// This file is under GNU General Public License 3.0

 // see LICENSE.txt

 #pragma once

 #define _EXPORT_PEP_ENGINE_DLL

 #include <libetpan/libetpan.h>

 #include <libetpan/mailmime.h>

 #include <libetpan/mailmime_encode.h>

 #include "resource_id.h"

 #include "stringpair.h"

 #include "timestamp.h"

 struct mailmime * part_new_empty(

         struct mailmime_content * content,

         struct mailmime_fields * mime_fields,

         stringpair_list_t* param_keyvals,        

         int force_single

     );

 struct mailmime * get_pgp_encrypted_part(void);

 struct mailmime * get_text_part(

         pEp_rid_list_t* resource,

         const char * mime_type,

         const char * text,

         size_t length,

         int encoding_type

     );

 struct mailmime * get_file_part(

         pEp_rid_list_t* resource,

         const char * mime_type,

         char * data,

         size_t length,

         bool set_attachment_forward_comment

     );

 struct mailmime * part_multiple_new(const char *type);

 typedef void *(*_new_func_t)(void *);

 struct mailimf_field * _new_field(

         int type,

         _new_func_t new_func,

         void *value

     );

 void _free_field(struct mailimf_field *field);

 int _append_field(

         clist *list,

         int type,

         _new_func_t new_func,

         void *value

     );

 struct mailimf_date_time * timestamp_to_etpantime(const timestamp *ts);

 timestamp * etpantime_to_timestamp(const struct mailimf_date_time *et);

 struct mailimf_mailbox * mailbox_from_string(

         const char *name,

         const char *address

     );

 struct mailimf_field * create_optional_field(

         const char *field,

         const char *value

     );

 int _append_optional_field(

         clist *list,

         const char *field,

         const char *value

     );

 clist * _get_fields(struct mailmime * mime);

 struct mailmime_content * _get_content(struct mailmime * mime);

 char * _get_filename_or_cid(struct mailmime *mime);

 pEp_rid_list_t* _get_resource_id_list(struct mailmime *mime);

 char* _build_uri(char* uri_prefix, char* resource);

 bool _is_multipart(struct mailmime_content *content, const char *subtype);

 bool _is_PGP_MIME(struct mailmime_content *content);

 bool _is_text_part(struct mailmime_content *content, const char *subtype);

 bool must_field_value_be_encoded(const char* field_value);

 bool must_chunk_be_encoded(const void* value, size_t size, bool ignore_fws);

 int _get_content_type(

         const struct mailmime_content *content,

         char **type,

         char **charset

     );