Реализованы компоненты для отображения посещаемости: AttendanceTable, StatsCard и ShortText. Добавлены хуки useAttendanceData и useAttendanceStats для обработки данных. Обновлен компонент Attendance с использованием новых компонентов и хуков.

src/pages/attendance/hooks/useAttendanceStats.ts

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+import { useMemo } from 'react'
+import { AttendanceData } from './useAttendanceData'
+
+export interface AttendanceStats {
+  totalLessons: number
+  averageAttendance: number
+  topStudents: Array<{
+    name: string
+    attendance: number
+    attendancePercent: number
+  }>
+  lessonsAttendance: Array<{
+    name: string
+    date: string
+    attendancePercent: number
+  }>
+}
+
+export const useAttendanceStats = (data: AttendanceData): AttendanceStats => {
+  return useMemo(() => {
+    if (!data.attendance || !data.students.length) {
+      return {
+        totalLessons: 0,
+        averageAttendance: 0,
+        topStudents: [],
+        lessonsAttendance: []
+      }
+    }
+
+    const totalLessons = data.attendance.length
+    
+    // Рассчитываем посещаемость для каждого студента
+    const studentAttendance = data.students.map(student => {
+      let attended = 0
+      
+      data.attendance.forEach(lesson => {
+        if (lesson.students.some(s => s.sub === student.sub)) {
+          attended++
+        }
+      })
+      
+      return {
+        student,
+        name: student.value,
+        attendance: attended,
+        attendancePercent: totalLessons > 0 ? (attended / totalLessons) * 100 : 0
+      }
+    })
+    
+    // Рассчитываем статистику посещаемости для каждого урока
+    const lessonsAttendance = data.attendance.map(lesson => {
+      const attendedStudents = lesson.students.length
+      const attendancePercent = data.students.length > 0 
+        ? (attendedStudents / data.students.length) * 100 
+        : 0
+        
+      return {
+        name: lesson.name,
+        date: lesson.date,
+        attendancePercent
+      }
+    })
+    
+    // Выбираем топ-3 студентов по посещаемости
+    const topStudents = [...studentAttendance]
+      .sort((a, b) => b.attendance - a.attendance)
+      .slice(0, 3)
+      .map(student => ({
+        name: student.name,
+        attendance: student.attendance,
+        attendancePercent: student.attendancePercent
+      }))
+    
+    // Считаем среднюю посещаемость
+    const totalAttendance = studentAttendance.reduce((sum, student) => sum + student.attendance, 0)
+    const averageAttendance = data.students.length > 0 && totalLessons > 0
+      ? (totalAttendance / (data.students.length * totalLessons)) * 100
+      : 0
+      
+    return {
+      totalLessons,
+      averageAttendance,
+      topStudents,
+      lessonsAttendance
+    }
+  }, [data])
+}