1 files changed, 45 insertions, 0 deletions
diff --git a/src/group.ts b/src/group.ts
new file mode 100644
index 0000000..e840ffd
--- /dev/null
+++ b/src/group.ts
@@ -0,0 +1,45 @@
+import type { Student } from "./student-common.ts";
+
+/**
+ * Class to represent a Group of Students.
+ */
+class Group {
+	name: string;
+	students: Array<Student> = [];
+
+	constructor(name: string, students?: Array<Student>) {
+		this.name = name;
+		if (typeof students !== "undefined") {
+			this.students = students;
+		}
+	}
+
+	setStudents(students: Array<Student>) {
+		this.students = students;
+	}
+
+	addStudent(student: Student) {
+		this.students.push(student);
+	}
+
+	async getStudents() {
+		return this.students;
+	}
+}
+
+const groups = new Map();
+
+function buildGroups(students: Array<Student>) {
+	for (const student of students) {
+		let group = groups.get(student.group);
+
+		if (!group) {
+			group = new Group(student.group);
+			groups.set(student.group, group);
+		}
+
+		group.addStudent(student);
+	}
+}
+
+export { Group, buildGroups, groups as _groups };