using GB5Shared.DTO.Framework.Login;
using MMDAL.DTO.Scheduling;

namespace MMBLL.Scheduling.Engine
{
    public interface ICalendarService
    {
        // Batch-loads all shift patterns for the given work centers and pre-populates the
        // CalendarCache inside context. Call once before the EU scheduling loop to eliminate
        // per-day DB calls. Cache misses during the loop fall back to BuildDayWindowsAsync.
        Task PrePopulateCalendarCacheAsync(
            IEnumerable<int> workCenterIds, DateTime horizonFrom, DateTime horizonTo,
            SchedulingContext context, LoginDTO login, CancellationToken ct);

        // Returns the contiguous working time windows for a machine on the given date range,
        // with planned downtime (TTASK TASKNATURE=2) and breakdown calls (TCALL) already subtracted.
        // Results per (WorkCenterId, Date) are cached inside SchedulingContext for the run lifetime.
        Task<IReadOnlyList<TimeWindow>> GetWorkingWindowsAsync(
            int machineId, int workCenterId,
            DateTime from, DateTime to,
            SchedulingContext context,
            LoginDTO login, CancellationToken ct);
    }
}