36 lines
1.0 KiB
Kotlin
36 lines
1.0 KiB
Kotlin
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package com.hawhamburg.micr0bu.service
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import kotlinx.coroutines.flow.MutableStateFlow
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import kotlinx.coroutines.flow.StateFlow
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import kotlinx.coroutines.flow.asStateFlow
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/**
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* Process-level singleton that bridges [TripRecordingService] (writes) and
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* [TripRecordingViewModel] (reads) without requiring a bound service.
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*
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* The service updates [state] on every relevant change; the ViewModel collects
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* it as a cold StateFlow.
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*/
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object TripServiceBus {
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data class State(
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val isRecording: Boolean = false,
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val currentTripId: Long = -1L,
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val elapsedSeconds: Long = 0L,
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val currentSpeedMs: Float = 0f,
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)
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private val _state = MutableStateFlow(State())
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val state: StateFlow<State> = _state.asStateFlow()
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/** Called exclusively from [TripRecordingService]. */
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internal fun update(transform: State.() -> State) {
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_state.value = _state.value.transform()
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}
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/** Resets to idle — called when recording stops. */
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internal fun reset() {
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_state.value = State()
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}
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}
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