Implemented the DocumentPicker component for the Browse module.

Modules/Sources/Browse/UI/Components/DocumentPicker.swift

@@ -0,0 +1,91 @@
+//
+//  DocumentPicker.swift
+//  Browse
+//
+//  Created by Javier Cicchelli on 17/12/2022.
+//  Copyright © 2022 Röck+Cöde. All rights reserved.
+//
+
+import Foundation
+import SwiftUI
+import UIKit
+
+struct DocumentPicker: UIViewControllerRepresentable {
+    
+    // MARK: Type aliases
+    
+    typealias SelectedClosure = ([URL]) -> Void
+    typealias CancelledClosure = () -> Void
+
+    // MARK: Properties
+    
+    private let selected: SelectedClosure
+    private let cancelled: CancelledClosure?
+    
+    // MARK: Initialisers
+    
+    init(
+        selected: @escaping SelectedClosure,
+        cancelled: CancelledClosure? = nil
+    ) {
+        self.selected = selected
+        self.cancelled = cancelled
+    }
+
+    // MARK: Functions
+    
+    func makeUIViewController(context: Context) -> UIDocumentPickerViewController {
+        let controller = UIDocumentPickerViewController(
+            forOpeningContentTypes: [.item],
+            asCopy: true
+        )
+        
+        controller.allowsMultipleSelection = false
+        controller.shouldShowFileExtensions = false
+        controller.delegate = context.coordinator
+        
+        return controller
+    }
+    
+    func updateUIViewController(
+        _ uiViewController: UIDocumentPickerViewController,
+        context: Context
+    ) { }
+    
+    func makeCoordinator() -> Coordinator {
+        .init(self)
+    }
+}
+
+// MARK: - Coordinators
+
+extension DocumentPicker {
+    class Coordinator: NSObject, UIDocumentPickerDelegate {
+        
+        // MARK: Properties
+        
+        private var parent: DocumentPicker
+        
+        // MARK: Initialisers
+        
+        init(_ parent: DocumentPicker) {
+            self.parent = parent
+        }
+        
+        // MARK: UIDocumentPickerDelegate
+        
+        func documentPicker(
+            _ controller: UIDocumentPickerViewController,
+            didPickDocumentsAt urls: [URL]
+        ) {
+            parent.selected(urls)
+        }
+        
+        func documentPickerWasCancelled(_ controller: UIDocumentPickerViewController) {
+            controller.dismiss(animated: true) { [weak self] in
+                self?.parent.cancelled?()
+            }
+        }
+        
+    }
+}