[Reliability] Add failsafe decoding for Bool when string/data is received

Networking/Networking/Model/Product/Product.swift

@@ -375,7 +375,11 @@ public struct Product: Codable, GeneratedCopiable, Equatable, GeneratedFakeable
                                                              alternativeTypes: [.decimal(transform: { NSDecimalNumber(decimal: $0).stringValue })])
             ?? ""
 
-        let onSale = try container.decode(Bool.self, forKey: .onSale)
+        // Even though WooCommerce Core returns Bool values,
+        // some plugins alter the field value from Bool to String.
+        let onSale = container.failsafeDecodeIfPresent(targetType: Bool.self,
+                                                       forKey: .onSale,
+                                                       alternativeTypes: [ .string(transform: { NSString(string: $0).boolValue })]) ?? false
 
         // Even though a plain install of WooCommerce Core provides string values,
         // some plugins alter the field value from String to Int or Decimal.
@@ -425,7 +429,13 @@ public struct Product: Codable, GeneratedCopiable, Equatable, GeneratedFakeable
         let stockStatusKey = try container.decode(String.self, forKey: .stockStatusKey)
 
         let backordersKey = try container.decode(String.self, forKey: .backordersKey)
-        let backordersAllowed = try container.decode(Bool.self, forKey: .backordersAllowed)
+
+        // Even though WooCommerce Core returns Bool values,
+        // some plugins alter the field value from Bool to String.
+        let backordersAllowed = container.failsafeDecodeIfPresent(targetType: Bool.self,
+                                                                  forKey: .backordersAllowed,
+                                                                  alternativeTypes: [ .string(transform: { NSString(string: $0).boolValue })]) ?? false
+
         let backordered = try container.decode(Bool.self, forKey: .backordered)
 
         let soldIndividually = try container.decodeIfPresent(Bool.self, forKey: .soldIndividually) ?? false

Networking/Networking/Model/Product/ProductVariation.swift

@@ -224,7 +224,12 @@ public struct ProductVariation: Codable, GeneratedCopiable, Equatable, Generated
                                                              forKey: .regularPrice,
                                                              alternativeTypes: [.decimal(transform: { NSDecimalNumber(decimal: $0).stringValue })])
             ?? ""
-        let onSale = try container.decode(Bool.self, forKey: .onSale)
+
+        // Even though WooCommerce Core returns Bool values,
+        // some plugins alter the field value from Bool to String.
+        let onSale = container.failsafeDecodeIfPresent(targetType: Bool.self,
+                                                       forKey: .onSale,
+                                                       alternativeTypes: [ .string(transform: { NSString(string: $0).boolValue })]) ?? false
 
         // Even though a plain install of WooCommerce Core provides string values,
         // some plugins alter the field value from String to Int or Decimal.
@@ -273,7 +278,13 @@ public struct ProductVariation: Codable, GeneratedCopiable, Equatable, Generated
         let stockStatusKey = try container.decode(String.self, forKey: .stockStatusKey)
         let stockStatus = ProductStockStatus(rawValue: stockStatusKey)
         let backordersKey = try container.decode(String.self, forKey: .backordersKey)
-        let backordersAllowed = try container.decode(Bool.self, forKey: .backordersAllowed)
+
+        // Even though WooCommerce Core returns Bool values,
+        // some plugins alter the field value from Bool to String.
+        let backordersAllowed = container.failsafeDecodeIfPresent(targetType: Bool.self,
+                                                                  forKey: .backordersAllowed,
+                                                                  alternativeTypes: [ .string(transform: { NSString(string: $0).boolValue })]) ?? false
+
         let backordered = try container.decode(Bool.self, forKey: .backordered)
 
         // Even though a plain install of WooCommerce Core provides String values,

Networking/NetworkingTests/Mapper/ProductMapperTests.swift

@@ -123,6 +123,8 @@ final class ProductMapperTests: XCTestCase {
         XCTAssertEqual(product.dimensions.width, "33")
         XCTAssertEqual(product.dimensions.height, "54")
         XCTAssertEqual(product.downloads.first?.downloadID, "12345")
+        XCTAssertEqual(product.backordersAllowed, true)
+        XCTAssertEqual(product.onSale, false)
     }
 
     /// Verifies that the `salePrice` field of the Product are parsed correctly when the product is on sale, and the sale price is an empty string

Networking/NetworkingTests/Mapper/ProductVariationMapperTests.swift

@@ -42,6 +42,8 @@ final class ProductVariationMapperTests: XCTestCase {
         XCTAssertEqual(productVariation.permalink, "")
         XCTAssertEqual(productVariation.sku, "12345")
         XCTAssertEqual(productVariation.weight, "2.5")
+        XCTAssertEqual(productVariation.backordersAllowed, true)
+        XCTAssertEqual(productVariation.onSale, false)
     }
 
     /// Test that the fields for variations of a subscription product are properly parsed.

Networking/NetworkingTests/Responses/product-alternative-types.json

@@ -23,7 +23,7 @@
             "date_on_sale_to": null,
             "date_on_sale_to_gmt": "2019-10-27T21:29:59",
             "price_html": "Free",
-            "on_sale": false,
+            "on_sale": "",
             "purchasable": 1,
             "total_sales": 0,
             "virtual": true,
@@ -43,7 +43,7 @@
             "stock_quantity": null,
             "stock_status": "instock",
             "backorders": "no",
-            "backorders_allowed": false,
+            "backorders_allowed": "1",
             "backordered": false,
             "sold_individually": null,
             "weight": 213,

Networking/NetworkingTests/Responses/product-variation-alternative-types.json

@@ -16,7 +16,7 @@
             "date_on_sale_from_gmt": "2019-10-15T21:30:00",
             "date_on_sale_to": "2019-10-27T23:59:59",
             "date_on_sale_to_gmt": "2019-10-27T21:29:59",
-            "on_sale": false,
+            "on_sale": "0",
             "status": "publish",
             "purchasable": 1,
             "virtual": false,
@@ -30,7 +30,7 @@
             "stock_quantity": 16,
             "stock_status": "instock",
             "backorders": "notify",
-            "backorders_allowed": true,
+            "backorders_allowed": "1",
             "backordered": false,
             "weight": 2.5,
             "dimensions": {

RELEASE-NOTES.txt

@@ -4,6 +4,7 @@
 -----
 - [*] Orders: Allow alternative types for the `taxID` in `ShippingLineTax` or `sku` in `OrderItem`, as some third-party plugins alter the type in the API. This helps with the order list not loading due to order decoding errors. [https://github.com/woocommerce/woocommerce-ios/pull/9844]
 - [*] Payments: Location permissions request is not shown to TTP users who grant "Allow once" permission on first foregrounding the app any more [https://github.com/woocommerce/woocommerce-ios/pull/9821]
+- [*] Products: Allow alternative types for the `backordersAllowed` and `onSale` in `Product` and `ProductVariation`, as some third-party plugins alter the types in the API. This helps with the product list not loading due to product decoding errors. [https://github.com/woocommerce/woocommerce-ios/pull/9849]
 - [*] Products: Allow alternative types for the `sku` and `weight` in `ProductVariation`, as some third-party plugins alter the types in the API. This helps with the product variation list not loading due to product variation decoding errors. [https://github.com/woocommerce/woocommerce-ios/pull/9847]
 - [*] Products: Allow alternative types for the `sku` and `weight` in `Product`, the dimensions in `ProductDimensions`, and the `downloadID` in `ProductDownload`, as some third-party plugins alter the types in the API. This helps with the product list not loading due to product decoding errors. [https://github.com/woocommerce/woocommerce-ios/pull/9846]