[Library] iTunes library (#5)

This PR contains the work done to implement the `iTunesService` service that fetches the reviews from the **Apple App Store**. Reviewed-on: rock-n-code/app-reviews#5 Co-authored-by: Javier Cicchelli <javier@rock-n-code.com> Co-committed-by: Javier Cicchelli <javier@rock-n-code.com>
2024-03-17 22:48:27 +00:00
parent 4359f53a19
commit 7c016b50d6
18 changed files with 850 additions and 3 deletions
@@ -0,0 +1,70 @@
+//
+//  GetReviewsAPIEndpoint.swift
+//  ReviewsiTunesKit
+//
+//  Created by Javier Cicchelli on 17/03/2024.
+//  Copyright © 2024 Röck+Cöde VoF. All rights reserved.
+//
+
+import Foundation
+import ReviewsFoundationKit
+import ReviewsFeedKit
+
+struct GetReviewsAPIEndpoint: GetReviewsEndpoint {
+    
+    // MARK: Constants
+    let host: URL
+    let decoder: JSONDecoder
+    let session: URLSession
+
+    // MARK: Functions
+    @discardableResult func callAsFunction(
+        _ input: ReviewsFeedKit.GetReviewsInput
+    ) async throws -> ReviewsFeedKit.GetReviewsOutput {
+        let path = try makePath(with: input)
+        let url = {
+            if #available(iOS 16.0, *) {
+                host.appending(path: path)
+            } else {
+                host.appendingPathComponent(path)
+            }
+        }()
+        
+        let (data, response) = try await session.data(from: url)
+        
+        guard let urlResponse = response as? HTTPURLResponse else {
+            throw EndpointError.responseNotFound
+        }
+
+        guard urlResponse.statusCode == 200 else {
+            throw EndpointError.requestFailed(statusCode: urlResponse.statusCode)
+        }
+        
+        let feed = try decoder.decode(Feed.self, from: data)
+        
+        return .init(reviews: feed.entries)
+    }
+    
+    func makePath(with input: GetReviewsInput) throws -> String {
+        guard
+            !input.appID.isEmpty,
+            !input.countryCode.isEmpty
+        else{
+            throw EndpointError.inputParametersEmpty
+        }
+
+        return .init(
+            format: .Format.recentReviewsPath,
+            input.countryCode,
+            input.appID
+        )
+    }
+    
+}
+
+// MARK: - String+Formats
+private extension String {
+    enum Format {
+        static let recentReviewsPath = "/%@/rss/customerreviews/id=%@/sortby=mostrecent/json"
+    }
+}