file.cpp

#include<bits/stdc++.h>
#include"movie.cpp"
#include"title.h"
using namespace std;
void create()
{
    string username;
    cout<<"Enter the username:"<<endl;
    cin>>username;
    username=username+".txt";
    ifstream file(username);
    if(file.is_open())
    {
        cout<<"username is alredy taken"<<endl;
        file.close();
        return ;
    }
    file.close();
    ofstream newfile(username);
    if(!(newfile.is_open()))
    {
        cout<<"error in creating account."<<endl;
        cout<<"please mail issue on:modhavadiyadevan189@gmail.com"<<endl;
        newfile.close();
        return ;
    }
    cout<<"enter the password:";
    string password;
    cin>>password;
    newfile<<password<<endl;
    cout<<"account created successfully"<<endl;
    newfile.close();
    return ;
}
void updatepassword(string username)
{
    ifstream file(username);
    vector<string>v;
    string line;
    while (getline(file,line))
    {
        v.push_back(line);
    }
    string password;
    cout<<"Enter the old password";
    cin>>password;
    if(password!=v[0])
    {
        cout<<"Wrong password"<<endl;
        return;
    }
    cout<<"Enter the New Password:"<<endl;
    cin>>password;
    v[0]=password;
    file.close();
    ofstream mfile(username,ios::trunc);
    for(auto it:v)
    {
        mfile<<it<<endl;
    }
    mfile.close();
    cout<<"Password Changed Successfully";
}
struct lnode
{
    string data;
    int i;
    struct lnode* next;
    lnode(string data1,int i1)
    {
        data=data1;
        i=i1;
        next=nullptr;
    }
};
void history(string username)
{
    struct lnode* head=nullptr;
    struct lnode* mover=head;
    ifstream file(username);
    string line;
    int i=0;
    while (getline(file,line))
    {
        if(i==0)
        {
            i++;
            continue;
        }
        if(head==nullptr)
        {
            head=new lnode(line,i);
            mover=head;
            i++;
            continue;
        }
        struct lnode* add=new lnode(line,i);
        mover->next=add;
        mover=add;
        i++;
    }
    file.close();
    title();
    cout<<"Watch History:"<<endl;
    mover=head;
    while(mover!=nullptr)
    {
        cout<<mover->i<<")"<<mover->data<<endl;
        mover=mover->next;
    }

}
void delhistory(string username)
{
    ifstream file(username);
    string line;
    while (getline(file,line))
    {
        break;
    }
    file.close();
    ofstream mfile(username,ios::trunc);
    mfile<<line<<endl;
    mfile.close();
    cout<<"History Clear Successfully"<<endl;
}
void delaccount(string username)
{
    remove(username.c_str());
    cout<<"Account Deleted Successfully"<<endl;

}
void account(string username)
{
    while (true)
    {
        title();
        cout<<"1)Change the password"<<endl;
        cout<<"2)View The History"<<endl;
        cout<<"3)Clear History"<<endl;
        cout<<"4)Rmove Account"<<endl;
        cout<<"5)Back"<<endl;
        char c;
        cin>>c;
        switch (c)
        {
        case '1':
            updatepassword(username);
            break;
        case '2':
            history(username);
            break;
        case '3':
            delhistory(username);
            break;
        case '4':
            delaccount(username);
            return ;
        case '5':
            return;
        default:
            cout<<"Please Select a Valid Option"<<endl;
            break;
        }
    }
    
}
void login()
{
    string username;
    cout<<"Enter the username:";
    cin>>username;
    username=username+".txt";
    ifstream file(username);
    if(!(file.is_open()))
    {
        cout<<"username does not exist"<<endl;
        cout<<"you can create new account"<<endl;
        file.close();
        return ;
    }
    string password;
    cout<<"Enter the password:";
    cin>>password;
    string line;
    while(getline(file,line))
    {
        if(line!=password)
        {
            cout<<"wrong password"<<endl;
            cout<<"if you forgot password then please contact admin on:modhavadiyadevan189@gmail.com"<<endl;
            file.close();
            return ;
        }
        break;
    }
    file.close();
    cout<<"LOGIN successfully"<<endl;
    loginstitle(username);
    while(true)
    {
        title();
        cout<<"enter the choice:"<<endl;
        cout<<"1)Enjoy movies & serials"<<endl;
        cout<<"2)account managment"<<endl;
        cout<<"3)Back"<<endl;
        char c;
        cin>>c;
        switch (c)
        {
        case '1':
            movie(username);
            break;
        case '2':
            account(username);
            break;
        case '3':
            return;
        default:
            cout<<"Please select a valid option";
            break;
        }

    }
}