using Entities;
using Entities.Exceptions;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Service.Contracts;
using Shared.DataTransferObjects;
using System.ComponentModel.Design;
using System.Diagnostics;

[ApiController]
[Route("api/likes")]
public class LikeController : ControllerBase
{
    private readonly IServiceManager _service;

    public LikeController(IServiceManager service)
    {
        _service = service;
    }


    [HttpGet("post/{postId}")]
    [Authorize]
    public async Task<IActionResult> GetLikesForPost(Guid postId)
    {
        var likes = await _service.LikeService.GetLikesAsync(postId, "post", trackChanges: false);
        return Ok(likes);
    }

    [HttpGet("comment/{commentId}")]
    [Authorize]
    public async Task<IActionResult> GetLikesForComment(Guid commentId)
    {
        var likes = await _service.LikeService.GetLikesAsync(commentId, "comment", trackChanges: false);

        return Ok(likes);
    }

    [HttpPost]
    [Authorize]
    public async Task<LikeDto> CreateLike([FromBody] LikeForCreationDto likeDto)
    {
        var userIdClaim = User.Claims.FirstOrDefault(c => c.Type == "UserId").Value;
        var displayName = _service.UserService.GetUserName(User);

        LikeDto like;
        if (likeDto.CommentId != null && likeDto.CommentId is Guid)
        {
            likeDto.PostId = null;
            Guid commentId = (Guid)likeDto.CommentId;
            like = await _service.LikeService.CreateLikeAsync(userIdClaim, displayName, likeDto);
            await _service.CommentService.UpdateLikeCount(commentId, increment: true, trackChanges: true);
            return like;
        }

        if (likeDto.PostId != null)
        {
            likeDto.CommentId = null;
            Guid postId = (Guid)likeDto.PostId;
            like = await _service.LikeService.CreateLikeAsync(userIdClaim, displayName, likeDto);
            await _service.PostService.UpdateLikeCount(postId, increment: true, trackChanges: true);
            return like;
        }
        else
        {
            return null;
        }

    }

    [HttpDelete("{likeId}")]
    public async Task<IActionResult> DeleteLike(Guid likeId)
    {
        try
        {
            await _service.LikeService.DeleteLikeAndUpdatePostAsync(likeId);
            return NoContent(); // Returns a 204 No Content response on successful deletion
        }
        catch (LikeNotFoundException ex)
        {
            return NotFound(ex.Message); // Returns a 404 Not Found if the like does not exist
        }
        catch (Exception ex)
        {
            // Log the exception details
            return StatusCode(500, "An error occurred while processing your request."); // Returns a 500 Internal Server Error for any other exceptions
        }
    }

}