Create Post Service + assign :Encodable to Post [Model]

 - created Post Service file: with /POST request - /GET request to add later
- slight modification to the Post model to assign Encodable type due to JSON data needing to be in encoded format

MobileAcebook.xcodeproj/project.pbxproj

@@ -22,6 +22,7 @@
 		AE5D85E32AC9AFD2009680C6 /* MockAuthenticationService.swift in Sources */ = {isa = PBXBuildFile; fileRef = AE5D85E22AC9AFD2009680C6 /* MockAuthenticationService.swift */; };
 		AE5D85E62AC9B077009680C6 /* AuthenticationServiceProtocol.swift in Sources */ = {isa = PBXBuildFile; fileRef = AE5D85E52AC9B077009680C6 /* AuthenticationServiceProtocol.swift */; };
 		AE5D85E82AC9B29A009680C6 /* User.swift in Sources */ = {isa = PBXBuildFile; fileRef = AE5D85E72AC9B29A009680C6 /* User.swift */; };
+		C1615B992BCFEF2800A7AB81 /* PostService.swift in Sources */ = {isa = PBXBuildFile; fileRef = C1615B982BCFEF2800A7AB81 /* PostService.swift */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -60,6 +61,7 @@
 		AE5D85E22AC9AFD2009680C6 /* MockAuthenticationService.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MockAuthenticationService.swift; sourceTree = "<group>"; };
 		AE5D85E52AC9B077009680C6 /* AuthenticationServiceProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AuthenticationServiceProtocol.swift; sourceTree = "<group>"; };
 		AE5D85E72AC9B29A009680C6 /* User.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = User.swift; sourceTree = "<group>"; };
+		C1615B982BCFEF2800A7AB81 /* PostService.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PostService.swift; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -154,6 +156,7 @@
 			isa = PBXGroup;
 			children = (
 				AE5D85E02AC9AFA9009680C6 /* AuthenticationService.swift */,
+				C1615B982BCFEF2800A7AB81 /* PostService.swift */,
 			);
 			path = Services;
 			sourceTree = "<group>";
@@ -320,6 +323,7 @@
 				AE5D85E82AC9B29A009680C6 /* User.swift in Sources */,
 				0F81A0C72BCED6FD00AED673 /* SignUpPageView.swift in Sources */,
 				AE5D85DA2AC8A337009680C6 /* WelcomePageView.swift in Sources */,
+				C1615B992BCFEF2800A7AB81 /* PostService.swift in Sources */,
 				0F81A0C52BCE82C200AED673 /* LoginPageView.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;

MobileAcebook/Models/Post.swift

@@ -7,7 +7,7 @@
 
 import Foundation
 
-public struct Post {
+public struct Post: Encodable {
     let message: String
     let date: String
     let user: String

MobileAcebook/Services/PostService.swift

@@ -0,0 +1,58 @@
+//
+//  PostService.swift
+//  MobileAcebook
+//
+//  Created by Bogdan Stăiculescu on 17/04/2024.
+//
+
+import Foundation
+
+class postService {
+
+    // response returned on succesful /POST request
+    struct Response: Codable {
+        // let message : String
+        let token: String
+    }
+
+
+    func createPost(post: Post, token: String, completion: @escaping ((String) -> Void)) -> Bool {
+        // defining URL to which we make the POST on the Backend
+        guard let url = URL(string: "http://localhost:3000/posts") else
+        {return false}
+
+        // var that contains the URL request and content
+        var urlRequest = URLRequest(url: url)
+        // method of the createPost
+        urlRequest.httpMethod = "POST"
+        // value of the URL request that's being sent to backend [application/json]
+        urlRequest.setValue("application/json", forHTTPHeaderField: "Content-Type")
+        // also passing along Bearer and Token to show authorization
+        urlRequest.setValue("Bearer \(token)", forHTTPHeaderField: "Authorization")
+
+        // defining the body of the HTTP request
+        let body = post
+
+        urlRequest.httpBody = try? JSONEncoder().encode(body)
+
+        // defining what we do with the response of our request
+        let task = URLSession.shared.dataTask(with: urlRequest) {data, response, error in
+            // ensures there is data that returns after making the request ELSE print error
+            guard let data = data else {return}
+            // if there is data
+            do {
+                let response = try JSONDecoder().decode(Response.self, from: data)
+                //print(response.token)
+                DispatchQueue.main.async {
+                    completion(response.token)
+                }
+                print("Post Created")
+            }
+            catch {
+                print(error)
+            }
+        }
+        task.resume()
+        return true
+    }
+}