using CMSBLL.DataSourceProxy;
using FastEndpoints;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.DTO.Framework.ResponseStandard;
using GB5Shared.FastEndPoint;
using static GB5Shared.GB5Constant.Constant;

namespace CMSSL.Endpoints.Cms;

// Client-side-fetch proxy (Site/Page platform Phase 12): the ONLY way a ClientSideFetch-bound
// block's FE island ever reaches an external DataSource. It never talks to the third-party
// endpoint directly and never sees its Vault secret — this endpoint resolves Domain -> Site/
// TenantId exactly like GetSiteDocument (never trusting a client-supplied TenantId), then
// delegates to the same fetch+auth+mapping+cache logic the server-merge path uses.
public class GetBlockData : BaseEndpoint<GetBlockData.Parameters, object>
{
    private readonly IDataSourceProxyBLL _proxyBll;
    public GetBlockData(IDataSourceProxyBLL proxyBll) => _proxyBll = proxyBll;

    public override void Configure() { Get("/CMS/GetBlockData"); AllowAnonymous(); }

    public record Parameters(
        [property: QueryParam] string Domain,
        [property: QueryParam] string DataSourceCode,
        [property: QueryParam] string? ParamsJson,
        [property: FromHeader] string Login
    );

    protected override async Task<ResponseStandardDTO<object>> ExecuteAsync(Parameters req, LoginDTO login, CancellationToken ct)
    {
        try
        {
            var result = await _proxyBll.ResolveDataForDomainAsync(req.Domain, req.DataSourceCode, req.ParamsJson, login, ct);
            if (result is null)
                return await GB5Shared.ResponseStandard.Response.CreateExceptionError<string>(
                    new Exception("Site not found."), CacheKeyLevel.NOT_REQUIRED, login, "Site not found.", 404);

            return await GB5Shared.ResponseStandard.Response.CreateSuccessResponse(result, CacheKeyLevel.NOT_REQUIRED, login);
        }
        catch (Exception ex)
        {
            return await GB5Shared.ResponseStandard.Response.CreateExceptionError<string>(ex, CacheKeyLevel.NOT_REQUIRED, login, ex.Message, 500);
        }
    }
}