Added a locale string

# Conflicts:
#	API/Services/TaskScheduler.cs

.gitignore

@@ -508,6 +508,7 @@ UI/Web/dist/
 /API/config/logs/
 /API/config/backups/
 /API/config/cache/
+/API/config/fonts/
 /API/config/temp/
 /API/config/themes/
 /API/config/stats/

API/API.csproj

@@ -191,6 +191,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <Folder Include="config\fonts\" />
     <Folder Include="config\themes" />
     <Content Include="EmailTemplates\**">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>

API/Controllers/FontController.cs

@@ -0,0 +1,138 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+using API.Constants;
+using API.Data;
+using API.DTOs.Font;
+using API.Entities.Enums.Font;
+using API.Extensions;
+using API.Services;
+using API.Services.Tasks;
+using API.Services.Tasks.Scanner.Parser;
+using AutoMapper;
+using Kavita.Common;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using MimeTypes;
+
+namespace API.Controllers;
+
+[Authorize]
+public class FontController : BaseApiController
+{
+    private readonly IUnitOfWork _unitOfWork;
+    private readonly IDirectoryService _directoryService;
+    private readonly IFontService _fontService;
+    private readonly IMapper _mapper;
+    private readonly ILocalizationService _localizationService;
+
+    private readonly Regex _fontFileExtensionRegex = new(Parser.FontFileExtensions, RegexOptions.IgnoreCase, Parser.RegexTimeout);
+
+    public FontController(IUnitOfWork unitOfWork, IDirectoryService directoryService,
+        IFontService fontService, IMapper mapper, ILocalizationService localizationService)
+    {
+        _unitOfWork = unitOfWork;
+        _directoryService = directoryService;
+        _fontService = fontService;
+        _mapper = mapper;
+        _localizationService = localizationService;
+    }
+
+    /// <summary>
+    /// List out the fonts
+    /// </summary>
+    /// <returns></returns>
+    [ResponseCache(CacheProfileName = ResponseCacheProfiles.TenMinute)]
+    [HttpGet("all")]
+    public async Task<ActionResult<IEnumerable<EpubFontDto>>> GetFonts()
+    {
+        return Ok(await _unitOfWork.EpubFontRepository.GetFontDtosAsync());
+    }
+
+    /// <summary>
+    /// Returns a font
+    /// </summary>
+    /// <param name="fontId"></param>
+    /// <param name="apiKey"></param>
+    /// <returns></returns>
+    [HttpGet]
+    [AllowAnonymous]
+    public async Task<IActionResult> GetFont(int fontId, string apiKey)
+    {
+        var userId = await _unitOfWork.UserRepository.GetUserIdByApiKeyAsync(apiKey);
+        if (userId == 0) return BadRequest();
+
+        var font = await _unitOfWork.EpubFontRepository.GetFontAsync(fontId);
+        if (font == null) return NotFound();
+
+        if (font.Provider == FontProvider.System) return BadRequest("System provided fonts are not loaded by API");
+
+
+        var contentType = MimeTypeMap.GetMimeType(Path.GetExtension(font.FileName));
+        var path = Path.Join(_directoryService.EpubFontDirectory, font.FileName);
+
+        return PhysicalFile(path, contentType, true);
+    }
+
+    /// <summary>
+    /// Removes a font from the system
+    /// </summary>
+    /// <param name="fontId"></param>
+    /// <param name="confirmed">If the font is in use by other users and an admin wants it deleted, they must confirm to force delete it</param>
+    /// <returns></returns>
+    [HttpDelete]
+    public async Task<IActionResult> DeleteFont(int fontId, bool confirmed = false)
+    {
+        // TODO: We need to check if this font is used by anyone else and if so, need to inform the user
+        // Need to check if this is a system font as well
+        var forceDelete = User.IsInRole(PolicyConstants.AdminRole) && confirmed;
+        await _fontService.Delete(fontId);
+        return Ok();
+    }
+
+    /// <summary>
+    /// Manual upload
+    /// </summary>
+    /// <param name="formFile"></param>
+    /// <returns></returns>
+    [HttpPost("upload")]
+    public async Task<ActionResult<EpubFontDto>> UploadFont(IFormFile formFile)
+    {
+        if (!_fontFileExtensionRegex.IsMatch(Path.GetExtension(formFile.FileName))) return BadRequest("Invalid file");
+
+        if (formFile.FileName.Contains("..")) return BadRequest("Invalid file");
+
+
+        var tempFile = await UploadToTemp(formFile);
+        var font = await _fontService.CreateFontFromFileAsync(tempFile);
+        return Ok(_mapper.Map<EpubFontDto>(font));
+    }
+
+    [HttpPost("upload-by-url")]
+    public async Task<ActionResult> UploadFontByUrl([FromQuery]string url)
+    {
+        // Validate url
+        try
+        {
+            await _fontService.CreateFontFromUrl(url);
+        }
+        catch (KavitaException ex)
+        {
+            return BadRequest(_localizationService.Translate(User.GetUserId(), ex.Message));
+        }
+
+        return Ok();
+    }
+
+    private async Task<string> UploadToTemp(IFormFile file)
+    {
+        var outputFile = Path.Join(_directoryService.TempDirectory, file.FileName);
+        await using var stream = System.IO.File.Create(outputFile);
+        await file.CopyToAsync(stream);
+        stream.Close();
+        return outputFile;
+    }
+}

API/Controllers/ThemeController.cs

@@ -40,7 +40,7 @@ public class ThemeController : BaseApiController
         _mapper = mapper;
     }
 
-    [ResponseCache(CacheProfileName = "10Minute")]
+    [ResponseCache(CacheProfileName = ResponseCacheProfiles.TenMinute)]
     [AllowAnonymous]
     [HttpGet]
     public async Task<ActionResult<IEnumerable<SiteThemeDto>>> GetThemes()

API/DTOs/Font/EpubFontDto.cs

@@ -0,0 +1,13 @@
+using System;
+using API.Entities.Enums.Font;
+
+namespace API.DTOs.Font;
+
+public class EpubFontDto
+{
+    public int Id { get; set; }
+    public string Name { get; set; }
+    public FontProvider Provider { get; set; }
+    public string FileName { get; set; }
+
+}

API/Data/DataContext.cs

@@ -66,6 +66,7 @@ public sealed class DataContext : IdentityDbContext<AppUser, AppRole, int,
     public DbSet<ManualMigrationHistory> ManualMigrationHistory { get; set; } = null!;
     public DbSet<SeriesBlacklist> SeriesBlacklist { get; set; } = null!;
     public DbSet<AppUserCollection> AppUserCollection { get; set; } = null!;
+    public DbSet<EpubFont> EpubFont { get; set; } = null!;
 
 
     protected override void OnModelCreating(ModelBuilder builder)

API/Data/Migrations/20240621211843_EpubFontInitial.cs

@@ -0,0 +1,42 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace API.Data.Migrations
+{
+    /// <inheritdoc />
+    public partial class EpubFontInitial : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "EpubFont",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    Name = table.Column<string>(type: "TEXT", nullable: true),
+                    NormalizedName = table.Column<string>(type: "TEXT", nullable: true),
+                    FileName = table.Column<string>(type: "TEXT", nullable: true),
+                    Provider = table.Column<int>(type: "INTEGER", nullable: false),
+                    Created = table.Column<DateTime>(type: "TEXT", nullable: false),
+                    CreatedUtc = table.Column<DateTime>(type: "TEXT", nullable: false),
+                    LastModified = table.Column<DateTime>(type: "TEXT", nullable: false),
+                    LastModifiedUtc = table.Column<DateTime>(type: "TEXT", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_EpubFont", x => x.Id);
+                });
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "EpubFont");
+        }
+    }
+}

API/Data/Migrations/DataContextModelSnapshot.cs

@@ -15,7 +15,7 @@ namespace API.Data.Migrations
         protected override void BuildModel(ModelBuilder modelBuilder)
         {
 #pragma warning disable 612, 618
-            modelBuilder.HasAnnotation("ProductVersion", "8.0.4");
+            modelBuilder.HasAnnotation("ProductVersion", "8.0.6");
 
             modelBuilder.Entity("API.Entities.AppRole", b =>
                 {
@@ -907,6 +907,41 @@ namespace API.Data.Migrations
                     b.ToTable("Device");
                 });
 
+            modelBuilder.Entity("API.Entities.EpubFont", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTime>("Created")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("CreatedUtc")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("FileName")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("LastModified")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("LastModifiedUtc")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("NormalizedName")
+                        .HasColumnType("TEXT");
+
+                    b.Property<int>("Provider")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("EpubFont");
+                });
+
             modelBuilder.Entity("API.Entities.FolderPath", b =>
                 {
                     b.Property<int>("Id")

API/Data/Repositories/EpubFontRepository.cs

@@ -0,0 +1,101 @@
+#nullable enable
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using API.DTOs.Font;
+using API.Entities;
+using API.Extensions;
+using AutoMapper;
+using AutoMapper.QueryableExtensions;
+using Microsoft.EntityFrameworkCore;
+
+namespace API.Data.Repositories;
+
+public interface IEpubFontRepository
+{
+    void Add(EpubFont font);
+    void Remove(EpubFont font);
+    void Update(EpubFont font);
+    Task<IEnumerable<EpubFontDto>> GetFontDtosAsync();
+    Task<EpubFontDto?> GetFontDtoAsync(int fontId);
+    Task<EpubFontDto?> GetFontDtoByNameAsync(string name);
+    Task<IEnumerable<EpubFont>> GetFontsAsync();
+    Task<EpubFont?> GetFontAsync(int fontId);
+    Task<bool> IsFontInUseAsync(int fontId);
+}
+
+public class EpubFontRepository: IEpubFontRepository
+{
+    private readonly DataContext _context;
+    private readonly IMapper _mapper;
+
+    public EpubFontRepository(DataContext context, IMapper mapper)
+    {
+        _context = context;
+        _mapper = mapper;
+    }
+
+    public void Add(EpubFont font)
+    {
+        _context.Add(font);
+    }
+
+    public void Remove(EpubFont font)
+    {
+        _context.Remove(font);
+    }
+
+    public void Update(EpubFont font)
+    {
+        _context.Entry(font).State = EntityState.Modified;
+    }
+
+    public async Task<IEnumerable<EpubFontDto>> GetFontDtosAsync()
+    {
+        return await _context.EpubFont
+            .OrderBy(s => s.Name == "Default" ? -1 : 0)
+            .ThenBy(s => s)
+            .ProjectTo<EpubFontDto>(_mapper.ConfigurationProvider)
+            .ToListAsync();
+    }
+
+    public async Task<EpubFontDto?> GetFontDtoAsync(int fontId)
+    {
+        return await _context.EpubFont
+            .Where(f => f.Id == fontId)
+            .ProjectTo<EpubFontDto>(_mapper.ConfigurationProvider)
+            .FirstOrDefaultAsync();
+    }
+
+    public async Task<EpubFontDto?> GetFontDtoByNameAsync(string name)
+    {
+        return await _context.EpubFont
+            .Where(f => f.NormalizedName.Equals(name.ToNormalized()))
+            .ProjectTo<EpubFontDto>(_mapper.ConfigurationProvider)
+            .FirstOrDefaultAsync();
+    }
+
+    public async Task<IEnumerable<EpubFont>> GetFontsAsync()
+    {
+        return await _context.EpubFont
+            .ToListAsync();
+    }
+
+    public async Task<EpubFont?> GetFontAsync(int fontId)
+    {
+        return await _context.EpubFont
+            .Where(f => f.Id == fontId)
+            .FirstOrDefaultAsync();
+    }
+
+    public async Task<bool> IsFontInUseAsync(int fontId)
+    {
+        return await _context.AppUserPreferences
+            .Join(_context.EpubFont,
+                preference => preference.BookReaderFontFamily,
+                font => font.Name,
+                (preference, font) => new { preference, font })
+            .AnyAsync(joined => joined.font.Id == fontId);
+    }
+
+}

API/Data/Repositories/UserRepository.cs

@@ -76,6 +76,7 @@ public interface IUserRepository
     Task<IList<AppUserBookmark>> GetAllBookmarksByIds(IList<int> bookmarkIds);
     Task<AppUser?> GetUserByEmailAsync(string email, AppUserIncludes includes = AppUserIncludes.None);
     Task<IEnumerable<AppUserPreferences>> GetAllPreferencesByThemeAsync(int themeId);
+    Task<IEnumerable<AppUserPreferences>> GetAllPreferencesByFontAsync(string fontName);
     Task<bool> HasAccessToLibrary(int libraryId, int userId);
     Task<bool> HasAccessToSeries(int userId, int seriesId);
     Task<IEnumerable<AppUser>> GetAllUsersAsync(AppUserIncludes includeFlags = AppUserIncludes.None);
@@ -260,6 +261,14 @@ public class UserRepository : IUserRepository
             .ToListAsync();
     }
 
+    public async Task<IEnumerable<AppUserPreferences>> GetAllPreferencesByFontAsync(string fontName)
+    {
+        return await _context.AppUserPreferences
+            .Where(p => p.BookReaderFontFamily == fontName)
+            .AsSplitQuery()
+            .ToListAsync();
+    }
+
     public async Task<bool> HasAccessToLibrary(int libraryId, int userId)
     {
         return await _context.Library

API/Data/Seed.cs

@@ -9,9 +9,11 @@ using API.Constants;
 using API.Data.Repositories;
 using API.Entities;
 using API.Entities.Enums;
+using API.Entities.Enums.Font;
 using API.Entities.Enums.Theme;
 using API.Extensions;
 using API.Services;
+using API.Services.Tasks.Scanner.Parser;
 using Kavita.Common;
 using Kavita.Common.EnvironmentInfo;
 using Microsoft.AspNetCore.Identity;
@@ -26,6 +28,97 @@ public static class Seed
     /// </summary>
     public static ImmutableArray<ServerSetting> DefaultSettings;
 
+    public static readonly ImmutableArray<EpubFont> DefaultFonts =
+    [
+        ..new List<EpubFont>
+        {
+            new ()
+            {
+                Name = "Default",
+                NormalizedName = Parser.Normalize("Default"),
+                Provider = FontProvider.System,
+                FileName = string.Empty,
+            },
+            new ()
+            {
+                Name = "Merriweather",
+                NormalizedName = Parser.Normalize("Merriweather"),
+                Provider = FontProvider.System,
+                FileName = "Merriweather-Regular.woff2",
+            },
+            new ()
+            {
+                Name = "EB Garamond",
+                NormalizedName = Parser.Normalize("EB Garamond"),
+                Provider = FontProvider.System,
+                FileName = "EBGaramond-VariableFont_wght.woff2",
+            },
+            new ()
+            {
+                Name = "Fira Sans",
+                NormalizedName = Parser.Normalize("Fira Sans"),
+                Provider = FontProvider.System,
+                FileName = "FiraSans-Regular.woff2",
+            },
+            new ()
+            {
+                Name = "Lato",
+                NormalizedName = Parser.Normalize("Lato"),
+                Provider = FontProvider.System,
+                FileName = "Lato-Regular.woff2",
+            },
+            new ()
+            {
+                Name = "Libre Baskerville",
+                NormalizedName = Parser.Normalize("Libre Baskerville"),
+                Provider = FontProvider.System,
+                FileName = "LibreBaskerville-Regular.woff2",
+            },
+            new ()
+            {
+                Name = "Libre Caslon",
+                NormalizedName = Parser.Normalize("Libre Caslon"),
+                Provider = FontProvider.System,
+                FileName = "LibreCaslonText-Regular.woff2",
+            },
+            new ()
+            {
+                Name = "Nanum Gothic",
+                NormalizedName = Parser.Normalize("Nanum Gothic"),
+                Provider = FontProvider.System,
+                FileName = "NanumGothic-Regular.woff2",
+            },
+            new ()
+            {
+                Name = "Open Dyslexic 2",
+                NormalizedName = Parser.Normalize("Open Dyslexic 2"),
+                Provider = FontProvider.System,
+                FileName = "OpenDyslexic-Regular.woff2",
+            },
+            new ()
+            {
+                Name = "Oswald",
+                NormalizedName = Parser.Normalize("Oswald"),
+                Provider = FontProvider.System,
+                FileName = "Oswald-VariableFont_wght.woff2",
+            },
+            new ()
+            {
+                Name = "RocknRoll One",
+                NormalizedName = Parser.Normalize("RocknRoll One"),
+                Provider = FontProvider.System,
+                FileName = "RocknRollOne-Regular.woff2",
+            },
+            new ()
+            {
+                Name = "Spartan",
+                NormalizedName = Parser.Normalize("Spartan"),
+                Provider = FontProvider.System,
+                FileName = "Spartan-VariableFont_wght.woff2",
+            },
+        }
+    ];
+
     public static readonly ImmutableArray<SiteTheme> DefaultThemes = [
         ..new List<SiteTheme>
         {
@@ -143,7 +236,7 @@ public static class Seed
 
         foreach (var theme in DefaultThemes)
         {
-            var existing = context.SiteTheme.FirstOrDefault(s => s.Name.Equals(theme.Name));
+            var existing = await context.SiteTheme.FirstOrDefaultAsync(s => s.Name.Equals(theme.Name));
             if (existing == null)
             {
                 await context.SiteTheme.AddAsync(theme);
@@ -153,6 +246,22 @@ public static class Seed
         await context.SaveChangesAsync();
     }
 
+    public static async Task SeedFonts(DataContext context)
+    {
+        await context.Database.EnsureCreatedAsync();
+
+        foreach (var font in DefaultFonts)
+        {
+            var existing = await context.EpubFont.FirstOrDefaultAsync(f => f.Name.Equals(font.Name));
+            if (existing == null)
+            {
+                await context.EpubFont.AddAsync(font);
+            }
+        }
+
+        await context.SaveChangesAsync();
+    }
+
     public static async Task SeedDefaultStreams(IUnitOfWork unitOfWork)
     {
         var allUsers = await unitOfWork.UserRepository.GetAllUsersAsync(AppUserIncludes.DashboardStreams);
@@ -259,7 +368,7 @@ public static class Seed
 
         foreach (var defaultSetting in DefaultSettings)
         {
-            var existing = context.ServerSetting.FirstOrDefault(s => s.Key == defaultSetting.Key);
+            var existing = await context.ServerSetting.FirstOrDefaultAsync(s => s.Key == defaultSetting.Key);
             if (existing == null)
             {
                 await context.ServerSetting.AddAsync(defaultSetting);
@@ -269,15 +378,15 @@ public static class Seed
         await context.SaveChangesAsync();
 
         // Port, IpAddresses and LoggingLevel are managed in appSettings.json. Update the DB values to match
-        context.ServerSetting.First(s => s.Key == ServerSettingKey.Port).Value =
+        (await context.ServerSetting.FirstAsync(s => s.Key == ServerSettingKey.Port)).Value =
             Configuration.Port + string.Empty;
-        context.ServerSetting.First(s => s.Key == ServerSettingKey.IpAddresses).Value =
+        (await context.ServerSetting.FirstAsync(s => s.Key == ServerSettingKey.IpAddresses)).Value =
             Configuration.IpAddresses;
-        context.ServerSetting.First(s => s.Key == ServerSettingKey.CacheDirectory).Value =
+        (await context.ServerSetting.FirstAsync(s => s.Key == ServerSettingKey.CacheDirectory)).Value =
             directoryService.CacheDirectory + string.Empty;
-        context.ServerSetting.First(s => s.Key == ServerSettingKey.BackupDirectory).Value =
+        (await context.ServerSetting.FirstAsync(s => s.Key == ServerSettingKey.BackupDirectory)).Value =
             DirectoryService.BackupDirectory + string.Empty;
-        context.ServerSetting.First(s => s.Key == ServerSettingKey.CacheSize).Value =
+        (await context.ServerSetting.FirstAsync(s => s.Key == ServerSettingKey.CacheSize)).Value =
             Configuration.CacheSize + string.Empty;
         await context.SaveChangesAsync();
 

API/Data/UnitOfWork.cs

@@ -31,6 +31,7 @@ public interface IUnitOfWork
     IAppUserSmartFilterRepository AppUserSmartFilterRepository { get; }
     IAppUserExternalSourceRepository AppUserExternalSourceRepository { get; }
     IExternalSeriesMetadataRepository ExternalSeriesMetadataRepository { get; }
+    IEpubFontRepository EpubFontRepository { get; }
     bool Commit();
     Task<bool> CommitAsync();
     bool HasChanges();
@@ -74,6 +75,7 @@ public class UnitOfWork : IUnitOfWork
     public IAppUserSmartFilterRepository AppUserSmartFilterRepository => new AppUserSmartFilterRepository(_context, _mapper);
     public IAppUserExternalSourceRepository AppUserExternalSourceRepository => new AppUserExternalSourceRepository(_context, _mapper);
     public IExternalSeriesMetadataRepository ExternalSeriesMetadataRepository => new ExternalSeriesMetadataRepository(_context, _mapper);
+    public IEpubFontRepository EpubFontRepository => new EpubFontRepository(_context, _mapper);
 
     /// <summary>
     /// Commits changes to the DB. Completes the open transaction.

API/Entities/Enums/Font/FontProvider.cs

@@ -0,0 +1,13 @@
+namespace API.Entities.Enums.Font;
+
+public enum FontProvider
+{
+    /// <summary>
+    /// Font is provider by System, always avaible
+    /// </summary>
+    System = 1,
+    /// <summary>
+    /// Font provider by the User
+    /// </summary>
+    User = 2,
+}

API/Entities/EpubFont.cs

@@ -0,0 +1,37 @@
+using System;
+using API.Entities.Enums.Font;
+using API.Entities.Interfaces;
+using API.Services;
+
+namespace API.Entities;
+
+/// <summary>
+/// Represents a user provider font to be used in the epub reader
+/// </summary>
+public class EpubFont: IEntityDate
+{
+    public int Id { get; set; }
+
+    /// <summary>
+    /// Name of the font
+    /// </summary>
+    public required string Name { get; set; }
+    /// <summary>
+    /// Normalized name for lookups
+    /// </summary>
+    public required string NormalizedName { get; set; }
+    /// <summary>
+    /// Filename of the font, stored under <see cref="DirectoryService.EpubFontDirectory"/>
+    /// </summary>
+    /// <remarks>System provided fonts use an alternative location as they are packaged with the app</remarks>
+    public required string FileName { get; set; }
+    /// <summary>
+    /// Where the font came from
+    /// </summary>
+    public FontProvider Provider { get; set; }
+
+    public DateTime Created { get; set; }
+    public DateTime CreatedUtc { get; set; }
+    public DateTime LastModified { get; set; }
+    public DateTime LastModifiedUtc { get; set; }
+}

API/Extensions/ApplicationServiceExtensions.cs

@@ -53,6 +53,7 @@ public static class ApplicationServiceExtensions
         services.AddScoped<IMediaConversionService, MediaConversionService>();
         services.AddScoped<IRecommendationService, RecommendationService>();
         services.AddScoped<IStreamService, StreamService>();
+        services.AddScoped<IFontService, FontService>();
 
         services.AddScoped<IScannerService, ScannerService>();
         services.AddScoped<IMetadataService, MetadataService>();

API/Helpers/AutoMapperProfiles.cs

@@ -10,6 +10,7 @@ using API.DTOs.Dashboard;
 using API.DTOs.Device;
 using API.DTOs.Filtering;
 using API.DTOs.Filtering.v2;
+using API.DTOs.Font;
 using API.DTOs.MediaErrors;
 using API.DTOs.Metadata;
 using API.DTOs.Progress;
@@ -262,6 +263,8 @@ public class AutoMapperProfiles : Profile
                 opt =>
                     opt.MapFrom(src => src.BookReaderLayoutMode));
 
+        CreateMap<EpubFont, EpubFontDto>();
+
 
         CreateMap<AppUserBookmark, BookmarkDto>();
 

API/I18N/en.json

@@ -218,6 +218,9 @@
     "scan-libraries": "Scan Libraries",
     "kavita+-data-refresh": "Kavita+ Data Refresh",
     "backup": "Backup",
-    "update-yearly-stats": "Update Yearly Stats"
+    "update-yearly-stats": "Update Yearly Stats",
+
+
+    "font-url-not-allowed": "Uploading a Font by url is only allowed from Google Fonts"
 
 }

API/Program.cs

@@ -126,6 +126,7 @@ public class Program
                 await Seed.SeedRoles(services.GetRequiredService<RoleManager<AppRole>>());
                 await Seed.SeedSettings(context, directoryService);
                 await Seed.SeedThemes(context);
+                await Seed.SeedFonts(context);
                 await Seed.SeedDefaultStreams(unitOfWork);
                 await Seed.SeedDefaultSideNavStreams(unitOfWork);
                 await Seed.SeedUserApiKeys(context);

API/Services/DirectoryService.cs

@@ -33,6 +33,7 @@ public interface IDirectoryService
     /// Original BookmarkDirectory. Only used for resetting directory. Use <see cref="ServerSettingKey.BackupDirectory"/> for actual path.
     /// </summary>
     string BookmarkDirectory { get; }
+    string EpubFontDirectory { get; }
     /// <summary>
     /// Lists out top-level folders for a given directory. Filters out System and Hidden folders.
     /// </summary>
@@ -88,6 +89,8 @@ public class DirectoryService : IDirectoryService
     public string LocalizationDirectory { get; }
     public string CustomizedTemplateDirectory { get; }
     public string TemplateDirectory { get; }
+    public string EpubFontDirectory { get; }
+
     private readonly ILogger<DirectoryService> _logger;
     private const RegexOptions MatchOptions = RegexOptions.Compiled | RegexOptions.IgnoreCase;
 
@@ -125,6 +128,8 @@ public class DirectoryService : IDirectoryService
         ExistOrCreate(CustomizedTemplateDirectory);
         TemplateDirectory = FileSystem.Path.Join(FileSystem.Directory.GetCurrentDirectory(), "EmailTemplates");
         ExistOrCreate(TemplateDirectory);
+        EpubFontDirectory = FileSystem.Path.Join(FileSystem.Directory.GetCurrentDirectory(), "config", "fonts");
+        ExistOrCreate(EpubFontDirectory);
     }
 
     /// <summary>

API/Services/Tasks/FontService.cs

@@ -0,0 +1,133 @@
+using System;
+using System.IO;
+using System.Linq;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+using API.Data;
+using API.Entities;
+using API.Entities.Enums.Font;
+using API.Services.Tasks.Scanner.Parser;
+using API.SignalR;
+using Kavita.Common;
+using Microsoft.AspNetCore.SignalR;
+using Microsoft.Extensions.Logging;
+
+namespace API.Services.Tasks;
+
+public interface IFontService
+{
+    Task<EpubFont> CreateFontFromFileAsync(string path);
+    Task Delete(int fontId);
+    Task CreateFontFromUrl(string url);
+}
+
+public class FontService: IFontService
+{
+
+    public static readonly string DefaultFont = "default";
+
+    private readonly IDirectoryService _directoryService;
+    private readonly IUnitOfWork _unitOfWork;
+    private readonly ILogger<FontService> _logger;
+    private readonly IEventHub _eventHub;
+
+    private const string SupportedFontUrlPrefix = "https://fonts.google.com/specimen/";
+
+    public FontService(IDirectoryService directoryService, IUnitOfWork unitOfWork, ILogger<FontService> logger, IEventHub eventHub)
+    {
+        _directoryService = directoryService;
+        _unitOfWork = unitOfWork;
+        _logger = logger;
+        _eventHub = eventHub;
+    }
+
+    public async Task<EpubFont> CreateFontFromFileAsync(string path)
+    {
+        if (!_directoryService.FileSystem.File.Exists(path))
+        {
+            _logger.LogInformation("Unable to create font from manual upload as font not in temp");
+            throw new KavitaException("errors.font-manual-upload");
+        }
+
+        var fileName = _directoryService.FileSystem.FileInfo.New(path).Name;
+        var nakedFileName = _directoryService.FileSystem.Path.GetFileNameWithoutExtension(fileName);
+        var fontName = Parser.PrettifyFileName(nakedFileName);
+        var normalizedName = Parser.Normalize(nakedFileName);
+
+        if (await _unitOfWork.EpubFontRepository.GetFontDtoByNameAsync(fontName) != null)
+        {
+            throw new KavitaException("errors.font-already-in-use");
+        }
+
+        _directoryService.CopyFileToDirectory(path, _directoryService.EpubFontDirectory);
+        var finalLocation = _directoryService.FileSystem.Path.Join(_directoryService.EpubFontDirectory, fileName);
+
+        var font = new EpubFont()
+        {
+            Name = fontName,
+            NormalizedName = normalizedName,
+            FileName = Path.GetFileName(finalLocation),
+            Provider = FontProvider.User
+        };
+        _unitOfWork.EpubFontRepository.Add(font);
+        await _unitOfWork.CommitAsync();
+
+        // TODO: Send update to UI
+        return font;
+    }
+
+    public async Task Delete(int fontId)
+    {
+        if (await _unitOfWork.EpubFontRepository.IsFontInUseAsync(fontId))
+        {
+            throw new KavitaException("errors.delete-font-in-use");
+        }
+
+        var font = await _unitOfWork.EpubFontRepository.GetFontAsync(fontId);
+        if (font == null) return;
+
+        await RemoveFont(font);
+    }
+
+    public Task CreateFontFromUrl(string url)
+    {
+        if (!url.StartsWith(SupportedFontUrlPrefix))
+        {
+            throw new KavitaException("font-url-not-allowed");
+        }
+
+        // Extract Font name from url
+        var fontFamily = url.Split(SupportedFontUrlPrefix)[1].Split("?")[0];
+        _logger.LogInformation("Preparing to download {FontName} font", fontFamily);
+
+        // TODO: Send a font update event
+        return Task.CompletedTask;
+    }
+
+    public async Task RemoveFont(EpubFont font)
+    {
+        if (font.Provider == FontProvider.System) return;
+
+        var prefs = await _unitOfWork.UserRepository.GetAllPreferencesByFontAsync(font.Name);
+        foreach (var pref in prefs)
+        {
+            pref.BookReaderFontFamily = DefaultFont;
+            _unitOfWork.UserRepository.Update(pref);
+        }
+
+        try
+        {
+            // Copy the theme file to temp for nightly removal (to give user time to reclaim if made a mistake)
+            var existingLocation =
+                _directoryService.FileSystem.Path.Join(_directoryService.SiteThemeDirectory, font.FileName);
+            var newLocation =
+                _directoryService.FileSystem.Path.Join(_directoryService.TempDirectory, font.FileName);
+            _directoryService.CopyFileToDirectory(existingLocation, newLocation);
+            _directoryService.DeleteFiles([existingLocation]);
+        }
+        catch (Exception) { /* Swallow */ }
+
+        _unitOfWork.EpubFontRepository.Remove(font);
+        await _unitOfWork.CommitAsync();
+    }
+}

API/Services/Tasks/Scanner/Parser/Parser.cs

@@ -32,6 +32,7 @@ public static class Parser
     private const string BookFileExtensions = EpubFileExtension + "|" + PdfFileExtension;
     private const string XmlRegexExtensions = @"\.xml";
     public const string MacOsMetadataFileStartsWith = @"._";
+    public const string FontFileExtensions = @"\.[woff2|tff|otf|woff]";
 
     public const string SupportedExtensions =
         ArchiveFileExtensions + "|" + ImageFileExtensions + "|" + BookFileExtensions;
@@ -1259,4 +1260,12 @@ public static class Parser
         }
         return filename;
     }
+
+    /**
+     * Replaced non-alphanumerical chars with a space
+     */
+    public static string PrettifyFileName(string name)
+    {
+        return Regex.Replace(name, "[^a-zA-Z0-9]", " ");
+    }
 }

UI/Web/src/app/_models/preferences/epub-font.ts

@@ -0,0 +1,17 @@
+/**
+ * Where does the font come from
+ */
+export enum FontProvider {
+  System = 1,
+  User = 2,
+}
+
+/**
+ * Font used in the book reader
+ */
+export interface EpubFont {
+  id: number;
+  name: string;
+  provider: FontProvider;
+  fileName: string;
+}

UI/Web/src/app/_services/font.service.ts

@@ -0,0 +1,66 @@
+import {DestroyRef, inject, Injectable} from "@angular/core";
+import {map, ReplaySubject} from "rxjs";
+import {EpubFont, FontProvider} from "../_models/preferences/epub-font";
+import {environment} from 'src/environments/environment';
+import {HttpClient} from "@angular/common/http";
+import {MessageHubService} from "./message-hub.service";
+import {NgxFileDropEntry} from "ngx-file-drop";
+import {AccountService} from "./account.service";
+import {takeUntilDestroyed} from "@angular/core/rxjs-interop";
+
+@Injectable({
+  providedIn: 'root'
+})
+export class FontService {
+  private readonly destroyRef = inject(DestroyRef);
+  public defaultEpubFont: string = 'default';
+
+  private fontsSource = new ReplaySubject<EpubFont[]>(1);
+  public fonts$ = this.fontsSource.asObservable();
+
+  baseUrl: string = environment.apiUrl;
+  apiKey: string = '';
+  encodedKey: string = '';
+
+  constructor(private httpClient: HttpClient, messageHub: MessageHubService, private accountService: AccountService) {
+    this.accountService.currentUser$.pipe(takeUntilDestroyed(this.destroyRef)).subscribe(user => {
+      if (user) {
+        this.apiKey = user.apiKey;
+        this.encodedKey = encodeURIComponent(this.apiKey);
+      }
+    });
+  }
+
+  getFonts() {
+    return this.httpClient.get<Array<EpubFont>>(this.baseUrl + 'font/all').pipe(map(fonts => {
+      this.fontsSource.next(fonts);
+      return fonts;
+    }));
+  }
+
+
+
+  getFontFace(font: EpubFont): FontFace {
+    // TODO: We need to refactor this so that we loadFonts with an array, fonts have an id to remove them, and we don't keep populating the document
+    if (font.provider === FontProvider.System) {
+      return new FontFace(font.name, `url('/assets/fonts/${font.name}/${font.fileName}')`);
+    }
+
+    return new FontFace(font.name, `url(${this.baseUrl}font?fontId=${font.id}&apiKey=${this.encodedKey})`);
+  }
+
+  uploadFont(fontFile: File, fileEntry: NgxFileDropEntry) {
+    const formData = new FormData();
+    formData.append('formFile', fontFile, fileEntry.relativePath);
+    return this.httpClient.post<EpubFont>(this.baseUrl + "font/upload", formData);
+  }
+
+  uploadFromUrl(url: string) {
+    return this.httpClient.post(this.baseUrl + "font/upload-by-url?url=" + encodeURIComponent(url), {});
+  }
+
+  deleteFont(id: number) {
+    return this.httpClient.delete(this.baseUrl + `font?fontId=${id}`);
+  }
+
+}

UI/Web/src/app/book-reader/_components/book-reader/book-reader.component.scss

@@ -1,45 +1,3 @@
-@font-face {
-    font-family: "Fira_Sans";
-    src: url(../../../../assets/fonts/Fira_Sans/FiraSans-Regular.woff2) format("woff2");
-    font-display: swap;
-}
-
-@font-face {
-    font-family: "Lato";
-    src: url(../../../../assets/fonts/Lato/Lato-Regular.woff2) format("woff2");
-    font-display: swap;
-}
-
-@font-face {
-    font-family: "Libre_Baskerville";
-    src: url(../../../../assets/fonts/Libre_Baskerville/LibreBaskerville-Regular.woff2) format("woff2");
-    font-display: swap;
-}
-
-@font-face {
-    font-family: "Merriweather";
-    src: url(../../../../assets/fonts/Merriweather/Merriweather-Regular.woff2) format("woff2");
-    font-display: swap;
-}
-
-@font-face {
-    font-family: "Nanum_Gothic";
-    src: url(../../../../assets/fonts/Nanum_Gothic/NanumGothic-Regular.woff2) format("woff2");
-    font-display: swap;
-}
-
-@font-face {
-    font-family: "RocknRoll_One";
-    src: url(../../../../assets/fonts/RocknRoll_One/RocknRollOne-Regular.woff2) format("woff2");
-    font-display: swap;
-}
-
-@font-face {
-    font-family: "OpenDyslexic2";
-    src: url(../../../../assets/fonts/OpenDyslexic2/OpenDyslexic-Regular.woff2) format("woff2");
-    font-display: swap;
-}
-
 :root {
     --br-actionbar-button-text-color: #6c757d;
     --accordion-body-bg-color: black;

UI/Web/src/app/book-reader/_components/book-reader/book-reader.component.ts

@@ -52,6 +52,7 @@ import {
   PersonalToCEvent
 } from "../personal-table-of-contents/personal-table-of-contents.component";
 import {translate, TranslocoDirective} from "@ngneat/transloco";
+import {FontService} from "../../../_services/font.service";
 
 
 enum TabID {
@@ -124,6 +125,7 @@ export class BookReaderComponent implements OnInit, AfterViewInit, OnDestroy {
   private readonly libraryService = inject(LibraryService);
   private readonly themeService = inject(ThemeService);
   private readonly cdRef = inject(ChangeDetectorRef);
+  private readonly fontService = inject(FontService);
 
   protected readonly BookPageLayoutMode = BookPageLayoutMode;
   protected readonly WritingStyle = WritingStyle;
@@ -583,6 +585,15 @@ export class BookReaderComponent implements OnInit, AfterViewInit, OnDestroy {
   }
 
   ngOnInit(): void {
+    this.fontService.getFonts().subscribe(fonts => {
+      fonts.forEach(font => {
+        this.fontService.getFontFace(font).load().then(loadedFace => {
+          console.log('loaded font: ', loadedFace);
+          (this.document as any).fonts.add(loadedFace);
+        });
+      })
+    })
+
     const libraryId = this.route.snapshot.paramMap.get('libraryId');
     const seriesId = this.route.snapshot.paramMap.get('seriesId');
     const chapterId = this.route.snapshot.paramMap.get('chapterId');

UI/Web/src/app/book-reader/_components/reader-settings/reader-settings.component.html

@@ -16,7 +16,9 @@
                   <div class="mb-3">
                     <label for="library-type" class="form-label">{{t('font-family-label')}}</label>
                     <select class="form-select" id="library-type" formControlName="bookReaderFontFamily">
-                      <option [value]="opt" *ngFor="let opt of fontOptions; let i = index">{{opt | titlecase}}</option>
+                      @for(opt of fontFamilies; track opt) {
+                        <option [value]="opt.name">{{opt.name | titlecase}}</option>
+                      }
                     </select>
                   </div>
                 </div>

UI/Web/src/app/book-reader/_components/reader-settings/reader-settings.component.ts

@@ -19,7 +19,7 @@ import { ThemeProvider } from 'src/app/_models/preferences/site-theme';
 import { User } from 'src/app/_models/user';
 import { AccountService } from 'src/app/_services/account.service';
 import { ThemeService } from 'src/app/_services/theme.service';
-import { FontFamily, BookService } from '../../_services/book.service';
+import {BookService} from '../../_services/book.service';
 import { BookBlackTheme } from '../../_models/book-black-theme';
 import { BookDarkTheme } from '../../_models/book-dark-theme';
 import { BookWhiteTheme } from '../../_models/book-white-theme';
@@ -27,6 +27,8 @@ import { BookPaperTheme } from '../../_models/book-paper-theme';
 import {takeUntilDestroyed} from "@angular/core/rxjs-interop";
 import { NgbAccordionDirective, NgbAccordionItem, NgbAccordionHeader, NgbAccordionToggle, NgbAccordionButton, NgbCollapse, NgbAccordionCollapse, NgbAccordionBody, NgbTooltip } from '@ng-bootstrap/ng-bootstrap';
 import {TranslocoDirective} from "@ngneat/transloco";
+import {FontService} from "../../../_services/font.service";
+import {EpubFont} from "../../../_models/preferences/epub-font";
 
 /**
  * Used for book reader. Do not use for other components
@@ -83,6 +85,7 @@ export const bookColorThemes = [
 ];
 
 const mobileBreakpointMarginOverride = 700;
+const defaultFontFamily = 'Default';
 
 @Component({
     selector: 'app-reader-settings',
@@ -130,8 +133,7 @@ export class ReaderSettingsComponent implements OnInit {
   /**
    * List of all font families user can select from
    */
-  fontOptions: Array<string> = [];
-  fontFamilies: Array<FontFamily> = [];
+  fontFamilies: Array<EpubFont> = [];
   /**
    * Internal property used to capture all the different css properties to render on all elements
    */
@@ -171,20 +173,20 @@ export class ReaderSettingsComponent implements OnInit {
 
   constructor(private bookService: BookService, private accountService: AccountService,
     @Inject(DOCUMENT) private document: Document, private themeService: ThemeService,
-    private readonly cdRef: ChangeDetectorRef) {}
+    private readonly cdRef: ChangeDetectorRef, private fontService: FontService) {}
 
   ngOnInit(): void {
-
-    this.fontFamilies = this.bookService.getFontFamilies();
-    this.fontOptions = this.fontFamilies.map(f => f.title);
+    this.fontService.getFonts().subscribe(fonts => {
+      this.fontFamilies = fonts;
       this.cdRef.markForCheck();
+    })
 
     this.accountService.currentUser$.pipe(take(1)).subscribe(user => {
       if (user) {
         this.user = user;
 
         if (this.user.preferences.bookReaderFontFamily === undefined) {
-          this.user.preferences.bookReaderFontFamily = 'default';
+          this.user.preferences.bookReaderFontFamily = defaultFontFamily;
         }
         if (this.user.preferences.bookReaderFontSize === undefined || this.user.preferences.bookReaderFontSize < 50) {
           this.user.preferences.bookReaderFontSize = 100;
@@ -208,11 +210,11 @@ export class ReaderSettingsComponent implements OnInit {
 
         this.settingsForm.addControl('bookReaderFontFamily', new FormControl(this.user.preferences.bookReaderFontFamily, []));
         this.settingsForm.get('bookReaderFontFamily')!.valueChanges.pipe(takeUntilDestroyed(this.destroyRef)).subscribe(fontName => {
-          const familyName = this.fontFamilies.filter(f => f.title === fontName)[0].family;
-          if (familyName === 'default') {
+          console.log('updating font-family to ', fontName);
+          if (fontName === defaultFontFamily) {
             this.pageStyles['font-family'] = 'inherit';
           } else {
-            this.pageStyles['font-family'] = "'" + familyName + "'";
+            this.pageStyles['font-family'] = "'" + fontName + "'";
           }
 
           this.styleUpdate.emit(this.pageStyles);

UI/Web/src/app/book-reader/_services/book.service.ts

@@ -5,17 +5,6 @@ import { environment } from 'src/environments/environment';
 import { BookChapterItem } from '../_models/book-chapter-item';
 import { BookInfo } from '../_models/book-info';
 
-export interface FontFamily {
-  /**
-   * What the user should see
-   */
-  title: string;
-  /**
-   * The actual font face
-   */
-  family: string;
-}
-
 @Injectable({
   providedIn: 'root'
 })
@@ -25,12 +14,6 @@ export class BookService {
 
   constructor(private http: HttpClient) { }
 
-  getFontFamilies(): Array<FontFamily> {
-    return [{title: 'default', family: 'default'}, {title: 'EBGaramond', family: 'EBGaramond'}, {title: 'Fira Sans', family: 'Fira_Sans'},
-    {title: 'Lato', family: 'Lato'}, {title: 'Libre Baskerville', family: 'Libre_Baskerville'}, {title: 'Merriweather', family: 'Merriweather'},
-    {title: 'Nanum Gothic', family: 'Nanum_Gothic'}, {title: 'RocknRoll One', family: 'RocknRoll_One'}, {title: 'Open Dyslexic', family: 'OpenDyslexic2'}];
-  }
-
   getBookChapters(chapterId: number) {
     return this.http.get<Array<BookChapterItem>>(this.baseUrl + 'book/' + chapterId + '/chapters');
   }

UI/Web/src/app/user-settings/font-manager/font-manager/font-manager.component.html

@@ -0,0 +1,144 @@
+<ng-container *transloco="let t; read:'font-manager'">
+  <div class="container-fluid">
+    <div class="row mb-2">
+      <h3>{{t('title')}}</h3>
+    </div>
+
+    <p>{{t('description')}}</p>
+
+
+    <div class="row g-0 theme-container">
+      <div class="col-lg-3 col-md-5 col-sm-7 col-xs-7 scroller">
+        <div class="pe-2">
+          <ul style="height: 100%" class="list-group list-group-flush">
+
+            @for (font of fonts; track font.name) {
+              <ng-container [ngTemplateOutlet]="fontOption" [ngTemplateOutletContext]="{ $implicit: font}"></ng-container>
+            }
+          </ul>
+        </div>
+      </div>
+
+      <div class="col-lg-9 col-md-7 col-sm-4 col-xs-4 ps-3">
+        <div class="card p-3">
+
+          @if (selectedFont === undefined) {
+
+            <div class="row pb-4">
+              <div class="mx-auto">
+                <div class="d-flex justify-content-center">
+                  <div class="d-flex justify-content-evenly">
+                    {{t('preview-default')}}
+                  </div>
+                </div>
+              </div>
+            </div>
+
+
+            @if (files && files.length > 0) {
+              <app-loading [loading]="isUploadingFont"></app-loading>
+            } @else {
+              <ngx-file-drop (onFileDrop)="dropped($event)" [accept]="acceptableExtensions" [directory]="false"
+                             dropZoneClassName="file-upload" contentClassName="file-upload-zone">
+
+                <ng-template ngx-file-drop-content-tmp let-openFileSelector="openFileSelector">
+
+                  @switch (mode) {
+                    @case ('all') {
+                      <div class="row g-0 mt-3 pb-3">
+                        <div class="mx-auto">
+                          <div class="row g-0 mb-3">
+                            <i class="fa fa-file-upload mx-auto" style="font-size: 24px; width: 20px;" aria-hidden="true"></i>
+                          </div>
+
+                          <div class="d-flex justify-content-center">
+                            <div class="d-flex justify-content-evenly">
+                              <a class="pe-0" href="javascript:void(0)" (click)="changeMode('url')">
+                                <span class="phone-hidden">{{t('enter-an-url-pre-title', {url: ''})}}</span>{{t('url')}}
+                              </a>
+                              <span class="ps-1 pe-1">•</span>
+                              <span class="pe-0" href="javascript:void(0)">{{t('drag-n-drop')}}</span>
+                              <span class="ps-1 pe-1">•</span>
+                              <a class="pe-0" href="javascript:void(0)" (click)="openFileSelector()">{{t('upload')}}<span class="phone-hidden"> {{t('upload-continued')}}</span></a>
+                            </div>
+                          </div>
+                        </div>
+                      </div>
+                    }
+                    @case ('url') {
+                      <form [formGroup]="form">
+                        <div class="row g-0 mt-3 pb-3 ms-md-2 me-md-2">
+                          <div class="input-group col-auto me-md-2" style="width: 83%">
+                            <label class="input-group-text" for="load-url">{{t('url-label')}}</label>
+                            <input type="text" autofocus autocomplete="off" class="form-control" formControlName="fontUrl"
+                                   placeholder="https://" id="load-url">
+                            <button class="btn btn-outline-secondary" type="button" (click)="uploadFromUrl(); changeMode('all');"
+                                    [disabled]="(form.get('fontUrl')?.value).length === 0">
+                              {{t('load')}}
+                            </button>
+                          </div>
+                          <button class="btn btn-secondary col-auto" href="javascript:void(0)" (click)="changeMode('all')">
+                            <i class="fas fa-share" aria-hidden="true" style="transform: rotateY(180deg)"></i>&nbsp;
+                            <span class="phone-hidden">{{t('back')}}</span>
+                          </button>
+                        </div>
+                      </form>
+                    }
+                  }
+                </ng-template>
+
+              </ngx-file-drop>
+            }
+
+          } @else if (selectedFont) {
+            <h4>
+              {{selectedFont.name | sentenceCase}}
+              <div class="float-end">
+                @if (selectedFont.provider !== FontProvider.System && selectedFont.name !== 'Default') {
+                  <button class="btn btn-danger me-1" (click)="deleteFont(selectedFont.id)">{{t('delete')}}</button>
+                }
+              </div>
+            </h4>
+
+            <div>
+              <ng-container [ngTemplateOutlet]="availableFont" [ngTemplateOutletContext]="{ $implicit: selectedFont}"></ng-container>
+            </div>
+          }
+        </div>
+      </div>
+    </div>
+  </div>
+
+  <ng-template #fontOption let-item>
+    @if (item !== undefined) {
+      <li class="list-group-item d-flex justify-content-between align-items-start {{selectedFont && selectedFont.name === item.name ? 'active' : ''}}" (click)="selectFont(item)">
+        <div class="ms-2 me-auto">
+          <div class="fw-bold">{{item.name | sentenceCase}}</div>
+        </div>
+        <div><span class="pill p-1 mx-1 provider">{{item.provider | siteThemeProvider}}</span></div>
+      </li>
+    }
+  </ng-template>
+
+  <ng-template #availableFont let-item>
+    @if (item) {
+      <div class="d-flex justify-content-between w-100">
+        @if (item.name === 'Default') {
+          <div class="ms-2 me-auto fs-6">
+            This font cannot be previewed. This will take the default style from the book.
+          </div>
+        }
+
+        <div class="d-flex justify-content-end">
+          @if (item.hasOwnProperty('provider') && item.provider === FontProvider.User && item.hasOwnProperty('id')) {
+            <button class="btn btn-danger me-1" (click)="deleteFont(item.id)">{{t('delete')}}</button>
+          }
+        </div>
+      </div>
+
+      <div class="p-1 me-1 preview mt-2 flex-grow-1 text-center w-100 fs-4 fs-lg-3 mt-2" [ngStyle]="{'font-family': item.name, 'word-break': 'keep-all'}">
+        The quick brown fox jumps over the lazy dog
+      </div>
+    }
+  </ng-template>
+</ng-container>

UI/Web/src/app/user-settings/font-manager/font-manager/font-manager.component.scss

@@ -0,0 +1,26 @@
+.pill {
+  font-size: .8rem;
+  background-color: var(--card-bg-color);
+  border-radius: 0.375rem;
+}
+
+.list-group-item, .list-group-item.active {
+  border-top-width: 0;
+  border-bottom-width: 0;
+}
+
+ngx-file-drop ::ng-deep > div {
+  // styling for the outer drop box
+  width: 100%;
+  border: 2px solid var(--primary-color);
+  border-radius: 5px;
+  height: 100px;
+  margin: auto;
+
+  > div {
+    // styling for the inner box (template)
+    width: 100%;
+    display: inline-block;
+
+  }
+}

UI/Web/src/app/user-settings/font-manager/font-manager/font-manager.component.ts

@@ -0,0 +1,142 @@
+import {ChangeDetectionStrategy, ChangeDetectorRef, Component, DestroyRef, Inject, inject, OnInit} from '@angular/core';
+import {translate, TranslocoDirective} from "@ngneat/transloco";
+import {FontService} from "src/app/_services/font.service";
+import {AccountService} from "../../../_services/account.service";
+import {ToastrService} from "ngx-toastr";
+import {ConfirmService} from "../../../shared/confirm.service";
+import {EpubFont, FontProvider} from 'src/app/_models/preferences/epub-font';
+import {User} from "../../../_models/user";
+import {takeUntilDestroyed} from "@angular/core/rxjs-interop";
+import {shareReplay} from "rxjs/operators";
+import {map} from "rxjs";
+import {NgxFileDropEntry, NgxFileDropModule} from "ngx-file-drop";
+import {AsyncPipe, DOCUMENT, NgIf, NgStyle, NgTemplateOutlet} from "@angular/common";
+import {LoadingComponent} from "../../../shared/loading/loading.component";
+import {FormBuilder, FormControl, FormGroup, FormsModule, ReactiveFormsModule} from "@angular/forms";
+import {SentenceCasePipe} from "../../../_pipes/sentence-case.pipe";
+import {SiteThemeProviderPipe} from "../../../_pipes/site-theme-provider.pipe";
+import {CarouselReelComponent} from "../../../carousel/_components/carousel-reel/carousel-reel.component";
+import {DefaultValuePipe} from "../../../_pipes/default-value.pipe";
+import {ImageComponent} from "../../../shared/image/image.component";
+import {SafeUrlPipe} from "../../../_pipes/safe-url.pipe";
+
+@Component({
+  selector: 'app-font-manager',
+  imports: [
+    TranslocoDirective,
+    AsyncPipe,
+    LoadingComponent,
+    NgxFileDropModule,
+    FormsModule,
+    NgIf,
+    ReactiveFormsModule,
+    SentenceCasePipe,
+    SiteThemeProviderPipe,
+    NgTemplateOutlet,
+    NgStyle,
+    CarouselReelComponent,
+    DefaultValuePipe,
+    ImageComponent,
+    SafeUrlPipe
+  ],
+  templateUrl: './font-manager.component.html',
+  styleUrl: './font-manager.component.scss',
+  changeDetection: ChangeDetectionStrategy.OnPush,
+  standalone: true,
+})
+export class FontManagerComponent implements OnInit {
+  private readonly destroyRef = inject(DestroyRef);
+  protected readonly fontService = inject(FontService);
+  private readonly accountService = inject(AccountService);
+  public readonly fb = inject(FormBuilder);
+  private readonly toastr = inject(ToastrService);
+  private readonly cdRef = inject(ChangeDetectorRef);
+  private readonly confirmService = inject(ConfirmService);
+
+  protected readonly FontProvider = FontProvider;
+
+  user: User | undefined;
+  fonts: Array<EpubFont> = [];
+  hasAdmin$ = this.accountService.currentUser$.pipe(
+    takeUntilDestroyed(this.destroyRef), shareReplay({refCount: true, bufferSize: 1}),
+    map(c => c && this.accountService.hasAdminRole(c))
+  );
+
+  form: FormGroup = new FormGroup({
+    fontUrl: new FormControl('', [])
+  });
+
+  selectedFont: EpubFont | undefined = undefined;
+
+  files: NgxFileDropEntry[] = [];
+  acceptableExtensions = ['.woff2', 'woff', 'tff', 'otf'].join(',');
+  mode: 'file' | 'url' | 'all' = 'all';
+  isUploadingFont: boolean = false;
+
+
+  constructor(@Inject(DOCUMENT) private document: Document) {}
+
+  ngOnInit() {
+    this.loadFonts();
+  }
+
+  loadFonts() {
+    this.fontService.getFonts().subscribe(fonts => {
+      this.fonts = fonts;
+      this.cdRef.markForCheck();
+    });
+  }
+
+  selectFont(font: EpubFont) {
+    this.fontService.getFontFace(font).load().then(loadedFace => {
+      (this.document as any).fonts.add(loadedFace);
+    });
+    this.selectedFont = font;
+    this.cdRef.markForCheck();
+  }
+
+  dropped(files: NgxFileDropEntry[]) {
+    for (const droppedFile of files) {
+      if (!droppedFile.fileEntry.isFile) {
+        continue;
+      }
+
+      const fileEntry = droppedFile.fileEntry as FileSystemFileEntry;
+      fileEntry.file((file: File) => {
+        this.fontService.uploadFont(file, droppedFile).subscribe(f => {
+          this.isUploadingFont = false;
+          this.fonts = [...this.fonts, f];
+          this.cdRef.markForCheck();
+        });
+      });
+    }
+    this.isUploadingFont = true;
+    this.cdRef.markForCheck();
+  }
+
+  uploadFromUrl() {
+    const url = this.form.get('fontUrl')?.value.trim();
+    if (!url || url === '') return;
+
+    this.fontService.uploadFromUrl(url).subscribe(() => {
+      this.loadFonts();
+    });
+  }
+
+  async deleteFont(id: number) {
+    if (!await this.confirmService.confirm(translate('toasts.confirm-delete-font'))) {
+      return;
+    }
+
+    this.fontService.deleteFont(id).subscribe(() => {
+      this.fonts = this.fonts.filter(f => f.id !== id);
+      this.cdRef.markForCheck();
+    });
+  }
+
+  changeMode(mode: 'file' | 'url' | 'all') {
+    this.mode = mode;
+    this.cdRef.markForCheck();
+  }
+
+}

UI/Web/src/app/user-settings/theme-manager/theme-manager.component.html

@@ -71,8 +71,7 @@
               </ngx-file-drop>
             }
 
-          }
-          @else {
+          } @else {
             <h4>
               {{selectedTheme.name | sentenceCase}}
               <div class="float-end">

UI/Web/src/app/user-settings/user-preferences/user-preferences.component.html

@@ -619,6 +619,10 @@
           <app-theme-manager></app-theme-manager>
           }
 
+          @defer (when tab.fragment === FragmentID.Font; prefetch on idle) {
+            <app-font-manager></app-font-manager>
+          }
+
           @defer (when tab.fragment === FragmentID.Devices; prefetch on idle) {
           <app-manage-devices></app-manage-devices>
           }

UI/Web/src/app/user-settings/user-preferences/user-preferences.component.ts

@@ -33,7 +33,6 @@ import {SettingsService} from 'src/app/admin/settings.service';
 import {BookPageLayoutMode} from 'src/app/_models/readers/book-page-layout-mode';
 import {forkJoin} from 'rxjs';
 import {bookColorThemes} from 'src/app/book-reader/_components/reader-settings/reader-settings.component';
-import {BookService} from 'src/app/book-reader/_services/book.service';
 import {takeUntilDestroyed} from "@angular/core/rxjs-interop";
 import {SentenceCasePipe} from '../../_pipes/sentence-case.pipe';
 import {UserHoldsComponent} from '../user-holds/user-holds.component';
@@ -75,8 +74,9 @@ import {ManageScrobblingProvidersComponent} from "../manage-scrobbling-providers
 import {PdfLayoutModePipe} from "../../pdf-reader/_pipe/pdf-layout-mode.pipe";
 import {PdfTheme} from "../../_models/preferences/pdf-theme";
 import {PdfScrollMode} from "../../_models/preferences/pdf-scroll-mode";
-import {PdfLayoutMode} from "../../_models/preferences/pdf-layout-mode";
 import {PdfSpreadMode} from "../../_models/preferences/pdf-spread-mode";
+import {FontManagerComponent} from "../font-manager/font-manager/font-manager.component";
+import {FontService} from "../../_services/font.service";
 
 enum AccordionPanelID {
   ImageReader = 'image-reader',
@@ -90,6 +90,7 @@ enum FragmentID {
   Preferences = '',
   Clients = 'clients',
   Theme = 'theme',
+  Font = 'font',
   Devices = 'devices',
   Stats = 'stats',
   Scrobbling = 'scrobbling'
@@ -105,14 +106,14 @@ enum FragmentID {
     ChangePasswordComponent, ChangeAgeRestrictionComponent, ReactiveFormsModule, NgbAccordionDirective, NgbAccordionItem, NgbAccordionHeader,
     NgbAccordionToggle, NgbAccordionButton, NgbCollapse, NgbAccordionCollapse, NgbAccordionBody, NgbTooltip, NgTemplateOutlet, ColorPickerModule, ApiKeyComponent,
     ThemeManagerComponent, ManageDevicesComponent, UserStatsComponent, UserScrobbleHistoryComponent, UserHoldsComponent, NgbNavOutlet, TitleCasePipe, SentenceCasePipe,
-    TranslocoDirective, LoadingComponent, ManageScrobblingProvidersComponent, PdfLayoutModePipe],
+    TranslocoDirective, LoadingComponent, ManageScrobblingProvidersComponent, PdfLayoutModePipe, FontManagerComponent],
 })
 export class UserPreferencesComponent implements OnInit, OnDestroy {
 
   private readonly destroyRef = inject(DestroyRef);
   private readonly accountService = inject(AccountService);
   private readonly toastr = inject(ToastrService);
-  private readonly bookService = inject(BookService);
+  private readonly fontService = inject(FontService);
   private readonly titleService = inject(Title);
   private readonly route = inject(ActivatedRoute);
   private readonly settingsService = inject(SettingsService);
@@ -153,6 +154,7 @@ export class UserPreferencesComponent implements OnInit, OnDestroy {
     {title: 'preferences-tab', fragment: FragmentID.Preferences},
     {title: '3rd-party-clients-tab', fragment: FragmentID.Clients},
     {title: 'theme-tab', fragment: FragmentID.Theme},
+    {title: 'font-tab', fragment: FragmentID.Font},
     {title: 'devices-tab', fragment: FragmentID.Devices},
     {title: 'stats-tab', fragment: FragmentID.Stats},
   ];
@@ -166,7 +168,6 @@ export class UserPreferencesComponent implements OnInit, OnDestroy {
 
 
   constructor() {
-    this.fontFamilies = this.bookService.getFontFamilies().map(f => f.title);
     this.cdRef.markForCheck();
 
     this.accountService.getOpdsUrl().subscribe(res => {
@@ -174,6 +175,11 @@ export class UserPreferencesComponent implements OnInit, OnDestroy {
       this.cdRef.markForCheck();
     });
 
+    this.fontService.getFonts().subscribe(res => {
+      this.fontFamilies = res.map(f => f.name);
+      this.cdRef.markForCheck();
+    })
+
     this.settingsService.getOpdsEnabled().subscribe(res => {
       this.opdsEnabled = res;
       this.cdRef.markForCheck();
@@ -227,7 +233,7 @@ export class UserPreferencesComponent implements OnInit, OnDestroy {
       this.user.preferences = results.pref;
 
       if (this.fontFamilies.indexOf(this.user.preferences.bookReaderFontFamily) < 0) {
-        this.user.preferences.bookReaderFontFamily = 'default';
+        this.user.preferences.bookReaderFontFamily = 'Default';
       }
 
       this.settingsForm.addControl('readingDirection', new FormControl(this.user.preferences.readingDirection, []));