using MediatR;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Mirea.Api.DataAccess.Application.Cqrs.Discipline.Queries.GetDisciplineDetails;
using Mirea.Api.DataAccess.Application.Cqrs.Discipline.Queries.GetDisciplineList;
using Mirea.Api.Dto.Responses;
using Mirea.Api.Endpoint.Common.Attributes;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace Mirea.Api.Endpoint.Controllers.V1
{
    public class DisciplineController(IMediator mediator) : BaseControllerV1
    {
        /// <summary>
        /// Gets a paginated list of disciplines.
        /// </summary>
        /// <param name="page">Page number. Start from 0.</param>
        /// <param name="pageSize">Number of items per page.</param>
        /// <returns>Paginated list of disciplines.</returns>
        [HttpGet]
        [ProducesResponseType(StatusCodes.Status200OK)]
        [BadRequestResponse]
        public async Task<ActionResult<List<DisciplineResponse>>> Get([FromQuery] int? page, [FromQuery] int? pageSize)
        {
            var result = await mediator.Send(new GetDisciplineListQuery()
            {
                Page = page,
                PageSize = pageSize
            });

            return Ok(result.Disciplines
                .Select(d => new DisciplineResponse()
                {
                    Id = d.Id,
                    Name = d.Name
                })
            );
        }

        /// <summary>
        /// Gets details of a specific discipline by ID.
        /// </summary>
        /// <param name="id">Discipline ID.</param>
        /// <returns>Details of the specified discipline.</returns>
        [HttpGet("{id:int}")]
        [ProducesResponseType(StatusCodes.Status200OK)]
        [BadRequestResponse]
        [NotFoundResponse]
        public async Task<ActionResult<DisciplineResponse>> GetDetails(int id)
        {
            var result = await mediator.Send(new GetDisciplineInfoQuery()
            {
                Id = id
            });

            return Ok(new DisciplineResponse()
            {
                Id = result.Id,
                Name = result.Name
            });
        }
    }
}