feat: shorten teacher's name

firka/lib/core/extensions.dart

@@ -294,4 +294,26 @@ extension StringExtension on String {
     if (length == 1) this[0].toUpperCase();
     return this[0].toUpperCase() + substring(1, length);
   }
+
+  String shortenName([int start = 0]) {
+    if (length <= 16 || start >= length) {
+      return this;
+    }
+
+    int index = indexOf(" ", start);
+    if (index == -1) {
+      return this;
+    }
+
+    String string = substring(start, index);
+    if (string.endsWith(".")) {
+      return this;
+    }
+
+    return replaceRange(
+      start,
+      index,
+      "${string[0]}.",
+    ).shortenName(index - string.length + 2 + 1);
+  }
 }

firka/lib/ui/phone/widgets/lesson.dart

@@ -166,7 +166,7 @@ class LessonWidget extends StatelessWidget {
                               ),
                               showSubstitutions
                                   ? Text(
-                                      lesson.substituteTeacher!,
+                                      lesson.substituteTeacher!.shortenName(),
                                       style: appStyle.fonts.B_14R.apply(
                                         color: appStyle.colors.textSecondary,
                                       ),

firka/lib/ui/phone/widgets/lesson_big.dart

@@ -204,7 +204,7 @@ class LessonBigWidget extends StatelessWidget {
                             ),
                             if (isSubstituted)
                               Text(
-                                lesson.substituteTeacher!,
+                                lesson.substituteTeacher!.shortenName(),
                                 style: appStyle.fonts.B_14R.apply(
                                   color: appStyle.colors.textSecondary,
                                 ),