Remote tabs: finishing touches

App/Sync/AttractorServer.swift

@@ -0,0 +1,76 @@
+//
+//  AttractorServer.swift
+//  App
+//
+//  Created by James Magahern on 8/5/22.
+//
+
+import Foundation
+
+class AttractorServer
+{
+    static let shared = AttractorServer()
+    
+    private var endpointURL: URL {
+        get { URL(string: Settings.shared.syncServer) ?? URL(string: "http://localhost")! }
+    }
+    
+    private func getHostname() -> String {
+        // Need an entitlement for this...
+        return UIDevice.current.name
+    }
+    
+    public func publishTabInfo(_ tabInfos: [TabInfo]) {
+        let hostName = getHostname()
+        let rpcURL = endpointURL.appendingPathComponent("publishTabInfo")
+        var components = URLComponents(url: rpcURL, resolvingAgainstBaseURL: false)!
+        components.queryItems = [
+            URLQueryItem(name: "host", value: hostName)
+        ]
+        
+        let encoder = JSONEncoder()
+        if let bodyData = try? encoder.encode(tabInfos) {
+            var request = URLRequest(url: components.url!)
+            request.httpBody = bodyData
+            request.httpMethod = "POST"
+            
+            let dataTask = URLSession.shared.dataTask(with: request) { (data, response, error) in
+                if let error {
+                    print("Error publishing tab info: \(error.localizedDescription)")
+                }
+            }
+            
+            dataTask.resume()
+        }
+    }
+    
+    public func getTabInfos(_ completion: @escaping(Result<[String: [TabInfo]], Error>) -> Void) {
+        let rpcURL = endpointURL.appendingPathComponent("getTabInfos")
+        let request = URLRequest(url: rpcURL)
+        let myHostname = getHostname()
+        let dataTask = URLSession.shared.dataTask(with: request) { (data, response, error) in
+            if let error {
+                print("Error getting tab infos: \(error.localizedDescription)")
+                DispatchQueue.main.async { completion(.failure(error)) }
+            }
+            
+            let decoder = JSONDecoder()
+            if let data {
+                do {
+                    let result = try decoder.decode([String: [TabInfo]].self, from: data)
+                        .filter({ (host, tabInfo) in
+                            // Filter out tabs from the same machine.
+                            return host != myHostname
+                        })
+                    
+                    DispatchQueue.main.async { completion(.success(result)) }
+                } catch {
+                    print("Error decoding tabs: \(error.localizedDescription)")
+                    DispatchQueue.main.async { completion(.failure(error)) }
+                }
+            }
+        }
+        
+        dataTask.resume()
+    }
+}