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

/*  Fluent Bit
 *  ==========
 *  Copyright (C) 2015-2018 Treasure Data Inc.
 *
 *  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 <stdlib.h>
#include <fluent-bit/flb_utils.h>

#include "fw.h"
#include "fw_conn.h"
#include "fw_config.h"

struct flb_in_fw_config *fw_config_init(struct flb_input_instance *i_ins)
{
    char tmp[16];
    char *listen;
    char *buffer_size;
    char *chunk_size;
    char *p;
    struct flb_in_fw_config *config;

    config = flb_calloc(1, sizeof(struct flb_in_fw_config));
    if (!config) {
        flb_errno();
        return NULL;
    }

    p = flb_input_get_property("unix_path", i_ins);
    if (p) {
        config->unix_path = flb_strdup(p);
    }
    else {
        /* Listen interface (if not set, defaults to 0.0.0.0) */
        if (!i_ins->host.listen) {
            listen = flb_input_get_property("listen", i_ins);
            if (listen) {
                config->listen = flb_strdup(listen);
            }
            else {
                config->listen = flb_strdup("0.0.0.0");
            }
        }
        else {
            config->listen = flb_strdup(i_ins->host.listen);
        }

        /* Listener TCP Port */
        if (i_ins->host.port == 0) {
            config->tcp_port = flb_strdup("24224");
        }
        else {
            snprintf(tmp, sizeof(tmp) - 1, "%d", i_ins->host.port);
            config->tcp_port = flb_strdup(tmp);
        }
    }

    /* Chunk size */
    chunk_size = flb_input_get_property("buffer_chunk_size", i_ins);
    if (!chunk_size) {
        config->buffer_chunk_size = FLB_IN_FW_CHUNK; /* 32KB */
    }
    else {
        /* Convert KB unit to Bytes */
        config->buffer_chunk_size  = flb_utils_size_to_bytes(chunk_size);
    }

    /* Buffer size */
    buffer_size = flb_input_get_property("buffer_max_size", i_ins);
    if (!buffer_size) {
        config->buffer_max_size = config->buffer_chunk_size;
    }
    else {
        /* Convert KB unit to Bytes */
        config->buffer_max_size  = flb_utils_size_to_bytes(buffer_size);
    }

    if (!config->unix_path) {
        flb_debug("[in_fw] Listen='%s' TCP_Port=%s",
                  config->listen, config->tcp_port);
    }
    return config;
}

int fw_config_destroy(struct flb_in_fw_config *config)
{
    if (config->unix_path) {
        unlink(config->unix_path);
        flb_free(config->unix_path);
    }
    else {
        flb_free(config->listen);
        flb_free(config->tcp_port);
    }
    flb_free(config);

    return 0;
}
