/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*  Fluent Bit
 *  ==========
 *  Copyright (C) 2015-2026 The Fluent Bit Authors
 *
 *  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 FLB_ENV_H
#define FLB_ENV_H

#include <fluent-bit/flb_info.h>
#include <fluent-bit/flb_sds.h>
#include <monkey/mk_core.h>
#include <time.h>

#define FLB_ENV_SIZE 64

struct flb_env_var {
    flb_sds_t name;                /* variable name */
    flb_sds_t value;               /* value (resolved) */
    flb_sds_t uri;                 /* optional file URI */
    int refresh_interval;          /* refresh interval in seconds */
    time_t last_refresh;           /* last refresh timestamp */
    struct mk_list _head;          /* link to flb_env vars list */
};

struct flb_env {
    int warn_unused;        /* warn about unused environment variable */
    struct flb_hash_table *ht;
    struct mk_list vars;    /* list of environment variables */
};

static inline void flb_env_warn_unused(struct flb_env *env, int warn)
{
    env->warn_unused = warn;
}

struct flb_env *flb_env_create();
void flb_env_destroy(struct flb_env *env);
int flb_env_set(struct flb_env *env, const char *key, const char *val);
int flb_env_set_extended(struct flb_env *env, const char *key, const char *val,
                         const char *uri, int refresh_interval);
const char *flb_env_get(struct flb_env *env, const char *key);
flb_sds_t flb_env_var_translate(struct flb_env *env, const char *value);

#endif
