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

/*  Fluent Bit

 *  ==========

 *  Copyright (C) 2015-2024 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.

 */

#include <fluent-bit/flb_info.h>

#include <fluent-bit/flb_output.h>

#include <fluent-bit/flb_utils.h>

#include <fluent-bit/flb_pack.h>

#include <fluent-bit/flb_sds.h>

#include "websocket.h"

#include "websocket_conf.h"

struct flb_out_ws *flb_ws_conf_create(struct flb_output_instance *ins,

                                          struct flb_config *config)

{

    int ret;

    int ulen;

    int io_flags = 0;

    char *uri = NULL;

    char *tmp_uri = NULL;

    const char *tmp;

    int idle_interval;

    struct flb_upstream *upstream;

    struct flb_out_ws *ctx = NULL;

    /* Allocate plugin context */

    ctx = flb_calloc(1, sizeof(struct flb_out_ws));

    if (!ctx) {

        flb_errno();

        return NULL;

    }

    ctx->ins = ins;

    ret = flb_output_config_map_set(ins, (void *) ctx);

    if (ret == -1) {

        flb_free(ctx);

        return NULL;

    }

    flb_output_net_default("127.0.0.1", 80, ins);

    /* Check if SSL/TLS is enabled */

#ifdef FLB_HAVE_TLS

    if (ins->use_tls == FLB_TRUE) {

        io_flags = FLB_IO_TLS;

    }

    else {

        io_flags = FLB_IO_TCP;

    }

#else

    io_flags = FLB_IO_TCP;

#endif

    upstream = flb_upstream_create(config, ins->host.name, ins->host.port, io_flags, ins->tls);

    if (!upstream) {

        flb_free(ctx);

        return NULL;

    }

    /* Output format */

    ctx->out_format = FLB_PACK_JSON_FORMAT_NONE;

    tmp = flb_output_get_property("format", ins);

    if (tmp) {

        ret = flb_pack_to_json_format_type(tmp);

        if (ret == -1) {

            flb_error("[out_ws] unrecognized 'format' option '%s'. Using 'msgpack'", tmp);

        }

        else {

            ctx->out_format = ret;

        }

    }

    /* Date format for JSON output */

    ctx->json_date_format = FLB_PACK_JSON_DATE_DOUBLE;

    tmp = flb_output_get_property("json_date_format", ins);

    if (tmp) {

        ret = flb_pack_to_json_date_type(tmp);

        if (ret == -1) {

            flb_error("[out_ws] unrecognized 'json_date_format' option '%s'. Using 'double'", tmp);

        }

        else {

            ctx->json_date_format = ret;

        }

    }

    if (ins->host.uri) {

        uri = flb_strdup(ins->host.uri->full);

    }

    else {

        tmp = flb_output_get_property("uri", ins);

        if (tmp) {

            uri = flb_strdup(tmp);

        }

    }

    if (!uri) {

        uri = flb_strdup("/");

    }

    else if (uri[0] != '/') {

        ulen = strlen(uri);

        tmp_uri = flb_malloc(ulen + 2);

        tmp_uri[0] = '/';

        memcpy(tmp_uri + 1, uri, ulen);

        tmp_uri[ulen + 1] = '\0';

        flb_free(uri);

        uri = tmp_uri;

    }

    idle_interval = ins->net_setup.keepalive_idle_timeout;

    if (idle_interval > 5) {

        ctx->idle_interval = idle_interval - 5;

    } else if (idle_interval <= 2) {

        flb_error("[out_ws] the keepalive timeout value is smaller than 2, which is meaningless! Please set it higher than 10 seconds. Current value will bring disorder for websocket plugin.");

        ctx->idle_interval = idle_interval;

    } else {

        ctx->idle_interval = idle_interval - 2;

    }

    ctx->u = upstream;

    ctx->uri = uri;

    ctx->host = ins->host.name;

    ctx->port = ins->host.port;

    flb_output_upstream_set(ctx->u, ins);

    flb_info("[out_ws] we have following parameter %s, %s, %d, %d", ctx->uri, ctx->host, ctx->port, ctx->idle_interval);

    return ctx;

}

void flb_ws_conf_destroy(struct flb_out_ws *ctx)

{

    flb_info("[out_ws] flb_ws_conf_destroy ");

    if (!ctx) {

        return;

    }

    if (ctx->u) {

        flb_upstream_destroy(ctx->u);

    }

    flb_free(ctx->uri);

    flb_free(ctx);

}