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/*
* This file is part of LibEuFin.
* Copyright (C) 2023 Stanisci and Dold.
* LibEuFin is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation; either version 3, or
* (at your option) any later version.
* LibEuFin 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 Affero General
* Public License for more details.
* You should have received a copy of the GNU Affero General Public
* License along with LibEuFin; see the file COPYING. If not, see
* <http://www.gnu.org/licenses/>
*/
package tech.libeufin.nexus
import com.github.ajalt.clikt.core.CliktCommand
import com.github.ajalt.clikt.parameters.groups.*
import com.github.ajalt.clikt.parameters.options.*
import io.ktor.client.*
import kotlinx.coroutines.*
import tech.libeufin.common.*
import tech.libeufin.nexus.ebics.*
import tech.libeufin.nexus.db.*
import java.time.*
import java.util.*
import kotlin.time.toKotlinDuration
/**
* Groups useful parameters to submit pain.001 via EBICS.
*/
data class SubmissionContext(
/**
* HTTP connection handle.
*/
val httpClient: HttpClient,
/**
* Configuration handle.
*/
val cfg: EbicsSetupConfig,
/**
* Subscriber EBICS private keys.
*/
val clientPrivateKeysFile: ClientPrivateKeysFile,
/**
* Bank EBICS public keys.
*/
val bankPublicKeysFile: BankPublicKeysFile,
val fileLogger: FileLogger
)
/**
* Takes the initiated payment data as it was returned from the
* database, sanity-checks it, gets the pain.001 from the helper
* function and finally submits it via EBICS to the bank.
*
* @param ctx [SubmissionContext]
* @return true on success, false otherwise.
*/
private suspend fun submitInitiatedPayment(
ctx: SubmissionContext,
payment: InitiatedPayment
): String {
val creditAccount = try {
val payto = Payto.parse(payment.creditPaytoUri).expectIban()
IbanAccountMetadata(
iban = payto.iban.value,
bic = payto.bic,
name = payto.receiverName!!
)
} catch (e: Exception) {
throw e // TODO handle payto error
}
val xml = createPain001(
requestUid = payment.requestUid,
initiationTimestamp = payment.initiationTime,
amount = payment.amount,
creditAccount = creditAccount,
debitAccount = ctx.cfg.myIbanAccount,
wireTransferSubject = payment.wireTransferSubject
)
ctx.fileLogger.logSubmit(xml)
return doEbicsUpload(
ctx.httpClient,
ctx.cfg,
ctx.clientPrivateKeysFile,
ctx.bankPublicKeysFile,
uploadPaymentService(),
xml
)
}
/**
* Searches the database for payments to submit and calls
* the submitter helper.
*
* @param cfg configuration handle.
* @param db database connection.
* @param httpClient HTTP connection handle.
* @param clientKeys subscriber private keys.
* @param bankKeys bank public keys.
*/
private suspend fun submitBatch(
ctx: SubmissionContext,
db: Database,
) {
db.initiated.submittable(ctx.cfg.currency).forEach {
logger.debug("Submitting payment '${it.requestUid}'")
runCatching { submitInitiatedPayment(ctx, it) }.fold(
onSuccess = { orderId ->
db.initiated.submissionSuccess(it.id, Instant.now(), orderId)
logger.info("Payment '${it.requestUid}' submitted")
},
onFailure = { e ->
db.initiated.submissionFailure(it.id, Instant.now(), e.message)
logger.error("Payment '${it.requestUid}' submission failure: ${e.fmt()}")
throw e
}
)
}
}
class EbicsSubmit : CliktCommand("Submits any initiated payment found in the database") {
private val common by CommonOption()
private val transient by option(
"--transient",
help = "This flag submits what is found in the database and returns, " +
"ignoring the 'frequency' configuration value"
).flag(default = false)
private val ebicsLog by option(
"--debug-ebics",
help = "Log EBICS content at SAVEDIR",
)
/**
* Submits any initiated payment that was not submitted
* so far and -- according to the configuration -- returns
* or long-polls (currently not implemented) for new payments.
* FIXME: reduce code duplication with the fetch subcommand.
*/
override fun run() = cliCmd(logger, common.log) {
val cfg: EbicsSetupConfig = extractEbicsConfig(common.config)
val dbCfg = cfg.config.dbConfig()
val (clientKeys, bankKeys) = expectFullKeys(cfg)
val ctx = SubmissionContext(
cfg = cfg,
bankPublicKeysFile = bankKeys,
clientPrivateKeysFile = clientKeys,
httpClient = HttpClient(),
fileLogger = FileLogger(ebicsLog)
)
Database(dbCfg.dbConnStr).use { db ->
val frequency: Duration = if (transient) {
logger.info("Transient mode: submitting what found and returning.")
Duration.ZERO
} else {
var frequency = cfg.config.requireDuration("nexus-submit", "frequency")
val raw = cfg.config.requireString("nexus-submit", "frequency")
logger.debug("Running with a frequency of $raw")
if (frequency == Duration.ZERO) {
logger.warn("Long-polling not implemented, running therefore in transient mode")
}
frequency
}
do {
try {
submitBatch(ctx, db)
} catch (e: Exception) {
throw Exception("Failed to submit payments")
}
// TODO take submitBatch taken time in the delay
delay(frequency.toKotlinDuration())
} while (frequency != Duration.ZERO)
}
}
}
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