/**
 * NEURON IIoT System for Industry 4.0
 * Copyright (C) 2020-2021 EMQ Technologies Co., Ltd All rights reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 **/

#include <stdlib.h>

#include "vector.h"

#include "neu_plugin.h"
#include "json/neu_json_fn.h"
#include "json/neu_json_plugin.h"

#include "handle.h"
#include "http.h"

#include "plugin_handle.h"

void handle_add_plugin(nng_aio *aio)
{
    neu_plugin_t *plugin = neu_rest_get_plugin();

    REST_PROCESS_HTTP_REQUEST_VALIDATE_JWT(
        aio, neu_json_add_plugin_req_t, neu_json_decode_add_plugin_req, {
            intptr_t err = neu_system_add_plugin(
                plugin, req->kind, req->node_type, req->name, req->lib_name);
            if (err != 0) {
                http_bad_request(aio, "{\"error\": 1}");
            } else {
                http_ok(aio, "{\"error\": 0}");
            }
        })
}

void handle_del_plugin(nng_aio *aio)
{
    neu_plugin_t *plugin = neu_rest_get_plugin();

    REST_PROCESS_HTTP_REQUEST_VALIDATE_JWT(
        aio, neu_json_del_plugin_req_t, neu_json_decode_del_plugin_req, {
            plugin_id_t id;
            id.id_val    = req->id;
            intptr_t err = neu_system_del_plugin(plugin, id);
            if (err != 0) {
                http_bad_request(aio, "{\"error\": 1}");
            } else {
                http_ok(aio, "{\"error\": 0}");
            }
        })
}

void handle_update_plugin(nng_aio *aio)
{
    neu_plugin_t *plugin = neu_rest_get_plugin();

    REST_PROCESS_HTTP_REQUEST_VALIDATE_JWT(
        aio, neu_json_update_plugin_req_t, neu_json_decode_update_plugin_req, {
            intptr_t err = neu_system_update_plugin(
                plugin, req->kind, req->node_type, req->name, req->lib_name);
            if (err != 0) {
                http_bad_request(aio, "{\"error\": 1}");
            } else {
                http_ok(aio, "{\"error\": 0}");
            }
        })
}

void handle_get_plugin(nng_aio *aio)
{
    neu_plugin_t *             plugin      = neu_rest_get_plugin();
    neu_json_get_plugin_resp_t plugin_res  = { 0 };
    char *                     result      = NULL;
    int                        index       = 0;
    uint32_t                   plugin_id   = 0;
    vector_t                   plugin_libs = neu_system_get_plugin(plugin);

    VALIDATE_JWT(aio);

    http_get_param_uint32(aio, "plugin_id", &plugin_id);

    plugin_res.n_plugin_lib = plugin_libs.size;
    if (plugin_id > 0) {
        plugin_res.n_plugin_lib = 1;
    }
    plugin_res.plugin_libs = calloc(
        plugin_res.n_plugin_lib, sizeof(neu_json_get_plugin_resp_plugin_lib_t));

    VECTOR_FOR_EACH(&plugin_libs, iter)
    {
        plugin_lib_info_t *info = (plugin_lib_info_t *) iterator_get(&iter);

        if (plugin_id > 0 && plugin_id != info->plugin_id.id_val) {
            continue;
        }

        plugin_res.plugin_libs[index].node_type = info->node_type;
        plugin_res.plugin_libs[index].id        = info->plugin_id.id_val;
        plugin_res.plugin_libs[index].kind      = info->plugin_kind;
        plugin_res.plugin_libs[index].name      = (char *) info->plugin_name;
        plugin_res.plugin_libs[index].lib_name = (char *) info->plugin_lib_name;

        index += 1;
    }

    neu_json_encode_by_fn(&plugin_res, neu_json_encode_get_plugin_resp,
                          &result);

    http_ok(aio, result);
    free(result);
    free(plugin_res.plugin_libs);

    vector_uninit(&plugin_libs);
}