#ifndef __TGL_H__
#define __TGL_H__

#include <tgl-layout.h>
#include <string.h>

#define TGL_MAX_DC_NUM 100

#define TGL_BUILD "1828"
#define TGL_VERSION "0.9-beta"

// Do not modify this structure, unless you know what you do
struct tgl_update_callback {
  void (*new_msg)(struct tgl_message *M);
  void (*marked_read)(int num, struct tgl_message *list[]);
  void (*logprintf)(const char *format, ...)  __attribute__ ((format (printf, 1, 2)));
  void (*type_notification)(tgl_peer_id_t id, struct tgl_user *U);
  void (*type_in_chat_notification)(tgl_peer_id_t id, struct tgl_user *U, tgl_peer_id_t chat_id, struct tgl_chat *C);
  void (*status_notification)(struct tgl_user *U);
  void (*user_registered)(struct tgl_user *U);
};

#define vlogprintf(verbosity_level,...) \
  do { \
    if (tgl_state.verbosity >= verbosity_level) { \
      tgl_state.callback.logprintf (__VA_ARGS__); \
    } \
  } while (0)


#define E_ERROR 0
#define E_WARNING 1
#define E_NOTICE 2
#define E_DEBUG 3

struct tgl_state {
  int our_id; // ID of logged in user
  int encr_root;
  unsigned char *encr_prime;
  int encr_param_version;
  int pts;
  int qts;
  int date;
  int seq;
  int binlog_enabled;
  int test_mode; 
  int verbosity;
  int unread_messages;

  struct dc *DC_list[TGL_MAX_DC_NUM];
  struct dc *DC_working;
  int dc_working_num;

  long long cur_uploading_bytes;
  long long cur_uploaded_bytes;
  long long cur_downloading_bytes;
  long long cur_downloaded_bytes;

  char *binlog_name;
  char *auth_file;
  char *downloads_directory;

  struct tgl_update_callback callback;
};
extern struct tgl_state tgl_state;

void tgl_reopen_binlog_for_writing (void);
void tgl_replay_log (void);

int tgl_print_stat (char *s, int len);
tgl_peer_t *tgl_peer_get (tgl_peer_id_t id);
tgl_peer_t *tgl_peer_get_by_name (const char *s);

struct tgl_message *tgl_message_get (long long id);
void tgl_peer_iterator_ex (void (*it)(tgl_peer_t *P, void *extra), void *extra);

int tgl_complete_user_list (int index, const char *text, int len, char **R);
int tgl_complete_chat_list (int index, const char *text, int len, char **R);
int tgl_complete_encr_chat_list (int index, const char *text, int len, char **R);
int tgl_complete_peer_list (int index, const char *text, int len, char **R);

#define TGL_PEER_USER 1
#define TGL_PEER_CHAT 2
#define TGL_PEER_GEO_CHAT 3
#define TGL_PEER_ENCR_CHAT 4
#define TGL_PEER_UNKNOWN 0

#define TGL_MK_USER(id) tgl_set_peer_id (TGL_PEER_USER,id)
#define TGL_MK_CHAT(id) tgl_set_peer_id (TGL_PEER_CHAT,id)
#define TGL_MK_GEO_CHAT(id) tgl_set_peer_id (TGL_PEER_GEO_CHAT,id)
#define TGL_MK_ENCR_CHAT(id) tgl_set_peer_id (TGL_PEER_ENCR_CHAT,id)
    
void tgl_set_binlog_mode (int mode);
void tgl_set_binlog_path (const char *path);
void tgl_set_auth_file_path (const char *path);
void tgl_set_download_directory (const char *path);


static inline int tgl_get_peer_type (tgl_peer_id_t id) {
  return id.type;
}

static inline int tgl_get_peer_id (tgl_peer_id_t id) {
  return id.id;
}

static inline tgl_peer_id_t tgl_set_peer_id (int type, int id) {
  tgl_peer_id_t ID;
  ID.id = id;
  ID.type = type;
  return ID;
}

static inline int tgl_cmp_peer_id (tgl_peer_id_t a, tgl_peer_id_t b) {
  return memcmp (&a, &b, sizeof (a));
}

static inline void tgl_incr_verbosity (void) {
  tgl_state.verbosity ++;
}

static inline void tgl_set_verbosity (int val) {
  tgl_state.verbosity = val;
}

static inline void tgl_set_test_mode (void) {
  tgl_state.test_mode ++;
}

void tgl_do_help_get_config (void (*callback)(void *callback_extra, int success), void *callback_extra);
void tgl_do_send_code (const char *user, void (*callback)(void *callback_extra, int success, int registered, const char *hash), void *callback_extra);
void tgl_do_phone_call (const char *user, void (*callback)(void *callback_extra, int success), void *callback_extra);
int tgl_do_send_code_result (const char *user, const char *code, void (*callback)(void *callback_extra, int success, struct tgl_user *Self), void *callback_extra) ;
int tgl_do_send_code_result_auth (const char *user, const char *code, const char *first_name, const char *last_name, void (*callback)(void *callback_extra, int success, struct tgl_user *Self), void *callback_extra);
void tgl_do_update_contact_list (void (*callback) (void *callback_extra, int success, int size, struct tgl_user *contacts[]), void *callback_extra);
void tgl_do_send_message (tgl_peer_id_t id, const char *msg, int len, void (*callback)(void *callback_extra, int success, struct tgl_message *M), void *callback_extra);
void tgl_do_send_msg (struct tgl_message *M, void (*callback)(void *callback_extra, int success, struct tgl_message *M), void *callback_extra);
void tgl_do_send_text (tgl_peer_id_t id, char *file, void (*callback)(void *callback_extra, int success, struct tgl_message *M), void *callback_extra);
void tgl_do_mark_read (tgl_peer_id_t id, void (*callback)(void *callback_extra, int success), void *callback_extra);
void tgl_do_get_history (tgl_peer_id_t id, int limit, int offline_mode, void (*callback)(void *callback_extra, int success, int size, struct tgl_message *list[]), void *callback_extra);
void tgl_do_get_dialog_list (void (*callback)(void *callback_extra, int success, int size, tgl_peer_id_t peers[], int last_msg_id[], int unread_count[]), void *callback_extra);
void tgl_do_send_photo (int type, tgl_peer_id_t to_id, char *file_name, void (*callback)(void *callback_extra, int success, struct tgl_message *M), void *callback_extra);
void tgl_do_forward_message (tgl_peer_id_t id, int n, void (*callback)(void *callback_extra, int success, struct tgl_message *M), void *callback_extra);
void tgl_do_rename_chat (tgl_peer_id_t id, char *name, void (*callback)(void *callback_extra, int success, struct tgl_message *M), void *callback_extra);
void tgl_do_get_chat_info (tgl_peer_id_t id, int offline_mode, void (*callback)(void *callback_extra, int success, struct tgl_chat *C), void *callback_extra);
void tgl_do_get_user_info (tgl_peer_id_t id, int offline_mode, void (*callback)(void *callback_extra, int success, struct tgl_user *U), void *callback_extra);
void tgl_do_load_photo (struct tgl_photo *photo, void (*callback)(void *callback_extra, int success, char *filename), void *callback_extra);
void tgl_do_load_video_thumb (struct tgl_video *video, void (*callback)(void *callback_extra, int success, char *filename), void *callback_extra);
void tgl_do_load_audio (struct tgl_video *V, void (*callback)(void *callback_extra, int success, char *filename), void *callback_extra);
void tgl_do_load_video (struct tgl_video *V, void (*callback)(void *callback_extra, int success, char *filename), void *callback_extra);
void tgl_do_load_document (struct tgl_document *V, void (*callback)(void *callback_extra, int success, char *filename), void *callback_extra);
void tgl_do_load_document_thumb (struct tgl_document *video, void (*callback)(void *callback_extra, int success, char *filename), void *callback_extra);
void tgl_do_load_encr_video (struct tgl_encr_video *V, void (*callback)(void *callback_extra, int success, char *filename), void *callback_extra);
void tgl_do_export_auth (int num, void (*callback) (void *callback_extra, int success), void *callback_extra);
void tgl_do_add_contact (const char *phone, int phone_len, const char *first_name, int first_name_len, const char *last_name, int last_name_len, int force, void (*callback)(void *callback_extra, int success, int size, struct tgl_user *users[]), void *callback_extra);
void tgl_do_msg_search (tgl_peer_id_t id, int from, int to, int limit, const char *s, void (*callback)(void *callback_extra, int success, int size, struct tgl_message *list[]), void *callback_extra);
void tgl_do_contacts_search (int limit, const char *s, void (*callback) (void *callback_extra, int success, int size, struct tgl_user *users[]), void *callback_extra);
void tgl_do_create_encr_chat_request (int user_id, void (*callback)(void *callback_extra, int success, struct tgl_secret_chat *E), void *callback_extra);
void tgl_do_create_secret_chat (tgl_peer_id_t id, void (*callback)(void *callback_extra, int success, struct tgl_secret_chat *E), void *callback_extra);
void tgl_do_accept_encr_chat_request (struct tgl_secret_chat *E, void (*callback)(void *callback_extra, int success, struct tgl_secret_chat *E), void *callback_extra);
void tgl_do_get_difference (int sync_from_start, void (*callback)(void *callback_extra, int success), void *callback_extra);
void tgl_do_add_user_to_chat (tgl_peer_id_t chat_id, tgl_peer_id_t id, int limit, void (*callback)(void *callback_extra, int success, struct tgl_message *M), void *callback_extra);
void tgl_do_del_user_from_chat (tgl_peer_id_t chat_id, tgl_peer_id_t id, void (*callback)(void *callback_extra, int success, struct tgl_message *M), void *callback_extra);
void tgl_do_create_group_chat (tgl_peer_id_t id, char *chat_topic, void (*callback)(void *callback_extra, int success, struct tgl_message *M), void *callback_extra);
void tgl_do_delete_msg (long long id, void (*callback)(void *callback_extra, int success), void *callback_extra);
void tgl_do_restore_msg (long long id, void (*callback)(void *callback_extra, int success), void *callback_extra);
void tgl_do_update_status (int online, void (*callback)(void *callback_extra, int success), void *callback_extra);

void tgl_do_visualize_key (tgl_peer_id_t id, unsigned char buf[16]);

//void tgl_do_get_suggested (void);

void tgl_do_create_keys_end (struct tgl_secret_chat *U);
void tgl_do_send_encr_chat_layer (struct tgl_secret_chat *E);
#endif