/**
 * Represents a user of a holiday website.
 * 
 * @George Wilkinson
 * @13/11/23
 */

import java.util.ArrayList;
public class Member
{
    // Creates a String for variable @email.
    private String email;
    
    // Creates an integer for variable @membershipNumber.
    private int membershipNumber;
    
    // Creates a boolean for variable @loggedInStatus.
    private boolean loggedInStatus;
    
    //Creates a new pointer to a Holiday object.
    private Holiday holiday;

    // Creates a new pointer to a Website object.
    private Website website;
    
    //Holds a list of friends / companions a member has.
    private ArrayList<Friend> companions = new ArrayList<Friend>();
    
    // Stores the balance of the member.
    private double money;
    
    /**
     * Default Constructor for objects of Class Member.
     */
    public Member()
    {
        email = "john.doe@topstravel.co.uk";
        membershipNumber = 1;
        loggedInStatus = false;
        money = 500.0;
    }
    
    /**
     * Constructor for objects of class Member
     */
    public Member( String email, int membershipNumber )
    {
        // initialise instance variables
        this.email = email;
        this.membershipNumber = membershipNumber;
        loggedInStatus = false;
        money = 0.0;
    }
    
    /**
     * Returns the value of @email.
     */
    public String getEmail()
    {
        return email;
    }
    
    /**
     * Returns the value of @membershipNumber.
     */
    public int getMembershipNumber()
    {
        return membershipNumber;
    }
    
    /**
     * Returns the value of @loggedInStatus.
     */
    public boolean getLoggedInStatus()
    {
        return loggedInStatus;
    }
    
    /**
     * Returns the current selected holiday object.
     */
    public Holiday getHoliday()
    {
        return holiday;
    }
    
    /**
     * Returns the current logged in website object.
     */
    public Website getWebsite()
    {
        return website;
    }
    
    /**
     * Returns the current balance of the member
     */
    public double getMoney()
    {
        return money;
    }
    
    /**
     * Returns the companions arrayList
     */
    public ArrayList<Friend> getCompanions()
    {
        return companions;
    }
    
    /**
     * Get the size of the companions list
     */
    public int getNumberOfCompanions()
    {
        return companions.size();
    }
    
    /**
     * Replaces the value of @email with a new value.
     */
    public void setEmail( String email )
    {
        this.email = email;
    }
    
    /**
     * Replaces the value of @membershipNumber with new value.
     */
    public void setMembershipNumber( int membershipNumber )
    {
        this.membershipNumber = membershipNumber;
    }
    
    /**
     * Replaces the value of @loggedInStatus with new value.
     */
    public void setLoggedInStatus( boolean loggedInStatus )
    {
        this.loggedInStatus = loggedInStatus;
    }
    
    /**
     * Sets the object pointed to by the member.
     */
    public void setWebsite( Website website )
    {
        this.website = website;
    }
    
    /**
     * Sets the object pointed to by the member.
     * Currently used to clear the member's checkout after paying.
     */
    public void setHoliday( Holiday holiday )
    {
        this.holiday = holiday;
    }
    
    /**
     * Sets the value of the money variable to a new value
     */
    public void setMoney( double money )
    {
        this.money = money;
    }
    
    /**
     * Stores a friend / companion in the companions arrayList.
     */
    public void storeFriend( Friend friend )
    {
        companions.add( friend );
    }
    
    /**
     * Lists the value of each friend object in the companions list.
     */
    public void listFriends()
    {
        for( Friend friendMessage : companions )
        {
            System.out.println( friendMessage.toString() );
        }
    }
    
    /**
     * Allows member to select a holiday object, provided they are logged into a website.
     */
    public void selectHoliday( Holiday holiday )
    {
        if( loggedInStatus )
        {
            if ( checkMoney( holiday.getPrice() ) )
            {                
                this.holiday = holiday;
                System.out.println( "member ID: " + membershipNumber );
                System.out.println( "holiday ref number: " + holiday.getRefNumber() );
                System.out.println( "holiday type: " + holiday.getType() );
                System.out.println( "holiday price: £" + holiday.getPrice() );
            }
            else
                whoCannotPay( holiday.getPrice() );
        }
        else {
            System.out.println( "You are not logged in" );
        }
    }
    
    /**
     * Allows member to pay for a holiday, provided they are logged in, passing itself to website.checkout().
     */
    public void payForHoliday()
    {
        if( loggedInStatus )
        {
            // Collect the cost of the holiday from each friend, and add to main member.
            for( Friend friend : companions )
            { 
                // Negate amount from friend.
                friend.setMoney( friend.getMoney() - holiday.getPrice() );
                // Add amount to member.
                setMoney( getMoney() + holiday.getPrice() );
            }
            // Since the amount must be taken here, the member will be credited later.
            money -= ( holiday.getPrice() * ( getNumberOfCompanions() + 1 ) );
            //Pass current member to the checkout method of website
            website.checkout( this );
        }
        else {
            System.out.println( "You are not logged in" );
        }
    }
    
    /**
     * Returns the current state of field variables as a string, with newlines after each.
     */
    public String toString() 
    {
        return ( "membership number : " + this.membershipNumber + "\n" + "email : " + this.email + "\n" + "logged in status : " + this.loggedInStatus );
    }
    
    /**
     * Checks if each person buying the holiday can afford it, returning a true or false.
     */
    private boolean checkMoney( int holidayPrice )
    {
        if( money >= holidayPrice )
        {
            boolean allCanAfford = true;
            for( Friend friend : companions )
            {
                if( friend.getMoney() <= holidayPrice )
                {
                    allCanAfford = false;
                    break;
                }
            }
            return allCanAfford;
        }
        else
            return false;
    }
    
    public void whoCannotPay( int holidayPrice )
    {
        if( money < holidayPrice )
            System.out.println( membershipNumber + " has insufficient money to afford this holiday");
        for( Friend friend : companions )
        {
            if( friend.getMoney() < holidayPrice )
            {
                System.out.println( friend.getName() + " has insufficient money to afford this holiday");
            }
        }
    }
}