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#ifndef _nsMsgAttachmentHandler_H_
#define _nsMsgAttachmentHandler_H_

#include "nsIURL.h"
#include "nsIMimeConverter.h"
#include "nsMsgCompFields.h"
#include "nsIMsgStatusFeedback.h"
#include "nsIChannel.h"
#include "nsIMsgSend.h"
#include "nsIFileStreams.h"
#include "nsIStreamConverter.h"

#ifdef XP_MAC

#include "nsMsgAppleDouble.h"

typedef struct _AppledoubleEncodeObject
{
  appledouble_encode_object   ap_encode_obj;
  char                        *buff;          // the working buff
  PRInt32                     s_buff;         // the working buff size
  nsIOFileStream              *fileStream;    // file to hold the encoding
} AppleDoubleEncodeObject;

#endif  // XP_MAC

//
// This is a class that deals with processing remote attachments. It implements
// an nsIStreamListener interface to deal with incoming data
//
class nsMsgAttachmentHandler
{
public:
  nsMsgAttachmentHandler();
  ~nsMsgAttachmentHandler();
  

  //////////////////////////////////////////////////////////////////////
  // Object methods...
  //////////////////////////////////////////////////////////////////////
  //
public:
  nsresult              SnarfAttachment(nsMsgCompFields *compFields);
  int                   PickEncoding (const char *charset, nsIMsgSend* mime_delivery_state);
  void                  AnalyzeSnarfedFile ();      // Analyze a previously-snarfed file.
                                                    // (Currently only used for plaintext
                                                    // converted from HTML.) 
  nsresult              Abort();
  nsresult              UrlExit(nsresult status, const PRUnichar* aMsg);

private:
  nsresult              SnarfMsgAttachment(nsMsgCompFields *compFields);
  PRBool                UseUUEncode_p(void);
  void                  AnalyzeDataChunk (const char *chunk, PRInt32 chunkSize);
  nsresult              LoadDataFromFile(nsFileSpec& fSpec, nsString &sigData, PRBool charsetConversion); //A similar function already exist in nsMsgCompose!

  //////////////////////////////////////////////////////////////////////
  // Member vars...
  //////////////////////////////////////////////////////////////////////
  //
public:
  nsCOMPtr <nsIURI> mURL;
  nsFileSpec            *mFileSpec;         // The temp file to which we save it 
  nsCOMPtr<nsIFileOutputStream>  mOutFile;          
  nsIRequest            *mRequest;          // The live request used while fetching an attachment
  nsMsgCompFields       *mCompFields;       // Message composition fields for the sender
  PRBool                m_bogus_attachment; // This is to catch problem children...

#ifdef XP_MAC
  nsFileSpec            *mAppleFileSpec;    // The temp file holds the appledouble
                                            // encoding of the file we want to send.
#endif
  char                  *m_x_mac_type;      // Mac file type
  char                  *m_x_mac_creator;   // Mac file creator
  
  PRBool                m_done;
  char                  *m_charset;         // charset name 
  char                  *m_content_id;      // This is for mutipart/related Content-ID's
  char                  *m_type;            // The real type, once we know it.
  char                  *m_type_param;      // Any addition parameters to add to the content-type (other than charset, macType and maccreator)
  char                  *m_override_type;   // The type we should assume it to be
                                            // or 0, if we should get it from the
                                            // server)
  char                  *m_override_encoding; // Goes along with override_type 

  char                  *m_desired_type;    // The type it should be converted to. 
  char                  *m_description;     // For Content-Description header
  char                  *m_real_name;       // The name for the headers, if different
                                            // from the URL. 
  char                  *m_encoding;        // The encoding, once we've decided. */
  PRBool                m_already_encoded_p; // If we attach a document that is already
                                             // encoded, we just pass it through.

  PRBool                m_decrypted_p;  /* S/MIME -- when attaching a message that was
                                           encrypted, it's necessary to decrypt it first
                                           (since nobody but the original recipient can
                                           read it -- if you forward it to someone in the
                                           raw, it will be useless to them.)  This flag
                                           indicates whether decryption occurred, so that
                                           libmsg can issue appropriate warnings about
                                           doing a cleartext forward of a message that was
                                           originally encrypted. */

  PRBool                mDeleteFile;      // If this is true, Delete the file...its 
                                          // NOT the original file!

  PRBool                mMHTMLPart;           // This is true if its an MHTML part, otherwise, PR_FALSE
  PRBool                mPartUserOmissionOverride;  // This is true if the user send send the email without this part
  PRBool                mMainBody;            // True if this is a main body.

  //
  // Vars for analyzing file data...
  //
  PRUint32              m_size;         /* Some state used while filtering it */
  PRUint32              m_unprintable_count;
  PRUint32              m_highbit_count;
  PRUint32              m_ctl_count;
  PRUint32              m_null_count;
  PRUint32              m_current_column;
  PRUint32              m_max_column;
  PRUint32              m_lines;
  PRBool                m_file_analyzed;

  MimeEncoderData       *m_encoder_data;  /* Opaque state for base64/qp encoder. */
  char *                m_uri; // original uri string
  
  nsresult              GetMimeDeliveryState(nsIMsgSend** _retval);
  nsresult              SetMimeDeliveryState(nsIMsgSend* mime_delivery_state);
private:
  nsCOMPtr<nsIMsgSend>  m_mime_delivery_state;
  nsCOMPtr<nsIStreamConverter> m_mime_parser;
  nsCOMPtr<nsIChannel>  m_converter_channel;
};


#endif /* _nsMsgAttachmentHandler_H_ */
