package ru.project.search;

import ru.project.collection.MyLinkedList;
import ru.project.collection.MyList;
import ru.project.student.Student;

public class StudentSearchService {
  private final StudentSearchCriteria criteria;

  public StudentSearchService(StudentSearchCriteria criteria) {
    if (criteria == null) {
      throw new IllegalArgumentException("Criteria must not be null");
    }
    this.criteria = criteria;
  }

  public MyList<Student> find(MyList<Student> students) {
    if (students == null) {
      return new MyLinkedList<>();
    }
    MyList<Student> result = new MyLinkedList<>();
    for (int i = 0; i < students.size(); i++) {
      Student s = students.get(i);
      if (criteria.matches(s)) {
        result.add(s);
      }
    }
    return result;
  }
}