// PhonebookList.h

#include <iostream>
#include <map>
#include <string>

#include "PhoneBookEntry.h"

class PhoneBookList
{
public:
    PhoneBookList() : itr_current_entry(m_entries.end()) {}

    void add( const std::string & name,
              const std::string & number );
    void display_current_entry() const;
    void move_to_next();
    void edit_current(const std::string & new_number);
    void find(const std::string & name);
    bool empty() const { return m_entries.empty(); }
    void read_file( const std::string & file_name );
    void write_file( const std::string & file_name ) const;

private:
    std::map<std::string, PhoneBookEntry> m_entries;
    std::map<std::string, PhoneBookEntry>::iterator
        itr_current_entry;
};

inline void PhoneBookList::add(const std::string & name,
                               const std::string & number) {
    auto result =
//            m_entries.insert(
//                std::pair<std::string, PhoneBookEntry>(
//                    name, PhoneBookEntry(name, number)));
//            m_entries.insert({name, PhoneBookEntry(name, number)});
        m_entries.insert({name, {name, number}});
    itr_current_entry = result.first;
}

inline void PhoneBookList::display_current_entry() const {
    if (m_entries.empty()) return;
    std::cout << itr_current_entry->second;
}

inline void PhoneBookList::move_to_next() {
    if (m_entries.empty()) return;
    ++itr_current_entry;
    if (itr_current_entry == m_entries.end()) {
        itr_current_entry = m_entries.begin();
    }
}

inline void PhoneBookList::edit_current(
        const std::string & new_number) {
    itr_current_entry->second.number = new_number;
}

inline void PhoneBookList::find(const std::string & name) {
    auto itr = m_entries.find(name);
    if (itr != m_entries.end()) itr_current_entry = itr;
}