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}
sqlite3_free(q3);
q3 = NULL;
q3 = sqlite3_mprintf("DELETE FROM msgs WHERE chat_id=%i;", chat_id);
if (!dc_sqlite3_execute(context->sql, q3)) {
goto cleanup;
}
sqlite3_free(q3);
q3 = NULL;
q3 = sqlite3_mprintf("DELETE FROM chats_contacts WHERE chat_id=%i;", chat_id);
if (!dc_sqlite3_execute(context->sql, q3)) {
goto cleanup;
}
sqlite3_free(q3);
q3 = NULL;
q3 = sqlite3_mprintf("DELETE FROM chats WHERE id=%i;", chat_id);
if (!dc_sqlite3_execute(context->sql, q3)) {
goto cleanup;
}
sqlite3_free(q3);
q3 = NULL;
dc_sqlite3_commit(context->sql);
pending_transaction = 0;
context->cb(context, DC_EVENT_MSGS_CHANGED, 0, 0);
dc_job_kill_action(context, DC_JOB_HOUSEKEEPING);
dc_job_add(context, DC_JOB_HOUSEKEEPING, 0, NULL, DC_HOUSEKEEPING_DELAY_SEC);
cleanup:
if (pending_transaction) { dc_sqlite3_rollback(context->sql); }
dc_chat_unref(obj);
sqlite3_free(q3);
}
/*******************************************************************************
* Handle Group Chats
******************************************************************************/
#define IS_SELF_IN_GROUP (dc_is_contact_in_chat(context, chat_id, DC_CONTACT_ID_SELF)==1)
#define DO_SEND_STATUS_MAILS (dc_param_get_int(chat->param, DC_PARAM_UNPROMOTED, 0)==0)
int dc_is_group_explicitly_left(dc_context_t* context, const char* grpid)
{
sqlite3_stmt* stmt = dc_sqlite3_prepare(context->sql, "SELECT id FROM leftgrps WHERE grpid=?;");
sqlite3_bind_text (stmt, 1, grpid, -1, SQLITE_STATIC);
int ret = (sqlite3_step(stmt)==SQLITE_ROW);
sqlite3_finalize(stmt);
return ret;
}
void dc_set_group_explicitly_left(dc_context_t* context, const char* grpid)
{
if (!dc_is_group_explicitly_left(context, grpid))
{
sqlite3_stmt* stmt = dc_sqlite3_prepare(context->sql, "INSERT INTO leftgrps (grpid) VALUES(?);");
sqlite3_bind_text (stmt, 1, grpid, -1, SQLITE_STATIC);
sqlite3_step(stmt);
sqlite3_finalize(stmt);
}
}
static int real_group_exists(dc_context_t* context, uint32_t chat_id)
{
// check if a group or a verified group exists under the given ID
sqlite3_stmt* stmt = NULL;
int ret = 0;
if (context==NULL || context->magic!=DC_CONTEXT_MAGIC || context->sql->cobj==NULL
|| chat_id<=DC_CHAT_ID_LAST_SPECIAL) {
return 0;
}
stmt = dc_sqlite3_prepare(context->sql,
"SELECT id FROM chats "
" WHERE id=? "
" AND (type=" DC_STRINGIFY(DC_CHAT_TYPE_GROUP) " OR type=" DC_STRINGIFY(DC_CHAT_TYPE_VERIFIED_GROUP) ");");
sqlite3_bind_int(stmt, 1, chat_id);
if (sqlite3_step(stmt)==SQLITE_ROW) {
ret = 1;
}
sqlite3_finalize(stmt);
return ret;
}
/**
* Create a new group chat.
*
* After creation,