// build.gradle.kts
dependencies {
    implementation("dev.kotlinds:fluidsynth-kmp:1.1.0")
}

val config = AudioConfig(
    sampleRate = 44100,           // output sample rate in Hz
    interpolation = Interpolation.HIGH, // resampling quality (FAST, NORMAL, HIGH)
    periodSize = 64,              // audio frames per buffer period (lower = less latency)
    periods = 2,                  // number of buffer periods
)

val player = FluidSynthPlayer(AudioConfig(sampleRate = 48000, interpolation = Interpolation.HIGH))

// Load a SoundFont (.sf2) from a file path
val sfontId = player.loadSoundFont("/path/to/soundfont.sf2")

// Select a program (instrument) on channel 0
// General MIDI program 0 = Acoustic Grand Piano
player.programChange(channel = 0, program = 0)

// Play middle C (MIDI note 60) at velocity 100
player.noteOn(channel = 0, key = 60, velocity = 100)

// ... later, release the note
player.noteOff(channel = 0, key = 60)

// Adjust master volume (0.0 to 10.0, default 0.2)
player.setGain(0.5f)

// Change interpolation quality at runtime
player.setInterpolation(Interpolation.FAST)

// Configure reverb (roomSize, damping, width, level)
player.setReverb(roomSize = 0.6, damping = 0.5, width = 0.5, level = 0.3)

// Configure chorus (voiceCount, level, speed, depth)
player.setChorus(voiceCount = 3, level = 2.0, speed = 0.3, depth = 8.0)

// Render audio offline (interleaved stereo, frames * 2 floats)
val buffer = player.renderFloat(frames = 1024)

// Always close when done to free native resources
player.close()

val player = MidiFilePlayer(
    soundFontPath = "/path/to/soundfont.sf2",
    midiPath = "/path/to/song.mid",
    config = AudioConfig(sampleRate = 44100, interpolation = Interpolation.HIGH),
)

// Play with a completion handler
player.play {
    println("Playback finished")
    player.close()
}

// Pause and resume
player.pause()
player.play()  // resumes from where it was paused

// Seek to a position
player.seekTo(1000L)

println("Duration: ${player.durationTicks} ticks")
println("Playing: ${player.isPlaying}")

// In your Activity or ViewModel
fun copyAssetToFile(context: Context, assetName: String): String {
    val file = File(context.filesDir, assetName)
    if (!file.exists()) {
        context.assets.open(assetName).use { input ->
            file.outputStream().use { output -> input.copyTo(output) }
        }
    }
    return file.absolutePath
}

val sfPath = copyAssetToFile(context, "GeneralUser.sf2")
val midiPath = copyAssetToFile(context, "song.mid")

val player = MidiFilePlayer(sfPath, midiPath)
player.play()