37 lines
1.2 KiB
C#
37 lines
1.2 KiB
C#
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using w4c_workflows.Models;
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namespace w4c_workflows.Services.Triggers;
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/// <summary>
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/// Pure due-check for scheduled triggers. Extracted from the scheduler so the
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/// cron/interval timing rules are unit-testable without Redis/Postgres.
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/// </summary>
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public static class TriggerDue
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{
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/// <summary>
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/// Whether a cron/interval trigger should fire now. A workflow with no
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/// recorded last fire fires once on first discovery (the scheduler's initial
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/// pass), then again when its schedule next elapses.
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/// </summary>
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public static bool IsDue(TriggerSpec spec, DateTimeOffset? lastFire, DateTimeOffset now)
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{
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if (lastFire == null)
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return true;
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if (spec.Type == TriggerType.Interval)
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{
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var interval = spec.Interval ?? TimeSpan.Zero;
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return interval > TimeSpan.Zero && lastFire.Value + interval <= now;
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}
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if (spec.Type == TriggerType.Cron
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&& CronExpression.TryParse(spec.Cron, out var cron, out _))
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{
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var next = cron!.GetNextOccurrence(lastFire.Value);
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return next.HasValue && next.Value <= now;
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}
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return false;
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}
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}
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