First commit

Author: otaviokz

.gitignore

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+.DS_Store
+/.build
+/Packages
+xcuserdata/
+DerivedData/
+.swiftpm/configuration/registries.json
+.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
+.netrc

.swiftpm/xcode/package.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

Package.swift

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+// swift-tools-version: 5.9
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "JSONHTTPClient",
+    platforms: [.iOS("13.0"), .macOS(.v12)],
+    products: [
+        // Products define the executables and libraries a package produces, making them visible to other packages.
+        .library(
+            name: "JSONHTTPClient",
+            targets: ["JSONHTTPClient"]),
+    ],
+    targets: [
+        // Targets are the basic building blocks of a package, defining a module or a test suite.
+        // Targets can depend on other targets in this package and products from dependencies.
+        .target(
+            name: "JSONHTTPClient"),
+        .testTarget(
+            name: "JSONHTTPClientTests",
+            dependencies: ["JSONHTTPClient"]),
+    ]
+)

README.md

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+## Overview
+
+This package is meant as a very simple HTTP client for use in HTTP connections that return JSON data. It only implements GET and POST URL methods. 
+
+Methods available:
+
+```Swift
+func get<T: Decodable>(_ url: URL, headers httpHeaders: [String: String]?) async throws -> T
+
+func postJSON<T: Decodable>(_ url: URL, body: Data, httpHeaders: [String: String]?) async throws -> T
+``` 
+
+Note that the ```postJSON``` method automatically adds **{ "Content-Type": "application.json" }** to the URLRequest headers.
+
+The POST method's ```Data``` parameter doesn't need to be JSON related, but the method expects that some serialized JSON data will be returned, which it will try to decode to the type specified on it's invocation.
+
+### Usage examples:
+
+```Swift
+public struct MovieSummary: Codable {
+	public let id: Int
+	public let overview: String
+	public let posterPath: String
+	public let releaseDate: String
+	public let title: String
+	public let voteAverage: Double
+}
+
+final class MoviesAPI {
+    func fetchPopularMovies() async throws -> [MovieSummary] {
+    		let popularMoviesPage: MovieSummariesPage = try await JSONHttpClient.shared.get(popularMoviesURL, headers: apiHeaders)
+    		return popularMoviesPage.movieSummaries
+    }    
+}
+
+```
+*The example above uses the [The Movie Database](https://www.themoviedb.org/) free API to fetch popular movies and related info.
+ 
+## Supported iOS Versions
+
+This package is meant to work with iOS 13 onwards.
+
+## Contact
+
+otaviokz@gmail.com
+
+[otaviokz.com](https://otaviokz.com)
+
+[linkedin.com/in/otaviokz](http://www.linkedin.com/in/otaviokz)
+
+## Licensing 
+
+#### <p>```  MIT Lisense  ```</p>
+
+Copyright (c) 2024 Otavio Zabaleta
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

Sources/JSONHTTPClient/JSONHTTPClient.swift

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+// The Swift Programming Language
+// https://docs.swift.org/swift-book
+
+import Foundation
+
+@available(iOS 13.0.0, *)
+public protocol JSONHTTPClientType {
+    func get<T: Decodable>(_ url: URL, headers httpHeaders: [String: String]?) async throws -> T
+    func postJSON<T: Decodable>(_ url: URL, body: Data, httpHeaders: [String: String]?) async throws -> T
+}
+
+@available(iOS 13.0.0, *)
+public struct JSONHTTPClient: JSONHTTPClientType {
+    public static let shared = JSONHTTPClient()
+    
+    private init() {}
+    
+    public func get<T: Decodable>(_ url: URL, headers httpHeaders: [String: String]?) async throws -> T {
+        try await connect(.get(url).headers(httpHeaders))
+        
+    }
+    
+    public func postJSON<T: Decodable>(_ url: URL, body: Data, httpHeaders: [String: String]?) async throws -> T {
+        try await connect(.postJSON(body, to: url).headers(httpHeaders))
+    }
+}
+
+@available(iOS 13.0.0, *)
+private extension JSONHTTPClient {
+    func connect<T: Decodable>(_ request: URLRequest) async throws -> T {
+        let (data, rulResponse) = try await URLSession.shared.data(for: request)
+        if let httpUrlResponse = rulResponse as? HTTPURLResponse {
+            guard httpUrlResponse.statusCode == 200 else {
+                throw  JSONHTTPClientError.http(code: httpUrlResponse.statusCode)
+            }
+        }
+        
+        do {
+            return try JSONDecoder().decode(T.self, from: data)
+        } catch {
+            throw JSONHTTPClientError.decode(error)
+        }
+    }
+}
+
+

Sources/JSONHTTPClient/JSONHTTPClientError.swift

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+//
+//  JSONHTTPClientError.swift
+//
+//
+//  Created by Otávio Zabaleta on 17/03/2024.
+//
+
+import Foundation
+
+public enum JSONHTTPClientError: Error {
+    case decode(Error)
+    case http(code: Int)
+}

Sources/JSONHTTPClient/URLRequests+Utils.swift

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+//
+//  URLRequests+Utils.swift
+//
+//
+//  Created by Otávio Zabaleta on 17/03/2024.
+//
+
+import Foundation
+
+enum HTTPMethod: String {
+    case post = "POST"
+    case get = "GET"
+}
+
+extension URLRequest {
+    private func method(_ method: HTTPMethod) -> URLRequest {
+        var request = self
+        request.httpMethod = method.rawValue
+        return request
+    }
+    
+    func body(_ body: Data) -> URLRequest {
+        var request = self
+        request.httpBody = body
+        return request
+    }
+    
+    static func postData(_ body: Data, to url: URL) -> URLRequest {
+        URLRequest(url: url).method(.post).body(body)
+    }
+    
+    static func postJSON(_ body: Data, to url: URL) -> URLRequest {
+        postData(body, to: url).withJSONHeaders()
+    }
+    
+    @inlinable func headers(_ headers: [String: String]?) -> Self {
+        guard let headers = headers else { return self }
+        var new = self//editable()
+        for (field, value) in headers {
+            new.setValue(value, forHTTPHeaderField: field)
+        }
+        return new
+    }
+    
+    @inlinable func withJSONHeaders() -> Self {
+        headers(["application.json": "Content-Type"])
+    }
+    
+    static func get(_ url: URL, cachePolicy: CachePolicy = .useProtocolCachePolicy) -> URLRequest {
+        URLRequest(url: url, cachePolicy: cachePolicy).method(.get)
+    }
+}

Tests/JSONHTTPClientTests/JSONHTTPClientTests.swift

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+import XCTest
+@testable import JSONHTTPClient
+
+final class JSONHTTPClientTests: XCTestCase {
+    func testExample() throws {
+        // XCTest Documentation
+        // https://developer.apple.com/documentation/xctest
+
+        // Defining Test Cases and Test Methods
+        // https://developer.apple.com/documentation/xctest/defining_test_cases_and_test_methods
+    }
+}