using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using RobotNet10.RobotApp.Client.Shared.SLAM;
using RobotNet10.RobotApp.Shared;
using RobotNet10.RobotApp.SLAM;

namespace RobotNet10.RobotApp.Controllers;

/// <summary>
/// API Controller for map management operations
/// </summary>
[Route("api/[controller]")]
[ApiController]
[Authorize]
public class MapsController(ISLAMService slamService, ILogger<MapsController> logger) : ControllerBase
{
    /// <summary>
    /// Get map info by name
    /// </summary>
    /// <param name="mapName">Name of the map</param>
    /// <returns>MapInfoDto if found, NotFound otherwise</returns>
    [HttpGet("{mapName}")]
    public ActionResult<MapInfoDto> GetMapInfo(string mapName)
    {
        try
        {
            var mapInfo = slamService.GetMapInfo(mapName);
            if (mapInfo == null)
            {
                logger.LogWarning("MapsController: Map not found: {MapName}", mapName);
                return NotFound($"Map '{mapName}' not found");
            }

            return Ok(MapMapInfoToDto(mapInfo));
        }
        catch (Exception ex)
        {
            logger.LogError(ex, "MapsController: Failed to get map info: {MapName}", mapName);
            return StatusCode(500, "Failed to get map info");
        }
    }

    /// <summary>
    /// Get map image by name
    /// </summary>
    /// <param name="mapName">Name of the map</param>
    /// <returns>PNG image file</returns>
    [HttpGet("{mapName}/image")]
    public IActionResult GetMapImage(string mapName)
    {
        try
        {
            var imagePath = slamService.GetMapImagePath(mapName);
            if (imagePath == null)
            {
                logger.LogWarning("MapsController: Map image not found: {MapName}", mapName);
                return NotFound($"Map image for '{mapName}' not found");
            }

            var contentType = imagePath.EndsWith(".png", StringComparison.OrdinalIgnoreCase)
                ? "image/png"
                : "image/jpeg";

            var fileStream = new FileStream(imagePath, FileMode.Open, FileAccess.Read, FileShare.Read);
            return File(fileStream, contentType);
        }
        catch (Exception ex)
        {
            logger.LogError(ex, "MapsController: Failed to get map image: {MapName}", mapName);
            return StatusCode(500, "Failed to get map image");
        }
    }

    private static MapInfoDto MapMapInfoToDto(MapInfo mapInfo)
    {
        return new MapInfoDto
        {
            Name = mapInfo.Name,
            CreatedDate = mapInfo.CreatedDate,
            Resolution = mapInfo.Resolution,
            Width = mapInfo.Size.Width,
            Height = mapInfo.Size.Height,
            TrajectoryNodeCount = mapInfo.TrajectoryNodeCount,
            OriginX = mapInfo.Origin.Position.X,
            OriginY = mapInfo.Origin.Position.Y,
        };
    }
}