Extract CardAttributes from CardType #119
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,171 @@ | ||
| package com.braintreepayments.api | ||
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| import androidx.annotation.DrawableRes | ||
| import androidx.annotation.StringRes | ||
| import com.braintreepayments.api.cardform.R | ||
| import java.util.regex.Pattern | ||
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| /** | ||
| * @property pattern The regex matching this card type. | ||
| * @property relaxedPrefixPattern The relaxed prefix regex matching this card type. To be used in determining card type if no pattern matches. | ||
| * @property frontResource The android resource id for the front card image, highlighting card number format. | ||
| * @property securityCodeName The android resource id for the security code name for this card type. | ||
| * @property securityCodeLength The length of the current card's security code. | ||
| * @property minCardLength minimum length of a card for this {@link CardType} | ||
| * @property maxCardLength max length of a card for this {@link CardType} | ||
| * @property spaceIndices the locations where spaces should be inserted when formatting the card in a user friendly way. Only for display purposes. | ||
| */ | ||
| internal data class CardAttributes constructor( | ||
| val cardType: CardType, | ||
| @DrawableRes val frontResource: Int, | ||
| val maxCardLength: Int, | ||
| val minCardLength: Int, | ||
| val pattern: Pattern, | ||
| val relaxedPrefixPattern: Pattern? = null, | ||
| val securityCodeLength: Int, | ||
| @StringRes val securityCodeName: Int, | ||
| ) { | ||
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| val spaceIndices: IntArray = | ||
| if (cardType == CardType.AMEX) AMEX_SPACE_INDICES else DEFAULT_SPACE_INDICES | ||
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| fun matches(cardNumber: String) = matchesStrict(cardNumber) || matchesRelaxed(cardNumber) | ||
| fun matchesStrict(cardNumber: String) = pattern.matcher(cardNumber).matches() | ||
| fun matchesRelaxed(cardNumber: String) = | ||
| relaxedPrefixPattern?.matcher(cardNumber)?.matches() ?: false | ||
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| companion object { | ||
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| private val AMEX_SPACE_INDICES = intArrayOf(4, 10) | ||
| private val DEFAULT_SPACE_INDICES = intArrayOf(4, 8, 12) | ||
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| @JvmField | ||
| val EMPTY = CardAttributes( | ||
| cardType = CardType.EMPTY, | ||
| pattern = Pattern.compile("^$"), | ||
| frontResource = R.drawable.bt_ic_unknown, | ||
| minCardLength = 12, | ||
| maxCardLength = 19, | ||
| securityCodeLength = 3, | ||
| securityCodeName = R.string.bt_cvv, | ||
| ) | ||
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| val UNKNOWN = CardAttributes( | ||
| cardType = CardType.UNKNOWN, | ||
| pattern = Pattern.compile("\\d+"), | ||
| frontResource = R.drawable.bt_ic_unknown, | ||
| minCardLength = 12, | ||
| maxCardLength = 19, | ||
| securityCodeLength = 3, | ||
| securityCodeName = R.string.bt_cvv, | ||
| ) | ||
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| private val knownCardBrandAttributes = createCardAttributeMap( | ||
| CardAttributes( | ||
| cardType = CardType.HIPERCARD, | ||
| pattern = Pattern.compile("^606282\\d*"), | ||
| frontResource = R.drawable.bt_ic_hipercard, | ||
| minCardLength = 16, | ||
| maxCardLength = 16, | ||
| securityCodeLength = 3, | ||
| securityCodeName = R.string.bt_cvc, | ||
| ), | ||
| CardAttributes( | ||
| cardType = CardType.HIPER, | ||
| pattern = Pattern.compile("^637(095|568|599|609|612)\\d*"), | ||
| frontResource = R.drawable.bt_ic_hiper, | ||
| minCardLength = 16, | ||
| maxCardLength = 16, | ||
| securityCodeLength = 3, | ||
| securityCodeName = R.string.bt_cvc, | ||
| ), | ||
| CardAttributes( | ||
| cardType = CardType.UNIONPAY, | ||
| pattern = Pattern.compile("^62\\d*"), | ||
| frontResource = R.drawable.bt_ic_unionpay, | ||
| minCardLength = 16, | ||
| maxCardLength = 19, | ||
| securityCodeLength = 3, | ||
| securityCodeName = R.string.bt_cvn, | ||
| ), | ||
| CardAttributes( | ||
| cardType = CardType.VISA, | ||
| pattern = Pattern.compile("^4\\d*"), | ||
| frontResource = R.drawable.bt_ic_visa, | ||
| minCardLength = 16, | ||
| maxCardLength = 16, | ||
| securityCodeLength = 3, | ||
| securityCodeName = R.string.bt_cvv, | ||
| ), | ||
| CardAttributes( | ||
| cardType = CardType.MASTERCARD, | ||
| pattern = Pattern.compile("^(5[1-5]|222[1-9]|22[3-9]|2[3-6]|27[0-1]|2720)\\d*"), | ||
| frontResource = R.drawable.bt_ic_mastercard, | ||
| minCardLength = 16, | ||
| maxCardLength = 16, | ||
| securityCodeLength = 3, | ||
| securityCodeName = R.string.bt_cvc, | ||
| ), | ||
| CardAttributes( | ||
| cardType = CardType.DISCOVER, | ||
| pattern = Pattern.compile("^(6011|65|64[4-9]|622)\\d*"), | ||
| frontResource = R.drawable.bt_ic_discover, | ||
| minCardLength = 16, | ||
| maxCardLength = 19, | ||
| securityCodeLength = 3, | ||
| securityCodeName = R.string.bt_cid, | ||
| ), | ||
| CardAttributes( | ||
| cardType = CardType.AMEX, | ||
| pattern = Pattern.compile("^3[47]\\d*"), | ||
| frontResource = R.drawable.bt_ic_amex, | ||
| minCardLength = 15, | ||
| maxCardLength = 15, | ||
| securityCodeLength = 4, | ||
| securityCodeName = R.string.bt_cid, | ||
| ), | ||
| CardAttributes( | ||
| cardType = CardType.DINERS_CLUB, | ||
| pattern = Pattern.compile("^(36|38|30[0-5])\\d*"), | ||
| frontResource = R.drawable.bt_ic_diners_club, | ||
| minCardLength = 14, | ||
| maxCardLength = 14, | ||
| securityCodeLength = 3, | ||
| securityCodeName = R.string.bt_cvv, | ||
| ), | ||
| CardAttributes( | ||
| cardType = CardType.JCB, | ||
| pattern = Pattern.compile("^35\\d*"), | ||
| frontResource = R.drawable.bt_ic_jcb, | ||
| minCardLength = 16, | ||
| maxCardLength = 16, | ||
| securityCodeLength = 3, | ||
| securityCodeName = R.string.bt_cvv, | ||
| ), | ||
| CardAttributes( | ||
| cardType = CardType.MAESTRO, | ||
| pattern = Pattern.compile("^(5018|5020|5038|5043|5[6-9]|6020|6304|6703|6759|676[1-3])\\d*"), | ||
| frontResource = R.drawable.bt_ic_maestro, | ||
| minCardLength = 12, | ||
| maxCardLength = 19, | ||
| securityCodeLength = 3, | ||
| securityCodeName = R.string.bt_cvc, | ||
| relaxedPrefixPattern = Pattern.compile("^6\\d*") | ||
| ) | ||
| ) | ||
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| val allKnownCardBrands = knownCardBrandAttributes.values | ||
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| private fun createCardAttributeMap(vararg items: CardAttributes): Map<CardType, CardAttributes> { | ||
| val result = mutableMapOf<CardType, CardAttributes>() | ||
| for (item in items) { | ||
| result[item.cardType] = item | ||
| } | ||
| return result | ||
|
Comment on lines
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+164
Contributor
There was a problem hiding this comment. Take it or leave it comment - if there's a clean/easy way to just create a map literal for
Contributor
Author
There was a problem hiding this comment. Yeah I agree. It's a compile time vs. runtime tradeoff. I initially went for a when statement but duplicating mapOf(
CardType.VISA to CardAttributes(CardType.VISA, "^4\\d*", R.drawable.bt_ic_visa, 16, 16, 3, R.string.bt_cvv, null)
) |
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| } | ||
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| @JvmStatic | ||
| fun forCardType(cardType: CardType): CardAttributes = | ||
| knownCardBrandAttributes[cardType] ?: UNKNOWN | ||
| } | ||
| } | ||
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