Added parser function

src/app/parser/schedule.ts

@@ -0,0 +1,97 @@
+import { Day } from '@/shared/model/day'
+import { Lesson } from '@/shared/model/lesson'
+import { HTMLElement } from 'node-html-parser'
+
+const dayTitleParser = (text: string) => {
+  const [dateString, week] = text.trim().split(' / ')
+  const weekNumber = Number(week.trim().match(/^(\d+) неделя$/)![1])
+  const [, day, month, year] = dateString.trim().match(/^[а-яА-Я]+ (\d{1,2})\.(\d{1,2})\.(\d{4})$/)!
+  const date = new Date(Number(year), Number(month) - 1, Number(day), 12)
+  return { date, weekNumber }
+}
+
+const parseLesson = (row: HTMLElement): Lesson => {
+  const cells = row.querySelectorAll(':scope > td')
+
+  const isChange = cells.every(td => td.getAttribute('bgcolor') === 'ffffbb')
+
+  const timeCell = cells[1].childNodes
+  const [startTime, endTime] = timeCell[0].textContent.trim().split(' – ')
+  const time: Lesson['time'] = {
+    start: startTime,
+    end: endTime
+  }
+  if (timeCell[2]) {
+    time.hint = timeCell[2].textContent.trim()
+  }
+
+  const subject = ''
+  const teacher = ''
+
+  const place: Lesson['place'] = {
+    address: '1',
+    classroom: 1
+  }
+
+  const topic = cells[4].textContent.trim()
+
+  const resources: Lesson['resources'] = []
+  // {
+  //   type: 'link'
+  //   title: string
+  //   url: string
+  // } []
+
+  return {
+    isChange,
+    time,
+    type: cells[2].textContent.trim(),
+    subject, 
+    teacher,
+    place,
+    ...(topic && { topic }),
+    resources,
+    homework: cells[6].textContent.trim()
+  }
+}
+
+export function parsePage(document: HTMLElement): Day[] {
+  const tables = Array.from(document.querySelectorAll('body > table'))
+  const table = tables.find(table => table.querySelector(':scope > tbody > tr:first-child')?.textContent?.trim() === 'ПС-7')
+  const rows = Array.from(table!.querySelectorAll(':scope > tbody > tr')).slice(1)
+
+  const days = []
+  // eslint-disable-next-line @typescript-eslint/ban-ts-comment
+  // @ts-ignore
+  let dayInfo: Day = {}
+  let dayLessons: Lesson[] = []
+  let previousRowIsDayTitle = false
+  for (let i = 0; i < rows.length; i++) {
+    const row = rows[i]
+
+    const isDivider = row.textContent?.trim() === ''
+    const isDayTitle = dayLessons.length === 0 && !('date' in dayInfo)
+    const isTableHeader = previousRowIsDayTitle
+
+    if (isDivider) {
+      days.push({ ...dayInfo, lessons: dayLessons })
+      dayLessons = []
+      // eslint-disable-next-line @typescript-eslint/ban-ts-comment
+      // @ts-ignore
+      dayInfo = {}
+      previousRowIsDayTitle = false
+    } else if (isTableHeader) {
+      previousRowIsDayTitle = false
+      continue
+    } else if (isDayTitle) {
+      const { date, weekNumber } = dayTitleParser(row.querySelector('h3')!.textContent!)
+      dayInfo.date = date
+      dayInfo.weekNumber = weekNumber
+      previousRowIsDayTitle = true
+    } else {
+      dayLessons.push(parseLesson(row))
+    }
+  }
+
+  return days
+}