#include "Teacher.h"

Teacher::Teacher(void)
{
    numStudents = 0;
    setName(("default teacher"));
    myFavorites = new Student*[ MAX_FAVORITES ];
    for (int i = 0; i < MAX_FAVORITES; i++) {
        myFavorites[i] = NULL;
    }
}                               

Teacher::Teacher(string teacher_name)
{
    numStudents = 0;
    setName(teacher_name);
    myCourse = NULL;
    myFavorites = new Student*[ MAX_FAVORITES ];
    for (int i = 0; i < MAX_FAVORITES; i++)
        myFavorites[i] = NULL;
}

Teacher::~Teacher(void)
{
    myCourse->removeTeacher();
    delete myFavorites;
}

void Teacher::addToMyFavorites(Student *fav)
{
    bool inclass = false;
    for (int i = 0; i < myCourse->getCapacity(); i++) {
        if (myCourse->students[i] == fav)
            inclass = true;
    }
    if (inclass) {
        for (int i = 0; i < Teacher::MAX_FAVORITES; i++) {
            if (!myFavorites[i]) {
                myFavorites[i] = fav;
                return;
            } else if (myFavorites[i] == fav)
                cout << fav->getName() << " is already a favorite of " << name << endl;
        }
        cout << name << " already has too many favorites" << endl;
    } else {
        cout << fav->getName() << " is not in " << name << "'s class" << endl;
    }
}

void Teacher::setMyCourse(Course *c)
{
    if (myCourse && myCourse != c) {
        cout << name << " already has a course!" << endl;
    } else if (c && c->getTeacher() && c->getTeacher() != this) {
        cout << c->getName() << " already has a teacher!" << endl;
    } else if ((c && c->getTeacher() == this) || myCourse == c) {
        cout << name << " already teaches " << c->getName() << endl;
    } else {
        myCourse = c;
        c->teacher = this;
        numStudents = c->enrollmentNumber;
    }
}

void Teacher::setName(string n) { name = n; }

int Teacher::getNumStudents(void) { return numStudents; }

Course *Teacher::getMyCourse(void) { return myCourse; }

string Teacher::getName(void) { return name; }

void Teacher::printTeacher(void)
{
    cout << "Teacher " << name << " has:" << endl;
    cout << getNumStudents() << " students" << endl;
    if (myCourse)
        cout << "teaches a course named " << myCourse->getName() << endl;
    else
        cout << "does not teach a course" << endl;
    cout << "and has favorite students named:";
    for (int i = 0; i < Teacher::MAX_FAVORITES; i++) {
        if (myFavorites[i])
            cout << " " << myFavorites[i]->getName() << ",";
    }
    cout << endl << endl;
}