e.g. from your TAN app, set tan variable in debugger view and resume debugger callback.invoke(EnterTanResult(tan)) // ... set a break point here, get TAN e.g. from your TAN app, set tan variable in debugger view and resume debugger
}) })
``` ```
E.g. TAN handling on the command line:
```kotlin
println("Enter password for $bankCode:")
val password = readln() // as an alternative for hard coding password; of course can also be done for bankCode and login name
val client = FinTs4kBankingClientForUser(bankCode, loginName, password, SimpleBankingClientCallback { tanChallenge, callback ->
println("A TAN is required for ${tanChallenge.forAction}. Selected TAN method is '${tanChallenge.selectedTanMethod.displayName}'. Messsage of your credit institute:")
println(tanChallenge.messageToShowToUser)
println("Get TAN from your TAN app etc., enter it and press Enter (or press Enter without an input to abort process):")
val tan: String? = readlnOrNull().takeUnless { it.isNullOrBlank() } // map empty input to null to abort process
callback.invoke(EnterTanResult(tan))
})
```
### Error handling
Add some error handling by checking `response.error`: Add some error handling by checking `response.error`:
```kotlin ```kotlin

16
SampleApp/src/main/kotlin/net/codinux/banking/client/fints4k/example/ShowUsage.kt
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@ -42,9 +42,16 @@ class ShowUsage {
} }
fun getAccountDataFullExample() { fun getAccountDataFullExample() {
println("Enter password for $bankCode:")
val password = readln() // as an alternative for hard coding password; of course can also be done for bankCode and login name
val client = FinTs4kBankingClientForUser(bankCode, loginName, password, SimpleBankingClientCallback { tanChallenge, callback -> val client = FinTs4kBankingClientForUser(bankCode, loginName, password, SimpleBankingClientCallback { tanChallenge, callback ->
val tan: String? = null // if a TAN is required, add a UI or ... println("A TAN is required for ${tanChallenge.forAction}. Selected TAN method is '${tanChallenge.selectedTanMethod.displayName}'. Messsage of your credit institute:")
callback.invoke(EnterTanResult(tan)) // ... set a break point here, get TAN e.g. from your TAN app, set tan variable in debugger view and resume debugger println(tanChallenge.messageToShowToUser)
println("Get TAN from your TAN app etc., enter it and press Enter (or press Enter without an input to abort process):")
val tan: String? = readlnOrNull().takeUnless { it.isNullOrBlank() } // map empty input to null to abort process
callback.invoke(EnterTanResult(tan))
}) })
val options = GetAccountDataOptions( val options = GetAccountDataOptions(
@ -65,7 +72,10 @@ class ShowUsage {
fun updateAccountTransactions() { fun updateAccountTransactions() {
val client = FinTs4kBankingClientForUser(bankCode, loginName, password, SimpleBankingClientCallback()) val client = FinTs4kBankingClientForUser(bankCode, loginName, password, SimpleBankingClientCallback { tanChallenge, callback ->
val tan: String? = readlnOrNull() // if a TAN is required, read TAN from command line, add a UI, ...
callback.invoke(EnterTanResult(tan)) // ... set a break point here, get TAN e.g. from your TAN app, set tan variable in debugger view and resume debugger
})
// simulate account transactions we retrieved last time // simulate account transactions we retrieved last time
val today = Clock.System.now().toLocalDateTime(TimeZone.currentSystemDefault()).date val today = Clock.System.now().toLocalDateTime(TimeZone.currentSystemDefault()).date