/* This software is licensed by the MIT License, see LICENSE file */
/*                           Copyright © 2024-2025 Gregory Lirent */

using Microsoft.AspNetCore.Mvc;
using WebmrAPI.Models;
using WebmrAPI.Services;

namespace WebmrAPI.Controllers
{
    [ApiController]
    [Route("api/v1/[controller]")]
    [System.Runtime.Versioning.SupportedOSPlatform("windows")]
    public class WindowsController : ControllerBase
    {
        private readonly ProcessMonitor _monitor;
        private readonly ILogger<ProcessController> _logger;

        public WindowsController(ProcessMonitor monitor, ILogger<ProcessController> logger)
        {
            _monitor = monitor;
            _logger = logger;
        }

        [HttpGet]
        [ProducesResponseType(StatusCodes.Status200OK, Type = typeof(IEnumerable<WindowInfo>))]
        [ProducesResponseType(StatusCodes.Status400BadRequest)]
        [ProducesResponseType(StatusCodes.Status500InternalServerError)]
        public IActionResult GetWindows(
            [FromQuery] bool pretty = false,
            [FromQuery] string sortBy = "",
            [FromQuery] bool desc = false,
            [FromQuery] int limit = 0,
            [FromQuery] int offset = 0,
            [FromQuery] string search = ""
        )
        {
            try
            {
                var data = _monitor.GetBufferedWindows();

                if (data != null && !String.IsNullOrEmpty(search))
                {
                    data = data.Where(p => p.Title != null && p.Title.ToLowerInvariant().Contains(search.ToLowerInvariant()));
                }

                if (data != null && !String.IsNullOrEmpty(sortBy))
                {
                    sortBy = sortBy.ToLowerInvariant();
                    switch (sortBy)
                    {
                        case "pid": data = ProcessController.Sort(data, p => p.PID, desc); break;
                        case "title": data = ProcessController.Sort(data, p => p.Title, desc); break;
                        case "threadid": data = ProcessController.Sort(data, p => p.ThreadId, desc); break;
                        case "id": data = ProcessController.Sort(data, p => p.Id, desc); break;
                        default: return StatusCode(StatusCodes.Status400BadRequest, $"Unexpected search filter {sortBy}.");
                    }
                }

                return Content(ProcessController.GetFormattedJson(ProcessController.Paginate(data, limit, offset), pretty), "application/json");
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "An error occurred when getting the list of windows");
                return StatusCode(StatusCodes.Status500InternalServerError, "An internal server error occurred when receiving windows.");
            }
        }
    }
}