iap - wip

Shared/views/StatusInfoView.swift

@@ -0,0 +1,143 @@
+//
+//  StatusInfoView.swift
+//  Feels
+//
+//  Created by Trey Tartt on 7/8/22.
+//
+
+import SwiftUI
+import StoreKit
+
+struct StatusInfoView: View {
+    @EnvironmentObject var iapManager: IAPManager
+
+    let product: Product
+    let status: Product.SubscriptionInfo.Status
+    
+    var body: some View {
+        ScrollView {
+            Text(statusDescription())
+                .frame(maxWidth: .infinity, alignment: .center)
+                .font(.body)
+        }
+        .frame(maxWidth: .infinity)
+        .frame(height: 75)
+    }
+    
+    //Build a string description of the subscription status to display to the user.
+    fileprivate func statusDescription() -> String {
+        guard case .verified(let renewalInfo) = status.renewalInfo,
+              case .verified(let transaction) = status.transaction else {
+            return "The App Store could not verify your subscription status."
+        }
+        
+        var description = ""
+        
+        switch status.state {
+        case .subscribed:
+            let renewToProduct: Product?
+            let renewalInfo: RenewalInfo?
+            
+            renewalInfo = try? iapManager.checkVerified(status.renewalInfo)
+            renewToProduct = iapManager.subscriptions.first(where: {
+                $0.key.id == renewalInfo?.autoRenewPreference
+            })?.key
+
+            description = subscribedDescription(expirationDate: transaction.expirationDate,
+                                                willRenew: renewalInfo?.willAutoRenew ?? false,
+                                                willRenewTo: renewToProduct)
+        case .expired:
+            if let expirationDate = transaction.expirationDate,
+               let expirationReason = renewalInfo.expirationReason {
+                description = expirationDescription(expirationReason, expirationDate: expirationDate)
+            }
+        case .revoked:
+            if let revokedDate = transaction.revocationDate {
+                description = "The App Store refunded your subscription to \(product.displayName) on \(revokedDate.formattedDate())."
+            }
+        case .inGracePeriod:
+            description = gracePeriodDescription(renewalInfo)
+        case .inBillingRetryPeriod:
+            description = billingRetryDescription()
+        default:
+            break
+        }
+        return description
+    }
+    
+    fileprivate func billingRetryDescription() -> String {
+        var description = "The App Store could not confirm your billing information for \(product.displayName)."
+        description += " Please verify your billing information to resume service."
+        return description
+    }
+    
+    fileprivate func gracePeriodDescription(_ renewalInfo: RenewalInfo) -> String {
+        var description = "The App Store could not confirm your billing information for \(product.displayName)."
+        if let untilDate = renewalInfo.gracePeriodExpirationDate {
+            description += " Please verify your billing information to continue service after \(untilDate.formattedDate())"
+        }
+        
+        return description
+    }
+    
+    fileprivate func subscribedDescription(expirationDate: Date?, willRenew: Bool, willRenewTo: Product?) -> String {
+        var description = "You are currently subscribed to \(product.displayName)"
+        
+        if let expirationDate = expirationDate {
+            description += ", which will expire on \(expirationDate.formattedDate()),"
+        }
+        
+        if willRenew {
+            if let willRenewTo = willRenewTo {
+                if willRenewTo == product {
+                    description += " and will auto renew."
+                } else {
+                    description += " and will auto renew to \(willRenewTo.displayName) at \(willRenewTo.displayPrice)."
+                }
+            }
+        } else {
+            description += " and will NOT auto renew."
+        }
+        
+        return description
+    }
+    
+    fileprivate func renewalDescription(_ renewalInfo: RenewalInfo, _ expirationDate: Date) -> String {
+        var description = ""
+        
+        if let newProductID = renewalInfo.autoRenewPreference {
+            if let newProduct = iapManager.subscriptions.first(where: { $0.key.id == newProductID }) {
+                description += "\nYour subscription to \(newProduct.key.displayName)"
+                description += " will begin when your current subscription expires on \(expirationDate.formattedDate())."
+            }
+        } else if renewalInfo.willAutoRenew {
+            description += "\nWill auto renew on: \(expirationDate.formattedDate())."
+        }
+        
+        return description
+    }
+    
+    //Build a string description of the `expirationReason` to display to the user.
+    fileprivate func expirationDescription(_ expirationReason: RenewalInfo.ExpirationReason, expirationDate: Date) -> String {
+        var description = ""
+        
+        switch expirationReason {
+        case .autoRenewDisabled:
+            if expirationDate > Date() {
+                description += "Your subscription to \(product.displayName) will expire on \(expirationDate.formattedDate())."
+            } else {
+                description += "Your subscription to \(product.displayName) expired on \(expirationDate.formattedDate())."
+            }
+        case .billingError:
+            description = "Your subscription to \(product.displayName) was not renewed due to a billing error."
+        case .didNotConsentToPriceIncrease:
+            description = "Your subscription to \(product.displayName) was not renewed due to a price increase that you disapproved."
+        case .productUnavailable:
+            description = "Your subscription to \(product.displayName) was not renewed because the product is no longer available."
+        default:
+            description = "Your subscription to \(product.displayName) was not renewed."
+        }
+        
+        return description
+    }
+}