49 lines
1.8 KiB
Kotlin
49 lines
1.8 KiB
Kotlin
/*
|
|
* Copyright 2016 Christian Basler
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package ch.dissem.apps.abit.adapter
|
|
|
|
import android.content.Context
|
|
import android.preference.PreferenceManager
|
|
import ch.dissem.bitmessage.InternalContext
|
|
import ch.dissem.bitmessage.ports.ProofOfWorkEngine
|
|
|
|
/**
|
|
* Switches between two [ProofOfWorkEngine]s depending on the configuration.
|
|
*
|
|
* @author Christian Basler
|
|
*/
|
|
class SwitchingProofOfWorkEngine(
|
|
private val ctx: Context,
|
|
private val preference: String,
|
|
private val option: ProofOfWorkEngine,
|
|
private val fallback: ProofOfWorkEngine
|
|
) : ProofOfWorkEngine, InternalContext.ContextHolder {
|
|
|
|
override fun calculateNonce(initialHash: ByteArray, target: ByteArray, callback: ProofOfWorkEngine.Callback) {
|
|
val preferences = PreferenceManager.getDefaultSharedPreferences(ctx)
|
|
if (preferences.getBoolean(preference, false)) {
|
|
option.calculateNonce(initialHash, target, callback)
|
|
} else {
|
|
fallback.calculateNonce(initialHash, target, callback)
|
|
}
|
|
}
|
|
|
|
override fun setContext(context: InternalContext) = listOf(option, fallback)
|
|
.filterIsInstance<InternalContext.ContextHolder>()
|
|
.forEach { it.setContext(context) }
|
|
}
|