add image size and comic title to metadata extraction

.gitignore

@@ -5,3 +5,4 @@ buildServer.json
 .swiftlint.yml
 /ImageViewer.xcodeproj/xcuserdata
 /ImageViewer.xcodeproj/project.xcworkspace/xcuserdata
+/ImageViewer/flatc

ExportOptions.plist

@@ -4,7 +4,7 @@
 <plist version="1.0">
 <dict>
     <key>method</key>
-    <string>development</string>
+    <string>debugging</string>
     <key>signingStyle</key>
     <string>automatic</string>
     <key>destination</key>

ImageViewer.xcodeproj/project.pbxproj

@@ -3,16 +3,20 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 56;
+	objectVersion = 60;
 	objects = {
 
 /* Begin PBXBuildFile section */
+		228A32B12F849062008A980A /* metadata_generated.swift in Sources */ = {isa = PBXBuildFile; fileRef = 228A32B02F849062008A980A /* metadata_generated.swift */; };
+		22B015A72F82A2DC0088F94F /* FlatBuffers in Frameworks */ = {isa = PBXBuildFile; productRef = 22B015A62F82A2DC0088F94F /* FlatBuffers */; };
+		22B015A92F82A2DC0088F94F /* FlexBuffers in Frameworks */ = {isa = PBXBuildFile; productRef = 22B015A82F82A2DC0088F94F /* FlexBuffers */; };
 		840F62692E7B65B700C8A64A /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 840F62682E7B65B700C8A64A /* AppDelegate.swift */; };
 		840F626D2E7B65B700C8A64A /* ViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 840F626C2E7B65B700C8A64A /* ViewController.swift */; };
 		840F62722E7B65B900C8A64A /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 840F62712E7B65B900C8A64A /* Assets.xcassets */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
+		228A32B02F849062008A980A /* metadata_generated.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = metadata_generated.swift; sourceTree = "<group>"; };
 		840F62652E7B65B700C8A64A /* ImageViewer.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = ImageViewer.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		840F62682E7B65B700C8A64A /* AppDelegate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
 		840F626C2E7B65B700C8A64A /* ViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ViewController.swift; sourceTree = "<group>"; };
@@ -25,6 +29,8 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				22B015A72F82A2DC0088F94F /* FlatBuffers in Frameworks */,
+				22B015A92F82A2DC0088F94F /* FlexBuffers in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -50,6 +56,7 @@
 		840F62672E7B65B700C8A64A /* ImageViewer */ = {
 			isa = PBXGroup;
 			children = (
+				228A32B02F849062008A980A /* metadata_generated.swift */,
 				840F62682E7B65B700C8A64A /* AppDelegate.swift */,
 				840F626C2E7B65B700C8A64A /* ViewController.swift */,
 				840F62712E7B65B900C8A64A /* Assets.xcassets */,
@@ -86,7 +93,7 @@
 			attributes = {
 				BuildIndependentTargetsInParallel = 1;
 				LastSwiftUpdateCheck = 1420;
-				LastUpgradeCheck = 1420;
+				LastUpgradeCheck = 1640;
 				TargetAttributes = {
 					840F62642E7B65B700C8A64A = {
 						CreatedOnToolsVersion = 14.2;
@@ -102,6 +109,9 @@
 				Base,
 			);
 			mainGroup = 840F625C2E7B65B700C8A64A;
+			packageReferences = (
+				22B015A52F82A2DC0088F94F /* XCLocalSwiftPackageReference "../flatbuffers" */,
+			);
 			productRefGroup = 840F62662E7B65B700C8A64A /* Products */;
 			projectDirPath = "";
 			projectRoot = "";
@@ -129,6 +139,7 @@
 			files = (
 				840F626D2E7B65B700C8A64A /* ViewController.swift in Sources */,
 				840F62692E7B65B700C8A64A /* AppDelegate.swift in Sources */,
+				228A32B12F849062008A980A /* metadata_generated.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -169,8 +180,10 @@
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				COPY_PHASE_STRIP = NO;
 				DEBUG_INFORMATION_FORMAT = dwarf;
+				DEVELOPMENT_TEAM = U5B4RH73LN;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				ENABLE_TESTABILITY = YES;
+				ENABLE_USER_SCRIPT_SANDBOXING = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu11;
 				GCC_DYNAMIC_NO_PIC = NO;
 				GCC_NO_COMMON_BLOCKS = YES;
@@ -185,7 +198,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 10.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
 				MTL_ENABLE_DEBUG_INFO = INCLUDE_SOURCE;
 				MTL_FAST_MATH = YES;
 				ONLY_ACTIVE_ARCH = YES;
@@ -230,8 +243,10 @@
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				COPY_PHASE_STRIP = NO;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
+				DEVELOPMENT_TEAM = U5B4RH73LN;
 				ENABLE_NS_ASSERTIONS = NO;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				ENABLE_USER_SCRIPT_SANDBOXING = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu11;
 				GCC_NO_COMMON_BLOCKS = YES;
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
@@ -240,7 +255,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 10.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				MTL_FAST_MATH = YES;
 				SDKROOT = iphoneos;
@@ -284,7 +299,6 @@
 				ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = AccentColor;
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
-				DEVELOPMENT_TEAM = U5B4RH73LN;
 				GENERATE_INFOPLIST_FILE = YES;
 				INFOPLIST_FILE = ImageViewer/Info.plist;
 				INFOPLIST_KEY_LSSupportsOpeningDocumentsInPlace = YES;
@@ -326,6 +340,24 @@
 			defaultConfigurationName = Release;
 		};
 /* End XCConfigurationList section */
+
+/* Begin XCLocalSwiftPackageReference section */
+		22B015A52F82A2DC0088F94F /* XCLocalSwiftPackageReference "../flatbuffers" */ = {
+			isa = XCLocalSwiftPackageReference;
+			relativePath = ../flatbuffers;
+		};
+/* End XCLocalSwiftPackageReference section */
+
+/* Begin XCSwiftPackageProductDependency section */
+		22B015A62F82A2DC0088F94F /* FlatBuffers */ = {
+			isa = XCSwiftPackageProductDependency;
+			productName = FlatBuffers;
+		};
+		22B015A82F82A2DC0088F94F /* FlexBuffers */ = {
+			isa = XCSwiftPackageProductDependency;
+			productName = FlexBuffers;
+		};
+/* End XCSwiftPackageProductDependency section */
 	};
 	rootObject = 840F625D2E7B65B700C8A64A /* Project object */;
 }

ImageViewer.xcodeproj/xcshareddata/xcschemes/ImageViewer.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1420"
+   LastUpgradeVersion = "1640"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

ImageViewer/ViewController.swift

@@ -4,6 +4,7 @@
 // TODO: Support reading with scrolling and landscape mode
 
 import Foundation
+import FlatBuffers
 import UIKit
 
 let preloadCount = 2
@@ -48,46 +49,9 @@ struct LocalState: Codable {
     var backgroundColor: String = "black"
 }
 
-struct Metadata: Codable {
-    var title: String
-    var original_language: String
-    var last_volume: MetaValue
-    var last_chapter: MetaValue
-    var chapter_count: Int
-    var publication_demographic: String
-    var status: String
-    var year: Int?
-    var content_rating: String
-    var state: String
-    var created_at: String
-    var updated_at: String
-    var volumes: [VolumeMetadata]
-}
-
-struct VolumeMetadata: Codable {
-    var volume: MetaValue
-    var name: String?
-    var chapters: [ChapterMetadata]
-}
-
-struct ChapterMetadata: Codable {
-    var chapter: MetaValue
-    var name: String?
-    var images: [ImageMetadata]
-}
-
-struct ImageMetadata: Codable {
-    var doublePage: Bool
-    var fileName: String
-    var firstPage: Int
-}
-
-struct MetaValue: Codable {
-    var main: Int
-    var bonus: Int?
-}
-
 class ViewController: UIViewController, UIGestureRecognizerDelegate {
+    let metadataFilename = "metadata.fb"
+
     var homeView = UIView()
     var readerView = UIView()
 
@@ -96,7 +60,6 @@ class ViewController: UIViewController, UIGestureRecognizerDelegate {
     var hasSetContentOffset = false
     var pageCount = 0
     var pagesAvailable = 0
-    var sizeList: [CGSize] = []
     var chapterAndPages: [(Int, Int)] = []
 
     var imageView = UIImageView()
@@ -220,32 +183,23 @@ class ViewController: UIViewController, UIGestureRecognizerDelegate {
             }.sorted { $0.path < $1.path }
 
             for dir in directories {
-                if !fileManager.fileExists(
-                    atPath: dir.appendingPathComponent(
-                        "metadata.json"
-                    ).path)
-                {
+                if !fileManager.fileExists(atPath: dir.appendingPathComponent(metadataFilename).path) {
                     getMetadataFromFileName(path: dir)
                 }
 
                 currentPath = dir
 
-                metadata = try JSONDecoder().decode(
-                    Metadata.self,
-                    from:
-                    Data(
-                        String(
-                            contentsOfFile: dir.appendingPathComponent(
-                                "metadata.json"
-                            )
-                            .path
-                        ).utf8)
-                )
+                let data = try! Data(contentsOf: dir.appendingPathComponent(metadataFilename))
+                var byteBuffer = ByteBuffer(data: data)
+                metadata = try! getCheckedRoot(byteBuffer: &byteBuffer)
                 metadataList[dir] = metadata
                 loadLocalState()
+
                 comics.append(
                     Comic(
-                        cover: UIImage(contentsOfFile: getImagePath(progress: ProgressIndices(v: progress.v, c: 0, i: 0)).path)!,
+                        cover: UIImage(contentsOfFile: 
+                            getImagePath(progress: ProgressIndices(v: progress.v, c: 0, i: 0)).path
+                        )!,
                         metadata: metadata,
                         path: dir
                     ))
@@ -290,39 +244,46 @@ class ViewController: UIViewController, UIGestureRecognizerDelegate {
         return r
     }
 
+    func imageSize(at url: URL) -> CGSize? {
+        guard let source = CGImageSourceCreateWithURL(url as CFURL, nil) else {
+            return nil
+        }
+
+        guard let properties = CGImageSourceCopyPropertiesAtIndex(source, 0, nil) as? [CFString: Any],
+              let width = properties[kCGImagePropertyPixelWidth] as? CGFloat,
+              let height = properties[kCGImagePropertyPixelHeight] as? CGFloat else {
+            return nil
+        }
+
+        return CGSize(width: width, height: height)
+    }
+
     func getMetadataFromFileName(path: URL) {
         // Beautiful, is it not?
         let pattern = "c([0-9]+(?:x[0-9]+)?) \\(v([0-9]+)\\) - p([0-9]+(?:-[0-9]+)?)"
+        let titlePattern = "^(.*) - c([0-9]+(?:x[0-9]+)?)"
 
-        var currentVolume: Int! = nil
-        var currentChapter: (Int, Int?)!
-
-        let outFileName = "metadata.json"
+        var currentVolume: UInt32! = nil
+        var currentChapter: (UInt32, UInt32?)!
 
         if fileManager.fileExists(
-            atPath: path.appendingPathComponent(outFileName).absoluteString)
+            atPath: path.appendingPathComponent(metadataFilename).absoluteString)
         {
             print("skipped metadata file creation")
             return
         }
 
-        var newMetadata = Metadata(
-            title: "",
-            original_language: "",
-            last_volume: MetaValue(main: 0, bonus: nil),
-            last_chapter: MetaValue(main: 0, bonus: nil),
-            chapter_count: 0,
-            publication_demographic: "",
-            status: "",
-            year: nil,
-            content_rating: "",
-            state: "",
-            created_at: "",
-            updated_at: "",
-            volumes: []
-        )
+        var builder = FlatBufferBuilder(initialSize: 1024)
+
+        var volumes: [Offset] = []
+        var currentChapters: [Offset] = []
+        var currentImages: [Offset] = []
+
+        var titleValue: String = ""
+
         do {
             let regex = try NSRegularExpression(pattern: pattern)
+            let titleRegex = try NSRegularExpression(pattern: titlePattern)
             let dir = path.appendingPathComponent("images")
 
             let fileURLs = try fileManager.contentsOfDirectory(
@@ -330,91 +291,122 @@ class ViewController: UIViewController, UIGestureRecognizerDelegate {
                 includingPropertiesForKeys: [.isRegularFileKey],
                 options: [.skipsHiddenFiles]
             )
-            let fileNames = fileURLs.map { $0.lastPathComponent }.sorted()
-            for fileName in fileNames {
-                let range = NSRange(fileName.startIndex..., in: fileName)
-                if let match = regex.firstMatch(in: fileName, range: range) {
-                    let chapterStr = (fileName as NSString).substring(with: match.range(at: 1))
+            let filenames = fileURLs.map { $0.lastPathComponent }.sorted()
+            for (i, filename) in filenames.enumerated() {
+                let range = NSRange(filename.startIndex..., in: filename)
+                if i == 0 {
+                    if let match = titleRegex.firstMatch(in: filename, range: range) {
+                        titleValue = (filename as NSString).substring(with: match.range(at: 1))
+                    } 
+                }
+                if let match = regex.firstMatch(in: filename, range: range) {
+                    let chapterStr = (filename as NSString).substring(with: match.range(at: 1))
                     let chapterParts = chapterStr.split(separator: "x", maxSplits: 1)
-                    let chapter = (
-                        Int(chapterParts[0])!, chapterParts.count > 1 ? Int(chapterParts[1])! : nil
+                    let chapter: (UInt32, UInt32?) = (
+                        UInt32(chapterParts[0])!, chapterParts.count > 1 ? UInt32(chapterParts[1])! : nil
                     )
 
-                    let volume = Int((fileName as NSString).substring(with: match.range(at: 2)))!
+                    let volume: UInt32 = UInt32((filename as NSString).substring(with: match.range(at: 2)))!
 
-                    let pageStr = (fileName as NSString).substring(with: match.range(at: 3))
+                    let pageStr = (filename as NSString).substring(with: match.range(at: 3))
                     let pageParts = pageStr.split(separator: "-", maxSplits: 1)
                     let (page, doublePage) = (
-                        Int(pageParts[0])!, pageParts.count > 1
+                        UInt32(pageParts[0])!, pageParts.count > 1
+                    )
+                    
+                    let size = imageSize(at: dir.appendingPathComponent(filename))!
+                    let m_filename = builder.create(string: filename)
+                    let imageMetadata = ImageMetadata.createImageMetadata(&builder, 
+                        doublePage: doublePage, 
+                        filenameOffset: m_filename, 
+                        firstPage: page, 
+                        size: Size(width: UInt32(size.width), height: UInt32(size.height))
                     )
 
                     if currentVolume != nil {
                         if volume != currentVolume {
-                            newMetadata.chapter_count += 1
                             assert(volume > currentVolume)
-                            newMetadata.volumes.append(
-                                VolumeMetadata(
-                                    volume: MetaValue(main: volume, bonus: nil), name: nil,
-                                    chapters: [
-                                        ChapterMetadata(
-                                            chapter: MetaValue(
-                                                main: chapter.0, bonus: chapter.1
-                                            ),
-                                            name: "",
-                                            images: [
-                                                ImageMetadata(
-                                                    doublePage: doublePage, fileName: fileName,
-                                                    firstPage: page
-                                                ),
-                                            ]
-                                        ),
-                                    ]
-                                ))
+
+                            let chapterName = builder.create(string: "")
+                            let imagesOffset = builder.createVector(ofOffsets: currentImages)
+                            let chapterMetadata = ChapterMetadata.createChapterMetadata(&builder, 
+                                chapter: MetaValue(
+                                    main: currentChapter.0, bonus: currentChapter.1 ?? 0
+                                ),
+                                nameOffset: chapterName,
+                                imagesVectorOffset: imagesOffset,
+                            )
+
+                            currentChapters.append(chapterMetadata)
+
+                            let volumeTitle = builder.create(string: "")
+                            let chaptersOffset = builder.createVector(ofOffsets: currentChapters)
+                            let volumeMetadata = VolumeMetadata.createVolumeMetadata(
+                                &builder,
+                                volume: MetaValue(main: currentVolume, bonus: 0), 
+                                titleOffset: volumeTitle, 
+                                chaptersVectorOffset: chaptersOffset
+                            )
+
+                            volumes.append(volumeMetadata)
+
+                            currentImages = [imageMetadata]
+                            currentChapters = []
                         } else if chapter != currentChapter {
-                            newMetadata.chapter_count += 1
                             if chapter.0 == currentChapter.0 {
                                 assert(chapter.1! == currentChapter.1 ?? 1)
                             } else {
                                 assert(chapter.0 == currentChapter.0 + 1)
                             }
-                            newMetadata.volumes[newMetadata.volumes.count - 1].chapters.append(
-                                ChapterMetadata(
-                                    chapter: MetaValue(main: chapter.0, bonus: chapter.1),
-                                    name: "",
-                                    images: [
-                                        ImageMetadata(
-                                            doublePage: doublePage, fileName: fileName,
-                                            firstPage: page
-                                        ),
-                                    ]
-                                ))
-                        } else {
-                            newMetadata.volumes[newMetadata.volumes.count - 1].chapters[
-                                newMetadata.volumes[newMetadata.volumes.count - 1].chapters.count - 1
-                            ].images.append(
-                                ImageMetadata(
-                                    doublePage: doublePage, fileName: fileName, firstPage: page
-                                )
+
+                            let chapterName = builder.create(string: "")
+                            let imagesOffset = builder.createVector(ofOffsets: currentImages)
+                            let chapterMetadata = ChapterMetadata.createChapterMetadata(&builder, 
+                                chapter: MetaValue(
+                                    main: currentChapter.0, bonus: currentChapter.1 ?? 0
+                                ),
+                                nameOffset: chapterName,
+                                imagesVectorOffset: imagesOffset,
                             )
+
+                            currentChapters.append(chapterMetadata)
+
+                            currentImages = [imageMetadata]
+
+                        } else {
+                            currentImages.append(imageMetadata)
                         }
                     } else {
-                        newMetadata.chapter_count += 1
-                        newMetadata.volumes.append(
-                            VolumeMetadata(
-                                volume: MetaValue(main: volume, bonus: nil), name: nil,
-                                chapters: [
-                                    ChapterMetadata(
-                                        chapter: MetaValue(main: chapter.0, bonus: chapter.1),
-                                        name: "",
-                                        images: [
-                                            ImageMetadata(
-                                                doublePage: doublePage, fileName: fileName,
-                                                firstPage: page
-                                            ),
-                                        ]
-                                    ),
-                                ]
-                            ))
+                        currentImages.append(imageMetadata)
+                    }
+                    if (i == filenames.count - 1) {
+                        currentImages.append(imageMetadata)
+
+                        let chapterName = builder.create(string: "")
+                        let imagesOffset = builder.createVector(ofOffsets: currentImages)
+                        let chapterMetadata = ChapterMetadata.createChapterMetadata(&builder, 
+                            chapter: MetaValue(
+                                main: chapter.0, bonus: chapter.1 ?? 0
+                            ),
+                            nameOffset: chapterName,
+                            imagesVectorOffset: imagesOffset,
+                        )
+
+                        currentChapters.append(chapterMetadata)
+
+                        let volumeTitle = builder.create(string: "")
+                        let chaptersOffset = builder.createVector(ofOffsets: currentChapters)
+                        let volumeMetadata = VolumeMetadata.createVolumeMetadata(
+                            &builder,
+                            volume: MetaValue(main: volume, bonus: 0), 
+                            titleOffset: volumeTitle, 
+                            chaptersVectorOffset: chaptersOffset
+                        )
+
+                        volumes.append(volumeMetadata)
+
+                        currentImages = []
+                        currentChapters = []
                     }
                     currentVolume = volume
                     currentChapter = chapter
@@ -424,19 +416,31 @@ class ViewController: UIViewController, UIGestureRecognizerDelegate {
             print("failed reading image file names")
         }
 
-        metadata = newMetadata
+        let title = builder.create(string: titleValue)
+        let originalLanguage = builder.create(string: "Japanese")
+        let countryOfOrigin = builder.create(string: "Japan")
+        let description = builder.create(string: "")
+        let tags = builder.createVector(ofOffsets: [])
+        let volumeOffsets = builder.createVector(ofOffsets: volumes)
+        let metadata = Metadata.createMetadata(
+            &builder,
+            titleOffset: title,
+            format: Format.manga,
+            originalLanguageOffset: originalLanguage,
+            countryOfOriginOffset: countryOfOrigin,
+            publicationDemographic: PublicationDemographic.shounen,
+            status: Status.finished,
+            contentRating: ContentRating.safe,
+            source: Source.original,
+            startReleaseDate: Date(year: 2000, month: 1, day: 1),
+            endReleaseDate: Date(year: 2000, month: 1, day: 1),
+            tagsVectorOffset: tags,
+            descriptionOffset: description,
+            volumesVectorOffset: volumeOffsets,
+        )
 
-        do {
-            let encoder = JSONEncoder()
-            encoder.outputFormatting = [.prettyPrinted]
-            encoder.keyEncodingStrategy = .useDefaultKeys
-            try encoder.encode(
-                newMetadata
-            ).write(
-                to: path.appendingPathComponent(outFileName))
-        } catch {
-            print("failed to save generated metadata")
-        }
+        builder.finish(offset: metadata)
+        try! builder.data.write(to: path.appendingPathComponent(metadataFilename))
     }
 
     func saveLocalState() {
@@ -480,10 +484,13 @@ class ViewController: UIViewController, UIGestureRecognizerDelegate {
 
     func loadLocalState() {
         do {
-            let json = try Data(
-                String(
-                    contentsOfFile: currentPath.appendingPathComponent("state.json").path
-                ).utf8)
+            let path = currentPath.appendingPathComponent("state.json").path
+            if !fileManager.fileExists(atPath: path) {
+                progress = ProgressIndices(v: 0, c: 0, i: 0)
+                mode = .leftToRight
+                return
+            }
+            let json = try Data(String(contentsOfFile: path).utf8)
             let local = try JSONDecoder().decode(LocalState.self, from: json)
             switch local.progress {
             case let .leftToRight(volumeIndex, chapterIndex, imageIndex):
@@ -1067,22 +1074,22 @@ class ViewController: UIViewController, UIGestureRecognizerDelegate {
             return
         }
         progress = newProgress
-        if let path = getImagePath(progress: progress) {
+        let path = getImagePath(progress: progress) //{
             imageLoader.loadImage(at: path, scaling: scaling, screenSize: UIScreen.main.bounds.size) { [weak self] image in
                 self?.imageView.image = image
                 self?.updateInfo()
             }
-        } else {
-            return
-        }
+        // } else {
+          //  return
+        //}
 
         for _ in 0 ... preloadCount {
             newProgress = getProgressIndicesFromTurn(turn: .next, progress: newProgress)
-            if let path = getImagePath(progress: newProgress) {
+            let path = getImagePath(progress: newProgress) // {
                 imageLoader.preloadImage(at: path, scaling: scaling, screenSize: UIScreen.main.bounds.size)
-            } else {
-                print("could not preload image")
-            }
+            // } else {
+              //  print("could not preload image")
+            //}
         }
 
         saveLocalState()
@@ -1090,8 +1097,8 @@ class ViewController: UIViewController, UIGestureRecognizerDelegate {
 
     func metaValueToString(m: MetaValue) -> String {
         var r = ""
-        if let bonus = m.bonus {
-            r = String(m.main) + "." + String(bonus)
+        if m.bonus != 0 {
+            r = String(m.main) + "." + String(m.bonus)
         } else {
             r = String(m.main)
         }
@@ -1101,22 +1108,22 @@ class ViewController: UIViewController, UIGestureRecognizerDelegate {
     func updateInfo() {
         if metadata == nil { return }
 
-        var text = "\(metadata.title)\n"
+        var text = "\(metadata.title ?? "")\n"
 
         if let chapterTitle = metadata.volumes[progress.v].chapters[progress.c].name {
             text +=
                 "\(chapterTitle)\n"
         }
-        let chapterValue = metadata.volumes[progress.v].chapters[progress.c].chapter
+        let chapterValue = metadata.volumes[progress.v].chapters[progress.c].chapter!
         let chapterString = metaValueToString(m: chapterValue)
 
-        let lastChapterValue = metadata.last_chapter
+        let lastChapterValue = metadata.volumes[metadata.volumes.count - 1].chapters[metadata.volumes[metadata.volumes.count - 1].chapters.count - 1].chapter!
         let lastChapterString = metaValueToString(m: lastChapterValue)
 
-        let volumeValue = metadata.volumes[progress.v].volume
+        let volumeValue = metadata.volumes[progress.v].volume!
         let volumeString = metaValueToString(m: volumeValue)
 
-        let lastVolumeValue = metadata.last_volume
+        let lastVolumeValue = metadata.volumes[metadata.volumes.count - 1].volume!
         let lastVolumeString = metaValueToString(m: lastVolumeValue)
 
         let lastChapterIndex = metadata.volumes[progress.v].chapters.count - 1
@@ -1153,10 +1160,9 @@ class ViewController: UIViewController, UIGestureRecognizerDelegate {
         info.text = text
     }
 
-    func getImagePath(progress: ProgressIndices) -> URL! {
+    func getImagePath(progress: ProgressIndices) -> URL {
         let (v, c, i) = (progress.v, progress.c, progress.i)
-        let modernPath = currentPath.appendingPathComponent("images").appendingPathComponent(
-            metadata.volumes[v].chapters[c].images[i].fileName)
+        let modernPath = currentPath!.appendingPathComponent("images").appendingPathComponent(metadata.volumes[v].chapters[c].images[i].filename)
         // print("trying to get path \(modernPath)")
         // if fileManager.fileExists(atPath: modernPath.path) {
         return modernPath
@@ -1199,19 +1205,10 @@ class ViewController: UIViewController, UIGestureRecognizerDelegate {
     }
 
     func getMetadata(path: URL) -> Metadata? {
-        do {
-            let json = try Data(
-                String(contentsOfFile: path.appendingPathComponent("metadata.json").path)
-                    .utf8)
-            let metadata = try JSONDecoder().decode(Metadata.self, from: json)
-            return metadata
-
-        } catch let decodingError as DecodingError {
-            print(decodingError.errorDescription!)
-        } catch {
-            print("Unexpected error: \(error)")
-        }
-        return nil
+        let data = try! Data(contentsOf: path.appendingPathComponent(metadataFilename))
+        var byteBuffer = ByteBuffer(data: data)
+        let metadata: Metadata = try! getCheckedRoot(byteBuffer: &byteBuffer)
+        return metadata
     }
 
     func setImages(path _: URL) {
@@ -1267,10 +1264,14 @@ class ViewController: UIViewController, UIGestureRecognizerDelegate {
 func getGlobalState() -> GlobalState {
     let fileManager = FileManager.default
     if let documentsURL = fileManager.urls(for: .documentDirectory, in: .userDomainMask).first {
+        let path = documentsURL.appendingPathComponent("state.json").path
+        if !fileManager.fileExists(atPath: path) {
+            return GlobalState(comicName: nil)
+        }
         do {
             let json = try Data(
                 String(
-                    contentsOfFile: documentsURL.appendingPathComponent("state.json").path
+                    contentsOfFile: path
                 ).utf8)
             return try JSONDecoder().decode(GlobalState.self, from: json)
         } catch {
@@ -1368,7 +1369,7 @@ extension ViewController: UICollectionViewDataSource, UICollectionViewDelegateFl
         if collectionView == comicCollectionView {
             let selectedComic = comics[indexPath.item]
 
-            readComic(name: selectedComic.metadata.title)
+            readComic(name: selectedComic.metadata.title!)
         }
     }
 }

ImageViewer/metadata.fbs

@@ -0,0 +1,65 @@
+enum Format:byte { Manga, Novel, OneShot }
+enum Status:byte { Finished, Releasing, Hiatus, NotYetReleased, Cancelled }
+enum PublicationDemographic:byte { Shounen, Shoujou, Seinen, Josei }
+enum Source:byte { Original, Manga, LightNovel, VisualNovel, VideoGame, Other, Novel, Doujinshi, Anime, WebNovel, LiveAction, Game, Comic, MultimediaProject, PictureBook }
+enum ContentRating:byte { Safe, Suggestive, Erotica, Pornographic }
+
+enum TagType:byte { Format, Genre, Theme, Content }
+
+table Tag {
+    type:TagType;
+    value:string;
+}
+
+struct MetaValue {
+    main:uint;
+    bonus:uint;
+}
+
+struct Date {
+    year:ushort;
+    month:ubyte;
+    day:ubyte;
+}
+
+struct Size {
+    width:uint;
+    height:uint;
+}
+
+table ImageMetadata {
+    double_page:bool;
+    filename:string (required);
+    first_page:uint;
+    size:Size;
+}
+
+table ChapterMetadata {
+    chapter:MetaValue;
+    name:string;
+    images:[ImageMetadata];
+}
+
+table VolumeMetadata {
+    volume:MetaValue;
+    title:string;
+    chapters:[ChapterMetadata];
+}
+
+table Metadata {
+    title:string (required);
+    format:Format;
+    original_language:string;
+    country_of_origin:string;
+    publication_demographic:PublicationDemographic;
+    status:Status;
+    content_rating:ContentRating;
+    source:Source;
+    start_release_date:Date;
+    end_release_date:Date;
+    tags:[Tag];
+    description:string;
+    volumes:[VolumeMetadata];
+}
+
+root_type Metadata;

ImageViewer/metadata_generated.swift

@@ -0,0 +1,532 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+// swiftlint:disable all
+// swiftformat:disable all
+
+#if canImport(Common)
+import Common
+#endif
+
+import FlatBuffers
+
+public enum Format: Int8, FlatbuffersVectorInitializable, Enum, Verifiable {
+  public typealias T = Int8
+  public static var byteSize: Int { return MemoryLayout<Int8>.size }
+  public var value: Int8 { return self.rawValue }
+  case manga = 0
+  case novel = 1
+  case oneshot = 2
+
+  public static var max: Format { return .oneshot }
+  public static var min: Format { return .manga }
+}
+
+
+public enum Status: Int8, FlatbuffersVectorInitializable, Enum, Verifiable {
+  public typealias T = Int8
+  public static var byteSize: Int { return MemoryLayout<Int8>.size }
+  public var value: Int8 { return self.rawValue }
+  case finished = 0
+  case releasing = 1
+  case hiatus = 2
+  case notyetreleased = 3
+  case cancelled = 4
+
+  public static var max: Status { return .cancelled }
+  public static var min: Status { return .finished }
+}
+
+
+public enum PublicationDemographic: Int8, FlatbuffersVectorInitializable, Enum, Verifiable {
+  public typealias T = Int8
+  public static var byteSize: Int { return MemoryLayout<Int8>.size }
+  public var value: Int8 { return self.rawValue }
+  case shounen = 0
+  case shoujou = 1
+  case seinen = 2
+  case josei = 3
+
+  public static var max: PublicationDemographic { return .josei }
+  public static var min: PublicationDemographic { return .shounen }
+}
+
+
+public enum Source: Int8, FlatbuffersVectorInitializable, Enum, Verifiable {
+  public typealias T = Int8
+  public static var byteSize: Int { return MemoryLayout<Int8>.size }
+  public var value: Int8 { return self.rawValue }
+  case original = 0
+  case manga = 1
+  case lightnovel = 2
+  case visualnovel = 3
+  case videogame = 4
+  case other = 5
+  case novel = 6
+  case doujinshi = 7
+  case anime = 8
+  case webnovel = 9
+  case liveaction = 10
+  case game = 11
+  case comic = 12
+  case multimediaproject = 13
+  case picturebook = 14
+
+  public static var max: Source { return .picturebook }
+  public static var min: Source { return .original }
+}
+
+
+public enum ContentRating: Int8, FlatbuffersVectorInitializable, Enum, Verifiable {
+  public typealias T = Int8
+  public static var byteSize: Int { return MemoryLayout<Int8>.size }
+  public var value: Int8 { return self.rawValue }
+  case safe = 0
+  case suggestive = 1
+  case erotica = 2
+  case pornographic = 3
+
+  public static var max: ContentRating { return .pornographic }
+  public static var min: ContentRating { return .safe }
+}
+
+
+public enum TagType: Int8, FlatbuffersVectorInitializable, Enum, Verifiable {
+  public typealias T = Int8
+  public static var byteSize: Int { return MemoryLayout<Int8>.size }
+  public var value: Int8 { return self.rawValue }
+  case format = 0
+  case genre = 1
+  case theme = 2
+  case content = 3
+
+  public static var max: TagType { return .content }
+  public static var min: TagType { return .format }
+}
+
+
+public struct MetaValue: NativeStruct, FlatbuffersVectorInitializable, Verifiable, FlatbuffersInitializable {
+
+  static func validateVersion() { FlatBuffersVersion_25_12_19() }
+
+  private var _main: UInt32
+  private var _bonus: UInt32
+
+  public init(_ bb: ByteBuffer, o: Int32) {
+    self = bb.read(def: Self.self, position: Int(o))
+  }
+
+  public init(main: UInt32, bonus: UInt32) {
+    _main = main
+    _bonus = bonus
+  }
+
+  public init() {
+    _main = 0
+    _bonus = 0
+  }
+
+  public var main: UInt32 { _main }
+  public var bonus: UInt32 { _bonus }
+
+  public static func verify<T>(_ verifier: inout Verifier, at position: Int, of type: T.Type) throws where T: Verifiable {
+    try verifier.inBuffer(position: position, of: MetaValue.self)
+  }
+}
+
+public struct MetaValue_Mutable: FlatBufferStruct, FlatbuffersVectorInitializable {
+
+  static func validateVersion() { FlatBuffersVersion_25_12_19() }
+  public var __buffer: ByteBuffer! { return _accessor.bb }
+  private var _accessor: Struct
+
+  public init(_ bb: ByteBuffer, o: Int32) { _accessor = Struct(bb: bb, position: o) }
+
+  public var main: UInt32 { return _accessor.readBuffer(of: UInt32.self, at: 0) }
+  public var bonus: UInt32 { return _accessor.readBuffer(of: UInt32.self, at: 4) }
+}
+
+public struct Date: NativeStruct, FlatbuffersVectorInitializable, Verifiable, FlatbuffersInitializable {
+
+  static func validateVersion() { FlatBuffersVersion_25_12_19() }
+
+  private var _year: UInt16
+  private var _month: UInt8
+  private var _day: UInt8
+
+  public init(_ bb: ByteBuffer, o: Int32) {
+    self = bb.read(def: Self.self, position: Int(o))
+  }
+
+  public init(year: UInt16, month: UInt8, day: UInt8) {
+    _year = year
+    _month = month
+    _day = day
+  }
+
+  public init() {
+    _year = 0
+    _month = 0
+    _day = 0
+  }
+
+  public var year: UInt16 { _year }
+  public var month: UInt8 { _month }
+  public var day: UInt8 { _day }
+
+  public static func verify<T>(_ verifier: inout Verifier, at position: Int, of type: T.Type) throws where T: Verifiable {
+    try verifier.inBuffer(position: position, of: Date.self)
+  }
+}
+
+public struct Date_Mutable: FlatBufferStruct, FlatbuffersVectorInitializable {
+
+  static func validateVersion() { FlatBuffersVersion_25_12_19() }
+  public var __buffer: ByteBuffer! { return _accessor.bb }
+  private var _accessor: Struct
+
+  public init(_ bb: ByteBuffer, o: Int32) { _accessor = Struct(bb: bb, position: o) }
+
+  public var year: UInt16 { return _accessor.readBuffer(of: UInt16.self, at: 0) }
+  public var month: UInt8 { return _accessor.readBuffer(of: UInt8.self, at: 2) }
+  public var day: UInt8 { return _accessor.readBuffer(of: UInt8.self, at: 3) }
+}
+
+public struct Size: NativeStruct, FlatbuffersVectorInitializable, Verifiable, FlatbuffersInitializable {
+
+  static func validateVersion() { FlatBuffersVersion_25_12_19() }
+
+  private var _width: UInt32
+  private var _height: UInt32
+
+  public init(_ bb: ByteBuffer, o: Int32) {
+    self = bb.read(def: Self.self, position: Int(o))
+  }
+
+  public init(width: UInt32, height: UInt32) {
+    _width = width
+    _height = height
+  }
+
+  public init() {
+    _width = 0
+    _height = 0
+  }
+
+  public var width: UInt32 { _width }
+  public var height: UInt32 { _height }
+
+  public static func verify<T>(_ verifier: inout Verifier, at position: Int, of type: T.Type) throws where T: Verifiable {
+    try verifier.inBuffer(position: position, of: Size.self)
+  }
+}
+
+public struct Size_Mutable: FlatBufferStruct, FlatbuffersVectorInitializable {
+
+  static func validateVersion() { FlatBuffersVersion_25_12_19() }
+  public var __buffer: ByteBuffer! { return _accessor.bb }
+  private var _accessor: Struct
+
+  public init(_ bb: ByteBuffer, o: Int32) { _accessor = Struct(bb: bb, position: o) }
+
+  public var width: UInt32 { return _accessor.readBuffer(of: UInt32.self, at: 0) }
+  public var height: UInt32 { return _accessor.readBuffer(of: UInt32.self, at: 4) }
+}
+
+public struct Tag: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable {
+
+  static func validateVersion() { FlatBuffersVersion_25_12_19() }
+  public var __buffer: ByteBuffer! { return _accessor.bb }
+  private var _accessor: Table
+
+  private init(_ t: Table) { _accessor = t }
+  public init(_ bb: ByteBuffer, o: Int32) { _accessor = Table(bb: bb, position: o) }
+
+  private struct VT {
+    static let type: VOffset = 4
+    static let value: VOffset = 6
+  }
+
+  public var type: TagType { let o = _accessor.offset(VT.type); return o == 0 ? .format : TagType(rawValue: _accessor.readBuffer(of: Int8.self, at: o)) ?? .format }
+  public var value: String? { let o = _accessor.offset(VT.value); return o == 0 ? nil : _accessor.string(at: o) }
+  public var valueSegmentArray: [UInt8]? { return _accessor.getVector(at: VT.value) }
+  public static func startTag(_ fbb: inout FlatBufferBuilder) -> UOffset { fbb.startTable(with: 2) }
+  public static func add(type: TagType, _ fbb: inout FlatBufferBuilder) { fbb.add(element: type.rawValue, def: 0, at: VT.type) }
+  public static func add(value: Offset, _ fbb: inout FlatBufferBuilder) { fbb.add(offset: value, at: VT.value) }
+  public static func endTag(_ fbb: inout FlatBufferBuilder, start: UOffset) -> Offset { let end = Offset(offset: fbb.endTable(at: start)); return end }
+  public static func createTag(
+    _ fbb: inout FlatBufferBuilder,
+    type: TagType = .format,
+    valueOffset value: Offset = Offset()
+  ) -> Offset {
+    let __start = Tag.startTag(&fbb)
+    Tag.add(type: type, &fbb)
+    Tag.add(value: value, &fbb)
+    return Tag.endTag(&fbb, start: __start)
+  }
+
+  public static func verify<T>(_ verifier: inout Verifier, at position: Int, of type: T.Type) throws where T: Verifiable {
+    var _v = try verifier.visitTable(at: position)
+    try _v.visit(field: VT.type, fieldName: "type", required: false, type: TagType.self)
+    try _v.visit(field: VT.value, fieldName: "value", required: false, type: ForwardOffset<String>.self)
+    _v.finish()
+  }
+}
+
+public struct ImageMetadata: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable {
+
+  static func validateVersion() { FlatBuffersVersion_25_12_19() }
+  public var __buffer: ByteBuffer! { return _accessor.bb }
+  private var _accessor: Table
+
+  private init(_ t: Table) { _accessor = t }
+  public init(_ bb: ByteBuffer, o: Int32) { _accessor = Table(bb: bb, position: o) }
+
+  private struct VT {
+    static let doublePage: VOffset = 4
+    static let filename: VOffset = 6
+    static let firstPage: VOffset = 8
+    static let size: VOffset = 10
+  }
+
+  public var doublePage: Bool { let o = _accessor.offset(VT.doublePage); return o == 0 ? false : _accessor.readBuffer(of: Bool.self, at: o) }
+  public var filename: String! { let o = _accessor.offset(VT.filename); return _accessor.string(at: o) }
+  public var filenameSegmentArray: [UInt8]! { return _accessor.getVector(at: VT.filename) }
+  public var firstPage: UInt32 { let o = _accessor.offset(VT.firstPage); return o == 0 ? 0 : _accessor.readBuffer(of: UInt32.self, at: o) }
+  public var size: Size? { let o = _accessor.offset(VT.size); return o == 0 ? nil : _accessor.readBuffer(of: Size.self, at: o) }
+  public var mutableSize: Size_Mutable? { let o = _accessor.offset(VT.size); return o == 0 ? nil : Size_Mutable(_accessor.bb, o: o + _accessor.position) }
+  public static func startImageMetadata(_ fbb: inout FlatBufferBuilder) -> UOffset { fbb.startTable(with: 4) }
+  public static func add(doublePage: Bool, _ fbb: inout FlatBufferBuilder) { fbb.add(element: doublePage, def: false,
+   at: VT.doublePage) }
+  public static func add(filename: Offset, _ fbb: inout FlatBufferBuilder) { fbb.add(offset: filename, at: VT.filename) }
+  public static func add(firstPage: UInt32, _ fbb: inout FlatBufferBuilder) { fbb.add(element: firstPage, def: 0, at: VT.firstPage) }
+  public static func add(size: Size?, _ fbb: inout FlatBufferBuilder) { guard let size = size else { return }; fbb.create(struct: size, position: VT.size) }
+  public static func endImageMetadata(_ fbb: inout FlatBufferBuilder, start: UOffset) -> Offset { let end = Offset(offset: fbb.endTable(at: start)); fbb.require(table: end, fields: [6]); return end }
+  public static func createImageMetadata(
+    _ fbb: inout FlatBufferBuilder,
+    doublePage: Bool = false,
+    filenameOffset filename: Offset,
+    firstPage: UInt32 = 0,
+    size: Size? = nil
+  ) -> Offset {
+    let __start = ImageMetadata.startImageMetadata(&fbb)
+    ImageMetadata.add(doublePage: doublePage, &fbb)
+    ImageMetadata.add(filename: filename, &fbb)
+    ImageMetadata.add(firstPage: firstPage, &fbb)
+    ImageMetadata.add(size: size, &fbb)
+    return ImageMetadata.endImageMetadata(&fbb, start: __start)
+  }
+
+  public static func verify<T>(_ verifier: inout Verifier, at position: Int, of type: T.Type) throws where T: Verifiable {
+    var _v = try verifier.visitTable(at: position)
+    try _v.visit(field: VT.doublePage, fieldName: "doublePage", required: false, type: Bool.self)
+    try _v.visit(field: VT.filename, fieldName: "filename", required: true, type: ForwardOffset<String>.self)
+    try _v.visit(field: VT.firstPage, fieldName: "firstPage", required: false, type: UInt32.self)
+    try _v.visit(field: VT.size, fieldName: "size", required: false, type: Size.self)
+    _v.finish()
+  }
+}
+
+public struct ChapterMetadata: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable {
+
+  static func validateVersion() { FlatBuffersVersion_25_12_19() }
+  public var __buffer: ByteBuffer! { return _accessor.bb }
+  private var _accessor: Table
+
+  private init(_ t: Table) { _accessor = t }
+  public init(_ bb: ByteBuffer, o: Int32) { _accessor = Table(bb: bb, position: o) }
+
+  private struct VT {
+    static let chapter: VOffset = 4
+    static let name: VOffset = 6
+    static let images: VOffset = 8
+  }
+
+  public var chapter: MetaValue? { let o = _accessor.offset(VT.chapter); return o == 0 ? nil : _accessor.readBuffer(of: MetaValue.self, at: o) }
+  public var mutableChapter: MetaValue_Mutable? { let o = _accessor.offset(VT.chapter); return o == 0 ? nil : MetaValue_Mutable(_accessor.bb, o: o + _accessor.position) }
+  public var name: String? { let o = _accessor.offset(VT.name); return o == 0 ? nil : _accessor.string(at: o) }
+  public var nameSegmentArray: [UInt8]? { return _accessor.getVector(at: VT.name) }
+  public var images: FlatbufferVector<ImageMetadata> { return _accessor.vector(at: VT.images, byteSize: 4) }
+  public static func startChapterMetadata(_ fbb: inout FlatBufferBuilder) -> UOffset { fbb.startTable(with: 3) }
+  public static func add(chapter: MetaValue?, _ fbb: inout FlatBufferBuilder) { guard let chapter = chapter else { return }; fbb.create(struct: chapter, position: VT.chapter) }
+  public static func add(name: Offset, _ fbb: inout FlatBufferBuilder) { fbb.add(offset: name, at: VT.name) }
+  public static func addVectorOf(images: Offset, _ fbb: inout FlatBufferBuilder) { fbb.add(offset: images, at: VT.images) }
+  public static func endChapterMetadata(_ fbb: inout FlatBufferBuilder, start: UOffset) -> Offset { let end = Offset(offset: fbb.endTable(at: start)); return end }
+  public static func createChapterMetadata(
+    _ fbb: inout FlatBufferBuilder,
+    chapter: MetaValue? = nil,
+    nameOffset name: Offset = Offset(),
+    imagesVectorOffset images: Offset = Offset()
+  ) -> Offset {
+    let __start = ChapterMetadata.startChapterMetadata(&fbb)
+    ChapterMetadata.add(chapter: chapter, &fbb)
+    ChapterMetadata.add(name: name, &fbb)
+    ChapterMetadata.addVectorOf(images: images, &fbb)
+    return ChapterMetadata.endChapterMetadata(&fbb, start: __start)
+  }
+
+  public static func verify<T>(_ verifier: inout Verifier, at position: Int, of type: T.Type) throws where T: Verifiable {
+    var _v = try verifier.visitTable(at: position)
+    try _v.visit(field: VT.chapter, fieldName: "chapter", required: false, type: MetaValue.self)
+    try _v.visit(field: VT.name, fieldName: "name", required: false, type: ForwardOffset<String>.self)
+    try _v.visit(field: VT.images, fieldName: "images", required: false, type: ForwardOffset<Vector<ForwardOffset<ImageMetadata>, ImageMetadata>>.self)
+    _v.finish()
+  }
+}
+
+public struct VolumeMetadata: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable {
+
+  static func validateVersion() { FlatBuffersVersion_25_12_19() }
+  public var __buffer: ByteBuffer! { return _accessor.bb }
+  private var _accessor: Table
+
+  private init(_ t: Table) { _accessor = t }
+  public init(_ bb: ByteBuffer, o: Int32) { _accessor = Table(bb: bb, position: o) }
+
+  private struct VT {
+    static let volume: VOffset = 4
+    static let title: VOffset = 6
+    static let chapters: VOffset = 8
+  }
+
+  public var volume: MetaValue? { let o = _accessor.offset(VT.volume); return o == 0 ? nil : _accessor.readBuffer(of: MetaValue.self, at: o) }
+  public var mutableVolume: MetaValue_Mutable? { let o = _accessor.offset(VT.volume); return o == 0 ? nil : MetaValue_Mutable(_accessor.bb, o: o + _accessor.position) }
+  public var title: String? { let o = _accessor.offset(VT.title); return o == 0 ? nil : _accessor.string(at: o) }
+  public var titleSegmentArray: [UInt8]? { return _accessor.getVector(at: VT.title) }
+  public var chapters: FlatbufferVector<ChapterMetadata> { return _accessor.vector(at: VT.chapters, byteSize: 4) }
+  public static func startVolumeMetadata(_ fbb: inout FlatBufferBuilder) -> UOffset { fbb.startTable(with: 3) }
+  public static func add(volume: MetaValue?, _ fbb: inout FlatBufferBuilder) { guard let volume = volume else { return }; fbb.create(struct: volume, position: VT.volume) }
+  public static func add(title: Offset, _ fbb: inout FlatBufferBuilder) { fbb.add(offset: title, at: VT.title) }
+  public static func addVectorOf(chapters: Offset, _ fbb: inout FlatBufferBuilder) { fbb.add(offset: chapters, at: VT.chapters) }
+  public static func endVolumeMetadata(_ fbb: inout FlatBufferBuilder, start: UOffset) -> Offset { let end = Offset(offset: fbb.endTable(at: start)); return end }
+  public static func createVolumeMetadata(
+    _ fbb: inout FlatBufferBuilder,
+    volume: MetaValue? = nil,
+    titleOffset title: Offset = Offset(),
+    chaptersVectorOffset chapters: Offset = Offset()
+  ) -> Offset {
+    let __start = VolumeMetadata.startVolumeMetadata(&fbb)
+    VolumeMetadata.add(volume: volume, &fbb)
+    VolumeMetadata.add(title: title, &fbb)
+    VolumeMetadata.addVectorOf(chapters: chapters, &fbb)
+    return VolumeMetadata.endVolumeMetadata(&fbb, start: __start)
+  }
+
+  public static func verify<T>(_ verifier: inout Verifier, at position: Int, of type: T.Type) throws where T: Verifiable {
+    var _v = try verifier.visitTable(at: position)
+    try _v.visit(field: VT.volume, fieldName: "volume", required: false, type: MetaValue.self)
+    try _v.visit(field: VT.title, fieldName: "title", required: false, type: ForwardOffset<String>.self)
+    try _v.visit(field: VT.chapters, fieldName: "chapters", required: false, type: ForwardOffset<Vector<ForwardOffset<ChapterMetadata>, ChapterMetadata>>.self)
+    _v.finish()
+  }
+}
+
+public struct Metadata: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable {
+
+  static func validateVersion() { FlatBuffersVersion_25_12_19() }
+  public var __buffer: ByteBuffer! { return _accessor.bb }
+  private var _accessor: Table
+
+  private init(_ t: Table) { _accessor = t }
+  public init(_ bb: ByteBuffer, o: Int32) { _accessor = Table(bb: bb, position: o) }
+
+  private struct VT {
+    static let title: VOffset = 4
+    static let format: VOffset = 6
+    static let originalLanguage: VOffset = 8
+    static let countryOfOrigin: VOffset = 10
+    static let publicationDemographic: VOffset = 12
+    static let status: VOffset = 14
+    static let contentRating: VOffset = 16
+    static let source: VOffset = 18
+    static let startReleaseDate: VOffset = 20
+    static let endReleaseDate: VOffset = 22
+    static let tags: VOffset = 24
+    static let description: VOffset = 26
+    static let volumes: VOffset = 28
+  }
+
+  public var title: String! { let o = _accessor.offset(VT.title); return _accessor.string(at: o) }
+  public var titleSegmentArray: [UInt8]! { return _accessor.getVector(at: VT.title) }
+  public var format: Format { let o = _accessor.offset(VT.format); return o == 0 ? .manga : Format(rawValue: _accessor.readBuffer(of: Int8.self, at: o)) ?? .manga }
+  public var originalLanguage: String? { let o = _accessor.offset(VT.originalLanguage); return o == 0 ? nil : _accessor.string(at: o) }
+  public var originalLanguageSegmentArray: [UInt8]? { return _accessor.getVector(at: VT.originalLanguage) }
+  public var countryOfOrigin: String? { let o = _accessor.offset(VT.countryOfOrigin); return o == 0 ? nil : _accessor.string(at: o) }
+  public var countryOfOriginSegmentArray: [UInt8]? { return _accessor.getVector(at: VT.countryOfOrigin) }
+  public var publicationDemographic: PublicationDemographic { let o = _accessor.offset(VT.publicationDemographic); return o == 0 ? .shounen : PublicationDemographic(rawValue: _accessor.readBuffer(of: Int8.self, at: o)) ?? .shounen }
+  public var status: Status { let o = _accessor.offset(VT.status); return o == 0 ? .finished : Status(rawValue: _accessor.readBuffer(of: Int8.self, at: o)) ?? .finished }
+  public var contentRating: ContentRating { let o = _accessor.offset(VT.contentRating); return o == 0 ? .safe : ContentRating(rawValue: _accessor.readBuffer(of: Int8.self, at: o)) ?? .safe }
+  public var source: Source { let o = _accessor.offset(VT.source); return o == 0 ? .original : Source(rawValue: _accessor.readBuffer(of: Int8.self, at: o)) ?? .original }
+  public var startReleaseDate: Date? { let o = _accessor.offset(VT.startReleaseDate); return o == 0 ? nil : _accessor.readBuffer(of: Date.self, at: o) }
+  public var mutableStartReleaseDate: Date_Mutable? { let o = _accessor.offset(VT.startReleaseDate); return o == 0 ? nil : Date_Mutable(_accessor.bb, o: o + _accessor.position) }
+  public var endReleaseDate: Date? { let o = _accessor.offset(VT.endReleaseDate); return o == 0 ? nil : _accessor.readBuffer(of: Date.self, at: o) }
+  public var mutableEndReleaseDate: Date_Mutable? { let o = _accessor.offset(VT.endReleaseDate); return o == 0 ? nil : Date_Mutable(_accessor.bb, o: o + _accessor.position) }
+  public var tags: FlatbufferVector<Tag> { return _accessor.vector(at: VT.tags, byteSize: 4) }
+  public var description: String? { let o = _accessor.offset(VT.description); return o == 0 ? nil : _accessor.string(at: o) }
+  public var descriptionSegmentArray: [UInt8]? { return _accessor.getVector(at: VT.description) }
+  public var volumes: FlatbufferVector<VolumeMetadata> { return _accessor.vector(at: VT.volumes, byteSize: 4) }
+  public static func startMetadata(_ fbb: inout FlatBufferBuilder) -> UOffset { fbb.startTable(with: 13) }
+  public static func add(title: Offset, _ fbb: inout FlatBufferBuilder) { fbb.add(offset: title, at: VT.title) }
+  public static func add(format: Format, _ fbb: inout FlatBufferBuilder) { fbb.add(element: format.rawValue, def: 0, at: VT.format) }
+  public static func add(originalLanguage: Offset, _ fbb: inout FlatBufferBuilder) { fbb.add(offset: originalLanguage, at: VT.originalLanguage) }
+  public static func add(countryOfOrigin: Offset, _ fbb: inout FlatBufferBuilder) { fbb.add(offset: countryOfOrigin, at: VT.countryOfOrigin) }
+  public static func add(publicationDemographic: PublicationDemographic, _ fbb: inout FlatBufferBuilder) { fbb.add(element: publicationDemographic.rawValue, def: 0, at: VT.publicationDemographic) }
+  public static func add(status: Status, _ fbb: inout FlatBufferBuilder) { fbb.add(element: status.rawValue, def: 0, at: VT.status) }
+  public static func add(contentRating: ContentRating, _ fbb: inout FlatBufferBuilder) { fbb.add(element: contentRating.rawValue, def: 0, at: VT.contentRating) }
+  public static func add(source: Source, _ fbb: inout FlatBufferBuilder) { fbb.add(element: source.rawValue, def: 0, at: VT.source) }
+  public static func add(startReleaseDate: Date?, _ fbb: inout FlatBufferBuilder) { guard let startReleaseDate = startReleaseDate else { return }; fbb.create(struct: startReleaseDate, position: VT.startReleaseDate) }
+  public static func add(endReleaseDate: Date?, _ fbb: inout FlatBufferBuilder) { guard let endReleaseDate = endReleaseDate else { return }; fbb.create(struct: endReleaseDate, position: VT.endReleaseDate) }
+  public static func addVectorOf(tags: Offset, _ fbb: inout FlatBufferBuilder) { fbb.add(offset: tags, at: VT.tags) }
+  public static func add(description: Offset, _ fbb: inout FlatBufferBuilder) { fbb.add(offset: description, at: VT.description) }
+  public static func addVectorOf(volumes: Offset, _ fbb: inout FlatBufferBuilder) { fbb.add(offset: volumes, at: VT.volumes) }
+  public static func endMetadata(_ fbb: inout FlatBufferBuilder, start: UOffset) -> Offset { let end = Offset(offset: fbb.endTable(at: start)); fbb.require(table: end, fields: [4]); return end }
+  public static func createMetadata(
+    _ fbb: inout FlatBufferBuilder,
+    titleOffset title: Offset,
+    format: Format = .manga,
+    originalLanguageOffset originalLanguage: Offset = Offset(),
+    countryOfOriginOffset countryOfOrigin: Offset = Offset(),
+    publicationDemographic: PublicationDemographic = .shounen,
+    status: Status = .finished,
+    contentRating: ContentRating = .safe,
+    source: Source = .original,
+    startReleaseDate: Date? = nil,
+    endReleaseDate: Date? = nil,
+    tagsVectorOffset tags: Offset = Offset(),
+    descriptionOffset description: Offset = Offset(),
+    volumesVectorOffset volumes: Offset = Offset()
+  ) -> Offset {
+    let __start = Metadata.startMetadata(&fbb)
+    Metadata.add(title: title, &fbb)
+    Metadata.add(format: format, &fbb)
+    Metadata.add(originalLanguage: originalLanguage, &fbb)
+    Metadata.add(countryOfOrigin: countryOfOrigin, &fbb)
+    Metadata.add(publicationDemographic: publicationDemographic, &fbb)
+    Metadata.add(status: status, &fbb)
+    Metadata.add(contentRating: contentRating, &fbb)
+    Metadata.add(source: source, &fbb)
+    Metadata.add(startReleaseDate: startReleaseDate, &fbb)
+    Metadata.add(endReleaseDate: endReleaseDate, &fbb)
+    Metadata.addVectorOf(tags: tags, &fbb)
+    Metadata.add(description: description, &fbb)
+    Metadata.addVectorOf(volumes: volumes, &fbb)
+    return Metadata.endMetadata(&fbb, start: __start)
+  }
+
+  public static func verify<T>(_ verifier: inout Verifier, at position: Int, of type: T.Type) throws where T: Verifiable {
+    var _v = try verifier.visitTable(at: position)
+    try _v.visit(field: VT.title, fieldName: "title", required: true, type: ForwardOffset<String>.self)
+    try _v.visit(field: VT.format, fieldName: "format", required: false, type: Format.self)
+    try _v.visit(field: VT.originalLanguage, fieldName: "originalLanguage", required: false, type: ForwardOffset<String>.self)
+    try _v.visit(field: VT.countryOfOrigin, fieldName: "countryOfOrigin", required: false, type: ForwardOffset<String>.self)
+    try _v.visit(field: VT.publicationDemographic, fieldName: "publicationDemographic", required: false, type: PublicationDemographic.self)
+    try _v.visit(field: VT.status, fieldName: "status", required: false, type: Status.self)
+    try _v.visit(field: VT.contentRating, fieldName: "contentRating", required: false, type: ContentRating.self)
+    try _v.visit(field: VT.source, fieldName: "source", required: false, type: Source.self)
+    try _v.visit(field: VT.startReleaseDate, fieldName: "startReleaseDate", required: false, type: Date.self)
+    try _v.visit(field: VT.endReleaseDate, fieldName: "endReleaseDate", required: false, type: Date.self)
+    try _v.visit(field: VT.tags, fieldName: "tags", required: false, type: ForwardOffset<Vector<ForwardOffset<Tag>, Tag>>.self)
+    try _v.visit(field: VT.description, fieldName: "description", required: false, type: ForwardOffset<String>.self)
+    try _v.visit(field: VT.volumes, fieldName: "volumes", required: false, type: ForwardOffset<Vector<ForwardOffset<VolumeMetadata>, VolumeMetadata>>.self)
+    _v.finish()
+  }
+}
+