// 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.

#include "resources.h"

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

int erlfdb_init_resources(ErlNifEnv *env) {

    ErlFDBFutureRes =
        enif_open_resource_type(env, NULL, "erlfdb_future", erlfdb_future_dtor,
                                ERL_NIF_RT_CREATE, NULL);
    if (ErlFDBFutureRes == NULL) {
        return 0;
    }

    ErlFDBDatabaseRes =
        enif_open_resource_type(env, NULL, "erlfdb_database",
                                erlfdb_database_dtor, ERL_NIF_RT_CREATE, NULL);
    if (ErlFDBDatabaseRes == NULL) {
        return 0;
    }

    ErlFDBTenantRes =
        enif_open_resource_type(env, NULL, "erlfdb_tenant", erlfdb_tenant_dtor,
                                ERL_NIF_RT_CREATE, NULL);
    if (ErlFDBTenantRes == NULL) {
        return 0;
    }

    ErlFDBTransactionRes = enif_open_resource_type(
        env, NULL, "erlfdb_transaction", erlfdb_transaction_dtor,
        ERL_NIF_RT_CREATE, NULL);
    if (ErlFDBTransactionRes == NULL) {
        return 0;
    }

    return 1;
}

void erlfdb_future_dtor(ErlNifEnv *env, void *obj) {
    ErlFDBFuture *f = (ErlFDBFuture *)obj;

    if (f->future != NULL) {
        fdb_future_destroy(f->future);
    }

    if (f->msg_env != NULL) {
        enif_free_env(f->msg_env);
    }

    if (f->lock != NULL) {
        enif_mutex_destroy(f->lock);
    }
}

void erlfdb_database_dtor(ErlNifEnv *env, void *obj) {
    ErlFDBDatabase *d = (ErlFDBDatabase *)obj;

    if (d->database != NULL) {
        fdb_database_destroy(d->database);
    }
}

void erlfdb_tenant_dtor(ErlNifEnv *env, void *obj) {
    ErlFDBTenant *ten = (ErlFDBTenant *)obj;

    if (ten->tenant != NULL) {
        fdb_tenant_destroy(ten->tenant);
    }
}

void erlfdb_transaction_dtor(ErlNifEnv *env, void *obj) {
    ErlFDBTransaction *t = (ErlFDBTransaction *)obj;

    if (t->transaction != NULL) {
        fdb_transaction_destroy(t->transaction);
    }
}

int erlfdb_transaction_is_owner(ErlNifEnv *env, ErlFDBTransaction *t) {
    ErlNifPid pid;
    ERL_NIF_TERM self;

    enif_self(env, &pid);
    self = enif_make_pid(env, &pid);

    return enif_compare(t->owner, self) == 0;
}