Add Hotspot implementation

Model/Hotspot/Hotspot.swift

@@ -21,12 +21,33 @@ final class Hotspot: ObservableObject {
     @MainActor
     static let shared = Hotspot()
     
+    @ZimActor
+    private var hotspot: KiwixHotspot?
+    
     @Published private(set) var isStarted: Bool = false
     @Published var selection = MultiSelectedZimFilesViewModel()
     
-    @MainActor
-    func toggle() {
-        isStarted = !isStarted
+    @ZimActor
+    func toggle() async {
+        if let hotspot {
+            hotspot.__stop()
+            self.hotspot = nil
+            await MainActor.run { self.isStarted = false }
+            return
+        } else {
+            let zimFileIds: Set<UUID> = await MainActor.run(resultType: Set<UUID>.self, body: {
+                Set(selection.selectedZimFiles.map{ $0.fileID })
+            })
+            guard !zimFileIds.isEmpty else {
+                debugPrint("no zim files were set for Hotspot to start")
+                return
+            }
+            self.hotspot = KiwixHotspot(__zimFileIds: zimFileIds)
+            await MainActor.run {
+                isStarted = true
+                debugPrint("current IP: \(Self.wifiIPaddress())")
+            }
+        }
     }
     
     static func wifiIPaddress() -> String {

Model/Hotspot/KiwixHotspot.h

@@ -0,0 +1,26 @@
+// This file is part of Kiwix for iOS & macOS.
+//
+// Kiwix is free software; you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3 of the License, or
+// any later version.
+//
+// Kiwix is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Kiwix; If not, see https://www.gnu.org/licenses/.
+
+#import <Foundation/Foundation.h>
+#import "kiwix/library.h"
+
+@interface KiwixHotspot : NSObject
+
+- (nonnull KiwixHotspot *)initWithZimFileIds:(NSSet *_Nonnull) zimFileIDs NS_REFINED_FOR_SWIFT;
+//- (void)start;
+- (void) stop NS_REFINED_FOR_SWIFT;
+
+@end
+

Model/Hotspot/KiwixHotspot.mm

@@ -0,0 +1,80 @@
+// This file is part of Kiwix for iOS & macOS.
+//
+// Kiwix is free software; you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3 of the License, or
+// any later version.
+//
+// Kiwix is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Kiwix; If not, see https://www.gnu.org/licenses/.
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdocumentation"
+#pragma clang diagnostic pop
+
+#import <Foundation/Foundation.h>
+#import "KiwixHotspot.h"
+#import "zim/archive.h"
+#import "kiwix/library.h"
+#import "kiwix/book.h"
+#import "kiwix/server.h"
+#import "ZimFileService.h"
+
+
+@interface KiwixHotspot ()
+
+@property kiwix::LibraryPtr library;
+@property std::shared_ptr<kiwix::Server> server;
+//@property kiwix::Server server;
+
+@end
+
+@implementation KiwixHotspot
+
+- (KiwixHotspot *)initWithZimFileIds:(nonnull NSSet *)zimFileIDs {
+    self = [super init];
+    if (self) {
+        self.library = kiwix::Library::create();
+        if(self.library != nullptr) {
+            [self startFor:zimFileIDs];
+        } else {
+            NSLog(@"couldn't create kiwix::Library for Hotspot!");
+        }
+    }
+    return self;
+}
+
+-(void) startFor: (nonnull NSSet *) zimFileIDs {
+    if (self.server != nullptr) {
+        self.server = nil;
+    }
+    
+    for (NSUUID *zimFileID in zimFileIDs) {
+        try {
+            zim::Archive * _Nullable archive = [[ZimFileService sharedInstance] findArchiveBy:zimFileID];
+            if(archive != nullptr) {
+                kiwix::Book book = kiwix::Book();
+                book.update(*archive);
+                self.library->addBook(book);
+            }
+        } catch (std::exception &e) {
+            NSLog(@"couldn't add zimFile to Hotspot: %@ because: %s", zimFileID, e.what());
+        }
+    }
+    self.server = std::make_shared<kiwix::Server>(self.library);
+    self.server->setPort(8080);
+    self.server->start();
+}
+
+- (void)stop {
+    if(self.server != nullptr) {
+        self.server->stop();
+    }
+}
+
+@end

Model/ZimFileService/ZimFileService.h

@@ -15,6 +15,7 @@
 
 #import <Foundation/Foundation.h>
 #import "ZimFileMetaData.h"
+#import "zim/archive.h"
 
 @interface ZimFileService : NSObject
 
@@ -30,6 +31,7 @@
 - (NSUUID *_Nullable)open:(NSUUID *_Nonnull)zimFileID NS_REFINED_FOR_SWIFT;
 - (void)close:(NSUUID *_Nonnull)zimFileID NS_REFINED_FOR_SWIFT;
 - (NSArray *_Nonnull)getReaderIdentifiers NS_REFINED_FOR_SWIFT;
+- (zim::Archive *_Nullable) findArchiveBy: (NSUUID *_Nonnull) zimFileID;
 - (nonnull void *) getArchives;
 
 # pragma mark - Metadata

Support/Kiwix-Bridging-Header.h

@@ -7,6 +7,7 @@
 #import "ZimFileMetaData.h"
 #import "SearchOperation.h"
 #import "SearchResult.h"
+#import "KiwixHotspot.h"
 
 
 NS_INLINE NSException * _Nullable objCTryBlock(void(^_Nonnull tryBlock)(void)) {

Views/Hotspot/HotspotDetails.swift

@@ -41,7 +41,7 @@ struct HotspotDetails: View {
             .collapsible(false)
             Section(LocalString.zim_file_list_actions_text) {
                 Action(title: buttonTitle) {
-                    hotspot.toggle()
+                    await hotspot.toggle()
                 }
                 .buttonStyle(.borderedProminent)
             }
@@ -52,7 +52,7 @@ struct HotspotDetails: View {
     
     var body: some View {
         Action(title: buttonTitle, isDestructive: hotspot.isStarted) {
-            hotspot.toggle()
+            await hotspot.toggle()
         }
         .buttonStyle(.borderedProminent)
         .modifier(BadgeModifier(count: zimFiles.count))

Views/Hotspot/HotspotZimFilesSelection.swift

@@ -93,8 +93,8 @@ struct HotspotZimFilesSelection: View {
         #if os(iOS)
         .toolbar {
             ToolbarItem(placement: .topBarTrailing) {
-                Button {
-                    hotspot.toggle()
+                AsyncButton {
+                    await hotspot.toggle()
                 } label: {
                     let text = if hotspot.isStarted {
                         LocalString.hotspot_action_stop_server_title

project.yml

@@ -61,6 +61,7 @@ targetTemplates:
         com.apple.security.app-sandbox: true
         com.apple.security.files.user-selected.read-write: true
         com.apple.security.network.client: true
+        com.apple.security.network.server: true
         com.apple.security.print: true
     dependencies:
       - framework: CoreKiwix.xcframework