/*******************************************************************************
 * Copyright 2013-2023 Aerospike, 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 "client.h"
#include "command.h"
#include "async.h"
#include "conversions.h"
#include "policy.h"
#include "log.h"
#include "string.h"

extern "C" {
#include <aerospike/aerospike.h>
#include <aerospike/aerospike_info.h>
#include <aerospike/as_cluster.h>
}

#define MAX_INFO_REQUEST_LEN 256

using namespace v8;

class InfoNodeCommand : public AerospikeCommand {
  public:
	InfoNodeCommand(AerospikeClient *client, Local<Function> callback_)
		: AerospikeCommand("InfoNode", client, callback_)
	{
	}

	~InfoNodeCommand()
	{
		if (policy != NULL)
			cf_free(policy);
		if (request != NULL && strlen(request) > 0)
			cf_free(request);
		if (response != NULL)
			cf_free(response);
	}

	as_policy_info *policy = NULL;
	char *request = NULL;
	char *response = NULL;
	char node_name[AS_NODE_NAME_SIZE] = {'\0'};
};

static void *prepare(const Nan::FunctionCallbackInfo<v8::Value> &info)
{
	Nan::HandleScope scope;
	AerospikeClient *client =
		Nan::ObjectWrap::Unwrap<AerospikeClient>(info.This());
	InfoNodeCommand *cmd = new InfoNodeCommand(client, info[3].As<Function>());
	LogInfo *log = client->log;

	if (info[0]->IsString()) {
		cmd->request = (char *)cf_malloc(MAX_INFO_REQUEST_LEN);
		size_t reqlen =
			as_strlcpy(cmd->request, *Nan::Utf8String(info[0].As<String>()),
					   MAX_INFO_REQUEST_LEN);
		if (reqlen > MAX_INFO_REQUEST_LEN) {
			as_v8_info(log,
					   "Info request exceeds max. length (%zu > %i): \"%s...\"",
					   reqlen, MAX_INFO_REQUEST_LEN, cmd->request);
			return CmdSetError(cmd, AEROSPIKE_ERR_PARAM,
							   "Info request exceeds max. length");
		}
	}
	else {
		cmd->request = (char *)"";
	}

	Local<String> node_name = info[1].As<String>();
	snprintf(cmd->node_name, AS_NODE_NAME_SIZE, "%s", *Nan::Utf8String(node_name));

	if (info[2]->IsObject()) {
		cmd->policy = (as_policy_info *)cf_malloc(sizeof(as_policy_info));
		if (infopolicy_from_jsobject(cmd->policy, info[2].As<Object>(), log) !=
			AS_NODE_PARAM_OK) {
			return CmdSetError(cmd, AEROSPIKE_ERR_PARAM,
							   "Policy parameter is invalid");
		}
	}

	return cmd;
}

static void execute(uv_work_t *req)
{
	InfoNodeCommand *cmd = reinterpret_cast<InfoNodeCommand *>(req->data);
	LogInfo *log = cmd->log;

	if (!cmd->CanExecute()) {
		return;
	}

	as_cluster *cluster = cmd->as->cluster;
	as_node *node = as_node_get_by_name(cluster, cmd->node_name);
	if (node) {
		as_v8_debug(log, "Sending info command \"%s\" to cluster node %s",
					cmd->request, cmd->node_name);
		aerospike_info_node(cmd->as, &cmd->err, cmd->policy, node, cmd->request,
							&cmd->response);
		as_node_release(node);
	}
	else {
		as_v8_error(log, "No cluster node with name %s found", cmd->node_name);
	}
}

static void respond(uv_work_t *req, int status)
{
	Nan::HandleScope scope;
	InfoNodeCommand *cmd = reinterpret_cast<InfoNodeCommand *>(req->data);

	if (cmd->IsError()) {
		cmd->ErrorCallback();
	}
	else {
		Local<Value> response;
		if (cmd->response != NULL && strlen(cmd->response) > 0) {
			response = Nan::New(cmd->response).ToLocalChecked();
		}
		else {
			response = Nan::Null();
		}
		Local<Value> argv[] = {Nan::Null(), response};
		cmd->Callback(2, argv);
	}

	delete cmd;
	delete req;
}

NAN_METHOD(AerospikeClient::InfoNode)
{
	TYPE_CHECK_OPT(info[0], IsString, "Request must be a string");
	TYPE_CHECK_REQ(info[1], IsString, "Node must be a string");
	TYPE_CHECK_OPT(info[2], IsObject, "Policy must be an object");
	TYPE_CHECK_REQ(info[3], IsFunction, "Callback must be a function");

	async_invoke(info, prepare, execute, respond);
}