/*
 * Copyright (c) 2022-2022 Huawei Device Co., Ltd.
 * 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 "inputmethod_dump.h"

#include <cstdint>
#include <functional>
#include <list>
#include <string>
#include <vector>

#include "global.h"

namespace OHOS {
namespace MiscServices {
constexpr int32_t MAX_RECORD_ERROR = 10;
constexpr int32_t SUB_CMD_NAME = 0;
constexpr int32_t CMD_ONE_PARAM = 1;
constexpr const char *CMD_HELP = "-h";
constexpr const char *CMD_ALL_DUMP = "-a";
static const std::string ILLEGAL_INFO = "input dump parameter error,enter '-h' for usage.\n";

void InputmethodDump::AddDumpAllMethod(const DumpNoParamFunc dumpAllMethod)
{
 if (dumpAllMethod == nullptr) {
 return;
 }
 dumpAllMethod_ = dumpAllMethod;
}

void InputmethodDump::AddErrorInfo(const std::string &error)
{
 std::lock_guard<std::mutex> lock(hidumperMutex_);
 if (errorInfo_.size() + 1 > MAX_RECORD_ERROR) {
 errorInfo_.pop_front();
 errorInfo_.push_back(error);
 } else {
 errorInfo_.push_back(error);
 }
}

bool InputmethodDump::Dump(int fd, const std::vector<std::string> &args)
{
 IMSA_HILOGI("InputmethodDump::Dump start.");
 std::string command = "";
 if (args.size() == CMD_ONE_PARAM) {
 command = args.at(SUB_CMD_NAME);
 } else {
 ShowIllealInformation(fd);
 }
 if (command == CMD_HELP) {
 ShowHelp(fd);
 } else if (command == CMD_ALL_DUMP) {
 if (!dumpAllMethod_) {
 return false;
 }
 dumpAllMethod_(fd);
 } else {
 ShowIllealInformation(fd);
 }
 IMSA_HILOGI("InputmethodDump::Dump command=%{public}s.", command.c_str());
 return true;
}

void InputmethodDump::ShowHelp(int fd)
{
 std::string result;
 result.append("Usage:dump <command> [options]\n")
 .append("Description:\n")
 .append("-h show help\n")
 .append("-a dump all input methods\n");
 dprintf(fd, "%s\n", result.c_str());
}

void InputmethodDump::ShowIllealInformation(int fd)
{
 dprintf(fd, "%s\n", ILLEGAL_INFO.c_str());
}
} // namespace MiscServices
} // namespace OHOS