using MediatR;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Mirea.Api.DataAccess.Application.Cqrs.LectureHall.Queries.GetLectureHallDetails;
using Mirea.Api.DataAccess.Application.Cqrs.LectureHall.Queries.GetLectureHallList;
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 LectureHallController(IMediator mediator) : BaseControllerV1
    {
        /// <summary>
        /// Retrieves a list of all lecture halls.
        /// </summary>
        /// <returns>A list of lecture halls.</returns>
        [HttpGet]
        [ProducesResponseType(StatusCodes.Status200OK)]
        public async Task<ActionResult<List<LectureHallResponse>>> Get()
        {
            var result = await mediator.Send(new GetLectureHallListQuery());

            return Ok(result.LectureHalls
                .Select(l => new LectureHallResponse()
                {
                    Id = l.Id,
                    Name = l.Name,
                    CampusId = l.CampusId
                })
            );
        }

        /// <summary>
        /// Retrieves details of a specific lecture hall by its ID.
        /// </summary>
        /// <param name="id">The ID of the lecture hall to retrieve.</param>
        /// <returns>The details of the specified lecture hall.</returns>
        [HttpGet("{id:int}")]
        [ProducesResponseType(StatusCodes.Status200OK)]
        [BadRequestResponse]
        [NotFoundResponse]
        public async Task<ActionResult<LectureHallDetailsResponse>> GetDetails(int id)
        {
            var result = await mediator.Send(new GetLectureHallInfoQuery()
            {
                Id = id
            });

            return Ok(new LectureHallDetailsResponse()
            {
                Id = result.Id,
                Name = result.Name,
                CampusId = result.CampusId,
                CampusCode = result.CampusCode,
                CampusName = result.CampusName
            });
        }

        /// <summary>
        /// Retrieves a list of lecture halls by campus ID.
        /// </summary>
        /// <param name="id">The ID of the campus.</param>
        /// <returns>A list of lecture halls in the specified campus.</returns>
        [HttpGet("{id:int}")]
        [ProducesResponseType(StatusCodes.Status200OK)]
        [BadRequestResponse]
        [NotFoundResponse]
        public async Task<ActionResult<List<LectureHallResponse>>> GetByCampus(int id)
        {
            var result = await mediator.Send(new GetLectureHallListQuery());

            return Ok(result.LectureHalls.Where(l => l.CampusId == id)
                .Select(l => new LectureHallResponse()
                {
                    Id = l.Id,
                    Name = l.Name,
                    CampusId = l.CampusId
                }));
        }
    }
}