MIT/X Consortium License

(C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>

Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit
/*
 * chat_state.c
 * vim: expandtab:ts=4:sts=4:sw=4
 *
 * Copyright (C) 2012 - 2019 James Booth <boothj5@gmail.com>
 *
 * This file is part of Profanity.
 *
 * Profanity is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Profanity is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Profanity.  If not, see <https://www.gnu.org/licenses/>.
 *
 * In addition, as a special exception, the copyright holders give permission to
 * link the code of portions of this program with the OpenSSL library under
 * certain conditions as described in each individual source file, and
 * distribute linked combinations including the two.
 *
 * You must obey the GNU General Public License in all respects for all of the
 * code used other than OpenSSL. If you modify file(s) with this exception, you
 * may extend this exception to your version of the file(s), but you are not
 * obligated to do so. If you do not wish to do so, delete this exception
 * statement from your version. If you delete this exception statement from all
 * source files in the program, then also delete it here.
 *
 */

#include "config.h"

#include <stdlib.h>
#include <assert.h>

#include <glib.h>

#include "config/preferences.h"
#include "ui/window_list.h"
#include "ui/win_types.h"
#include "xmpp/xmpp.h"
#include "xmpp/chat_state.h"
#include "xmpp/chat_session.h"

#define PAUSED_TIMEOUT   10.0
#define INACTIVE_TIMEOUT 30.0

static void _send_if_supported(const char* const barejid, void (*send_func)(const char* const));

ChatState*
chat_state_new(void)
{
    ChatState* new_state = malloc(sizeof(struct prof_chat_state_t));
    new_state->type = CHAT_STATE_GONE;
    new_state->timer = g_timer_new();

    return new_state;
}

void
chat_state_free(ChatState* state)
{
    if (state && state->timer != NULL) {
        g_timer_destroy(state->timer);
    }
    free(state);
}

void
chat_state_handle_idle(const char* const barejid, ChatState* state)
{
    gdouble elapsed = g_timer_elapsed(state->timer, NULL);

    // TYPING -> PAUSED
    if (state->type == CHAT_STATE_COMPOSING && elapsed > PAUSED_TIMEOUT) {
        state->type = CHAT_STATE_PAUSED;
        g_timer_start(state->timer);
        if (prefs_get_boolean(PREF_STATES) && prefs_get_boolean(PREF_OUTTYPE)) {
            _send_if_supported(barejid, message_send_paused);
        }
        return;
    }

    // PAUSED|ACTIVE -> INACTIVE
    if ((state->type == CHAT_STATE_PAUSED || state->type == CHAT_STATE_ACTIVE) && elapsed > INACTIVE_TIMEOUT) {
        state->type = CHAT_STATE_INACTIVE;
        g_timer_start(state->timer);
        if (prefs_get_boolean(PREF_STATES)) {
            _send_if_supported(barejid, message_send_inactive);
        }
        return;
    }

    // INACTIVE -> GONE
    if (state->type == CHAT_STATE_INACTIVE) {
        if (prefs_get_gone() != 0 && (elapsed > (prefs_get_gone() * 60.0))) {
            ChatSession* session = chat_session_get(barejid);
            if (session) {
                // never move to GONE when resource override
                if (!session->resource_override) {
                    if (prefs_get_boolean(PREF_STATES)) {
                        _send_if_supported(barejid, message_send_gone);
                    }
                    chat_session_remove(barejid);
                    state->type = CHAT_STATE_GONE;
                    g_timer_start(state->timer);
                }
            } else {
                if (prefs_get_boolean(PREF_STATES)) {
                    message_send_gone(barejid);
                }
                state->type = CHAT_STATE_GONE;
                g_timer_start(state->timer);
            }
            return;
        }
    }
}

void
chat_state_handle_typing(const char* const barejid, ChatState* state)
{
    // ACTIVE|INACTIVE|PAUSED|GONE -> COMPOSING
    if (state->type != CHAT_STATE_COMPOSING) {
        state->type = CHAT_STATE_COMPOSING;
        g_timer_start(state->timer);
        if (prefs_get_boolean(PREF_STATES) && prefs_get_boolean(PREF_OUTTYPE)) {
            _send_if_supported(barejid, message_send_composing);
        }
    }
}

void
chat_state_active(ChatState* state)
{
    state->type = CHAT_STATE_ACTIVE;
    g_timer_start(state->timer);
}

void
chat_state_gone(const char* const barejid, ChatState* state)
{
    if (state->type != CHAT_STATE_GONE) {
        if (prefs_get_boolean(PREF_STATES)) {
            _send_if_supported(barejid, message_send_gone);
        }
        state->type = CHAT_STATE_GONE;
        g_timer_start(state->timer);
    }
}

void
chat_state_idle(void)
{
    jabber_conn_status_t status = connection_get_status();
    if (status == JABBER_CONNECTED) {
        GSList* recipients = wins_get_chat_recipients();
        GSList* curr = recipients;

        while (curr) {
            char* barejid = curr->data;
            ProfChatWin* chatwin = wins_get_chat(barejid);
            chat_state_handle_idle(chatwin->barejid, chatwin->state);
            curr = g_slist_next(curr);
        }

        if (recipients) {
            g_slist_free(recipients);
        }
    }
}

void
chat_state_activity(void)
{
    jabber_conn_status_t status = connection_get_status();
    ProfWin* current = wins_get_current();

    if ((status == JABBER_CONNECTED) && (current->type == WIN_CHAT)) {
        ProfChatWin* chatwin = (ProfChatWin*)current;
        assert(chatwin->memcheck == PROFCHATWIN_MEMCHECK);
        chat_state_handle_typing(chatwin->barejid, chatwin->state);
    }
}

static void
_send_if_supported(const char* const barejid, void (*send_func)(const char* const))
{
    gboolean send = TRUE;
    GString* jid = g_string_new(barejid);
    ChatSession* session = chat_session_get(barejid);
    if (session) {
        if (session->send_states) {
            g_string_append(jid, "/");
            g_string_append(jid, session->resource);
        } else {
            send = FALSE;
        }
    }

    if (send) {
        send_func(jid->str);
    }

    g_string_free(jid, TRUE);
}