legacy code.cpp

#include<iostream>
#include<fstream>
#include<string>
#include <vector>
using namespace std;

class password {
private:
    string x, y;
    string decrypt(string password) {
        for (int i = 0; i < password.size(); i++) {
            password[i] += password.size() + i;
        }
        return password;
    }
    string encrypt(string password) {
        for (int i = 0; i < password.size(); i++) {
            password[i] -= password.size() + i;
        }
        return password;
    }
public:
    password(void) {
        fstream file;
        file.open("password.txt", ios::in);
        if (file.is_open()) {
            getline(file, y);
            y = decrypt(y);
            file.close();
        }
    }

    void set_password(string p) {
        x = p;
    }

    bool check_password() {
        if (x == y) return false;
        return true;
    }

    bool check_legitpassword(string password) {
        bool haslower = true, hasupper = true, hasdigit = true;

        if (password.length() < 8) {
            cout << "your password must have at least <8> digits.\n";
            return false;
        }

        for (int i = 0; i < password.length(); i++) {
            if (islower(password[i]))
                haslower = false;
            if (isupper(password[i]))
                hasupper = false;
            if (isdigit(password[i]))
                hasdigit = false;
        }

        if (haslower)
            cout << "your password must have at least <1> lowercase character.\n";
        else if (hasupper)
            cout << "your password must have at least <1> uppercase character.\n";
        else if (hasdigit)
            cout << "your password must have at least <1> digit character.\n";
        if (haslower || hasupper || hasdigit)
            return false;
        else
            return true;
    }

    void set_newpassword(void) {
        cout << "enter the old password: ";
        do {
            cin >> x;
            if (!check_password()) {
                cout << "please enter a new password or < 0 > to return to menu : ";
                while (true) {
                    cin >> x;
                    if (x != "0" && check_legitpassword(x)) {
                        cout << "password has changed successfully\n";
                        fstream file;
                        file.open("password.txt", ios::out);
                        if (file.is_open()) {
                            file << encrypt(x);
                            file.close();
                        }
                        y = x;
                        break;
                    }
                    else if (x == "0") break;
                    else cout << "please enter a new password with match constraints or < 0 > to return to menu: ";
                }
            }
            else if (x != "0" && check_password()) cout << "please enter a correct password or < 0 > to return to menu: ";
        } while (check_password() && x != "0");
    }
};

class Patient {
private:
    string name, BloodType, mobile, age, id;
public:
    // constructors
    Patient() {}
    Patient(string name, string bloodType, string age, string mobile, string id);
    // setters
    void add_new(vector<Patient>& obj1, int* p) {
        string x1;
        cout << "\nPatient #" << *p + 1 << "\n\n";
        cout << "name: ";
        cin.ignore();
        getline(cin, x1);
        obj1[*p].setName(x1);

        while (true) {
            cout << "Blood type: ";
            cin >> x1;
            if (check_BloodType(x1))
            {
                obj1[*p].setBloodType(x1);
                break;
            }
            else cout << "\nInvalid Blood type\n\n";
        }

        while (true) {
            cout << "mobile: ";
            cin >> x1;
            if (check_mobile(x1))
            {
                obj1[*p].setMobile(x1);
                break;
            }
            else cout << "\nInvalid phone number\n\n";
        }

        while (true) {
            cout << "id: ";
            cin >> x1;
            if (check_ID(x1))
            {
                obj1[*p].setID(x1);
                break;
            }
            else cout << "\nInvalid ID\n\n";
        }

        while (true)
        {
            cout << "Enter age: ";
            cin >> x1;
            if (check_age(x1))
            {
                obj1[*p].setAge(x1);
                break;
            }
            else
                cout << "\nage is Invalid\n\n";
        }
        (*p)++;
        app_data(obj1, *(p));
        cout << "\nPatient #" << *p << " has been added successfully\n";
        cout << "\nthe current number of patients: " << *p << "\n\n";
    }
    void edit_data(vector<Patient>& obj1, int* p) {
        string x;
        cout << "Enter the patient's id: ";
        cin >> x;
        for (int i = 0; i < *p; i++)
        {
            if (x == obj1[i].getID())
            {
                string y;
                char choice;
                cout << "Editing data of patient #" << i + 1 << endl;
                while (true) {
                    cout << "1 edit name\n";
                    cout << "2 edit blood type\n";
                    cout << "3 edit mobile\n";
                    cout << "4 edit ID\n";
                    cout << "5 edit age\n";
                    cout << "6 return to main menu\n";
                    cout << "Please enter your choice: ";
                    cin >> choice;
                    switch (choice)
                    {
                    case '1':
                        cout << "Enter the new name: ";
                        cin.ignore();
                        getline(cin, y);
                        obj1[i].setName(y);
                        break;
                    case '2':
                        while (true) {
                            cout << "Enter the new blood type: ";
                            cin >> y;
                            if (obj1[i].check_BloodType(y))
                            {
                                obj1[i].setBloodType(y);
                                break;
                            }
                            else cout << "\nInvalid Blood type\n\n";
                        }
                        break;
                    case '3':
                        while (true) {
                            cout << "Enter the new mobile: ";
                            cin >> y;
                            if (obj1[i].check_mobile(y))
                            {
                                obj1[i].setMobile(y);
                                break;
                            }
                            else cout << "\nInvalid phone number\n\n";
                        }
                        break;
                    case '4':
                        while (true) {
                            cout << "Enter the new id: ";
                            cin >> y;
                            if (obj1[i].check_ID(y))
                            {
                                obj1[i].setID(y);
                                break;
                            }
                            else cout << "\nInvalid ID\n\n";
                        }
                        break;
                    case '5':
                        while (true) {
                            cout << "Enter the new age: ";
                            cin >> y;
                            if (obj1[i].check_age(y))
                            {
                                obj1[i].setAge(y);
                                break;
                            }
                            else cout << "\nInvalid Age\n\n";
                        }
                        break;
                    case '6':
                        return;
                    default:
                        break;
                    }
                }
            }
        }
        cout << "\nid not found\n\n";
    }
    void refrish(int* p) {
        fstream file;
        file.open("data.txt", ios::in);
        if (file.is_open()) {
            string t;
            while (!file.eof()) {
                getline(file, t);
                if (t.size())
                    (*p)++;
                file >> ws;
            }
            file.close();
        }
    }
    void update(vector<Patient>& obj, int num) {
        fstream file;
        file.open("data.txt", ios::in);
        if (file.is_open()) {
            string temp;
            for (int i = 0; i < num; i++) {
                file >> ws;
                getline(file, temp);
                obj[i].setName(temp.substr(0, temp.find(",")));
                obj[i].setBloodType(temp.substr(temp.find(",") + 1, temp.find(";") - temp.find(",") - 1));
                obj[i].setMobile(temp.substr(temp.find(";") + 1, temp.find("/") - temp.find(";") - 1));
                obj[i].setID(temp.substr(temp.find("/") + 1, temp.find(":") - temp.find("/") - 1));
                obj[i].setAge(temp.substr(temp.find(":") + 1, temp.find(".") - temp.find(":") - 1));
                file >> ws;
            }
            file.close();
        }
    }
    void overwrite_data(vector<Patient>& obj, int num) {
        fstream file;
        file.open("data.txt", ios::out);
        if (file.is_open()) {
            for (int i = 0; i < num; i++)
            {
                file << obj[i].getName() << ",";
                file << obj[i].getBloodType() << ";";
                file << obj[i].getMobile() << "/";
                file << obj[i].getID() << ":";
                file << obj[i].getAge() << ".\n";
            }
        }
        file.close();
    }
    void app_data(vector<Patient>& obj, int num) {
        fstream file;
        num--;
        file.open("data.txt", ios::app);
        if (file.is_open()) {
            file << obj[num].getName() << ",";
            file << obj[num].getBloodType() << ";";
            file << obj[num].getMobile() << "/";
            file << obj[num].getID() << ":";
            file << obj[num].getAge() << ".\n";
            file.close();
        }
    }
    int delete_element(vector<Patient>& obj1, int* p) {
        string x;
        char y;
        cout << "Enter id of patient: ";
        cin >> x;
        cout << "\nare you sure about this deletion process? Enter <Y> or <N>  ";
        cin >> y;
        if (y == 'y' || y == 'Y')
        {
            for (int i = 0; i < *p; i++)
            {
                if (x == obj1[i].getID())
                {
                    obj1.erase(obj1.begin() + i);
                    (*p)--;
                    overwrite_data(obj1, *p);
                    cout << "\npatient's data has been deleted successfully\n";
                    cout << "\nthe current number of patients: " << *p << "\n\n";
                    return 0;
                }
            }
            cout << "\nid not found\n\n";
            return 0;
        }
        if (y == 'n' || y == 'N')
            return 0;

    }
    void search(vector<Patient>obj, int num)
    {
        string x;
        int i;
        char choice;
        while (true) {
            cout << "1 search by id\n";
            cout << "2 search by number\n";
            cout << "3 search for donors\n";
            cout << "4 search by Blood Type\n";
            cout << "5 return to main menu\n";
            cout << "\nEnter your choice: ";
            cin >> choice;
            switch (choice)
            {
            case '1':
            cout << "Enter the patient's id: ";
            cin >> x;
            for (int i = 0; i < num; i++)
            {
                if (x == obj[i].getID()) {
                    printData(obj, i);
                    t = false;
                }
            }
            if(t)cout << "\nID was not found\n\n";
            break;
            case '2':
                cout << "the no. of patient : ";
                cin >> i;
                Search_no(obj, num, i);
                break;
            case '3':
                while (true)
                {
                    cout << "Enter recipient blood type: ";
                    cin >> x;
                    if (check_BloodType(x))
                    {
                        search_recip(obj, num, x);
                        break;
                    }
                    else
                        cout << "\nInvalid Blood Type\n\n";
                }
                break;
            case '4':
                Search_BloodType(obj, num);
                break;
            case '5':
                return;
            default:
                break;
            }
        }
    }
    void search_recip(vector<Patient>obj, int num, string x)
    {
        bool found = false;
        if (x == "AB+")
        {
            for (int i = 0; i < num; i++)
                printData(obj, i);
        }
        else if (x == "AB-")
        {
            for (int i = 0; i < num; i++)
            {
                if (obj[i].getBloodType() == "O-" || obj[i].getBloodType() == "B-" || obj[i].getBloodType() == "A-" || obj[i].getBloodType() == "AB-")
                {
                    found = true;
                    printData(obj, i);
                }
            }
            if (!found)
                cout << "No donors have been found\n";
        }

        else if (x == "A+")
        {
            for (int i = 0; i < num; i++)
            {
                if (obj[i].getBloodType() == "O-" || obj[i].getBloodType() == "O+" || obj[i].getBloodType() == "A-" || obj[i].getBloodType() == "A+")
                {
                    found = true;
                    printData(obj, i);
                }
            }
            if (!found)
                cout << "No donors have been found\n";
        }

        else if (x == "A-")
        {
            for (int i = 0; i < num; i++)
            {
                if (obj[i].getBloodType() == "O-" || obj[i].getBloodType() == "A-")
                {
                    found = true;
                    printData(obj, i);
                }
            }
            if (!found)
                cout << "No donors have been found\n";
        }

        else if (x == "B+")
        {
            for (int i = 0; i < num; i++)
            {
                if (obj[i].getBloodType() == "O-" || obj[i].getBloodType() == "O+" || obj[i].getBloodType() == "B-" || obj[i].getBloodType() == "B+")
                {
                    found = true;
                    printData(obj, i);
                }
            }
            if (!found)
                cout << "No donors have been found\n";
        }

        else if (x == "B-")
        {
            for (int i = 0; i < num; i++)
            {
                if (obj[i].getBloodType() == "O-" || obj[i].getBloodType() == "B-")
                {
                    found = true;
                    printData(obj, i);
                }
            }
            if (!found)
                cout << "No donors have been found\n";
        }

        else if (x == "O+")
        {
            for (int i = 0; i < num; i++)
            {
                if (obj[i].getBloodType() == "O-" || obj[i].getBloodType() == "O+")
                {
                    found = true;
                    printData(obj, i);
                }
            }
            if (!found)
                cout << "No donors have been found\n";
        }

        else if (x == "O-")
        {
            for (int i = 0; i < num; i++)
            {
                if (obj[i].getBloodType() == "O-")
                {
                    found = true;
                    printData(obj, i);
                }
            }
            if (!found)
                cout << "No donors have been found\n";

        }
    }
    void Search_BloodType(vector<Patient>obj, int num) {

        {

            string patientbloodtype;

            while (true)

            {

                cout << "Enter blood type: ";

                cin >> patientbloodtype;

                if (check_BloodType(patientbloodtype))

                    break;

                else

                    cout << "\nInvalid Blood Type\n\n";

            }

            system("CLS");

            cout << "============================================================================================" << endl;

            cout << "==================================| Data that was found |===================================" << endl;

            cout << "============================================================================================" << endl;

            cout << "    NO :        |          BloodType:                 |      ID       " << endl;

            cout << "____________________________________________________________________________________________" << endl;

            int counter = 0;

            for (int i = 0; i < num; i++)

            {

                if (obj[i].getBloodType() == patientbloodtype)

                {

                    counter++;

                    cout << "    " << counter << "                         " << obj[i].getBloodType() << "                            " << obj[i].getID() << endl;

                }

            }

            cout << "=============================================================================================" << endl;

            if (counter == 0)

            {

                cout << "\nNo Records Found !\n\n";

            }

        }

    }
    void Search_no(vector<Patient>obj, int num, int i) {
        if (i > 0 && i <= num) {
            i--;
            printData(obj, i);
        }
        else cout << "it is not found\n";
    }
    bool check_BloodType(string x) {
        if (x == "A+" || x == "A-")
            return true;
        else if (x == "B+" || x == "B-")
            return true;
        else if (x == "O+" || x == "O-")
            return true;
        else if (x == "AB+" || x == "AB-")
            return true;
        else
            return false;
    }
    bool check_ID(string x) {
        if (x.find_first_not_of("0123456789") == string::npos && x.length() == 14)
            return true;
        else
            return false;
    }
    bool check_mobile(string x) {
        if (x.find_first_not_of("0123456789") == string::npos && x.length() == 11)
            return true;
        else
            return false;
    }
    bool check_age(string x) {
        if (x.find_first_not_of("0123456789") == string::npos)
            return true;
        else
            return false;
    }
    void setName(string name);
    void setBloodType(string BloodType);
    void setAge(string age);
    void setMobile(string mobile);
    void setID(string id);
    // getters
    string getName() { return name; }
    string getBloodType() { return BloodType; }
    string getMobile() { return mobile; }
    string getAge() { return age; }
    string getID() { return id; }
    // other functions
    void readData();
    void printData(vector<Patient>obj, int i);
};


Patient::Patient(string name, string bloodType, string age, string mobile, string id) {
    this->name = name;
    this->BloodType = bloodType;
    this->age = age;
    this->mobile = mobile;
    this->id = id;
}

void Patient::setName(string name) {
    this->name = name;
}

void Patient::setBloodType(string BloodType) {
    this->BloodType = BloodType;
}

void Patient::setMobile(string mobile) {
    this->mobile = mobile;
}

void Patient::setAge(string age) {
    this->age = age;
}

void Patient::setID(string id) {
    this->id = id;
}

void Patient::readData() {
    string name, bloodType, mobile, age, id;
    cout << "Please enter the patient's data: \n";
    cout << "Name: ";
    cin.ignore();
    getline(cin, name); setName(name);
    cout << "Blood Type: ";
    cin >> BloodType; setBloodType(bloodType);
    cout << "Mobile: ";
    cin >> mobile; setMobile(mobile);
    cout << "Age: ";
    cin >> age; setAge(age);
    cout << "ID: ";
    cin >> id; setID(id);
    cout << endl;
}

void Patient::printData(vector<Patient>obj, int i) {
    cout << "*********************\n";
    cout << "Name: " << obj[i].getName() << endl;
    cout << "Blood Type: " << obj[i].getBloodType() << endl;
    cout << "Mobile: " << obj[i].getMobile() << endl;
    cout << "ID: " << obj[i].getID() << endl;
    cout << "Age: " << obj[i].getAge() << endl;
    cout << "*********************\n";
}

int main() {
    string my_password;
    vector<Patient>obj(100);
    password owner;
    do {
        cout << "please enter a correct password or < 0 > to quit: ";
        cin >> my_password;
        owner.set_password(my_password);
        if (my_password == "0") {
            cout << "see you soon\n";
            return 0;
        }
    } while (owner.check_password());
    int num = 0;
    obj[0].refrish(&num);
    obj[0].update(obj, num);
    cout << "\nthe number of patients in the system : " << num << endl;
    char tester;
    while (true) {
        cout << "\nto change your password ,| enter <C> |\n";
        cout << "to Search               ,| enter <S> |\n";
        cout << "to Add data             ,| enter <A> |\n";
        cout << "to delete data          ,| enter <D> |\n";
        cout << "to Edit data            ,| enter <E> |\n";
        cout << "to clear screen         ,| enter <X> |\n";
        cout << "to Quit                 ,| enter <Q> |\n";
        cout << "Enter your option: ";
        cin >> tester;
        switch (tester){
        case 'C':
        case 'c':
            owner.set_newpassword();
            break;
        case 'S':
        case 's':
            obj[0].search(obj, num);
            break;
        case 'A':
        case 'a':
            obj[0].add_new(obj, &num);
            break;
        case 'E':
        case 'e':
            obj[0].edit_data(obj, &num);
            obj[0].overwrite_data(obj, num);
            break;
        case 'D':
        case 'd':
            obj[0].delete_element(obj, &num);
            break;
        case 'Q':
        case 'q':
            cout << "See you son.\n";
            return 0;
            break;
        default:
            system("cls");
            break;
        }
    }
}