Switch from Qt6 to Slint

lib/mirai-core/TodoMd.h

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+/*
+ * 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
+ */
+
+#ifndef MIRAI_TODOMD_H
+#define MIRAI_TODOMD_H
+
+#include "TaskItem.h"
+#include "cpp-utils/debug.h"
+#include "cpp-utils/string.h"
+#include "mirai-core/DateTime.h"
+#include "mirai-core/Day.h"
+#include "mirai-core/Event.h"
+#include <format>
+#include <optional>
+#include <sstream>
+#include <stdexcept>
+#include <string>
+#include <vector>
+
+namespace mirai
+{
+
+struct MiraiMarkdownFormatParseResult {
+	std::string name;
+	std::vector<DayData> days;
+};
+
+class TodoMdFormat
+{
+  public:
+	static std::string
+	stringify(const std::string &name, const std::vector<std::unique_ptr<Day>> &days)
+	{
+		std::string result = "# " + name + "\n\n";
+		std::string currentDate = "";
+
+		for (const auto &day : days) {
+			auto &date = day->getDate();
+			result += "## " + std::format("{:02d}-{:02d}-{:02d}", date.year, date.month, date.day) +
+					  "\n\n";
+			for (const auto &event : *(day->events())) {
+				auto &start = event->getStartTime();
+				auto &end = event->getEndTime();
+				result += "> " +
+						  std::format(
+							  "{:02d}h{:02d}-{:02d}h{:02d} {}", start.hour, start.minute, end.hour,
+							  end.minute, event->getText()
+						  ) +
+						  "\n";
+				for (const auto &task : *(event->tasks())) {
+					result += taskToString(*task) + '\n';
+				}
+				result += '\n';
+			}
+			for (const auto &task : *(day->tasks())) {
+				result += taskToString(*task) + '\n';
+			}
+			result += '\n';
+		}
+
+		return result;
+	};
+
+	static MiraiMarkdownFormatParseResult parse(const std::string &content)
+	{
+		cpputils::debug::Timer readMdFormatDuration;
+		std::vector<TaskItem> taskItems;
+		std::string line;
+
+		std::stringstream contentStream(content);
+
+		if (!std::getline(contentStream, line) || line.substr(0, 2) != "# ") {
+			std::cerr << "Couldn't find the task list name" << std::endl;
+		}
+
+		std::string name = line.substr(2);
+		std::string currentDateString = "";
+
+		std::vector<mirai::DayData> daysData;
+		mirai::DayData *currentDay = nullptr;
+		mirai::EventData *currentEvent = nullptr;
+
+		cpputils::debug::Timer stringToTaskDuration;
+		stringToTaskDuration.reset();
+		cpputils::debug::Timer gelinesDuration;
+		while (std::getline(contentStream, line)) {
+			if (std::string_view{line.data(), 3} == "## ") {
+				currentDateString = line.substr(3);
+				auto dateOpt = mirai::stringToDate(currentDateString);
+				if (!dateOpt.has_value()) {
+					throw std::runtime_error("Malformated date");
+				}
+				daysData.push_back({.date = dateOpt.value()});
+				currentDay = &daysData.back();
+			} else if (line.starts_with("> ")) {
+				auto event = stringToEvent(line, currentDateString);
+				if (currentDay) {
+					currentDay->events.push_back(event);
+					currentEvent = &currentDay->events.back();
+				}
+			} else if (line.starts_with("- [ ]") || line.starts_with("- [X]")) {
+				stringToTaskDuration.start();
+				TaskItemData taskItemData = stringToTask(line, currentDateString);
+				stringToTaskDuration.stop();
+				if (currentEvent) {
+					currentEvent->tasks.push_back(taskItemData);
+				} else if (currentDay) {
+					currentDay->tasks.push_back(taskItemData);
+				}
+			} else if (cpputils::string::trim(line) == "") {
+				currentEvent = nullptr;
+			}
+		}
+
+		gelinesDuration.printTimeElapsed("getlinesDuration");
+		stringToTaskDuration.printTimeElapsed("stringToTaskDuration");
+		readMdFormatDuration.printTimeElapsed("Reading MD File duration");
+		return {.name = name, .days = daysData};
+	}
+
+	static std::string taskToString(const TaskItem &task);
+	static TaskItemData stringToTask(const std::string &str, const std::string &date);
+	static EventData stringToEvent(const std::string &str, const std::string &date);
+
+  private:
+	static std::string fieldWithSpace(const std::string &field);
+	static TaskItem parseLine(const std::string &line);
+	static Tags extractTagsFromMetadata(std::string metadata);
+};
+} // namespace mirai
+
+#endif