Jason DoveandGitHub
6d147de2f3
* add chapter statistics and new filler options * refactor playout builder * more refactor prep for filler * rewrite schedulers * refactor collectionkey * add tail filler kind * migrate tail filler to filler preset * optionally show filler * fix playout detail row count * remove duration tail filler options * implement tail and fallback in flood scheduler * implement tail and fallback in one scheduler * implement tail and fallback in multiple scheduler * implement looping fallback filler * more duration tests * start to add post-roll filler to flood * rework playoutitem filler tagging * rework scheduler logging * calculate whether configured filler will fit * implement pre-roll and post-roll duration and count filler * improve duration filler calculation * add minutes to search index * update channel guide to work with new filler * add mid-roll filler * don't clone enumerators for filler calculations * support pre-roll and post-roll pad filler * implement mid-roll pad filler * allow clearing filler selections in schedule editor * fix tests * filler config validation * use consistent time zone for tests
45 lines
1.3 KiB
C#
45 lines
1.3 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using ErsatzTV.Core.Domain;
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using ErsatzTV.Core.Interfaces.Scheduling;
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using LanguageExt;
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using static LanguageExt.Prelude;
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namespace ErsatzTV.Core.Scheduling
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{
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public class RandomizedMediaCollectionEnumerator : IMediaCollectionEnumerator
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{
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private readonly IList<MediaItem> _mediaItems;
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private readonly Random _random;
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private int _index;
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public RandomizedMediaCollectionEnumerator(IList<MediaItem> mediaItems, CollectionEnumeratorState state)
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{
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_mediaItems = mediaItems;
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_random = new Random(state.Seed);
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State = new CollectionEnumeratorState { Seed = state.Seed };
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// we want to move at least once so we start with a random item and not the first
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// because _index defaults to 0
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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 Option<MediaItem> Current => _mediaItems.Any() ? _mediaItems[_index] : None;
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public void MoveNext()
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{
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_index = _random.Next() % _mediaItems.Count;
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State.Index++;
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}
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public Option<MediaItem> Peek(int offset) =>
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throw new NotSupportedException();
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}
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}
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