/*
 * Mirai. Copyright (C) 2024 Vyn
 * This file is licensed under version 3 of the GNU General Public License (GPL-3.0-only)
 * The license can be found in the LICENSE file or at https://www.gnu.org/licenses/gpl-3.0.txt
 */

#include "Mirai.h"
#include "TaskItem.h"
#include "core/TasksFile.h"
#include "cpp-utils/debug.h"
#include "utils.h"
#include <algorithm>
#include <iostream>
#include <memory>
#include <optional>
#include <ostream>
#include <vector>

namespace mirai
{

void Mirai::loadFile(const std::string &path)
{
	try {
		auto tasksFile = TodoMdFormat::readFile(path);
		files.push_back(std::move(tasksFile));
		reloadTags();
	} catch (std::exception &e) {
		std::cout << "Cannot load file " << path << " : " << e.what() << std::endl;
	}
}

void Mirai::unloadAllFiles()
{
	files.clear();
}

void Mirai::save()
{
	for (auto &file : files) {
		if (file->isDirty()) {
			file->sortByDate();
			TodoMdFormat::writeFile(*file);
			file->setDirty(false);
		}
	}
	reloadTags();
}

void Mirai::addTask(TaskItemData taskItem)
{
	files[0]->addTask(taskItem);
}

void Mirai::addTask(std::string text, std::string date)
{
	/*std::time_t t = std::time(nullptr);*/
	/*std::tm tm = *std::localtime(&t);*/
	/*std::stringstream ssCreationDate;*/
	/*ssCreationDate << std::put_time(&tm, "%Y-%m-%d");*/
	files[0]->addTask(text, date);
}

void Mirai::removeTask(const TaskItem *taskItem)
{
	for (auto &file : files) {
		file->removeTask(taskItem);
	}
}

std::vector<std::unique_ptr<TasksFile>> &Mirai::getFiles()
{
	return files;
}

std::optional<std::reference_wrapper<TasksFile>> Mirai::getFileByPath(const std::string &path)
{
	auto fileIterator = std::ranges::find_if(files, [&](const std::unique_ptr<TasksFile> &file) {
		return file->getPath() == path;
	});

	if (fileIterator == files.end()) {
		return std::nullopt;
	}
	return *(fileIterator->get());
}

const std::vector<std::string> &Mirai::getTags()
{
	return tags;
}

void Mirai::reloadTags()
{
	cpputils::debug::Timer reloadingTagsDuration;
	tags.clear();
	for (auto &file : files) {
		for (auto &task : file->getTasks()) {
			for (auto &tag : task->getTags()) {
				if (!vectorUtils::contains(tags, tag)) {
					tags.push_back(tag);
				}
			}
		}
	}
	reloadingTagsDuration.printTimeElapsed("ReloadingTags");
}

} // namespace mirai