// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.

#ifndef ERLFDB_RESOURCES_H
#define ERLFDB_RESOURCES_H

#include <stdbool.h>

#include "erl_nif.h"
#include "fdb.h"

extern ErlNifResourceType *ErlFDBFutureRes;
extern ErlNifResourceType *ErlFDBDatabaseRes;
extern ErlNifResourceType *ErlFDBTenantRes;
extern ErlNifResourceType *ErlFDBTransactionRes;

typedef enum _ErlFDBFutureType {
    ErlFDB_FT_NONE = 0,
    ErlFDB_FT_VOID,
    ErlFDB_FT_INT64,
    ErlFDB_FT_KEY,
    ErlFDB_FT_VALUE,
    ErlFDB_FT_STRING_ARRAY,
    ErlFDB_FT_KEYVALUE_ARRAY,
    ErlFDB_FT_MAPPEDKEYVALUE_ARRAY,
    ErlFDB_FT_KEY_ARRAY
} ErlFDBFutureType;

typedef struct _ErlFDBFuture {
    FDBFuture *future;
    ErlFDBFutureType ftype;
    ErlNifPid pid;
    ErlNifEnv *pid_env;
    ErlNifEnv *msg_env;
    ERL_NIF_TERM msg_ref;
    ErlNifMutex *lock;
    bool cancelled;
} ErlFDBFuture;

typedef struct _ErlFDBDatabase {
    FDBDatabase *database;
} ErlFDBDatabase;

typedef struct _ErlFDBTenant {
    FDBTenant *tenant;
} ErlFDBTenant;

typedef struct _ErlFDBTransaction {
    FDBTransaction *transaction;
    ERL_NIF_TERM owner;
    unsigned int txid;
    bool read_only;
    bool writes_allowed;
    bool has_watches;
} ErlFDBTransaction;

int erlfdb_init_resources(ErlNifEnv *env);
void erlfdb_future_dtor(ErlNifEnv *env, void *obj);
void erlfdb_database_dtor(ErlNifEnv *env, void *obj);
void erlfdb_tenant_dtor(ErlNifEnv *env, void *obj);
void erlfdb_transaction_dtor(ErlNifEnv *env, void *obj);

int erlfdb_transaction_is_owner(ErlNifEnv *env, ErlFDBTransaction *t);

#endif // Included resources.h