package com.peachpasswords.sync

enum class GgwaveProtocol {
    AUDIBLE_NORMAL,
    AUDIBLE_FAST,
    AUDIBLE_FASTEST,
    ULTRASOUND_NORMAL,
    ULTRASOUND_FAST,
    ULTRASOUND_FASTEST,
    DT_NORMAL,
    DT_FAST,
    DT_FASTEST,
}

interface ChirpCodec {
    fun encode(payload: ByteArray): FloatArray
    fun decode(samples: FloatArray): ByteArray?
    fun free()
}

data class ChirpCodecOptions(
    val sampleRate: Int,
    val protocol: GgwaveProtocol = GgwaveProtocol.ULTRASOUND_FASTEST,
    val volumePercent: Int = 10,
)

typealias ChirpCodecFactory = suspend (ChirpCodecOptions) -> ChirpCodec

/**
 * Native ggwave binding placeholder.
 *
 * The browser source loads vendored JS/WASM at runtime. Android needs a
 * platform-specific audio bridge plus native codec binding, which is a
 * separate implementation step. The coordinator and tests inject their own
 * codec so the pairing protocol can still be exercised now.
 */
suspend fun createChirpCodec(opts: ChirpCodecOptions): ChirpCodec {
    throw UnsupportedOperationException(
        "Android ggwave codec is not yet implemented (sampleRate=${opts.sampleRate})",
    )
}