package org.terst.nav.settings

import org.junit.Assert.*
import org.junit.Before
import org.junit.Test

class FeatureFlagsTest {

    private lateinit var flags: InMemoryFeatureFlags

    @Before
    fun setup() {
        flags = InMemoryFeatureFlags()
    }

    @Test
    fun `all sources default to disabled`() {
        for (source in HardwareSource.values()) {
            assertFalse("Expected $source to be disabled by default", flags.isEnabled(source))
        }
    }

    @Test
    fun `setEnabled true enables source`() {
        flags.setEnabled(HardwareSource.AIS_RECEIVER, true)
        assertTrue(flags.isEnabled(HardwareSource.AIS_RECEIVER))
    }

    @Test
    fun `setEnabled false disables source`() {
        flags.setEnabled(HardwareSource.AIS_RECEIVER, true)
        flags.setEnabled(HardwareSource.AIS_RECEIVER, false)
        assertFalse(flags.isEnabled(HardwareSource.AIS_RECEIVER))
    }

    @Test
    fun `toggle flips from false to true`() {
        val result = flags.toggle(HardwareSource.NMEA_INSTRUMENTS)
        assertTrue(result)
        assertTrue(flags.isEnabled(HardwareSource.NMEA_INSTRUMENTS))
    }

    @Test
    fun `toggle flips from true to false`() {
        flags.setEnabled(HardwareSource.NMEA_INSTRUMENTS, true)
        val result = flags.toggle(HardwareSource.NMEA_INSTRUMENTS)
        assertFalse(result)
        assertFalse(flags.isEnabled(HardwareSource.NMEA_INSTRUMENTS))
    }

    @Test
    fun `sources are independent`() {
        flags.setEnabled(HardwareSource.AIS_RECEIVER, true)
        assertFalse(flags.isEnabled(HardwareSource.NMEA_INSTRUMENTS))
    }

    @Test
    fun `toggle returns new state`() {
        assertFalse(flags.toggle(HardwareSource.AIS_RECEIVER).also { assertTrue(it) } == false)
    }
}