39 lines
1.1 KiB
C#
39 lines
1.1 KiB
C#
using ErsatzTV.Core.Domain;
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using ErsatzTV.Core.Interfaces.Scheduling;
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namespace ErsatzTV.Core.Scheduling;
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public class OrderedScheduleItemsEnumerator : IScheduleItemsEnumerator
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{
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private readonly List<ProgramScheduleItem> _sortedScheduleItems;
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public OrderedScheduleItemsEnumerator(
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IEnumerable<ProgramScheduleItem> scheduleItems,
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CollectionEnumeratorState state)
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{
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_sortedScheduleItems = scheduleItems.OrderBy(i => i.Index).ToList();
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State = new CollectionEnumeratorState { Seed = state.Seed };
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if (state.Index >= _sortedScheduleItems.Count)
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{
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state.Index = 0;
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state.Seed = 0;
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}
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while (State.Index < state.Index)
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{
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MoveNext();
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}
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}
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public CollectionEnumeratorState State { get; }
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public ProgramScheduleItem Current => _sortedScheduleItems[State.Index];
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public void MoveNext() => State.Index = (State.Index + 1) % _sortedScheduleItems.Count;
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public ProgramScheduleItem Peek(int offset) =>
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_sortedScheduleItems[(State.Index + offset) % _sortedScheduleItems.Count];
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}
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