using MediatR;
using Microsoft.AspNetCore.Mvc;
using ColaFlow.Modules.ProjectManagement.Application.DTOs;
using ColaFlow.Modules.ProjectManagement.Application.Commands.CreateProject;
using ColaFlow.Modules.ProjectManagement.Application.Queries.GetProjectById;
using ColaFlow.Modules.ProjectManagement.Application.Queries.GetProjects;

namespace ColaFlow.API.Controllers;

/// <summary>
/// Projects API Controller
/// </summary>
[ApiController]
[Route("api/v1/[controller]")]
public class ProjectsController : ControllerBase
{
    private readonly IMediator _mediator;

    public ProjectsController(IMediator mediator)
    {
        _mediator = mediator ?? throw new ArgumentNullException(nameof(mediator));
    }

    /// <summary>
    /// Get all projects
    /// </summary>
    [HttpGet]
    [ProducesResponseType(typeof(List<ProjectDto>), StatusCodes.Status200OK)]
    public async Task<IActionResult> GetProjects(CancellationToken cancellationToken = default)
    {
        var query = new GetProjectsQuery();
        var result = await _mediator.Send(query, cancellationToken);
        return Ok(result);
    }

    /// <summary>
    /// Get project by ID
    /// </summary>
    [HttpGet("{id:guid}")]
    [ProducesResponseType(typeof(ProjectDto), StatusCodes.Status200OK)]
    [ProducesResponseType(StatusCodes.Status404NotFound)]
    public async Task<IActionResult> GetProject(Guid id, CancellationToken cancellationToken = default)
    {
        var query = new GetProjectByIdQuery(id);
        var result = await _mediator.Send(query, cancellationToken);
        return Ok(result);
    }

    /// <summary>
    /// Create a new project
    /// </summary>
    [HttpPost]
    [ProducesResponseType(typeof(ProjectDto), StatusCodes.Status201Created)]
    [ProducesResponseType(StatusCodes.Status400BadRequest)]
    public async Task<IActionResult> CreateProject(
        [FromBody] CreateProjectCommand command,
        CancellationToken cancellationToken = default)
    {
        var result = await _mediator.Send(command, cancellationToken);
        return CreatedAtAction(nameof(GetProject), new { id = result.Id }, result);
    }
}