Epubの情報の取得GPT4による解析

KoeBook.Core/Contracts/Services/IAnalyzerService.cs

@@ -8,5 +8,5 @@ public interface IAnalyzerService
     /// 本の情報の取得・解析を行います
     /// </summary>
     /// <returns>編集前の読み上げテキスト</returns>
-    ValueTask<BookScripts> AnalyzeAsync(BookProperties bookProperties, CancellationToken cancellationToken);
+    ValueTask<BookScripts> AnalyzeAsync(BookProperties bookProperties, string tempDirectory, string coverFilePath, CancellationToken cancellationToken);
 }

KoeBook.Core/Contracts/Services/ILlmAnalyzerService.cs

@@ -0,0 +1,8 @@
+using KoeBook.Core.Models;
+
+namespace KoeBook.Core.Contracts.Services;
+
+public interface ILlmAnalyzerService
+{
+    ValueTask<BookScripts> LlmAnalyzeScriptLinesAsync(BookProperties bookProperties, List<ScriptLine> scriptLines, List<string> chunks, CancellationToken cancellationToken);
+}

KoeBook.Core/Contracts/Services/ISecretSettingsService.cs

@@ -2,7 +2,9 @@
 
 public interface ISecretSettingsService
 {
-    Task<string?> GetApiKeyAsync(string folderPath, CancellationToken cancellationToken);
+    string? ApiKey { get; }
+
+    Task<string?> InitializeAsync(string folderPath, CancellationToken cancellationToken);
 
     Task SaveApiKeyAsync(string folderPath, string apiKey, CancellationToken cancellationToken);
 }

KoeBook.Core/EbookException.cs

@@ -40,4 +40,10 @@ public enum ExceptionType
 
     [EnumMember(Value = "有効な Style Bert VITS のAPIルートを設定してください")]
     UnknownStyleBertVitsRoot,
+
+    [EnumMember(Value = "GPT4による話者・スタイル設定に失敗しました")]
+    Gpt4TalkerAndStyleSettingFailed,
+
+    [EnumMember(Value = "webページの解析に失敗しました")]
+    WebScrapingFailed
 }

KoeBook.Core/KoeBook.Core.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFramework>net8.0</TargetFramework>
     <RootNamespace>KoeBook.Core</RootNamespace>
@@ -9,8 +9,8 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="Betalgo.OpenAI" Version="7.4.6" />
     <PackageReference Include="FastEnum" Version="1.8.0" />
-    <PackageReference Include="Microsoft.Extensions.Http" Version="8.0.0" />
     <PackageReference Include="System.Security.Cryptography.ProtectedData" Version="8.0.0" />
   </ItemGroup>
 

KoeBook.Core/Services/AnalyzerService _CoverFileBytes.cs

@@ -0,0 +1,13 @@
+using System.Text;
+using System.Text.RegularExpressions;
+using KoeBook.Core.Contracts.Services;
+using KoeBook.Core.Models;
+using KoeBook.Epub;
+using KoeBook.Epub.Service;
+
+namespace KoeBook.Core.Services;
+
+public partial class AnalyzerService
+{
+    public ReadOnlySpan<byte> CoverFile => [89, 0x50, 0x4e, 0x47, 0xd, 0xa, 0x1a, 0xa, 0x0, 0x0, 0x0, 0xd, 0x49, 0x48, 0x44, 0x52, 0x0, 0x0, 0x1, 0x2c, 0x0, 0x0, 0x1, 0x90, 0x8, 0x6, 0x0, 0x0, 0x0, 0x14, 0x75, 0x5d, 0x7b, 0x0, 0x0, 0x0, 0x1, 0x73, 0x52, 0x47, 0x42, 0x0, 0xae, 0xce, 0x1c, 0xe9, 0x0, 0x0, 0x0, 0x4, 0x67, 0x41, 0x4d, 0x41, 0x0, 0x0, 0xb1, 0x8f, 0xb, 0xfc, 0x61, 0x5, 0x0, 0x0, 0x0, 0x9, 0x70, 0x48, 0x59, 0x73, 0x0, 0x0, 0x1d, 0x87, 0x0, 0x0, 0x1d, 0x87, 0x1, 0x8f, 0xe5, 0xf1, 0x65, 0x0, 0x0, 0x4, 0xfa, 0x49, 0x44, 0x41, 0x54, 0x78, 0x5e, 0xed, 0xd4, 0x1, 0xd, 0x0, 0x0, 0xc, 0xc3, 0xa0, 0xfb, 0x37, 0xbd, 0xeb, 0x68, 0x2, 0x22, 0xb8, 0x1, 0x44, 0x8, 0xb, 0xc8, 0x10, 0x16, 0x90, 0x21, 0x2c, 0x20, 0x43, 0x58, 0x40, 0x86, 0xb0, 0x80, 0xc, 0x61, 0x1, 0x19, 0xc2, 0x2, 0x32, 0x84, 0x5, 0x64, 0x8, 0xb, 0xc8, 0x10, 0x16, 0x90, 0x21, 0x2c, 0x20, 0x43, 0x58, 0x40, 0x86, 0xb0, 0x80, 0xc, 0x61, 0x1, 0x19, 0xc2, 0x2, 0x32, 0x84, 0x5, 0x64, 0x8, 0xb, 0xc8, 0x10, 0x16, 0x90, 0x21, 0x2c, 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+}

KoeBook.Core/Services/AnalyzerService.cs

@@ -0,0 +1,113 @@
+using System.Text;
+using System.Text.RegularExpressions;
+using KoeBook.Core.Contracts.Services;
+using KoeBook.Core.Models;
+using KoeBook.Epub;
+using KoeBook.Epub.Service;
+
+namespace KoeBook.Core.Services;
+
+public partial class AnalyzerService(IScrapingService scrapingService, IEpubDocumentStoreService epubDocumentStoreService, ILlmAnalyzerService llmAnalyzerService) : IAnalyzerService
+{
+    private readonly IScrapingService _scrapingService = scrapingService;
+    private readonly IEpubDocumentStoreService _epubDocumentStoreService = epubDocumentStoreService;
+    private readonly ILlmAnalyzerService _llmAnalyzerService = llmAnalyzerService;
+    private Dictionary<string, string> _rubyReplacements = new Dictionary<string, string>();
+
+    public async ValueTask<BookScripts> AnalyzeAsync(BookProperties bookProperties, string tempDirectory, string coverFilePath, CancellationToken cancellationToken)
+    {
+        coverFilePath = Path.Combine(tempDirectory, "Cover.png");
+        using var fs = File.Create(coverFilePath);
+        await fs.WriteAsync(CoverFile.ToArray(), cancellationToken);
+        await fs.FlushAsync(cancellationToken);
+
+        EpubDocument? document;
+        try
+        {
+            document = await _scrapingService.ScrapingAsync(bookProperties.Source, coverFilePath, tempDirectory, bookProperties.Id, cancellationToken);
+        }
+        catch (Exception ex)
+        {
+            EbookException.Throw(ExceptionType.WebScrapingFailed, "", ex);
+            return default;
+        }
+        _epubDocumentStoreService.Register(document, cancellationToken);
+
+        var scriptLines = new List<ScriptLine>();
+        foreach (var chapter in document.Chapters)
+        {
+            foreach (var section in chapter.Sections)
+            {
+                foreach (var element in section.Elements)
+                {
+                    if (element is Paragraph paragraph)
+                    {
+                        var line = paragraph.Text;
+                        // rubyタグがあればルビのdictionaryに登録
+                        var rubyDict = ExtractRuby(line);
+
+                        foreach (var ruby in rubyDict)
+                        {
+                            if (!_rubyReplacements.ContainsKey(ruby.Key))
+                            {
+                                _rubyReplacements.Add(ruby.Key, ruby.Value);
+                            }
+                        }
+                        // ルビを置換
+                        line = ReplaceBaseTextWithRuby(line, rubyDict);
+
+                        scriptLines.Add(new ScriptLine(paragraph, line, "", ""));
+                    }
+                }
+            }
+        }
+
+        // 800文字以上になったら１チャンクに分ける
+        var chunks = new List<string>();
+        var chunk = new StringBuilder();
+        foreach (var line in scriptLines)
+        {
+            if (chunk.Length + line.Text.Length > 800)
+            {
+                chunks.Add(chunk.ToString());
+                chunk.Clear();
+            }
+            chunk.AppendLine(line.Text);
+        }
+        if (chunk.Length > 0) chunks.Add(chunk.ToString());
+
+        // GPT4による話者、スタイル解析
+        var bookScripts = await _llmAnalyzerService.LlmAnalyzeScriptLinesAsync(bookProperties, scriptLines, chunks, cancellationToken);
+
+        return bookScripts;
+    }
+
+    private static Dictionary<string, string> ExtractRuby(string text)
+    {
+        var rubyDict = new Dictionary<string, string>();
+        var rubyRegex = new Regex("<ruby><rb>(.*?)</rb><rp>（</rp><rt>(.*?)</rt><rp>）</rp></ruby>");
+
+        foreach (Match match in rubyRegex.Matches(text))
+        {
+            if (!rubyDict.ContainsKey(match.Groups[1].Value))
+            {
+                rubyDict.Add(match.Groups[1].Value, match.Groups[2].Value);
+            }
+        }
+
+        return rubyDict;
+    }
+
+    private static string ReplaceBaseTextWithRuby(string text, Dictionary<string, string> rubyDict)
+    {
+        // 元のテキストからルビタグをすべてルビテキストに置き換える
+        var resultText = text;
+        foreach (var pair in rubyDict)
+        {
+            var rubyTag = $"<ruby><rb>{pair.Key}</rb><rp>（</rp><rt>{pair.Value}</rt><rp>）</rp></ruby>";
+            resultText = resultText.Replace(rubyTag, pair.Value);
+        }
+
+        return resultText;
+    }
+}