feat(parser): update group parsing to handle special cases and improve regex patterns

feat(parser): enhance details extraction for lessons, including handling of subgroups and room moves

feat(timetable): integrate room and teacher retrieval based on week context

test(parser): add tests for group parsing with special characters and room move scenarios

test(formats): implement tests for various lesson formats and their expected outputs

feat(rooms): introduce room management functions for handling moves and week-based plans

server/timetable.js

@@ -2,7 +2,7 @@
 // third-party clients use it instead of re-implementing the white/green week rules.
 import { semesterView, addDays, weekday, weekIndexOf } from "../shared/weeks.js";
 import { lessonKey, subgroupsOf } from "../shared/lessons.js";
-import { occurrence, peopleAndRooms, roomsOn } from "./directory.js";
+import { occurrence, peopleAndRooms, roomsOn, teachersOn, movedOn } from "./directory.js";
 import { apiError } from "./errors.js";
 
 const MAX_DAYS = 62;
@@ -10,9 +10,10 @@ const MAX_DAYS = 62;
 const MAX_SEMESTER_DAYS = 200;
 const DAY_MS = 86_400_000;
 
-function lessonOut(lesson, group, people, date, status, calendar) {
+// On a date: the room and teacher of that day and week ("1-9н. 502н", a move on 26.10).
+function lessonOut(lesson, group, people, date, status, calendar, week = null) {
   const bell = calendar?.bells.find((b) => b.start === lesson.start);
-  const rooms = date ? roomsOn(people, date) : people.rooms;
+  const rooms = date ? roomsOn(people, date, week) : people.rooms;
   return {
     key: lessonKey(lesson, group),
     start: lesson.start,
@@ -20,9 +21,9 @@ function lessonOut(lesson, group, people, date, status, calendar) {
     pair: bell?.pair ?? null,
     subject: lesson.subject,
     type: lesson.type,
-    teachers: people.teachers,
+    teachers: date ? teachersOn(people, week) : people.teachers,
     rooms,
-    roomMoved: Boolean(date && rooms !== people.rooms),
+    roomMoved: Boolean(date && movedOn(people, date)),
     distance: people.distance,
     condition: lesson.condition,
     variant: lesson.variant,
@@ -37,9 +38,23 @@ function lessonOut(lesson, group, people, date, status, calendar) {
  * days: one entry per date from `from`, with the lessons that take place that day.
  * weekly: the Word rows by weekday, for when dates cannot be calculated.
  */
+const groupKey = (g) => g.toLowerCase().replace(/[\s\-–]/g, "");
+
 export function timetable({ file, schedule, calendar, group, from, days, range, today, session: extra = [] }) {
   if (!schedule.groups.includes(group)) {
-    throw apiError(404, "group_not_found", `В документе нет группы ${group}.`);
+    // The same group written another way: "24-ИЯ(РА)и-1" for "24-ИЯ (РА)и-1".
+    const same = schedule.groups.find((g) => groupKey(g) === groupKey(group));
+    // A name parser 13 split into groups: a client may still keep "24-ИЯ(РА)".
+    const split = schedule.groups.filter((g) => groupKey(g).startsWith(groupKey(group)));
+    if (same) group = same;
+    else
+      throw apiError(
+        404,
+        "group_not_found",
+        split.length
+          ? `Группа ${group} теперь разделена: ${split.join(", ")}. Выберите свою в списке групп.`
+          : `В документе нет группы ${group}.`,
+      );
   }
   let count = Math.min(Math.max(Number(days) || 7, 1), MAX_DAYS);
   const lessons = schedule.lessons.filter((l) => l.groups.includes(group));
@@ -90,7 +105,7 @@ export function timetable({ file, schedule, calendar, group, from, days, range,
       for (const entry of entries) {
         const status = occurrence(entry, date, calendar, views);
         if (status === "yes" || status === "maybe")
-          dayLessons.push(lessonOut(entry.lesson, group, entry, date, status, calendar));
+          dayLessons.push(lessonOut(entry.lesson, group, entry, date, status, calendar, week));
       }
     // Session events printed with their own date need no week table.
     for (const entry of extra)