Add Endpoints to retrieve Database-Entries for Author, Link, and MangaAltTitle from Id

API/Controllers/QueryController.cs

@@ -0,0 +1,75 @@
+using API.Schema;
+using Asp.Versioning;
+using Microsoft.AspNetCore.Mvc;
+using static Microsoft.AspNetCore.Http.StatusCodes;
+
+namespace API.Controllers;
+
+[ApiVersion(2)]
+[ApiController]
+[Route("v{v:apiVersion}/[controller]")]
+public class QueryController(PgsqlContext context) : Controller
+{
+    [HttpGet("Author/{AuthorId}")]
+    [ProducesResponseType<Author>(Status200OK, "application/json")]
+    [ProducesResponseType(Status404NotFound)]
+    public IActionResult GetAuthor(string AuthorId)
+    {
+        Author? ret = context.Authors.Find(AuthorId);
+        if (ret is null)
+            return NotFound();
+        return Ok(ret);
+    }
+    
+    [HttpGet("Mangas/WithAuthorId/{AuthorId}")]
+    [ProducesResponseType<Manga[]>(Status200OK, "application/json")]
+    public IActionResult GetMangaWithAuthorIds(string AuthorId)
+    {
+        return Ok(context.Manga.Where(m => m.AuthorIds.Contains(AuthorId)));
+    }
+    
+    [HttpGet("Link/{LinkId}")]
+    [ProducesResponseType<Link>(Status200OK, "application/json")]
+    [ProducesResponseType(Status404NotFound)]
+    public IActionResult GetLink(string LinkId)
+    {
+        Link? ret = context.Link.Find(LinkId);
+        if (ret is null)
+            return NotFound();
+        return Ok(ret);
+    }
+    
+    [HttpGet("Links/WithIds")]
+    [ProducesResponseType<Link[]>(Status200OK, "application/json")]
+    public IActionResult GetLink([FromBody]string[] LinkIds)
+    {
+        Link[] ret = context.Link.Where(l => LinkIds.Contains(l.LinkId)).ToArray();
+        return Ok(ret);
+    }
+    
+    [HttpGet("AltTitle/{AltTitleId}")]
+    [ProducesResponseType<MangaAltTitle>(Status200OK, "application/json")]
+    [ProducesResponseType(Status404NotFound)]
+    public IActionResult GetAltTitle(string AltTitleId)
+    {
+        MangaAltTitle? ret = context.AltTitles.Find(AltTitleId);
+        if (ret is null)
+            return NotFound();
+        return Ok(ret);
+    }
+    
+    [HttpGet("AltTitles/WithIds")]
+    [ProducesResponseType<MangaAltTitle[]>(Status200OK, "application/json")]
+    public IActionResult GetAltTitle([FromBody]string[] AltTitleIds)
+    {
+        MangaAltTitle[] ret = context.AltTitles.Where(a => AltTitleIds.Contains(a.AltTitleId)).ToArray();
+        return Ok(ret);
+    }
+    
+    [HttpGet("Mangas/WithTag/{Tag}")]
+    [ProducesResponseType<Manga[]>(Status200OK, "application/json")]
+    public IActionResult GetMangasWithTag(string Tag)
+    {
+        return Ok(context.Manga.Where(m => m.Tags.Contains(Tag)));
+    }
+}