POS-24 Dodanie prostego rozpoznawania tekstu

Serwer/Serwer.Api/Controllers/ImageController.cs

@@ -29,9 +29,9 @@ namespace Serwer.Api.Controllers
             using (var memoryStream = new MemoryStream())
             {
                 await image.CopyToAsync(memoryStream);
-                await _imageService.Process(image.Name, image.ContentType, memoryStream.ToArray());
-            }
-            return Ok();
+                var response = await _imageService.Process(image.Name, image.ContentType, memoryStream.ToArray());
+                return Ok(response);
+            }
         }
     }
 }

Serwer/Serwer.Api/Serwer.Api.csproj

@@ -4,6 +4,10 @@
     <TargetFramework>net5.0</TargetFramework>
   </PropertyGroup>
 
+  <ItemGroup>
+    <Content Remove="wwwroot\tessdata\eng.traineddata" />
+  </ItemGroup>
+
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="5.0.0" NoWarn="NU1605" />
     <PackageReference Include="Microsoft.AspNetCore.Authentication.OpenIdConnect" Version="5.0.0" NoWarn="NU1605" />
@@ -15,4 +19,8 @@
     <ProjectReference Include="..\Serwer.Infrastructure\Serwer.Infrastructure.csproj" />
   </ItemGroup>
 
+  <ItemGroup>
+    <None Include="wwwroot\tessdata\eng.traineddata" />
+  </ItemGroup>
+
 </Project>

Serwer/Serwer.Api/Startup.cs

@@ -25,12 +25,14 @@ namespace Serwer.Api
 {
     public class Startup
     {
-        public Startup(IConfiguration configuration)
+        public Startup(IConfiguration configuration, IWebHostEnvironment env)
         {
             Configuration = configuration;
+            WebRootPath = env.WebRootPath;
         }
 
         public IConfiguration Configuration { get; }
+        protected string WebRootPath { get; set; }
 
         // This method gets called by the runtime. Use this method to add services to the container.
         public void ConfigureServices(IServiceCollection services)
@@ -41,6 +43,7 @@ namespace Serwer.Api
                 c.SwaggerDoc("v1", new OpenApiInfo { Title = "Serwer.Api", Version = "v1" });
             });
 
+            var hostEnviroment = new HostEnviroment { RootPath = WebRootPath};
             var jwtSettings = new JwtSettings()
             {
                 Issuer = "PoszukiwaczInc",
@@ -60,6 +63,7 @@ namespace Serwer.Api
                     };
                 });
 
+            services.AddSingleton<IHostEnviroment>(hostEnviroment);
             services.AddSingleton<IMapper>(AutoMapperConfig.Initialize());
             services.AddSingleton<IJwtHandler, JwtHandler>(sp => new JwtHandler(jwtSettings));
             services.AddScoped<IUserRepository, UserRepository>();
@@ -82,8 +86,6 @@ namespace Serwer.Api
                 app.UseSwagger();
                 app.UseSwaggerUI(c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "Serwer.Api v1"));
             }
-
-
             app.UseRouting();
 
             app.UseAuthentication();

Serwer/Serwer.Infrastructure/Services/IImageService.cs

@@ -9,6 +9,6 @@ namespace Serwer.Infrastructure.Services
 {
     public interface IImageService
     {
-        Task Process(string name, string contentType, byte[] bytes);
+        Task<string> Process(string name, string contentType, byte[] bytes);
     }
 }

Serwer/Serwer.Infrastructure/Services/ImageService.cs

@@ -1,19 +1,30 @@
 using Serwer.Core.Domain;
+using Serwer.Infrastructure.Settings;
 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using Tesseract;
 
 namespace Serwer.Infrastructure.Services
 {
     public class ImageService : IImageService
     {
         private readonly ISet<File> _files = new HashSet<File>();
-        public async Task Process(string name, string contentType, byte[] bytes)
+        private readonly string _env;
+        public ImageService(IHostEnviroment hostEnviroment)
         {
-            var file = File.Create(name, contentType, bytes);
-            await Task.FromResult(_files.Add(file));
+            _env = hostEnviroment.RootPath;
+        }
+        public async Task<string> Process(string name, string contentType, byte[] bytes)
+        {
+            var engine = new TesseractEngine(System.IO.Path.Combine(_env, "tessdata"),"eng+equ", EngineMode.Default);
+            var img = Pix.LoadFromMemory(bytes);
+            var res = engine.Process(img);
+            var txt = res.GetText();
+
+            return await Task.FromResult(txt);
         }
     }
 }

Serwer/Serwer.Infrastructure/Serwer.Infrastructure.csproj

@@ -8,10 +8,27 @@
     <PackageReference Include="AutoMapper" Version="10.1.1" />
     <PackageReference Include="Microsoft.IdentityModel.Tokens" Version="6.8.0" />
     <PackageReference Include="System.IdentityModel.Tokens.Jwt" Version="6.8.0" />
+    <PackageReference Include="Tesseract" Version="4.1.1" />
   </ItemGroup>
 
   <ItemGroup>
     <ProjectReference Include="..\Serwer.Core\Serwer.Core.csproj" />
   </ItemGroup>
 
+  <ItemGroup>
+    <None Remove="C:\Users\ppopo\.nuget\packages\tesseract\4.1.1\build\\..\x64\leptonica-1.80.0.dll" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Remove="C:\Users\ppopo\.nuget\packages\tesseract\4.1.1\build\\..\x64\tesseract41.dll" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Remove="C:\Users\ppopo\.nuget\packages\tesseract\4.1.1\build\\..\x86\leptonica-1.80.0.dll" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Remove="C:\Users\ppopo\.nuget\packages\tesseract\4.1.1\build\\..\x86\tesseract41.dll" />
+  </ItemGroup>
+
 </Project>

Serwer/Serwer.Infrastructure/Settings/HostEnviroment.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Serwer.Infrastructure.Settings
+{
+    public class HostEnviroment: IHostEnviroment
+    {
+        public string RootPath { get; set; }
+    }
+}

Serwer/Serwer.Infrastructure/Settings/IHostEnviroment.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Serwer.Infrastructure.Settings
+{
+    public interface IHostEnviroment
+    {
+        string RootPath { get; set; }
+    }
+}