using HomeLibrary.Api.Extensions;
using HomeLibrary.Api.Repositories.Contracts;
using HomeLibrary.Models.Dtos;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;

namespace HomeLibrary.Api.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class BookController : ControllerBase
    {
        private readonly IBookRepository bookRepository;

        public BookController(IBookRepository bookRepository)
        {
            this.bookRepository = bookRepository;
        }

        [HttpGet]
        public async Task<ActionResult<IEnumerable<CompleteBookDto>>> GetBooks()
        {
            try
            {
                var books = await this.bookRepository.GetBooks();
                var authors = await this.bookRepository.GetAuthors();

                if(books == null || authors == null)
                {
                    return NotFound();
                }
                else
                {
                    var completeBookDtos = books.ConvertToDto(authors);
                    return Ok(completeBookDtos);
                }
            }
            catch (Exception)
            {
                return StatusCode(StatusCodes.Status500InternalServerError, "Error retrieving data from the database.");
                
            }
        }

        [HttpGet("GetBooksByAuthorId")]
        public async Task<ActionResult<IEnumerable<BookDto>>> GetBooksByAuthor(int authorId)
        {
            try
            {
                var books = await this.bookRepository.GetBooksByAuthor(authorId);

                if(books == null)
                {
                    return NotFound();
                }
                else
                {
                    var bookDtos = books.ConvertToDto();
                    return Ok(bookDtos);
                }
            }
            catch (Exception)
            {
                return StatusCode(StatusCodes.Status500InternalServerError, "Error retrieving data from the database.");
            }
        }

        [HttpGet("GetBooksByAuthorName")]
        public async Task<ActionResult<IEnumerable<BookDto>>> GetBooksByAuthor(string authorName)
        {
            try
            {
                var books = await this.bookRepository.GetBooksByAuthor(authorName);

                if (books == null)
                {
                    return NotFound();
                }
                else
                {
                    var bookDtos = books.ConvertToDto();
                    return Ok(bookDtos);
                }
            }
            catch (Exception)
            {
                return StatusCode(StatusCodes.Status500InternalServerError, "Error retrieving data from the database.");
            }
        }
    }
}