tilt-shift-camera/app/src/main/java/no/naiv/tiltshift/util/HapticFeedback.kt

package no.naiv.tiltshift.util

import android.content.Context
import android.os.VibrationEffect
import android.os.Vibrator
import android.os.VibratorManager
import android.util.Log

/**
 * Provides haptic feedback for user interactions.
 * Gracefully degrades on devices without vibration hardware.
 */
class HapticFeedback(private val context: Context) {

    companion object {
        private const val TAG = "HapticFeedback"
    }

    private val vibrator: Vibrator? by lazy {
        val vibratorManager =
            context.getSystemService(Context.VIBRATOR_MANAGER_SERVICE) as? VibratorManager
        vibratorManager?.defaultVibrator
    }

    /**
     * Light tick for UI feedback (button press, slider change).
     */
    fun tick() {
        vibrateOrLog(VibrationEffect.createPredefined(VibrationEffect.EFFECT_TICK))
    }

    /**
     * Click feedback for confirmations.
     */
    fun click() {
        vibrateOrLog(VibrationEffect.createPredefined(VibrationEffect.EFFECT_CLICK))
    }

    /**
     * Heavy click for important actions (photo capture).
     */
    fun heavyClick() {
        vibrateOrLog(VibrationEffect.createPredefined(VibrationEffect.EFFECT_HEAVY_CLICK))
    }

    /**
     * Success feedback pattern.
     */
    fun success() {
        val timings = longArrayOf(0, 30, 50, 30)
        val amplitudes = intArrayOf(0, 100, 0, 200)
        vibrateOrLog(VibrationEffect.createWaveform(timings, amplitudes, -1))
    }

    /**
     * Error feedback pattern.
     */
    fun error() {
        val timings = longArrayOf(0, 50, 30, 50, 30, 50)
        val amplitudes = intArrayOf(0, 150, 0, 150, 0, 150)
        vibrateOrLog(VibrationEffect.createWaveform(timings, amplitudes, -1))
    }

    private fun vibrateOrLog(effect: VibrationEffect) {
        try {
            vibrator?.vibrate(effect)
        } catch (e: Exception) {
            Log.w(TAG, "Haptic feedback failed", e)
        }
    }
}