Validate emails for coupon

Author: itsmeichigo

WooCommerce/Classes/ViewRelated/Coupons/Add and Edit Coupons/UsageDetails/CouponAllowedEmails.swift

@@ -4,6 +4,7 @@ import SwiftUI
 ///
 struct CouponAllowedEmails: View {
     @ObservedObject private var viewModel: CouponAllowedEmailsViewModel
+    @Environment(\.presentationMode) var presentation
 
     init(viewModel: CouponAllowedEmailsViewModel) {
         self.viewModel = viewModel
@@ -31,11 +32,14 @@ struct CouponAllowedEmails: View {
         .navigationBarTitleDisplayMode(.inline)
         .toolbar {
             ToolbarItem(placement: .navigationBarTrailing) {
-                Button(action: {
-                    viewModel.validateEmails()
-                }, label: Localization.done)
+                Button(Localization.done) {
+                    viewModel.validateEmails {
+                        presentation.wrappedValue.dismiss()
+                    }
+                }
             }
         }
+        .wooNavigationBarStyle()
     }
 }
 

WooCommerce/Classes/ViewRelated/Coupons/Add and Edit Coupons/UsageDetails/CouponAllowedEmailsViewModel.swift

@@ -1,4 +1,5 @@
 import Foundation
+import WordPressShared
 
 /// View model for `CouponAllowedEmails` view.
 ///
@@ -16,8 +17,12 @@ final class CouponAllowedEmailsViewModel: ObservableObject {
 
     /// Validate the input
     ///
-    func validateEmails() -> Bool {
-        // TODO: implement this
-        return true
+    func validateEmails(dismissHandler: @escaping () -> Void) {
+        let emails = emailPatterns.components(separatedBy: ", ")
+        foundInvalidPatterns = emails.contains(where: { !EmailFormatValidator.validate(string: $0) })
+        if !foundInvalidPatterns {
+            onCompletion(emailPatterns)
+            dismissHandler()
+        }
     }
 }