namespace MMDAL.DTO.Scheduling
{
    public enum DemandType
    {
        ProductionIndent   = 0,
        BatchPlan          = 1,
        ProcessGroup       = 2,
        WorkPlan           = 3,
        ReworkJob          = 4,
        AdhocCorrection    = 5,
        NpdTrial           = 6,
        NestingPlan        = 7
    }

    public class ExecutionUnit
    {
        public int        EuId                    { get; set; }
        public DemandType DemandType              { get; set; }
        public int        SourceDocumentId        { get; set; }
        public int        SourceDetailId          { get; set; }
        public int        ItemId                  { get; set; }
        public int        SkuId                   { get; set; }
        public int        RoutingVersionDetailId  { get; set; }
        public int        WorkCenterId            { get; set; }
        public int?       FixedMachineId          { get; set; }
        public int?       FixedPatternId          { get; set; }
        public decimal    Quantity                { get; set; }
        public int        DurationMinutes         { get; set; }
        // 0=InHouse 1=Subcontract 2=Either
        public byte       ExecutionMode           { get; set; }
        // 0=Yes (interruptible) 1=No (not interruptible) — matches IS* TINYINT convention
        public byte       IsInterruptible         { get; set; } = 1;
        public int        MinimumRunMinutes       { get; set; }
        public int        MaxWaitMinutes          { get; set; }
        // 0=Reform 1=CarryForward
        public byte       BatchContinuity         { get; set; }
        // 0=Yes (IS monitor-only) 1=No — matches IS* TINYINT convention
        public byte       IsMonitorOnly           { get; set; } = 1;
        // 0=Production 1=Rework 2=Trial
        public byte       PlanNature              { get; set; }
        public DateTime   EarliestStart           { get; set; }
        public DateTime   Deadline                { get; set; }
        public List<int>  PredecessorEuIds        { get; set; } = new();
        // Lower number = higher priority; 0 = RedCard (always scheduled first)
        public int        Priority                { get; set; }
        // Set by DependencyGraph after partial-dependency offset is applied
        public DateTime   ComputedEarliestStart   { get; set; }
        public string?    MonitorGroup            { get; set; }
        // 0=Yes (IS group output step) 1=No — matches IS* TINYINT convention
        public byte       IsGroupOutputStep       { get; set; } = 1;
        // 1=Machine 2=Pattern 3=Die 6=Subcontract 7=InternalTransfer — set for nesting plans
        public byte       ResourceLevel           { get; set; } = 1;
        // Batch grouping — populated by BatchEngine
        public string?    RootBatchNumber         { get; set; }
        public int        ProcessId               { get; set; }
        // Resolved schedule (set after SlotFinder commits)
        public DateTime?  ScheduledStart          { get; set; }
        public DateTime?  ScheduledEnd            { get; set; }
        // Duration origin — 0=RoutingLeadTime 1=ManualOverride 2=SubcontractLeadTime
        public byte       DurationSource          { get; set; }
        // Batch context — set by BatchGroup.ToMergedEU(); 1 = singleton
        public int           BatchItemCount          { get; set; } = 1;
        public List<int>     BatchedSourceDetailIds  { get; set; } = new();
        public List<decimal> BatchedItemQtys         { get; set; } = new();
        // From MUOM.DECIMALPLACES — used by SplitQty for UOM-aware rounding
        public int           QuantityDecimalPlaces   { get; set; } = 2;
        // 0=Yes (pattern required for this process) 1=No — from MPROCESS.ISPATTERNREQUIRED; default 1 = not required
        public byte          IsPatternRequired       { get; set; } = 1;
        // Number of parallel machines required — from MROUTINGVERSIONDETAIL.SPLITS; default 1 = single machine
        public byte          Splits                  { get; set; } = 1;
    }
}