/*
 * .============.
 * // M A K E / \
 * // C++ DEV / \
 * // E A S Y / \/ \
 * ++ ----------. \/\ .
 * \\ \ \ /\ /
 * \\ \ \ /
 * \\ \ \ /
 * -============'
 *
 * Copyright (c) 2018 Hevake and contributors, all rights reserved.
 *
 * This file is part of cpp-tbox (https://github.com/cpp-main/cpp-tbox)
 * Use of this source code is governed by MIT license that can be found
 * in the LICENSE file in the root of the source tree. All contributing
 * project authors may be found in the CONTRIBUTORS.md file in the root
 * of the source tree.
 */
#include "async.h"

#include <memory>
#include <tbox/base/assert.h>
#include <tbox/util/fs.h>
#include <tbox/util/execute_cmd.h>

#undef MODULE_ID
#define MODULE_ID "tbox.async"

namespace tbox {
namespace eventx {

Async::Async(eventx::ThreadPool *thread_pool)
 : thread_pool_(thread_pool)
{ }

void Async::readFile(const std::string &filename, StringCallback &&cb)
{
 TBOX_ASSERT(!filename.empty());
 TBOX_ASSERT(cb != nullptr);

 struct Tmp {
 int error_code = 0;
 std::string result;
 StringCallback cb;
 };

 auto tmp = std::make_shared<Tmp>();
 tmp->cb = std::move(cb);

 thread_pool_->execute(
 [tmp, filename] {
 if (!util::fs::ReadStringFromTextFile(filename, tmp->result))
 tmp->error_code = 1;
 },
 [tmp] {
 tmp->cb(tmp->error_code, tmp->result);
 }
 );
}

void Async::readFileLines(const std::string &filename, StringVecCallback &&cb)
{
 TBOX_ASSERT(!filename.empty());
 TBOX_ASSERT(cb != nullptr);

 struct Tmp {
 int error_code = 0;
 std::vector<std::string> line_vec;
 StringVecCallback cb;
 };

 auto tmp = std::make_shared<Tmp>();
 tmp->cb = std::move(cb);

 thread_pool_->execute(
 [tmp, filename] {
 auto is_succ = util::fs::ReadEachLineFromTextFile(filename,
 [tmp](const std::string &line) {
 tmp->line_vec.emplace_back(line);
 }
 );

 if (!is_succ)
 tmp->error_code = 1;
 },
 [tmp] {
 tmp->cb(tmp->error_code, tmp->line_vec);
 }
 );
}

void Async::writeFile(const std::string &filename, const std::string &content, bool sync_now, Callback &&cb)
{
 TBOX_ASSERT(!filename.empty());

 struct Tmp {
 int error_code = 0;
 Callback cb;
 };

 auto tmp = std::make_shared<Tmp>();
 tmp->cb = std::move(cb);

 thread_pool_->execute(
 [tmp, filename, content, sync_now] {
 if (!util::fs::WriteStringToTextFile(filename, content, sync_now))
 tmp->error_code = 1;
 },
 [tmp] {
 if (tmp->cb)
 tmp->cb(tmp->error_code);
 }
 );
}

void Async::appendFile(const std::string &filename, const std::string &content, bool sync_now, Callback &&cb)
{
 TBOX_ASSERT(!filename.empty());

 struct Tmp {
 int error_code = 0;
 Callback cb;
 };

 auto tmp = std::make_shared<Tmp>();
 tmp->cb = std::move(cb);

 thread_pool_->execute(
 [tmp, filename, content, sync_now] {
 if (!util::fs::AppendStringToTextFile(filename, content, sync_now))
 tmp->error_code = 1;
 },
 [tmp] {
 if (tmp->cb)
 tmp->cb(tmp->error_code);
 }
 );
}

void Async::removeFile(const std::string &filename, Callback &&cb)
{
 TBOX_ASSERT(!filename.empty());

 struct Tmp {
 int error_code = 0;
 Callback cb;
 };

 auto tmp = std::make_shared<Tmp>();
 tmp->cb = std::move(cb);

 thread_pool_->execute(
 [tmp, filename] {
 if (!util::fs::RemoveFile(filename))
 tmp->error_code = 1;
 },
 [tmp] {
 if (tmp->cb)
 tmp->cb(tmp->error_code);
 }
 );
}

void Async::executeCmd(const std::string &cmd, Callback &&cb)
{
 TBOX_ASSERT(!cmd.empty());

 struct Tmp {
 int error_code = 0;
 Callback cb;
 };

 auto tmp = std::make_shared<Tmp>();
 tmp->cb = std::move(cb);

 thread_pool_->execute(
 [tmp, cmd] {
 if (!util::ExecuteCmd(cmd))
 tmp->error_code = 1;
 },
 [tmp] {
 if (tmp->cb)
 tmp->cb(tmp->error_code);
 }
 );
}

void Async::executeCmd(const std::string &cmd, StringCallback &&cb)
{
 TBOX_ASSERT(!cmd.empty());
 TBOX_ASSERT(cb != nullptr);

 struct Tmp {
 int error_code = 0;
 std::string result;
 StringCallback cb;
 };

 auto tmp = std::make_shared<Tmp>();
 tmp->cb = std::move(cb);

 thread_pool_->execute(
 [tmp, cmd] {
 if (!util::ExecuteCmd(cmd, tmp->result))
 tmp->error_code = 1;
 },
 [tmp] {
 tmp->cb(tmp->error_code, tmp->result);
 }
 );
}

}
}