source: ChapterX.API/Controllers/ChaptersController.cs

using ChapterX.Application.Chapter.Commands;
using ChapterX.Application.Chapter.Queries;
using ChapterX.Domain.Repositories;
using MediatR;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
using System.Security.Claims;

namespace ChapterX.API.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class ChaptersController : ControllerBase
    {
        private readonly IMediator _mediator;
        private readonly IChapterRepository _chapterRepository;
        private readonly ILogger<ChaptersController> _logger;

        public ChaptersController(IMediator mediator, IChapterRepository chapterRepository, ILogger<ChaptersController> logger)
        {
            _mediator = mediator;
            _chapterRepository = chapterRepository;
            _logger = logger;
        }

        [HttpGet]
        [AllowAnonymous]
        public async Task<ActionResult> GetAll()
        {
            _logger.LogInformation("Fetching all chapters");
            var response = await _mediator.Send(new GetAllRequest());
            return Ok(response);
        }

        [HttpGet("{id:int}")]
        [AllowAnonymous]
        public async Task<ActionResult> GetById(int id)
        {
            _logger.LogInformation("Fetching chapter with ID: {ChapterId}", id);
            var response = await _mediator.Send(new GetRequest(id));
            return Ok(response);
        }

        [HttpPatch("{id:int}/view")]
        [AllowAnonymous]
        public async Task<ActionResult> IncrementView(int id)
        {
            await _chapterRepository.IncrementViewCountAsync(id);
            return NoContent();
        }

        [HttpPost]
        [Authorize]
        public async Task<ActionResult> Add([FromBody] AddRequest request)
        {
            _logger.LogInformation("Adding a new chapter with Number: {Number}", request.Number);
            var response = await _mediator.Send(request);
            return Ok(response);
        }

        [HttpPut("{id:int}")]
        [Authorize]
        public async Task<ActionResult> Update(int id, [FromBody] UpdateRequest request)
        {
            _logger.LogInformation("Updating chapter with ID: {ChapterId}", id);
            if (id != request.Id)
            {
                return BadRequest("Route ID and body ID must match.");
            }

            var callerId = int.Parse(User.FindFirstValue(ClaimTypes.NameIdentifier)!);
            var response = await _mediator.Send(request with { CallerId = callerId });
            return Ok(response);
        }

        [HttpDelete("{id:int}")]
        [Authorize]
        public async Task<ActionResult> Delete(int id)
        {
            _logger.LogInformation("Deleting chapter with ID: {ChapterId}", id);
            var callerId = int.Parse(User.FindFirstValue(ClaimTypes.NameIdentifier)!);
            var response = await _mediator.Send(new DeleteRequest(id, callerId));
            return Ok(response);
        }
    }
}