66 lines
3.7 KiB
C#
66 lines
3.7 KiB
C#
 
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using RemSound.Core;
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namespace RemSound.App;
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/// <summary>
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/// The service's "unmute the machine and set volume to X% when the service starts" option
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/// (Additional service options; feature request 2026-07-26). Two timing modes, chosen by a list in
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/// the dialog: only the FIRST service start after each boot (the default — a mid-day manual
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/// restart then never blasts the volume back up while someone is using the machine), or EVERY
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/// service start. Boot identity comes from the system uptime clock, persisted in a marker file, so
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/// "first start after boot" survives same-boot service restarts and still re-fires after a reboot.
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/// </summary>
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internal static class StartupVolume
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{
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/// <summary>Two boot instants within this window are the SAME boot. Generous: the instant is
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/// computed from now-minus-uptime, which drifts a little between computations (timer
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/// granularity, clock adjustments); a real reboot separates instants by minutes at least.</summary>
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internal static readonly TimeSpan SameBootTolerance = TimeSpan.FromMinutes(2);
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/// <summary>When THIS boot began (UTC), from the monotonic uptime counter.</summary>
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public static DateTime CurrentBootUtc() => DateTime.UtcNow - TimeSpan.FromMilliseconds(Environment.TickCount64);
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/// <summary>Pure decision core, pinned by the self-test: apply when enabled, and — in boot-only
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/// mode — when the recorded marker belongs to a DIFFERENT boot (or there is no marker yet).</summary>
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internal static bool ShouldApply(bool enabled, bool bootOnly, DateTime? markerBootUtc, DateTime currentBootUtc)
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{
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if (!enabled) return false;
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if (!bootOnly) return true;
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if (markerBootUtc is null) return true;
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return (currentBootUtc - markerBootUtc.Value).Duration() > SameBootTolerance;
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}
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/// <summary>Called from the service's OnStart. Reads the option, decides, applies via the same
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/// endpoint-volume helper the remote-control commands use, and records the boot marker on a
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/// successful apply. Never throws — a volume hiccup must not stop the service starting.</summary>
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public static void ApplyIfConfigured(Action<string>? log)
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{
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try
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{
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var (enabled, percent, bootOnly) = ServiceStore.LoadStartupVolume();
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if (!enabled) return;
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var boot = CurrentBootUtc();
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if (!ShouldApply(enabled, bootOnly, ServiceStore.LoadStartupVolumeBootMarker(), boot))
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{
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log?.Invoke("service: startup volume skipped — already applied this boot (boot-only mode)");
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return;
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}
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var ok = SystemVolumeHelper.TrySetVolumeAndUnmute(percent);
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var outcome = ok
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? $"startup volume applied — default output set to {percent}% and unmuted ({(bootOnly ? "first start after boot" : "every service start")})"
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: "startup volume FAILED — could not reach the default output device (will retry on the next qualifying start)";
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log?.Invoke($"service: {outcome}");
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// Also into the always-on events log (not gated on the logging toggle): one line per
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// qualifying start, so "did it fire?" is answerable without turning full logging on.
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ServiceStore.AppendServiceEvent(outcome);
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// Marker only on success: a boot-time failure (audio stack not up yet) leaves the next
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// same-boot restart eligible to retry rather than silently never applying.
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if (ok) ServiceStore.SaveStartupVolumeBootMarker(boot);
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}
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catch (Exception ex)
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{
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log?.Invoke($"service: startup volume error {ex.GetType().Name}: {ex.Message}");
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}
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}
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}
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