using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Logging;

namespace StellaOps.Provcache.Api;

public static partial class ProvcacheEndpointExtensions
{
    /// <summary>
    /// GET /v1/provcache/{veriKey}
    /// </summary>
    private static async Task<IResult> GetByVeriKeyAsync(
        string veriKey,
        bool? bypassCache,
        IProvcacheService provcacheService,
        ILogger<ProvcacheApiEndpoints> logger,
        CancellationToken cancellationToken)
    {
        logger.LogDebug("GET /v1/provcache/{VeriKey}", veriKey);

        try
        {
            var result = await provcacheService.GetAsync(veriKey, bypassCache ?? false, cancellationToken);

            return result.Status switch
            {
                ProvcacheResultStatus.CacheHit => Results.Ok(new ProvcacheGetResponse
                {
                    VeriKey = result.Entry!.VeriKey,
                    Entry = result.Entry,
                    Source = result.Source,
                    ElapsedMs = result.ElapsedMs,
                    Status = "hit"
                }),
                ProvcacheResultStatus.Bypassed => Results.Ok(new ProvcacheGetResponse
                {
                    VeriKey = veriKey,
                    Entry = null,
                    Source = null,
                    ElapsedMs = result.ElapsedMs,
                    Status = "bypassed"
                }),
                ProvcacheResultStatus.Expired => Results.StatusCode(StatusCodes.Status410Gone),
                _ => Results.NoContent()
            };
        }
        catch (Exception ex)
        {
            logger.LogError(ex, "Error getting cache entry for VeriKey {VeriKey}", veriKey);
            return InternalError("Cache lookup failed");
        }
    }
}