#include <iostream>
#include <fstream>
#include <string.h>
using namespace std;
class car
{
public:
    int id,model;
    char name[10],ownerofcar[10];
};
void read(){
    car obj2;
                ifstream infile;
                infile.open("car.txt",ios::in);
                if(infile.is_open())
                {
                    int id=0;
                    while(! infile.eof())
                    {
                        infile.read((char*)&obj2,sizeof(obj2));
                        if(obj2.id != id)
                        {
                            cout<< obj2.id << "\t" << obj2.model << "\t" << obj2.name << "\t" <<obj2.ownerofcar <<endl;
                            id = obj2.id;
                        }

                    }
                }
                else cout<< "Can't open the file";
                infile.close();
}
int main()
{
    char t;
    cout<<"**Welcome**\n";
    do{
        cout<<"Enter the number of opertion you want\n";
        cout<<"1-Write on the file\n";
        cout<<"2-Read from the file\n";
        cout<<"3-search on the file\n";
        cout<<"4-Copy the file\n";
        cout<<"5-length of the file\n";
        cout<<"6-update on the file\n";
        cout<<"7-Delete from the file\n";
        int s;
        cin>>s;
        switch(s){
            case 1:
                {
                car obj1;
                char c;
                ofstream outfile(("car.txt"));
                do
                {
                    cout<< "Enter Car ID: ";
                    cin>>obj1.id;
                    cout<< "Enter Car Model: ";
                    cin>>obj1.model;
                    cout<< "Enter  Car Name: ";
                    cin>>obj1.name;
                    cout<< "Enter Owner Of The Car: ";
                    cin>>obj1.ownerofcar;
                    outfile.write((char*)&obj1,sizeof(obj1));
                    cout<< "Enter another record? (y/n) ";
                    cin>>c;
                }
                while(c=='y');
                outfile.close();
                cout<<"Do you want to do anothe opertion (y\\n): \n";
                cin>>t;
                break;
            }

            case 2:
                {
                read();
                cout<<"Do you want to do anothe opertion (y\\n): \n";
                cin>>t;
                break;
            }
            case 3:
                {
                    car obj;
                    bool found=false;
                    char str[10];
                    cout<< "Enter owner name to search for: ";
                    cin>>str;
                    ifstream infile("car.txt");
                    while(!infile.eof())
                    {
                        infile.read((char*)&obj,sizeof(obj));
                        if(strcmp(str,obj.ownerofcar)==0)
                        {
                            found = true;
                            cout<< "ID"  << "\t"<< "Model" << "\t"<< "Name" << "\t"<< "Owner Of Car\n";
                            cout << "----------------------------------" << endl;
                            cout << obj.id << "\t" << obj.model << "\t"<< obj.name << "\t"<<obj.ownerofcar <<endl;
                            break;
                        }
                    }
                    if(!found)
                            cout << "No items matched your search \n";

                    infile.close();
                    cout<<"Do you want to do anothe opertion (y\\n): \n";
                    cin>>t;
                    break;
                }
                case 4:
                    {
                        char ch;
                        ifstream infile("Car.txt");
                        ofstream outfile("copied file.txt");
                        while(infile.get(ch))
                        {
                        outfile.put(ch);
                        }
                        infile.close();
                        cout<<"Do you want to do anothe opertion (y\\n): \n";
                        cin>>t;
                        break;
                    }
                case 5:
                    {
                        int ch1;
                        ifstream infile("Car.txt");
                        infile.seekg(0,ios::end);
                        cout<<" length of the file:"<<infile.tellg()<<endl;
                        infile.close();
                        cout<<"Do you want to do anothe opertion (y\\n): \n";
                        cin>>t;
                        break;
                    }
                    case 6:
                {
                        car obj;
                        bool found=false;
                        char str[10];
                        cout<< "Enter owner name to search for: ";
                        cin>>str;
                        fstream infile("car.txt",ios::in|ios::out);
                        infile.read((char*)&obj,sizeof(obj));
                        while(!infile.eof())
                        {
                        if(strcmp(str,obj.ownerofcar)==0)
                        {
                            cout<<"Enter the new model for "<<str<<" ";
                            cin>>obj.model;
                            int curpos=infile.tellg();
                            int namesize=sizeof(str);
                            infile.seekp(curpos-namesize,ios::beg);
                            infile.write((char*)&obj,sizeof(obj));
                            found = true;
                            //infile.seekg(curpos-namesize,ios::beg);
                            //infile.read((char*)&obj,sizeof(obj));
                            cout<< "ID"  << "\t"<< "Model" << "\t"<< "Name" << "\t"<< "Owner Of Car\n";
                            cout << "----------------------------------" << endl;
                            cout << obj.id << "\t" << obj.model << "\t"<< obj.name << "\t"<<obj.ownerofcar <<endl;
                        break;
                        }
                        //infile.read((char*)&obj,sizeof(obj));
                        }
                    if(!found)
                        cout << "No items matched your search \n";

                    infile.close();
                    cout<<"Do you want to do anothe opertion (y\\n): \n";
                    cin>>t;
                        break;
                    }
            case 7:
                {
                    car obj;
                    bool found=false;
                    char str[10];
                    cout<< "Enter owner name to delete for: ";
                    cin>>str;
                    ifstream infile("car.txt",ios::in);
                    ofstream outfile("temp.txt",ios::out);
                    while(!infile.eof())
                    {
                        infile.read((char*)&obj,sizeof(obj));
                        if(strcmp(str,obj.ownerofcar)!=0)
                        {
                            outfile.write((char*)&obj,sizeof(obj));
                            found=true;
                        }
                        infile.read((char*)&obj,sizeof(obj));
                    }
                    if(!found)
                        cout << "No items matched your search \n";
                    infile.close();
                    outfile.close();
                    remove("car.txt");
                    rename("temp.txt","car.txt");
                    read();
                    cout<<"Do you want to do anothe opertion (y\\n): \n";
                    cin>>t;
                    break;
                }
        }
    }while(t=='y');
    cout<<"**THE END**";
    return 0;
}