#ifndef OMNI_KCP_SESSION_STATS_H
#define OMNI_KCP_SESSION_STATS_H

#include "omni_common.h"

#ifdef __cplusplus
extern "C" {
#endif

#define KCP_SESSION_STATS_RECORD_SESSION_SAMPLE "session_sample"
#define KCP_SESSION_STATS_RECORD_PROCESS_SAMPLE "process_snmp_sample"

typedef struct kcp_session_stats_record {
    char record_type[32];
    char node_role[OMNI_MAX_NODE_ROLE];
    char node_id[OMNI_MAX_PEER_ID];
    char local_addr[OMNI_MAX_ADDR_TEXT];
    char remote_addr[OMNI_MAX_ADDR_TEXT];
    int has_conv;
    uint32_t conv;
    int64_t ts_unix_nano;
    char sample_reason[32];
    int has_rto_ms;
    uint32_t rto_ms;
    int has_srtt_ms;
    int32_t srtt_ms;
    int has_min_srtt_ms;
    int32_t min_srtt_ms;
    int has_srttvar_ms;
    int32_t srttvar_ms;
    int has_last_feedback_age_ms;
    uint32_t last_feedback_age_ms;
    int has_snd_wnd;
    uint32_t snd_wnd;
    int has_rmt_wnd;
    uint32_t rmt_wnd;
    int has_inflight;
    uint32_t inflight;
    int has_window_limit;
    uint32_t window_limit;
    int has_window_pressure_pct;
    double window_pressure_pct;
    int has_bytes_sent;
    uint64_t bytes_sent;
    int has_bytes_received;
    uint64_t bytes_received;
    int has_in_pkts;
    uint64_t in_pkts;
    int has_out_pkts;
    uint64_t out_pkts;
    int has_in_segs;
    uint64_t in_segs;
    int has_out_segs;
    uint64_t out_segs;
    int has_retrans_segs;
    uint64_t retrans_segs;
    int has_fast_retrans_segs;
    uint64_t fast_retrans_segs;
    int has_early_retrans_segs;
    uint64_t early_retrans_segs;
    int has_lost_segs;
    uint64_t lost_segs;
    int has_repeat_segs;
    uint64_t repeat_segs;
    int has_in_errs;
    uint64_t in_errs;
    int has_kcp_in_errs;
    uint64_t kcp_in_errs;
    int has_ring_buffer_snd_queue;
    uint64_t ring_buffer_snd_queue;
    int has_ring_buffer_rcv_queue;
    uint64_t ring_buffer_rcv_queue;
    int has_ring_buffer_snd_buffer;
    uint64_t ring_buffer_snd_buffer;
    int has_curr_estab;
    uint64_t curr_estab;
} kcp_session_stats_record_t;

typedef struct kcp_session_stats_logger {
    omni_file_logger_t file_logger;
    int enabled;
} kcp_session_stats_logger_t;

kcp_session_stats_logger_t *kcp_session_stats_open_jsonl(const char *path);
void kcp_session_stats_close(kcp_session_stats_logger_t *logger);
int kcp_session_stats_log(kcp_session_stats_logger_t *logger, const kcp_session_stats_record_t *record);

#ifdef __cplusplus
}
#endif

#endif