Fix discover card and add unionPay

OmiseSDK/Resources/Assets.xcassets/Credit Card/Contents.json

@@ -1,6 +1,6 @@
 {
   "info" : {
-    "version" : 1,
-    "author" : "xcode"
+    "author" : "xcode",
+    "version" : 1
   }
-}
+}

OmiseSDK/Resources/Assets.xcassets/Credit Card/Discover.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images": [
+    {
+      "filename": "Discover.pdf",
+      "idiom": "universal"
+    }
+  ],
+  "info": {
+    "author": "xcode",
+    "version": 1
+  }
+}

OmiseSDK/Resources/Assets.xcassets/Credit Card/UnionPay.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images": [
+    {
+      "filename": "UnionPay.pdf",
+      "idiom": "universal"
+    }
+  ],
+  "info": {
+    "author": "xcode",
+    "version": 1
+  }
+}

OmiseSDK/Sources/Models/CardBrand.swift

@@ -17,6 +17,8 @@ public enum CardBrand: String, CustomStringConvertible, Codable {
     case laser = "Laser"
     /// Maestro card newtwork brand
     case maestro = "Maestro"
+    /// UnionPay card network brand
+    case unionPay = "UnionPay"
     /// Discover card newtwork brand
     case discover = "Discover"
 
@@ -28,7 +30,8 @@ public enum CardBrand: String, CustomStringConvertible, Codable {
         diners,
         laser,
         maestro,
-        discover
+        discover,
+        unionPay
     ]
 
     /// Regular expression pattern that can detect cards issued by the brand.
@@ -48,8 +51,10 @@ public enum CardBrand: String, CustomStringConvertible, Codable {
             return "^(6304|670[69]|6771)"
         case .maestro:
             return "^(5[0,6-8]|6304|6759|676[1-3])"
+        case .unionPay:
+            return "^62\\d{14,17}$"
         case .discover:
-            return "^(6011|622(12[6-9]|1[3-9][0-9]|[2-8][0-9]{2}|9[0-1][0-9]|92[0-5]|64[4-9])|65)"
+            return "^(6011\\d{12,15}|65\\d{14,17}|64[4-9]\\d{13,16}|6221[2-9]\\d{11,14}|622[3-9]\\d{12,15})$"
         }
     }
 
@@ -70,8 +75,10 @@ public enum CardBrand: String, CustomStringConvertible, Codable {
             return 16...19
         case .maestro:
             return 12...19
+        case .unionPay:
+            return 16...19
         case .discover:
-            return 16...16
+            return 16...19
         }
     }
 

OmiseSDK/Sources/Models/PAN.swift

@@ -39,17 +39,7 @@ public struct PAN {
 
     /// The suggested of where the space should be displayed string indexes
     public var suggestedSpaceFormattedIndexes: IndexSet {
-        switch self {
-        case CardBrand.amex.pattern, "^5[6-8]":
-            return [ 4, 10 ]
-        case "^50":
-            return [ 4, 8 ]
-        case "^3[0,6,8-9]":
-            return [ 4, 10 ]
-        case "^[0-9]":
-            return [ 4, 8, 12 ]
-        default: return []
-        }
+        return IndexSet(stride(from: 4, to: 19, by: 4))
     }
 
     /// The last 4 digits of the PAN number

OmiseSDK/Sources/Views/Components/TextFields/CardNumberTextField.swift

@@ -119,7 +119,9 @@ public class CardNumberTextField: OmiseTextField {
             options: .regularExpression,
             range: nil)
 
-        let panLength = (self.pan.brand?.validLengths.upperBound ?? 16) - (self.text?.count ?? 0) + selectedTextLength
+        // Using the current detected upper bound for the current brand will cause problems when swtching from
+        // a brand that has an upper bound that is lower than that of the pasted detected card. (ex from visa to discover). So the upper bound will be set to the highest upper bound available for cards which is 19
+        let panLength = 19 - (self.text?.count ?? 0) + selectedTextLength
         let maxPastingPANLength = min(pan.count, panLength)
         guard maxPastingPANLength > 0 else {
             return
@@ -306,7 +308,7 @@ extension CardNumberTextField {
         guard range.length >= 0 else {
             return true
         }
-        let maxLength = (pan.brand?.validLengths.upperBound ?? 16)
+        let maxLength = (pan.brand?.validLengths.upperBound ?? 19)
 
         return maxLength >= (self.text?.count ?? 0) - range.length + string.count
     }

OmiseSDK/Sources/Views/Screens/Credit Card Payment/CreditCardPaymentController.swift

@@ -547,6 +547,10 @@ class CreditCardPaymentController: UIViewController {
             cardBrandIconName = "AMEX"
         case .diners?:
             cardBrandIconName = "Diners"
+        case .unionPay:
+            cardBrandIconName = "UnionPay"
+        case .discover?:
+            cardBrandIconName = "Discover"
         default:
             cardBrandIconName = nil
         }