25 lines
829 B
C#
25 lines
829 B
C#
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using YD_TrainingCompetition_Api.Competition;
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namespace YD_TrainingCompetition_Api.Services;
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// 单独的倒计时后台服务，每秒推动一次比赛会话状态。
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// 这样即使设备端没有持续上报时间，前端也能稳定看到倒计时变化。
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public sealed class CompetitionCountdownWorker : BackgroundService
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{
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private readonly ICompetitionSessionService _competition;
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public CompetitionCountdownWorker(ICompetitionSessionService competition)
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{
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_competition = competition;
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}
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protected override async Task ExecuteAsync(CancellationToken stoppingToken)
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{
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using var timer = new PeriodicTimer(TimeSpan.FromSeconds(1));
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while (await timer.WaitForNextTickAsync(stoppingToken))
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{
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await _competition.TickAsync(stoppingToken);
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}
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}
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}
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