#pragma once

#include "pEpEngine.h"

#ifdef __cplusplus

extern "C" {

#endif

// update_identity() - update identity information

//

//  parameters:

//      session (in)        session to use

//      identity (inout)    identity information of communication partner

//

//  caveat:

//      if this function returns PEP_ct_unknown or PEP_ct_key_expired in

//      identity->comm_type, the caller must insert the identity into the

//      asynchronous management implementation, so retrieve_next_identity()

//      will return this identity later

//      at least identity->address must be a non-empty UTF-8 string as input

DYNAMIC_API PEP_STATUS update_identity(

        PEP_SESSION session, pEp_identity * identity

    );

// myself() - ensures that the own identity is being complete

//

//  parameters:

//      session (in)        session to use

//      identity (inout)    identity of local user

//                          at least .address, .username, .user_id must be set

//

//  return value:

//      PEP_STATUS_OK if identity could be completed or was already complete,

//      any other value on error

//

//  caveat:

//      this function generates a keypair on demand; because it's synchronous

//      it can need a decent amount of time to return

//      if you need to do this asynchronous, you need to return an identity

//      with retrieve_next_identity() where pEp_identity.me is true

DYNAMIC_API PEP_STATUS myself(PEP_SESSION session, pEp_identity * identity);

// retrieve_next_identity() - callback being called by do_keymanagement()

//

//  parameters:

//      management (in)     data structure to deliver (implementation defined)

//

//  return value:

//      identity to check or NULL to terminate do_keymanagement()

//      if given identity must be created with new_identity()

//      the identity struct is going to the ownership of this library

//      it must not be freed by the callee

//

//  caveat:

//      this callback has to block until an identity or NULL can be returned

//      an implementation is not provided by this library; instead it has to be

//      implemented by the user of this library

typedef pEp_identity *(*retrieve_next_identity_t)(void *management);

// examine_identity() - callback for appending to queue

//

//  parameters:

//      ident (in)          identity to examine

//      management (in)     data structure to deliver (implementation defined)

//

//  return value:

//      0 if identity was added successfully to queue or nonzero otherwise

typedef int (*examine_identity_t)(pEp_identity *ident, void *management);

// register_examine_function() - register examine_identity() callback

//

//  parameters:

//      session (in)            session to use

//      examine_identity (in)   examine_identity() function to register

//      management (in)     data structure to deliver (implementation defined)

DYNAMIC_API PEP_STATUS register_examine_function(

        PEP_SESSION session, 

        examine_identity_t examine_identity,

        void *management

    );

// do_keymanagement() - function to be run on an extra thread

//

//  parameters:

//      retrieve_next_identity  pointer to retrieve_next_identity() callback

//                              which returns at least a valid address field in

//                              the identity struct

//      management              management data to give to keymanagement

//                              (implementation defined)

//

//  return value:

//      PEP_STATUS_OK if thread has to terminate successfully or any other

//      value on failure

//

//  caveat:

//      to ensure proper working of this library, a thread has to be started

//      with this function immediately after initialization

//      do_keymanagement() calls retrieve_next_identity(management)

DYNAMIC_API PEP_STATUS do_keymanagement(

        retrieve_next_identity_t retrieve_next_identity,

        void *management

    );

// key_compromized() - mark key as being compromized

//

//  parameters:

//      session (in)        session to use

//      fpr (in)            key which was compromized

DYNAMIC_API PEP_STATUS key_compromized(PEP_SESSION session, const char *fpr);

// trust_personal_key() - mark a key as trusted with a person

//

//  parameters:

//      session (in)        session to use

//      ident (in)          person and key to trust in

//

//  caveat:

//      the fields user_id, address and fpr must be supplied

DYNAMIC_API PEP_STATUS trust_personal_key(

        PEP_SESSION session,

        pEp_identity *ident

    );

#ifdef __cplusplus

}

#endif