1 files changed, 63 insertions, 0 deletions
diff --git a/backend/Elements.Backend/Controllers/ElementController.cs b/backend/Elements.Backend/Controllers/ElementController.cs
new file mode 100644
index 0000000..890f614
--- /dev/null
+++ b/backend/Elements.Backend/Controllers/ElementController.cs
@@ -0,0 +1,63 @@
+using System.Buffers.Text;
+using System.Text.Json;
+using Elements.Data;
+using Elements.Data.Models;
+using Microsoft.AspNetCore.Http.HttpResults;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+
+namespace Elements.Backend.Controllers;
+
+[ApiController]
+[Route("[controller]/[action]")]
+public class ElementController : ControllerBase
+{
+    private readonly ApplicationDbContext _dbContext;
+
+    public ElementController(ApplicationDbContext dbContext)
+    {
+        _dbContext = dbContext;
+    }
+
+    [Route("/element/{id:int}")]
+    [HttpGet]
+    public async Task<IActionResult> GetElement(int id)
+    {
+        Element? element = await _dbContext.Elements
+            .Include(e => e.User)
+            .FirstOrDefaultAsync(e => e.Id == id);
+        if (element == null)
+            return NotFound();
+
+        var response = new
+        {
+            Id = element.Id,
+            Name = element.Name,
+            CreatorName = element.User.Name,
+            State = element.State,
+            Icon = Convert.ToBase64String(element.IconPng)
+        };
+
+        var serializeOptions = new JsonSerializerOptions { PropertyNamingPolicy = JsonNamingPolicy.CamelCase };
+        return Ok(JsonSerializer.Serialize(response, serializeOptions));
+    }
+
+    [Route("/element/combine")]
+    [HttpGet]
+    public async Task<IActionResult> GetByCombination(int firstElementId, int secondElementId)
+    {
+        bool firstExists = await _dbContext.Elements.AnyAsync(e => e.Id == firstElementId);
+        bool secondExists = await _dbContext.Elements.AnyAsync(e => e.Id == secondElementId);
+        if (!firstExists || !secondExists)
+            return BadRequest();
+
+        Recipe? recipe = await _dbContext.Recipes.Include(r => r.Result).FirstOrDefaultAsync(r =>
+            (r.FirstIngredient.Id == firstElementId && r.SecondIngredient.Id == secondElementId) ||
+            (r.FirstIngredient.Id == secondElementId && r.SecondIngredient.Id == firstElementId));
+        if (recipe == null)
+            return NotFound();
+
+        var serializeOptions = new JsonSerializerOptions { PropertyNamingPolicy = JsonNamingPolicy.CamelCase };
+        return Ok(JsonSerializer.Serialize(recipe.Result, serializeOptions));
+    }
+}
+\ No newline at end of file