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Issue mozilla-mobile#9813
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@gabrielluong
gabrielluong committed May 18, 2021
1 parent 3126928 commit 0169121
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24 changes: 24 additions & 0 deletions .../sync-autofill/src/main/java/mozilla/components/service/sync/autofill/CreditCardIssuer.kt
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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */

package mozilla.components.service.sync.autofill

import androidx.annotation.DrawableRes

/**
* Information about a credit card issuer.
*
* @param name The name of the credit card issuer.
* @param icon The icon of the credit card issuer.
* @param start
* @param end
* @param cardNumberMaxLength The maximum card number length for the credit card name.
*/
data class CreditCardIssuer(
val name: String,
@DrawableRes val icon: Int,
val start: Int,
val end: Int,
val cardNumberMaxLength: List<Int>
)
100 changes: 100 additions & 0 deletions ...nc-autofill/src/main/java/mozilla/components/service/sync/autofill/CreditCardsProvider.kt
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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */

package mozilla.components.service.sync.autofill

import mozilla.components.browser.storage.sync.autofill.R
import kotlin.math.floor
import kotlin.math.log10

/**
*
*/
internal object CreditCardsProvider {

private val creditCardIssuers = listOf(
CreditCardIssuer(
name = CreditCardIssuerType.AMEX.cardName,
icon = R.drawable.ic_cc_logo_visa,
start = 34,
end = 34,
cardNumberMaxLength = listOf(15)
),
CreditCardIssuer(
name = CreditCardIssuerType.DINERS.cardName,
icon = R.drawable.ic_cc_logo_diners,
start = 300,
end = 305,
cardNumberMaxLength = listOf(14)
),
CreditCardIssuer(
name = CreditCardIssuerType.DISCOVER.cardName,
icon = R.drawable.ic_cc_logo_visa,
start = 6011,
end = 6011,
cardNumberMaxLength = listOf(16)
)
// CreditCardIssuerType.JCB.cardName to CreditCardIssuer(
// name = CreditCardIssuerType.JCB.cardName,
// icon = R.drawable.ic_cc_logo_jcb,
// cardNumberMaxLength = listOf(16)
// ),
// CreditCardIssuerType.MASTERCARD.cardName to CreditCardIssuer(
// name = CreditCardIssuerType.MASTERCARD.cardName,
// icon = R.drawable.ic_cc_logo_mastercard,
// cardNumberMaxLength = listOf(16)
// ),
// CreditCardIssuerType.MIR.cardName to CreditCardIssuer(
// name = CreditCardIssuerType.MIR.cardName,
// icon = R.drawable.ic_cc_logo_mir,
// cardNumberMaxLength = listOf(16)
// ),
// CreditCardIssuerType.UNIONPAY.cardName to CreditCardIssuer(
// name = CreditCardIssuerType.UNIONPAY.cardName,
// icon = R.drawable.ic_cc_logo_unionpay,
// cardNumberMaxLength = listOf(19)
// ),
// CreditCardIssuerType.VISA.cardName to CreditCardIssuer(
// name = CreditCardIssuerType.VISA.cardName,
// icon = R.drawable.ic_cc_logo_visa,
// cardNumberMaxLength = listOf(16)
// )
)

/**
* @param cardNumber
*/
fun getCreditCardIssuer(cardNumber: String): CreditCardIssuer? {
for (issuer in creditCardIssuers) {
if (issuer.cardNumberMaxLength.any { cardNumber.length != it }) {
continue
}

val prefixLength = floor(log10(issuer.start.toDouble())) + 1
val prefix = cardNumber.substring(0, prefixLength.toInt()).toInt()

if (prefix >= issuer.start && prefix <= issuer.end) {
return issuer
}
}

return null
}

/**
* Enum of supported credit card issuer types.
*/
enum class CreditCardIssuerType(val cardName: String) {
AMEX("amex"),
DINERS("diners"),
DISCOVER("discover")
// JCB("jcb"),
// MASTERCARD("mastercard"),
// MIR("mir"),
// UNIONPAY("unionpay"),
// VISA("visa")
}
}

fun String.cardType() = CreditCardsProvider.getCreditCardIssuer(this)
79 changes: 79 additions & 0 deletions components/service/sync-autofill/src/main/res/drawable/ic_cc_logo_diners.xml
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