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Updated on 2026-08-14

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Tangem 2024-04-23 15:56:47 +01:00
parent 385cc79a32
commit a3f2c421bf
69 changed files with 749 additions and 542 deletions
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55
app/src/main/java/com/tangem/tap/features/demo/DemoTransactionSender.kt
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package com.tangem.tap.features.demo
import com.tangem.blockchain.common.*
import com.tangem.blockchain.common.transaction.Fee
import com.tangem.blockchain.common.transaction.TransactionFee
import com.tangem.blockchain.extensions.Result
import com.tangem.blockchain.extensions.SimpleResult
import com.tangem.common.CompletionResult
import kotlin.random.Random
class DemoTransactionSender(private val walletManager: WalletManager) : TransactionSender {
override suspend fun getFee(amount: Amount, destination: String): Result<TransactionFee> {
val blockchain = walletManager.wallet.blockchain
return Result.Success(
TransactionFee.Choosable(
minimum = Fee.Common(Amount(minimumFee, blockchain)),
normal = Fee.Common(Amount(normalFee, blockchain)),
priority = Fee.Common(Amount(priorityFee, blockchain)),
),
)
}
override suspend fun estimateFee(amount: Amount, destination: String): Result<TransactionFee> {
return getFee(amount, walletManager.wallet.address)
}
override suspend fun send(transactionData: TransactionData, signer: TransactionSigner): SimpleResult {
val signerResponse = signer.sign(
hash = getDataToSign(),
publicKey = walletManager.wallet.publicKey,
)
return when (signerResponse) {
is CompletionResult.Success -> SimpleResult.Failure(Exception(ID).toBlockchainSdkError())
is CompletionResult.Failure -> SimpleResult.fromTangemSdkError(signerResponse.error)
}
}
private fun getDataToSign(): ByteArray {
val charPool: List<Char> = ('a'..'z') + ('A'..'Z') + ('0'..'9')
return IntRange(start = 1, endInclusive = 32)
.map { Random.nextInt(from = 0, until = charPool.size) }
.map(charPool::get)
.joinToString(separator = "")
.toByteArray()
}
companion object {
val ID: String = DemoTransactionSender::class.java.simpleName
private val minimumFee = 0.0001.toBigDecimal()
private val normalFee = 0.0002.toBigDecimal()
private val priorityFee = 0.0003.toBigDecimal()
}
}