using Microsoft.AspNetCore.Mvc;


/// <summary>
/// NEWS2 composite scoring: current score and paginated history per encounter.
/// </summary>
[ApiController]
[Route("api/v1/encounters/{encounterId:guid}/news2")]
[Produces("application/json")]
public class News2Controller : ControllerBase
{
    private readonly INews2Service _news2;

    public News2Controller(INews2Service news2) => _news2 = news2;

    /// <summary>
    /// Returns the latest NEWS2 score for an encounter, or 404 if no score has been computed.
    /// </summary>
    [HttpGet("current")]
    [ProducesResponseType(typeof(ApiResponse<News2Score>), StatusCodes.Status200OK)]
    [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
    public async Task<IActionResult> Current(Guid encounterId)
    {
        var score = await _news2.GetCurrentAsync(encounterId);
        if (score is null)
            return NotFound(ApiResponse<object>.Fail(404, "No NEWS2 score computed for this encounter.", "NO_NEWS2_SCORE"));
        return Ok(ApiResponse<News2Score>.Ok(score));
    }

    /// <summary>
    /// Returns cursor-paginated NEWS2 score history for an encounter.
    /// </summary>
    [HttpGet("history")]
    [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status200OK)]
    public async Task<IActionResult> History(
        Guid encounterId,
        [FromQuery] int limit = 20,
        [FromQuery] string? cursor = null)
    {
        var page = await _news2.GetHistoryAsync(encounterId, limit, cursor);
        return Ok(ApiResponse<object>.Ok(new
        {
            items = page.Items,
            nextCursor = page.NextCursor,
            hasMore = page.HasMore
        }));
    }
}