using GB5Shared.DTO.Framework.Login;
using GB5Shared.DTO.Report;
using GB5Shared.Export.Pivot;

namespace GB5Shared.Export
{
    public interface IReportExport
    {
        // --- Original overloads: data is fetched internally via ReportURICalling ---
        Task<object> ExcelExport(ReportCallingDTO reportCallingDTO, LoginDTO loginDTO, CancellationToken cancellationToken);
        Task<object> CSVExport(ReportCallingDTO reportCallingDTO, LoginDTO loginDTO, CancellationToken cancellationToken);
        Task<string> JsonReport(ReportCallingDTO reportCallingDTO, LoginDTO loginDTO, CancellationToken cancellationToken);
        Task<object> PdfExport(ReportCallingDTO reportCallingDTO, LoginDTO loginDTO, CancellationToken cancellationToken);
        Task<object> PdfNativeExport(ReportCallingDTO reportCallingDTO, LoginDTO loginDTO, CancellationToken cancellationToken);

        // --- Pre-fetched data overloads: caller supplies rows, no internal re-fetch ---
        Task<object> ExcelExport(ReportCallingDTO reportCallingDTO, LoginDTO loginDTO, IAsyncEnumerable<Dictionary<string, object?>> data, CancellationToken cancellationToken);
        Task<object> CSVExport(ReportCallingDTO reportCallingDTO, LoginDTO loginDTO, IAsyncEnumerable<Dictionary<string, object?>> data, CancellationToken cancellationToken);
        Task<string> JsonReport(ReportCallingDTO reportCallingDTO, LoginDTO loginDTO, IAsyncEnumerable<Dictionary<string, object?>> data, CancellationToken cancellationToken);
        Task<object> PdfExport(ReportCallingDTO reportCallingDTO, LoginDTO loginDTO, IAsyncEnumerable<Dictionary<string, object?>> data, CancellationToken cancellationToken);
        Task<object> PdfNativeExport(ReportCallingDTO reportCallingDTO, LoginDTO loginDTO, IAsyncEnumerable<Dictionary<string, object?>> data, CancellationToken cancellationToken);

        Task<ReportFormatDTO> GetReportFormat(int reportFormatId, LoginDTO loginDTO);
        Task<ReportDTO> GetReport(int reportId, LoginDTO loginDTO);
        Task<List<ReportViewDTO>> GetReportView(int reportViewId, LoginDTO loginDTO);
        Task<List<ReportStandardDTO>> GetStandardFields(string ouId, LoginDTO loginDTO);
        Task<List<ReportViewFieldsDTO>> GetReportViewField(int reportViewId, int fieldIsDisplay, LoginDTO loginDTO);
        Task<ReportViewMetaDTO> GetReportViewMeta(int reportViewId, LoginDTO loginDTO, CancellationToken ct);
        Task<IEnumerable<PivotFieldConfigDTO>> GetPivotFieldConfig(int reportViewId, LoginDTO loginDTO, CancellationToken ct);

        /// <summary>
        /// Single dispatch entry-point for all export formats.
        /// Adding a new format only requires changes inside <see cref="ReportExport"/> — never in endpoint base classes.
        /// NdJsonStream (code 6) is handled at the endpoint level and must NOT be passed here.
        /// </summary>
        Task<object> ExportAsync(
            int formatCode,
            ReportCallingDTO reportCallingDTO,
            LoginDTO loginDTO,
            IAsyncEnumerable<Dictionary<string, object?>> rows,
            CancellationToken ct);
    }
}