NewsArchival/NewsArchival.Api/Controllers/ArticlesController.cs

using Microsoft.AspNetCore.Mvc;
using LexWells.Infrastructure.Common.Interfaces;
using Microsoft.EntityFrameworkCore;
using NewsArchival.Api.Data;
using NewsArchival.Core.Models;

namespace NewsArchival.Api.Controllers;

[ApiController]
[Route("api/[controller]")]
public class ArticlesController(AppDbContext db, ICacheService cache) : ControllerBase
{
    [HttpPost]
    public async Task<IActionResult> PostArticle([FromBody] Article article)
    {
        if (!ModelState.IsValid) return BadRequest(ModelState);

        db.Articles.Add(article);
        await db.SaveChangesAsync();

        await cache.RemoveAsync($"{article.Category.ToLower()}:all_articles");
        
        return CreatedAtAction(
            nameof(GetArticles),
            new { hub = article.Category.ToLower() },
            article);
    }

    [HttpGet("{hub}")]
    public async Task<IActionResult> GetArticles(string hub)
    {
        var cacheKey = $"{hub.ToLower()}:all_articles";
        
        var articles = await cache.GetAsync<List<Article>>(cacheKey);

        if (articles == null)
        {
            articles = await db.Articles
                .Where(x => x.Category == hub)
                .OrderByDescending(a => a.CreatedAt)
                .ToListAsync();
            
            await cache.SetAsync(cacheKey, articles, TimeSpan.FromHours(1));
        }

        return Ok(articles);
    }
}