/* -*- 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.

 */

#include <fluent-bit/flb_input_plugin.h>

#include <fluent-bit/flb_oauth2_jwt.h>

#include "opentelemetry.h"

/* default HTTP port for OTLP/HTTP is 4318 */

#define OTLP_HTTP_PORT    4318

struct flb_opentelemetry *opentelemetry_config_create(struct flb_input_instance *ins)

{

    int ret;

    char port[8];

    struct flb_opentelemetry *ctx;

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

    if (!ctx) {

        flb_errno();

        return NULL;

    }

    ctx->ins = ins;

    ctx->oauth2_cfg.jwks_refresh_interval = 300;

    ctx->oauth2_cfg.jwks_buffer_max_size = 1000000;

    ctx->oauth2_cfg.jwks_response_timeout = 30;

    /* Load the config map */

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

    if (ret == -1) {

        flb_free(ctx);

        return NULL;

    }

    if (ins->oauth2_jwt_config_map && mk_list_size(&ins->oauth2_jwt_properties) > 0) {

        ret = flb_config_map_set(ins->config,

                                 &ins->oauth2_jwt_properties,

                                 ins->oauth2_jwt_config_map,

                                 &ctx->oauth2_cfg);

        if (ret == -1) {

            flb_free(ctx);

            return NULL;

        }

    }

    /* Listen interface (if not set, defaults to 0.0.0.0:4318) */

    flb_input_net_default_listener("0.0.0.0", OTLP_HTTP_PORT, ins);

    ctx->listen = flb_strdup(ins->host.listen);

    snprintf(port, sizeof(port) - 1, "%d", ins->host.port);

    ctx->tcp_port = flb_strdup(port);

    return ctx;

}

int opentelemetry_config_destroy(struct flb_opentelemetry *ctx)

{

    flb_http_server_destroy(&ctx->http_server);

    if (ctx->oauth2_ctx) {

        flb_oauth2_jwt_context_destroy(ctx->oauth2_ctx);

        ctx->oauth2_ctx = NULL;

    }

    flb_free(ctx->listen);

    flb_free(ctx->tcp_port);

    flb_free(ctx);

    return 0;

}