Implemented the DownloadView view for the Browse module.

Modules/Sources/Browse/UI/Views/DownloadView.swift

@@ -0,0 +1,104 @@
+//
+//  DownloadView.swift
+//  Browse
+//
+//  Created by Javier Cicchelli on 17/12/2022.
+//  Copyright © 2022 Röck+Cöde. All rights reserved.
+//
+
+import DataModels
+import Foundation
+import KeychainStorage
+import SwiftUI
+
+struct DownloadView: View {
+    
+    // MARK: Storages
+    
+    @KeychainStorage(key: .KeychainStorage.account) private var account: Account?
+    
+    // MARK: States
+    
+    @State private var data: Data?
+    
+    // MARK: Properties
+    
+    private let id: String
+    private let name: String
+    private let downloaded: ActionClosure
+    
+    private let getData: GetDataUseCase = .init()
+    
+    // MARK: Initialisers
+    
+    init(
+        id: String,
+        name: String,
+        data: Data? = nil,
+        downloaded: @escaping ActionClosure
+    ) {
+        self.id = id
+        self.name = name
+        self.downloaded = downloaded
+        
+        self._data = .init(initialValue: data)
+    }
+    
+    // MARK: Body
+    
+    var body: some View {
+        if let data {
+            SaveDocumentPicker(
+                fileName: name,
+                fileData: data
+            ) { error in
+                guard error == nil else {
+                    // TODO: Handle this error case.
+                    return
+                }
+                
+                downloaded()
+            }
+        } else {
+            LoadingView()
+                .task {
+                    await loadData()
+                }
+        }
+    }
+
+}
+
+// MARK: - Helpers
+
+private extension DownloadView {
+    func loadData() async {
+        guard let account else {
+            // TODO: Handle this error case.
+            return
+        }
+        
+        do {
+            data = try await getData(
+                id: id,
+                username: account.username,
+                password: account.password
+            )
+        } catch {
+            // TODO: Handle this error case.
+        }
+    }
+}
+
+// MARK: - Previews
+
+struct DownloadView_Previews: PreviewProvider {
+    static var previews: some View {
+        DownloadView(
+            id: "1234567890",
+            name: "some-name.txt"
+        ) {
+            // Downloaded closure.
+        }
+    }
+}