#include "amduat/fed/ingest.h"

#include <stdbool.h>

static bool amduat_fed_record_id_eq(const amduat_fed_record_id_t *a,
                                    const amduat_fed_record_id_t *b) {
  if (a->type != b->type) {
    return false;
  }
  return amduat_reference_eq(a->ref, b->ref);
}

static bool amduat_fed_record_equivalent(const amduat_fed_record_t *a,
                                         const amduat_fed_record_t *b) {
  return a->meta.domain_id == b->meta.domain_id &&
         a->meta.visibility == b->meta.visibility &&
         a->meta.has_source == b->meta.has_source &&
         a->meta.source_domain == b->meta.source_domain &&
         a->logseq == b->logseq &&
         a->snapshot_id == b->snapshot_id &&
         a->log_prefix == b->log_prefix;
}

amduat_fed_ingest_error_t amduat_fed_ingest_validate(
    const amduat_fed_record_t *records,
    size_t count,
    size_t *out_error_index,
    size_t *out_conflict_index) {
  size_t i;
  size_t j;

  if (out_error_index != NULL) {
    *out_error_index = (size_t)-1;
  }
  if (out_conflict_index != NULL) {
    *out_conflict_index = (size_t)-1;
  }

  if (records == NULL && count != 0u) {
    return AMDUAT_FED_INGEST_ERR_INVALID;
  }

  for (i = 0; i < count; ++i) {
    const amduat_fed_record_t *record = &records[i];

    if (!amduat_fed_record_validate(record)) {
      if (out_error_index != NULL) {
        *out_error_index = i;
      }
      return AMDUAT_FED_INGEST_ERR_INVALID;
    }

    for (j = 0; j < i; ++j) {
      const amduat_fed_record_t *other = &records[j];

      if (!amduat_fed_record_id_eq(&record->id, &other->id)) {
        continue;
      }
      if (!amduat_fed_record_equivalent(record, other)) {
        if (out_error_index != NULL) {
          *out_error_index = i;
        }
        if (out_conflict_index != NULL) {
          *out_conflict_index = j;
        }
        return AMDUAT_FED_INGEST_ERR_CONFLICT;
      }
    }
  }

  return AMDUAT_FED_INGEST_OK;
}