feat: better parsing & display

app/src/main/java/agzam/vyatsu/data/remote/pdf/PdfScheduleParser.kt

@@ -2,6 +2,7 @@ package agzam.vyatsu.data.remote.pdf
 
 import agzam.vyatsu.domain.model.Day
 import agzam.vyatsu.domain.model.Lesson
+import agzam.vyatsu.domain.model.LessonType
 import agzam.vyatsu.domain.model.TimeSlot
 import android.util.Log
 import com.tom_roush.pdfbox.pdmodel.PDDocument
@@ -25,6 +26,10 @@ object PdfScheduleParser {
     private fun timeFrom(timeString: String?): LocalTime? { return runCatching { LocalTime.parse(timeString, TIME_FORMAT) }.getOrNull() }
     private fun dateFrom(dateString: String?): LocalDate? { return runCatching { LocalDate.parse(dateString, DATE_FORMAT) }.getOrNull() }
 
+    private val ROOM_REGEX = Regex("""(?<=^|\s)\d{1,2}-\d{3}[_a-zA-Zа-яА-Я]?(?=\s|$)""")
+    private val LESSON_TYPE_REGEX = Regex(LessonType.entries.joinToString(separator = "|") { Regex.escape(it.label) }.let { """(?<=^|\s)($it)(?=\s|$)""" } )
+    private val SUBGROUP_REGEX = Regex("""\d{2}\sподгруппа""", RegexOption.IGNORE_CASE)
+
     fun parse(pdfBytes: ByteArray): List<Day> {
         Log.d(TAG, "Parsing ${pdfBytes.size} bytes")
         val doc = try {
@@ -35,6 +40,8 @@ object PdfScheduleParser {
         }
 
         val days = mutableListOf<Day>()
+        var group: String? = null
+
         try {
             for (pageIndex in 0 until doc.numberOfPages) {
                 Log.v(TAG, "============ Page $pageIndex ============")
@@ -100,9 +107,13 @@ object PdfScheduleParser {
                     }
                 }
 
-
                 for (dayCell in daysColumn.cells) {
                     val day = content(dayCell).split(' ')
+                    if(day.size == 1 && day.first() == "День") {
+                        val groupCell = select(lessonsColumn, dayCell).firstOrNull() ?: continue
+                        group = content(groupCell)
+                        continue
+                    }
                     if(day.size != 2) continue // XXX: добавить защиту от заголовка и выбрасывать исключения вместо пропуска?
 
                     val date = dateFrom(day[1]) ?: continue
@@ -124,7 +135,55 @@ object PdfScheduleParser {
                             val content = content(lessonCell)
                             Log.v(TAG, "- $content")
                             // TODO: парсинг контента лекции
-                            lessons.add(Lesson(raw=content))
+
+                            // Поиск кабинета в строке, ибо он последний, если их несколько - то скорее всего разделение на подгруппы
+                            var found = 0
+                            var currentStart = 0
+                            for (roomMatch in ROOM_REGEX.findAll(content)) {
+                                found++
+
+                                val raw = content.substring(currentStart, roomMatch.range.last + 1)
+                                currentStart = roomMatch.range.last + 1
+
+                                // Предполагаемый формат: [группа], [XX подгруппа] <предмет> <тип> [id + тип] <ФИО> <кабинет>
+
+                                val room = roomMatch.value
+
+                                val typeMatch = LESSON_TYPE_REGEX.findAll(raw).toList()
+                                if(typeMatch.isEmpty()) {
+                                    lessons.add(Lesson(
+                                        raw=raw,
+                                        room=room,
+                                    ))
+                                    continue
+                                }
+                                var subject = raw.substring(0, typeMatch.first().range.first).trim() // TODO: сейчас [группа], [XX подгруппа] <предмет> - можно достать подгруппу
+                                val type = LessonType.fromRaw(typeMatch.first().value.trim())
+                                val teacher = raw.substring(typeMatch.last().range.last+1, raw.length - room.length).trim()
+                                var subgroup: String? = null
+                                Log.d(TAG, subject + " " + group)
+                                if(group != null && subject.startsWith("$group,")) {
+                                    subject = subject.substring(group.length + 1).trim()
+                                    val subgroupMatch = SUBGROUP_REGEX.find(subject)
+                                    if(subgroupMatch != null) {
+                                        subgroup = subgroupMatch.value.trim()
+                                        subject = subject.removeRange(subgroupMatch.range).trim()
+                                    }
+                                }
+
+
+                                lessons.add(Lesson(
+                                    raw=raw,
+                                    subject=subject,
+                                    room=room,
+                                    type=type,
+                                    teacher=teacher,
+                                    subgroup=subgroup
+                                ))
+                            }
+
+                            if(found == 0) lessons.add(Lesson(raw=content))
+
                         }
                         intervals.add(TimeSlot(start = start, end = end, lessons = lessons))
                     }

app/src/main/java/agzam/vyatsu/ui/schedule/ScheduleScreen.kt

@@ -285,13 +285,18 @@ private fun LessonSlot(slotIndex: Int, slot: TimeSlot) {
         } else {
             slot.lessons.forEach { lesson ->
                 Column(Modifier.fillMaxWidth().padding(vertical = 2.dp)) {
+                    Text(
+                        lesson.type.label,
+                        style = MaterialTheme.typography.bodySmall,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant
+                    )
+
                     Text(
                         lesson.subject?.takeIf { it.isNotBlank() } ?: lesson.raw,
                         style = MaterialTheme.typography.bodyLarge
                     )
                     Text(
                         listOfNotNull(
-                            lesson.type.label,
                             lesson.subgroup,
                             lesson.teacher,
                             lesson.room