Networking rework: simplified API calls.

2023-11-16 13:13:06 +01:00
parent 17678dea5f
commit 3563c23e29
14 changed files with 731 additions and 97 deletions
--- a/Client/Network/CookbookApi/ApiRequest.swift
+++ b/Client/Network/CookbookApi/ApiRequest.swift
@@ -0,0 +1,100 @@
+//
+//  ApiRequest.swift
+//  Nextcloud Cookbook iOS Client
+//
+//  Created by Vincent Meilinger on 16.11.23.
+//
+
+import Foundation
+import OSLog
+
+struct ApiRequest {
+    /// The server address, e.g. https://example.com
+    let serverAddress: String
+    let path: String
+    let method: RequestMethod
+    let authString: String?
+    let headerFields: [HeaderField]
+    let body: Data?
+    
+    /// The path to the Cookbook application on the nextcloud server.
+    let cookbookPath = "/index.php/apps/cookbook"
+        
+    init(
+        serverAdress: String,
+        path: String,
+        method: RequestMethod,
+        authString: String? = nil,
+        headerFields: [HeaderField] = [],
+        body: Data? = nil
+    ) {
+        self.serverAddress = serverAdress
+        self.method = method
+        self.path = path
+        self.headerFields = headerFields
+        self.authString = authString
+        self.body = body
+    }
+    
+    func send() async -> (Data?, NetworkError?) {
+        Logger.network.debug("\(method.rawValue) \(path) sending ...")
+        
+        // Prepare URL
+        let urlString = serverAddress + cookbookPath + path
+        Logger.network.debug("Full path: \(urlString)")
+        guard let urlStringSanitized = urlString.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed) else { return (nil, .unknownError) }
+        guard let url = URL(string: urlStringSanitized) else { return (nil, .unknownError) }
+        
+        // Create URL request
+        var request = URLRequest(url: url)
+        request.httpMethod = method.rawValue
+        
+        // Set authentication string, if needed
+        if let authString = authString {
+            request.setValue(
+                "Basic \(authString)",
+                forHTTPHeaderField: "Authorization"
+            )
+        }
+        
+        // Set other header fields
+        for headerField in headerFields {
+            request.setValue(
+                headerField.getValue(),
+                forHTTPHeaderField: headerField.getField()
+            )
+        }
+        
+        // Set http body
+        if let body = body {
+            request.httpBody = body
+        }
+                
+        // Wait for and return data and (decoded) response
+        var data: Data? = nil
+        var response: URLResponse? = nil
+        do {
+            (data, response) = try await URLSession.shared.data(for: request)
+            Logger.network.debug("\(method.rawValue) \(path) SUCCESS!")
+            return (data, nil)
+        } catch {
+            let error = decodeURLResponse(response: response as? HTTPURLResponse)
+            Logger.network.debug("\(method.rawValue) \(path) FAILURE: \(error.debugDescription)")
+            return (nil, error)
+        }
+    }
+    
+    private func decodeURLResponse(response: HTTPURLResponse?) -> NetworkError? {
+        guard let response = response else {
+            return NetworkError.unknownError
+        }
+        switch response.statusCode {
+            case 200...299: return (nil)
+            case 300...399: return (NetworkError.redirectionError)
+            case 400...499: return (NetworkError.clientError)
+            case 500...599: return (NetworkError.serverError)
+            case 600: return (NetworkError.invalidRequest)
+            default: return (NetworkError.unknownError)
+        }
+    }
+}