♻️ Refactor watchOS content view

ios/WatchRunner Watch App/Services/NetworkService.swift

@@ -0,0 +1,69 @@
+//
+//  NetworkService.swift
+//  WatchRunner Watch App
+//
+//  Created by LittleSheep on 2025/10/29.
+//
+
+import Foundation
+
+// MARK: - Network Service
+
+class NetworkService {
+    private let session = URLSession.shared
+
+    func fetchActivities(filter: String, cursor: String? = nil, token: String, serverUrl: String) async throws -> [SnActivity] {
+        guard let baseURL = URL(string: serverUrl) else {
+            throw URLError(.badURL)
+        }
+        var components = URLComponents(url: baseURL.appendingPathComponent("/sphere/activities"), resolvingAgainstBaseURL: false)!
+        var queryItems = [URLQueryItem(name: "take", value: "20")]
+        if filter.lowercased() != "explore" {
+            queryItems.append(URLQueryItem(name: "filter", value: filter.lowercased()))
+        }
+        if let cursor = cursor {
+            queryItems.append(URLQueryItem(name: "cursor", value: cursor))
+        }
+        components.queryItems = queryItems
+
+        var request = URLRequest(url: components.url!)
+        request.httpMethod = "GET"
+        request.setValue("application/json", forHTTPHeaderField: "Accept")
+        
+        request.setValue("AtField \(token)", forHTTPHeaderField: "Authorization")
+        request.setValue("SolianWatch/1.0", forHTTPHeaderField: "User-Agent")
+
+        let (data, _) = try await session.data(for: request)
+        
+        let decoder = JSONDecoder()
+        decoder.dateDecodingStrategy = .iso8601
+        decoder.keyDecodingStrategy = .convertFromSnakeCase
+        
+        return try decoder.decode([SnActivity].self, from: data)
+    }
+
+    func createPost(title: String, content: String, token: String, serverUrl: String) async throws {
+        guard let baseURL = URL(string: serverUrl) else {
+            throw URLError(.badURL)
+        }
+        let url = baseURL.appendingPathComponent("/sphere/posts")
+
+        var request = URLRequest(url: url)
+        request.httpMethod = "POST"
+        request.setValue("application/json", forHTTPHeaderField: "Content-Type")
+        request.setValue("application/json", forHTTPHeaderField: "Accept")
+        request.setValue("AtField \(token)", forHTTPHeaderField: "Authorization")
+        request.setValue("SolianWatch/1.0", forHTTPHeaderField: "User-Agent")
+
+        let body: [String: Any] = ["title": title, "content": content]
+        request.httpBody = try JSONSerialization.data(withJSONObject: body)
+
+        let (data, response) = try await session.data(for: request)
+
+        if let httpResponse = response as? HTTPURLResponse, httpResponse.statusCode != 201 {
+            let responseBody = String(data: data, encoding: .utf8) ?? ""
+            print("[watchOS] createPost failed with status code: \(httpResponse.statusCode), body: \(responseBody)")
+            throw URLError(URLError.Code(rawValue: httpResponse.statusCode))
+        }
+    }
+}