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path: root/wallee-c2ec/app/src/main/java/ch/bfh/habej2/wallee_c2ec/client/c2ec/C2ECClient.kt
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package ch.bfh.habej2.wallee_c2ec.client.c2ec

import ch.bfh.habej2.wallee_c2ec.config.CURRENT_EXCHANGE
import okhttp3.Interceptor
import okhttp3.OkHttpClient
import okhttp3.Response

class C2ECClient {

    companion object {
        const val WITHDRAWAL_OP = "/c2ec/withdrawal-operation"
        const val WITHDRAWAL_STATUS = "$WITHDRAWAL_OP/:wopid"
        const val WITHDRAWAL_PAYMENT = "$WITHDRAWAL_OP/:wopid/payment"
    }

    init {
        var client = OkHttpClient.Builder()
            .addInterceptor(C2ECBasicAuthInterceptor())
            .build();
    }

    fun retrieveWithdrawalStatus(wopid: String, longPollMs: Int): C2ECWithdrawalOperationStatus {

        println("retrieving withdrawal operation status...")
        return C2ECWithdrawalOperationStatus()
    }

    fun sendPaymentNotification(payment: C2ECPaymentNotification) {
        println("sending payment notification...")
    }

    private class C2ECBasicAuthInterceptor : Interceptor {

        override fun intercept(chain: Interceptor.Chain): Response {

            val base64EncodedCredentials = java.util.Base64
                .getUrlEncoder()
                .encode("${CURRENT_EXCHANGE!!.terminalId}:${CURRENT_EXCHANGE!!.accessToken}".toByteArray())
                .toString()

            return chain.proceed(
                chain.request().newBuilder()
                    .header("Authorization", base64EncodedCredentials)
                    .build()
            )
        }
    }
}