database.cpp

#include "Database.hpp"
#include <iostream>
#include <fstream>
using namespace std;

void Database::loadFromFile() {
    ifstream file(FILENAME);
    if (!file.is_open()) return;
    string name, phone;
    while (file >> name >> phone) {
        data[name] = phone;
    }
    file.close();
}

void Database::saveToFile() {
    ofstream file(FILENAME);
    for (auto& pair : data) {
        file << pair.first << " " << pair.second << "\n";
    }
    file.close();
}

void Database::addData() {
    string name, phone;
    cout << "Enter name: ";
    cin >> name;
    cout << "Enter phone: ";
    cin >> phone;
    data[name] = phone;
    saveToFile();
    cout << "✓ Saved: " << name << " → " << phone << "\n";
}

void Database::findData() {
    string name;
    cout << "Enter name to find: ";
    cin >> name;
    if (data.count(name)) {
        cout << "Found: " << name << " → " << data[name] << "\n";
    } else {
        cout << "✗ Not found.\n";
    }
}

void Database::run() {
    loadFromFile();
    int choice;
    do {
        cout << "\n=== SimpleDB ===\n";
        cout << "1. Add Data\n";
        cout << "2. Find Data\n";
        cout << "3. Exit\n";
        cout << "Choice: ";
        cin >> choice;

        switch (choice) {
            case 1: addData();  break;
            case 2: findData(); break;
            case 3: cout << "Goodbye!\n"; break;
            default: cout << "Invalid choice.\n";
        }
    } while (choice != 3);
}