// new version of the combo class that stores a pointer to a string instead of
// a stack-allocated string

#include <iostream>
#include <string>

using namespace std;

class combo {
public:
    combo(int initial_value = 0, const string & initial_text = "foo") {
        value = initial_value;
        text = new string(initial_text);
        cout << "in main constructor" << endl;
    }
    
    combo(const combo & rhs) {
        value = rhs.value;
        // default is shallow copy: text = rhs.text
        text = new string(*rhs.text);
        cout << "in copy constructor" << endl;
    }

    ~combo() {
        delete text;
        cout << "in destructor" << endl;
    }

    combo & operator=(const combo & rhs) {
        if (this != &rhs) {
            value = rhs.value;
            // default is shallow copy: text = rhs.text
            // We could delete the old string and make a new one, as in:
            //     delete text;
            //     text = new string(*rhs.text);
            // We can also just let the string object do the copying
            *text = *rhs.text;
        }
        cout << "in assignment operator" << endl;
        return *this;
    }

    int get_value() const {
        return value;
    }

    const string & get_text() const {
        return *text;
    }
private:
    int value;
    string * text;
};

int main() {
    /*
    string * s = new string("hello there");
    cout << "s = " << *s << " with length " << (*s).size() << endl;
    cout << "s = " << *s << " with length " << s->size() << endl;
    string * t = s;

    delete s;
    delete t;
    */
    
    combo c1(23, "bar");
    combo c2(71);
    combo c3;
    cout << "c1: " << c1.get_text() << " " << c1.get_value() << endl;
    cout << "c2: " << c2.get_text() << " " << c2.get_value() << endl;
    cout << "c3: " << c3.get_text() << " " << c3.get_value() << endl;

    cout << "before inner scope" << endl;
    {
        combo c(12);
    }
    cout << "after inner scope" << endl;

    combo c4 = c1;
    // combo c4(c1);
    cout << "c4: " << c4.get_text() << " " << c4.get_value() << endl;

    combo c5;
    c5 = c2;

    return 0;
}