La in dapper, och routing. fixade upp lite exempelsidor

Server/Bibblan.csproj

@@ -10,6 +10,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="Dapper" Version="2.1.66" />
     <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="9.0.6" />
     <PackageReference Include="Microsoft.AspNetCore.SpaProxy">
       <Version>9.*-*</Version>

Server/Business/Services/DatabaseService.cs

@@ -0,0 +1,45 @@
+using Bibblan.Models;
+using Bibblan.ViewModels;
+using Dapper;
+using Microsoft.Extensions.Options;
+using Npgsql;
+
+namespace Bibblan.Business.Services
+{
+
+    public class BookFilter
+    {
+        public int? Author;
+    }
+
+    public class DatabaseService
+    {
+        BibblanOptions settings;
+        public DatabaseService(IOptions<BibblanOptions> options) {
+            settings = options.Value;
+        }
+
+        public IEnumerable<Books> GetBooks(int count, BookFilter filter = null)
+        {
+            var conn = new NpgsqlConnection(settings.BibblanConnection);
+            var query = "select * from books";
+            if(filter != null)
+            {
+                query += " where ";
+                if(filter.Author != null)
+                {
+                    query += $"id in (select book from books_authors_link where author = {filter.Author})";
+                }
+            }
+            return conn.Query<Books>(query).Take(count).ToList();
+        }
+
+        public IEnumerable<AuthorVm> GetAuthors(int count)
+        {
+            var query = "select a.id, a.name, count(bal.*) as bookcount\r\nfrom authors a\r\nleft join books_authors_link bal on a.id  = bal.author\r\ngroup by a.id , a.name ";
+            var conn = new NpgsqlConnection(settings.BibblanConnection);
+            return conn.Query<AuthorVm>(query).Take(count).ToList();
+
+        }
+    }
+}

Server/Controllers/BibblanController.cs

@@ -0,0 +1,53 @@
+using Bibblan.Business.Services;
+using Microsoft.AspNetCore.Mvc;
+
+namespace Bibblan.Controllers
+{
+    [ApiController]
+    [Route("api/[controller]")]
+    public class BibblanController : ControllerBase
+    {
+        DatabaseService _db;
+        CalibreService _calibre;
+
+        public BibblanController(DatabaseService databaseService, CalibreService calibre)
+        {
+            _db = databaseService;
+            _calibre = calibre;
+        }
+
+        [HttpGet("cover")]
+        public IActionResult GetCover(string path)
+        {
+            //TODO: Bör kanske inte gå direkt mot calibres filer.. 
+            var bytes = _calibre.Cover(path);
+            return File(bytes, "image/jpeg", true);
+        }
+
+        [HttpGet("books")]
+        public IActionResult GetBooks()
+        {
+            var authors = _db.GetBooks(100).ToList();
+            return Ok(authors);
+        }
+
+        [HttpGet("authors")]
+        public IActionResult GetAuthors()
+        {
+            var authors = _db.GetAuthors(100).ToList();
+            return Ok(authors);
+        }
+
+        [HttpGet("books/author/{authorid}")]
+        public IActionResult GetBooksByAuthor(int authorid)
+        {
+            var authors = _db.GetBooks(100, new BookFilter
+            {
+                Author = authorid
+            }).ToList();
+            return Ok(authors);
+        }
+
+
+    }
+}

Server/Program.cs

@@ -13,6 +13,7 @@ configSection.Bind(config);
 builder.Services.Configure<BibblanOptions>(configSection);
 
 builder.Services.AddScoped<CalibreService, CalibreService>();
+builder.Services.AddScoped<DatabaseService, DatabaseService>();
 
 
 builder.Services.AddControllers();
@@ -26,6 +27,8 @@ builder.Services.AddDbContext<PostgresCalibreContext>(options => options.UseNpgs
 
 var app = builder.Build();
 
+Dapper.DefaultTypeMap.MatchNamesWithUnderscores = true;
+
 app.UseDefaultFiles();
 app.MapStaticAssets();