using EntitlementBLL.Auth;
using EntitlementBLL.Interfaces;
using EntitlementSL.Common;
using FastEndpoints;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.DTO.Framework.ResponseStandard;
using GB5Shared.FastEndPoint;
using ErrorResponse = GB5Shared.Resource.Response.ErrorResponse;
using static GB5Shared.GB5Constant.Constant;

namespace EntitlementSL.Endpoints.Subscription;

// Client-facing equivalent of GetSubscription — takes no ClientId parameter at all (unlike the
// admin endpoint), scoped structurally to the caller's OWN ClientId from verified JWT claims so
// there is nothing for a client to spoof. Any authenticated client user (admin or user tier) may
// view their own subscription — this is a read of their own data, not a commercial action, so no
// additional capability is required (mirrors ChangeRequest/GetMyRequests.cs's gating).
public class GetMySubscription : BaseEndpoint<GetMySubscription.Params, ResponseStandardDTO<object>>
{
    private const string ClientJwtSchemeName = "ClientJwtBearer";

    private readonly ISubscriptionService _SubscriptionService;

    public GetMySubscription(ISubscriptionService subscriptionService) => _SubscriptionService = subscriptionService;

    public override void Configure()
    {
        Get("/lic/Subscription.svc/GetMySubscription");
        AuthSchemes(ClientJwtSchemeName);
        Roles(ClientRoleCodes.ClientAdmin, ClientRoleCodes.ClientUser);
    }

    public record Params([property: FromHeader] string Login);

    protected override string? GetCacheKey(Params req, LoginDTO loginDTO)
    {
        var caller = ClientCallerContext.FromClaims(HttpContext.User.Claims);
        return KeyGenerator.KeyGeneration(caller.ClientId, EntityConstant.OBJECTENTITLEMENTSUBSCRIPTION, CacheKeyLevel.CLIENT_LEVEL, loginDTO);
    }

    protected override async Task<ResponseStandardDTO<object>> ExecuteAsync(Params req, LoginDTO loginDTO, CancellationToken ct)
    {
        var caller = ClientCallerContext.FromClaims(HttpContext.User.Claims);
        if (caller.ClientId <= 0)
            return await GB5Shared.ResponseStandard.Response.CreateErrorResponse<object>(
                ErrorResponse.AccessDeniedMessage, CacheKeyLevel.NOT_REQUIRED, loginDTO, statusCode: 403);

        var result = await _SubscriptionService.GetAsync(caller.ClientId, ct);
        return await GB5Shared.ResponseStandard.Response.CreateSuccessResponse(result, CacheKeyLevel.CLIENT_LEVEL, loginDTO);
    }
}