init: initial commit

2026-04-22 07:08:01 +03:00 · 2025-11-18 20:16:48 +00:00
commit fe11e264de
69 changed files with 10008 additions and 0 deletions
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+using System.Globalization;
+using System.Text.RegularExpressions;
+using AngleSharp.Dom;
+using AngleSharp.Html.Dom;
+using AngleSharp.Html.Parser;
+using BonchCalendar.Utils;
+using Ical.Net.CalendarComponents;
+using Ical.Net.DataTypes;
+
+namespace BonchCalendar.Services;
+
+public partial class ParsingService
+{
+	public CalendarEvent[] ParseGeneralTimetable(string rawHtml, DateTime semesterStartDate, string groupName)
+	{
+		using IHtmlDocument doc = new HtmlParser().ParseDocument(rawHtml);
+
+		IHtmlCollection<IElement> rawClasses = doc.QuerySelectorAll(".pair");
+		List<CalendarEvent> classes = [];
+
+		foreach (IElement classItem in rawClasses)
+		{
+			var (className, classType, professors, auditorium) = ParseBaseInfo(classItem);
+			int weekday = int.Parse(classItem.GetAttribute("weekday")!);
+
+			string timeLabelText = classItem.ParentElement!.ParentElement!.Children[0].TextContent;
+			Match timeMatch = ParserUtils.TimeLabelRegex().Match(timeLabelText);
+			string number = timeMatch.Success ? timeMatch.Groups["number"].Value : timeLabelText;
+			(TimeSpan startTime, TimeSpan endTime) = !timeMatch.Success ?
+				ParserUtils.GetTimesFromLabel(timeLabelText) :
+				(
+					TimeSpan.Parse(timeMatch.Groups["start"].Value),
+					TimeSpan.Parse(timeMatch.Groups["end"].Value)
+				);
+
+			int[] weeks = [
+				.. ParserUtils.NumberRegex().Matches(classItem.QuerySelector(".weeks")!.TextContent)
+					.Select(i => int.Parse(i.Value))
+			];
+
+			foreach (int week in weeks)
+			{
+				DateTime classDate = semesterStartDate
+					.AddDays((week - 1) * 7)          // Move to the correct week
+					.AddDays(weekday - 1);            // Move to the correct weekday
+
+				classes.Add(GetEvent(
+					$"{number}. {className} ({classType})", auditorium,
+					GetDescription(groupName, professors, auditorium, weeks),
+					classDate, startTime, endTime));
+			}
+		}
+
+		return [.. classes];
+	}
+
+	public CalendarEvent[] ParseExamTimetable(string rawHtml, string groupName)
+	{
+		using IHtmlDocument doc = new HtmlParser().ParseDocument(rawHtml);
+
+		IHtmlCollection<IElement> rawClasses = doc.QuerySelectorAll(".pair");
+		List<CalendarEvent> classes = new(rawClasses.Count);
+
+		foreach (IElement classItem in rawClasses)
+		{
+			var (className, classType, professors, auditorium) = ParseBaseInfo(classItem);
+
+			DateTime classDate = DateTime.Parse(classItem.Children[0].ChildNodes[0].TextContent, CultureInfo.GetCultureInfo("ru-RU"));
+			Match timeMatch = ParserUtils.ExamTimeRegex().Match(classItem.GetAttribute("pair")!);
+
+			if (!timeMatch.Success)
+				timeMatch = ParserUtils.ExamTimeAltRegex().Match(classItem.GetAttribute("pair")!);
+
+			string number = timeMatch.Groups["number"].Success ?
+				$"{timeMatch.Groups["number"].Value}. " : string.Empty;
+
+			TimeSpan startTime = TimeSpan.Parse(timeMatch.Groups["start"].Value.Replace('.', ':'));
+			TimeSpan endTime = TimeSpan.Parse(timeMatch.Groups["end"].Value.Replace('.', ':'));
+
+			classes.Add(GetEvent(
+				$"{number}{className} ({classType})", auditorium,
+				GetDescription(groupName, professors, auditorium),
+				classDate, startTime, endTime));
+		}
+
+		return [.. classes];
+	}
+
+	private static CalendarEvent GetEvent(string title, string auditorium, string description, DateTime date, TimeSpan startTime, TimeSpan endTime) =>
+		new()
+		{
+			Summary = title,
+			Description = description,
+			Start = new CalDateTime(date.Add(startTime - TimeSpan.FromHours(3)).ToUniversalTime()),
+			End = new CalDateTime(date.Add(endTime - TimeSpan.FromHours(3)).ToUniversalTime()),
+			Location = auditorium
+		};
+
+	private static string GetDescription(string groupName, string[] professors, string auditorium, int[]? weeks = null)
+	{
+		string str = $"""
+		Группа: {groupName}
+		Преподаватель(и):
+		- {string.Join("\n- ", professors)}
+		""";
+
+		if (weeks is not null && weeks.Length > 0)
+			str += $"\nНедели: {string.Join(", ", weeks)}";
+
+		Match auditoriumMatch = ParserUtils.AuditoriumRegex().Match(auditorium);
+
+		if (!auditoriumMatch.Success)
+			auditoriumMatch = ParserUtils.AuditoriumAltRegex().Match(auditorium);
+
+		if (auditoriumMatch.Success)
+			str += "\n\n" + $"""
+			ГУТ.Навигатор:
+			https://nav.sut.ru/?cab=k{auditoriumMatch.Groups["wing"].Value}-{auditoriumMatch.Groups["room"].Value}
+			""";
+
+		return str;
+	}
+
+	private static (string className, string classType, string[] professors, string auditorium) ParseBaseInfo(IElement classElement)
+	{
+		string className = classElement.QuerySelector(".subect")!.TextContent;
+		string classType = classElement.QuerySelector(".type")!.TextContent
+			.Replace("(", string.Empty).Replace(")", string.Empty).Trim();
+
+		string[] professors = classElement.QuerySelector(".teacher[title]")!.GetAttribute("title")
+				!.Split(';', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
+
+		string auditorium = classElement.QuerySelector(".aud")!.TextContent
+			.Replace("ауд.:", string.Empty).Replace(';', ',').Trim();
+
+		return (className, classType, professors, auditorium);
+	}
+}