Added printing system called GPS

Sources/Satellite/Satellite.GPS.swift

@@ -0,0 +1,27 @@
+//
+//  Satellite.GPS.swift
+//  
+//
+//  Created by Jaesung Lee on 2023/06/04.
+//
+
+import Foundation
+
+extension Satellite {
+    /// Start Global Printing System
+    public func _startGPS() {
+        self._isGPSEnabled = true
+    }
+
+    /// Start Global Printing System
+    public func _endGPT() {
+        self._isGPSEnabled = false
+    }
+
+    public func showGPT(_ stringValue: String, function: StaticString = #function, file: StaticString = #fileID, line: UInt = #line) {
+        guard _isGPSEnabled else { return }
+        let log = ("\n🛰️ Satellite: \(host)\t\(Date())\n📄file: \(file)\tline: \(line)\tfunction: \(function)\n📡 \(stringValue)\n")
+        print(log)
+        _gpsLogs.append(log)
+    }
+}

Sources/Satellite/Satellite.swift

@@ -32,6 +32,9 @@ public class Satellite {
     /// The host domain such as `apple.com` or `icloud.com`.
     public let host: String
 
+    var _isGPSEnabled: Bool = false
+    var _gpsLogs: [String] = []
+
     /// The base URL that is a combination of ``scheme`` and ``host``.
     /// `https://apple.com`
     public var baseURL: String {
@@ -70,14 +73,21 @@ public class Satellite {
             httpBody: httpBody
         )
         let (data, response) = try await URLSession.shared.data(for: urlRequest)
+        showGPT(String(data: data, encoding: .utf8) ?? "Unknown data")
         guard let httpResponse = response as? HTTPURLResponse else {
-            throw Satellite.Error.responseHasNoData
+            let error = Satellite.Error.responseHasNoData
+            showGPT(error.description)
+            throw error
         }
         guard (200..<300) ~= httpResponse.statusCode else {
-            throw Satellite.Error.statusCode(httpResponse.statusCode)
+            let error = Satellite.Error.statusCode(httpResponse.statusCode)
+            showGPT(error.description)
+            throw error
         }
         guard let output = try? JSONDecoder().decode(ResponseType.self, from: data) else {
-            throw Satellite.Error.responseIsFailedDecoding
+            let error = Satellite.Error.responseIsFailedDecoding
+            showGPT(error.description)
+            throw error
         }
         return output
     }
@@ -106,12 +116,17 @@ public class Satellite {
         )
         let publisher = URLSession.shared
             .dataTaskPublisher(for: urlRequest)
-            .tryMap { (data, response) in
+            .tryMap { [weak self] (data, response) in
+                self?.showGPT(String(data: data, encoding: .utf8) ?? "Unknown data")
                 guard let httpResponse = response as? HTTPURLResponse else {
-                    throw Satellite.Error.requestIsFailed
+                    let error = Satellite.Error.requestIsFailed
+                    self?.showGPT(error.description)
+                    throw error
                 }
                 guard (200..<300) ~= httpResponse.statusCode else {
-                    throw Satellite.Error.statusCode(httpResponse.statusCode)
+                    let error = Satellite.Error.statusCode(httpResponse.statusCode)
+                    self?.showGPT(error.description)
+                    throw error
                 }
                 return data
             }
@@ -127,14 +142,19 @@ public class Satellite {
         httpHeaders: [String: String]?,
         httpBody: (any Encodable)?
     ) throws -> URLRequest {
+        showGPT("\(baseURL)/\(path)")
         guard var components = URLComponents(string: "\(baseURL)/\(path)") else {
-            throw Satellite.Error.urlIsInvalid
+            let error = Satellite.Error.urlIsInvalid
+            showGPT(error.description)
+            throw error
         }
         if let queryItems {
             components.queryItems = queryItems
         }
         guard let url = components.url else {
-            throw Satellite.Error.urlIsInvalid
+            let error = Satellite.Error.urlIsInvalid
+            showGPT(error.description)
+            throw error
         }
         var urlRequest = URLRequest(url: url, timeoutInterval: 5.0)
         urlRequest.httpMethod = httpMethod.rawValue
@@ -146,6 +166,7 @@ public class Satellite {
         if let httpBody {
             urlRequest.httpBody = try JSONEncoder().encode(httpBody)
         }
+        showGPT(urlRequest.description)
         return urlRequest
     }
 }

Tests/SatelliteTests/SatelliteTests.swift

@@ -28,8 +28,22 @@ final class SatelliteTests: XCTestCase {
             XCTAssertFalse($0.text.isEmpty)
         }
     }
+
+    func test_globalPrintingSystem() async throws {
+        let satellite = Satellite(host: "cat-fact.herokuapp.com")
+        satellite._startGPS()
+        let _: [CatFact] = try await satellite.response(
+            for: "facts/random",
+            httpMethod: .get,
+            queryItems: [
+                URLQueryItem(name: "animal_type", value: "cat"),
+                URLQueryItem(name: "amount", value: "2")
+            ]
+        )
+        XCTAssertFalse(satellite._gpsLogs.isEmpty)
+    }
 }
 
 struct CatFact: Codable {
     let text: String
-}
+}