using MediatR;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Mirea.Api.DataAccess.Application.Cqrs.Professor.Queries.GetProfessorDetails;
using Mirea.Api.DataAccess.Application.Cqrs.Professor.Queries.GetProfessorList;
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 ProfessorController(IMediator mediator) : BaseControllerV1
{
    /// <summary>
    /// Retrieves a list of professors.
    /// </summary>
    /// <param name="page">The page number for pagination (optional).</param>
    /// <param name="pageSize">The page size for pagination (optional).</param>
    /// <returns>A list of professors.</returns>
    [HttpGet]
    [ProducesResponseType(StatusCodes.Status200OK)]
    [BadRequestResponse]
    public async Task<ActionResult<List<ProfessorResponse>>> Get([FromQuery] int? page, [FromQuery] int? pageSize)
    {
        var result = await mediator.Send(new GetProfessorListQuery()
        {
            Page = page,
            PageSize = pageSize
        });

        return Ok(result.Professors
            .Select(p => new ProfessorResponse()
            {
                Id = p.Id,
                Name = p.Name,
                AltName = p.AltName
            })
        );
    }

    /// <summary>
    /// Retrieves detailed information about a specific professor.
    /// </summary>
    /// <param name="id">The ID of the professor to retrieve.</param>
    /// <returns>Detailed information about the professor.</returns>
    [HttpGet("{id:int}")]
    [ProducesResponseType(StatusCodes.Status200OK)]
    [BadRequestResponse]
    [NotFoundResponse]
    public async Task<ActionResult<ProfessorResponse>> GetDetails(int id)
    {
        var result = await mediator.Send(new GetProfessorInfoQuery()
        {
            Id = id
        });

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