#ifndef AMDUAT_FED_COORD_H
#define AMDUAT_FED_COORD_H

#include "amduat/asl/core.h"
#include "amduat/asl/store.h"
#include "amduat/fed/registry.h"
#include "amduat/fed/view.h"

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

#ifdef __cplusplus
extern "C" {
#endif

typedef struct amduat_fed_coord amduat_fed_coord_t;

typedef enum {
  AMDUAT_FED_COORD_OK = 0,
  AMDUAT_FED_COORD_ERR_INVALID = 1,
  AMDUAT_FED_COORD_ERR_OOM = 2,
  AMDUAT_FED_COORD_ERR_STORE = 3,
  AMDUAT_FED_COORD_ERR_CODEC = 4,
  AMDUAT_FED_COORD_ERR_NOT_IMPLEMENTED = 5
} amduat_fed_coord_error_t;

typedef struct {
  void *ctx;
  int (*get_records)(void *ctx,
                     uint32_t domain_id,
                     uint64_t snapshot_id,
                     uint64_t log_prefix,
                     uint64_t from_logseq,
                     amduat_fed_record_t **out_records,
                     size_t *out_len);
  void (*free_records)(void *ctx, amduat_fed_record_t *records, size_t len);
  int (*get_artifact)(void *ctx,
                      amduat_reference_t ref,
                      amduat_octets_t *out_bytes);
} amduat_fed_transport_t;

typedef struct {
  void *ctx;
  bool (*record_allowed)(void *ctx,
                         const amduat_fed_record_t *record,
                         amduat_fed_policy_deny_t *out_deny);
} amduat_fed_policy_hooks_t;

typedef struct {
  uint32_t local_domain_id;
  amduat_asl_store_t *authoritative_store;
  amduat_asl_store_t *cache_store;
  amduat_reference_t registry_ref;
  amduat_fed_transport_t transport;
  amduat_fed_policy_hooks_t policy_hooks;
} amduat_fed_coord_cfg_t;

typedef struct {
  uint32_t domain_id;
  amduat_reference_t registry_ref;
  uint64_t last_tick_ms;
} amduat_fed_coord_status_t;

amduat_fed_coord_error_t amduat_fed_coord_open(
    const amduat_fed_coord_cfg_t *cfg,
    amduat_fed_coord_t **out_coord);

amduat_fed_coord_error_t amduat_fed_coord_close(amduat_fed_coord_t *coord);

amduat_fed_coord_error_t amduat_fed_coord_load_registry(
    amduat_fed_coord_t *coord);

amduat_fed_coord_error_t amduat_fed_coord_set_admitted(
    amduat_fed_coord_t *coord,
    uint32_t domain_id,
    bool admitted);

amduat_fed_coord_error_t amduat_fed_coord_tick(
    amduat_fed_coord_t *coord,
    uint64_t now_ms);

amduat_fed_coord_error_t amduat_fed_coord_resolve(
    amduat_fed_coord_t *coord,
    amduat_reference_t ref,
    amduat_artifact_t *out_artifact);

void amduat_fed_coord_get_status(const amduat_fed_coord_t *coord,
                                 amduat_fed_coord_status_t *out_status);

#ifdef __cplusplus
} /* extern "C" */
#endif

#endif /* AMDUAT_FED_COORD_H */