using MediatR;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Mirea.Api.DataAccess.Application.Cqrs.Faculty.Queries.GetFacultyDetails;
using Mirea.Api.DataAccess.Application.Cqrs.Faculty.Queries.GetFacultyList;
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 FacultyController(IMediator mediator) : BaseController
{
    /// <summary>
    /// Gets a paginated list of faculties.
    /// </summary>
    /// <param name="page">Page number. Start from 0.</param>
    /// <param name="pageSize">Number of items per page.</param>
    /// <returns>Paginated list of faculties.</returns>
    [HttpGet]
    [ProducesResponseType(StatusCodes.Status200OK)]
    [BadRequestResponse]
    public async Task<ActionResult<List<FacultyResponse>>> Get([FromQuery] int? page, [FromQuery] int? pageSize)
    {
        var result = await mediator.Send(new GetFacultyListQuery()
        {
            Page = page,
            PageSize = pageSize
        });

        return Ok(result.Faculties
            .Select(f => new FacultyResponse()
            {
                Id = f.Id,
                Name = f.Name,
                CampusId = f.CampusId
            })
        );
    }

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

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