/*
 * 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 "TasksFile.h"
#include "TaskItem.h"
#include <algorithm>
#include <functional>
#include <iostream>
#include <memory>
#include <ostream>

namespace mirai
{

TasksFile::TasksFile(TasksFileConstructor params) : name(params.name), path(params.path)
{
	for (const auto &task : params.tasks) {
		auto taskPtr = std::make_unique<TaskItem>(task);
		tasks.push_back(std::move(taskPtr));
	}
	sortByDate();
}

void TasksFile::onTaskChanged(TaskItem &taskItem)
{
	std::cout << "THIS PTR: " << this << std::endl;
	setDirty(true);
}

void TasksFile::setDirty(bool shouldBeDirty)
{
	isDirty_ = shouldBeDirty;
}

bool TasksFile::isDirty() const
{
	return isDirty_;
}

const std::string &TasksFile::getName() const
{
	return name;
}

const std::string &TasksFile::getPath() const
{
	return path;
}

TasksPtrs &TasksFile::getTasks()
{
	return tasks;
}

void TasksFile::addTask(TaskItemData taskItem)
{
	tasks.push_back(std::make_unique<TaskItem>(this, taskItem));
	setDirty(true);
}

void TasksFile::addTask(std::string text, std::string date)
{
	auto newTask = std::make_unique<TaskItem>(
		TaskItem{this, {.text = text, .state = TODO, .date = date == "" ? "No date" : date}}
	);
	tasks.push_back(std::move(newTask));
}

void TasksFile::removeTask(const TaskItem *taskToRemove)
{
	auto findFunction = [&](const std::unique_ptr<TaskItem> &taskInFilter) {
		return taskInFilter.get() == taskToRemove;
	};
	auto taskToDelete = std::remove_if(tasks.begin(), tasks.end(), findFunction);
	if (taskToDelete == tasks.end()) {
		return;
	}
	tasks.erase(taskToDelete);
	setDirty(true);
}

void TasksFile::sortByDate()
{
	std::sort(
		tasks.begin(), tasks.end(),
		[](const std::unique_ptr<TaskItem> &t1, const std::unique_ptr<TaskItem> &t2) {
			if (t1->hasDate() && !t2->hasDate()) {
				return true;
			} else if (!t1->hasDate() && t2->hasDate()) {
				return false;
			}
			return t1->getDate() < t2->getDate();
		}
	);
}
} // namespace mirai