feat(ios): files sending

ios/Classes/Store/NearbyDevicesStore.swift

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+//
+//  NearbyDevicesStore.swift
+//  nearby_service
+//
+//  Created by Kseniia Nikitina on 16/1/24.
+//
+
+import Foundation
+import MultipeerConnectivity
+
+class NearbyDevicesStore : NSObject {
+    static let instance = NearbyDevicesStore()
+    
+    private var devices : [NearbyDevice] = []
+    
+    func getDevices() -> [NearbyDevice] {
+        return devices
+    }
+    
+    func find(for deviceId: String) -> NearbyDevice? {
+        return devices.first { device in
+            return device.peerID.displayName == deviceId
+        }
+    }
+
+    
+    func add(for peerID: MCPeerID, discoveryInfo: [String: String]? = nil) -> NearbyDevice? {
+        devices = devices.filter{$0.peerID.displayName != peerID.displayName}
+        
+        let device = NearbyDevice.fromDictionary(for: discoveryInfo, with: peerID)
+        self.devices.append(device)
+        
+        return device
+    }
+    
+    func remove(for peerID: MCPeerID) {
+        self.devices = devices.filter{$0.peerID.displayName != peerID.displayName}
+    }
+    
+    func clear() {
+        self.devices = []
+    }
+    
+    func toDartFormat() -> String {
+        let devicesObject = devices.map { device in
+            return device.toDictionary()
+        }
+        do {
+            let jsonData = try JSONSerialization.data(withJSONObject: devicesObject)
+            if let jsonString = String(data: jsonData, encoding: .utf8) {
+                return jsonString
+            }
+        } catch {
+            return "[]"
+        }
+        return "[]"
+    }
+    
+}

ios/Classes/Store/NearbyFilesStore.swift

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+//
+//  NearbyFilesStore.swift
+//  nearby_service
+//
+//  Created by Kseniia Nikitina on 3/2/24.
+//
+
+import Foundation
+
+class NearbyFilesStore {
+    static let instance = NearbyFilesStore()
+    
+    private var paths : [String] = []
+    private var id: String? = nil
+    private var maxCount: Int = 0
+    private var count: Int = 0
+    
+    func startReceiving(command: NearbyStartCommand) {
+        self.paths.removeAll()
+        self.id = command.id
+        self.maxCount = command.filesCount
+        self.count = 0
+    }
+    
+    func add(url: URL) {
+        paths.append(url.path)
+        self.count = self.count + 1
+    }
+    
+    func checkIsFull() -> Bool {
+        return maxCount <= count
+    }
+    
+    func toDartFormat() -> String? {
+        let pathsObject = paths.map { ["path": $0]}
+        do {
+            let jsonData = try JSONSerialization.data(withJSONObject: pathsObject)
+            if let jsonString = String(data: jsonData, encoding: .utf8) {
+                return jsonString
+            }
+        } catch {
+            return "[]"
+        }
+        return "[]"
+    }
+}