#pragma once

#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>

#define PV_PROTOCOL_VERSION 1
#define PV_PCM_CHUNK_MAX 16384U
#define PV_DOWNSTREAM_MAX 65536U

typedef enum {
    PV_CONNECTING,
    PV_STREAMING,
    PV_RECONNECTING,
    PV_FAILED,
} PvState;

typedef struct {
    char host[64];
    char path[96];
    uint16_t port;
} PvEndpoint;

bool pv_parse_endpoint(const char* url, PvEndpoint* endpoint);
bool pv_make_start_json(char* out, size_t out_size, const char* session_id, const char* device_id);
bool pv_valid_pcm_chunk(size_t bytes);
bool pv_valid_downstream_audio(const char* format, int sample_rate, int channels, int sample_width, size_t byte_length);
bool pv_binary_matches_metadata(size_t expected_bytes, size_t received_bytes);
uint32_t pv_retry_delay_seconds(unsigned attempt);
PvState pv_disconnect_state(bool endpoint_valid);
const char* pv_state_label(PvState state);