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;

[ApiVersion("1.0")]
public class LectureHallController(IMediator mediator) : BaseController
{
    /// <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("GetByCampus/{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
            }));
    }
}