package com.fsck.k9.mail;

import java.util.Date;
import java.util.HashSet;

public abstract class Message implements Part, Body
{
    public enum RecipientType
    {
        TO, CC, BCC,
    }

    protected String mUid;

    protected HashSet<Flag> mFlags = new HashSet<Flag>();

    protected Date mInternalDate;

    protected Folder mFolder;

    public String getUid()
    {
        return mUid;
    }

    public void setUid(String uid)
    {
        this.mUid = uid;
    }

    public Folder getFolder()
    {
        return mFolder;
    }

    public abstract String getSubject() throws MessagingException;

    public abstract void setSubject(String subject) throws MessagingException;

    public Date getInternalDate()
    {
        return mInternalDate;
    }

    public void setInternalDate(Date internalDate)
    {
        this.mInternalDate = internalDate;
    }

    public abstract Date getReceivedDate() throws MessagingException;

    public abstract Date getSentDate() throws MessagingException;

    public abstract void setSentDate(Date sentDate) throws MessagingException;

    public abstract Address[] getRecipients(RecipientType type) throws MessagingException;

    public abstract void setRecipients(RecipientType type, Address[] addresses)
    throws MessagingException;

    public void setRecipient(RecipientType type, Address address) throws MessagingException
    {
        setRecipients(type, new Address[]
                      {
                          address
                      });
    }

    public abstract Address[] getFrom() throws MessagingException;

    public abstract void setFrom(Address from) throws MessagingException;

    public abstract Address[] getReplyTo() throws MessagingException;

    public abstract void setReplyTo(Address[] from) throws MessagingException;

    public abstract String getMessageId() throws MessagingException;

    public abstract void setInReplyTo(String inReplyTo) throws MessagingException;

    public abstract String[] getReferences() throws MessagingException;

    public abstract void setReferences(String references) throws MessagingException;

    public abstract Body getBody() throws MessagingException;

    public abstract String getContentType() throws MessagingException;

    public abstract void addHeader(String name, String value) throws MessagingException;

    public abstract void setHeader(String name, String value) throws MessagingException;

    public abstract String[] getHeader(String name) throws MessagingException;

    public abstract void removeHeader(String name) throws MessagingException;

    public abstract void setBody(Body body) throws MessagingException;

    public boolean isMimeType(String mimeType) throws MessagingException
    {
        return getContentType().startsWith(mimeType);
    }

    public void delete(String trashFolderName) throws MessagingException {} ;

    /*
     * TODO Refactor Flags at some point to be able to store user defined flags.
     */
    public Flag[] getFlags()
    {
        return mFlags.toArray(new Flag[] {});
    }

    public void setFlag(Flag flag, boolean set) throws MessagingException
    {
        if (set)
        {
            mFlags.add(flag);
        }
        else
        {
            mFlags.remove(flag);
        }
    }

    /**
     * This method calls setFlag(Flag, boolean)
     * @param flags
     * @param set
     */
    public void setFlags(Flag[] flags, boolean set) throws MessagingException
    {
        for (Flag flag : flags)
        {
            setFlag(flag, set);
        }
    }

    public boolean isSet(Flag flag)
    {
        return mFlags.contains(flag);
    }

    public abstract void saveChanges() throws MessagingException;

    public abstract void setEncoding(String encoding);
}