[Reliability] Add fallbacks for known Product decoding errors

Networking/Networking/Model/Product/Product.swift

@@ -357,7 +357,12 @@ public struct Product: Codable, GeneratedCopiable, Equatable, GeneratedFakeable
 
         let fullDescription = try container.decodeIfPresent(String.self, forKey: .fullDescription)
         let shortDescription = try container.decodeIfPresent(String.self, forKey: .shortDescription)
-        let sku = try container.decodeIfPresent(String.self, forKey: .sku)
+
+        // Even though a plain install of WooCommerce Core provides String values,
+        // some plugins alter the field value from String to Int or Decimal.
+        let sku = container.failsafeDecodeIfPresent(targetType: String.self,
+                                                    forKey: .sku,
+                                                    alternativeTypes: [.decimal(transform: { NSDecimalNumber(decimal: $0).stringValue })])
 
         // Even though a plain install of WooCommerce Core provides string values,
         // some plugins alter the field value from String to Int or Decimal.
@@ -424,7 +429,12 @@ public struct Product: Codable, GeneratedCopiable, Equatable, GeneratedFakeable
         let backordered = try container.decode(Bool.self, forKey: .backordered)
 
         let soldIndividually = try container.decodeIfPresent(Bool.self, forKey: .soldIndividually) ?? false
-        let weight = try container.decodeIfPresent(String.self, forKey: .weight)
+
+        // Even though a plain install of WooCommerce Core provides String values,
+        // some plugins alter the field value from String to Int or Decimal.
+        let weight = container.failsafeDecodeIfPresent(targetType: String.self,
+                                                       forKey: .weight,
+                                                       alternativeTypes: [.decimal(transform: { NSDecimalNumber(decimal: $0).stringValue })])
         let dimensions = try container.decode(ProductDimensions.self, forKey: .dimensions)
 
         let shippingRequired = try container.decode(Bool.self, forKey: .shippingRequired)

Networking/Networking/Model/Product/ProductDimensions.swift

@@ -17,6 +17,24 @@ public struct ProductDimensions: Codable, Equatable, GeneratedFakeable {
         self.width = width
         self.height = height
     }
+
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.container(keyedBy: CodingKeys.self)
+
+        // Even though a plain install of WooCommerce Core provides String dimension values,
+        // some plugins may alter the field values from String to Int or Decimal.
+        let length = container.failsafeDecodeIfPresent(targetType: String.self,
+                                                       forKey: .length,
+                                                       alternativeTypes: [.decimal(transform: { NSDecimalNumber(decimal: $0).stringValue })]) ?? ""
+        let width = container.failsafeDecodeIfPresent(targetType: String.self,
+                                                      forKey: .width,
+                                                      alternativeTypes: [.decimal(transform: { NSDecimalNumber(decimal: $0).stringValue })]) ?? ""
+        let height = container.failsafeDecodeIfPresent(targetType: String.self,
+                                                       forKey: .height,
+                                                       alternativeTypes: [.decimal(transform: { NSDecimalNumber(decimal: $0).stringValue })]) ?? ""
+
+        self.init(length: length, width: width, height: height)
+    }
 }
 
 /// Defines all of the Dimensions CodingKeys

Networking/Networking/Model/Product/ProductDownload.swift

@@ -23,7 +23,11 @@ public struct ProductDownload: Codable, Equatable, GeneratedFakeable {
     public init(from decoder: Decoder) throws {
         let container = try decoder.container(keyedBy: CodingKeys.self)
 
-        let downloadID = try container.decode(String.self, forKey: .downloadID)
+        // Even though a plain install of WooCommerce Core provides String values,
+        // some plugins alter the field value from String to Int or Decimal.
+        let downloadID = container.failsafeDecodeIfPresent(targetType: String.self,
+                                                           forKey: .downloadID,
+                                                           alternativeTypes: [.decimal(transform: { NSDecimalNumber(decimal: $0).stringValue })]) ?? "0"
         let name = try container.decodeIfPresent(String.self, forKey: .name)
         let fileURL = try container.decodeIfPresent(String.self, forKey: .fileURL)
 

Networking/NetworkingTests/Mapper/ProductMapperTests.swift

@@ -117,6 +117,12 @@ final class ProductMapperTests: XCTestCase {
         XCTAssertFalse(product.soldIndividually)
         XCTAssertTrue(product.purchasable)
         XCTAssertEqual(product.permalink, "")
+        XCTAssertEqual(product.sku, "123")
+        XCTAssertEqual(product.weight, "213")
+        XCTAssertEqual(product.dimensions.length, "12")
+        XCTAssertEqual(product.dimensions.width, "33")
+        XCTAssertEqual(product.dimensions.height, "54")
+        XCTAssertEqual(product.downloads.first?.downloadID, "12345")
     }
 
     /// 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/Responses/product-alternative-types.json

@@ -14,7 +14,7 @@
             "catalog_visibility": "visible",
             "description": "<p>This is the party room!</p>\n",
             "short_description": "[contact-form]\n<p>The green room&#8217;s max capacity is 30 people. Reserving the date / time of your event is free. We can also accommodate large groups, with seating for 85 board game players at a time. If you have a large group, let us know and we&#8217;ll send you our large group rate.</p>\n<p>GROUP RATES</p>\n<p>Reserve your event for up to 30 guests for $100.</p>\n",
-            "sku": "",
+            "sku": 123,
             "price": 17,
             "regular_price": 12.89,
             "sale_price": 26.73,
@@ -28,7 +28,11 @@
             "total_sales": 0,
             "virtual": true,
             "downloadable": false,
-            "downloads": [],
+            "downloads": [{
+                "id" : 12345,
+                "name" : "Song #1",
+                "file" : "https://example.com/woo-single-1.ogg"
+              }],
             "download_limit": -1,
             "download_expiry": -1,
             "external_url": "http://somewhere.com",
@@ -42,11 +46,11 @@
             "backorders_allowed": false,
             "backordered": false,
             "sold_individually": null,
-            "weight": "213",
+            "weight": 213,
             "dimensions": {
-                "length": "12",
-                "width": "33",
-                "height": "54"
+                "length": 12,
+                "width": 33,
+                "height": 54
             },
             "shipping_required": false,
             "shipping_taxable": false,

RELEASE-NOTES.txt

@@ -3,6 +3,7 @@
 13.9
 -----
 - [*] 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 `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]
 
 13.8
 -----