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/*
 * Copyright (C) 2019, 2020 Konsulko Group
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <QDebug>

#include "callmessage.h"
#include "eventmessage.h"
#include "responsemessage.h"
#include "messagefactory.h"
#include "messageengine.h"
#include "messageenginefactory.h"
#include "map.h"

Map::Map (QUrl &url, QObject * parent) :
    QObject(parent)
{
    m_mloop = MessageEngineFactory::getInstance().getMessageEngine(url);
    QObject::connect(m_mloop.get(), &MessageEngine::connected, this, &Map::onConnected);
    QObject::connect(m_mloop.get(), &MessageEngine::disconnected, this, &Map::onDisconnected);
    QObject::connect(m_mloop.get(), &MessageEngine::messageReceived, this, &Map::onMessageReceived);
}

Map::~Map()
{
}

void Map::compose(QString recipient, QString message)
{
    std::unique_ptr<Message> msg = MessageFactory::getInstance().createOutboundMessage(MessageId::Call);
    CallMessage* btmsg = static_cast<CallMessage*>(msg.get());
    QJsonObject parameter;
    parameter.insert("recipient", recipient);
    parameter.insert("message", message);
    btmsg->createRequest("bluetooth-map", "compose", parameter);
    m_mloop->sendMessage(std::move(msg));
}

void Map::message(QString handle)
{
    std::unique_ptr<Message> msg = MessageFactory::getInstance().createOutboundMessage(MessageId::Call);
    CallMessage* btmsg = static_cast<CallMessage*>(msg.get());
    QJsonObject parameter;
    parameter.insert("handle", handle);
    btmsg->createRequest("bluetooth-map", "message", parameter);
    m_mloop->sendMessage(std::move(msg));
}

void Map::listMessages(QString folder)
{
    std::unique_ptr<Message> msg = MessageFactory::getInstance().createOutboundMessage(MessageId::Call);
    CallMessage* btmsg = static_cast<CallMessage*>(msg.get());
    QJsonObject parameter;
    parameter.insert("folder", folder);
    btmsg->createRequest("bluetooth-map", "list_messages", parameter);
    m_mloop->sendMessage(std::move(msg));
}

void Map::onConnected()
{
    std::unique_ptr<Message> msg = MessageFactory::getInstance().createOutboundMessage(MessageId::Call);
    CallMessage* btmsg = static_cast<CallMessage*>(msg.get());
    QJsonObject parameter;
    parameter.insert("value", "notification");
    btmsg->createRequest("bluetooth-map", "subscribe", parameter);
    m_mloop->sendMessage(std::move(msg));

    listMessages();
}

void Map::onDisconnected()
{
    std::unique_ptr<Message> msg = MessageFactory::getInstance().createOutboundMessage(MessageId::Call);
    CallMessage* btmsg = static_cast<CallMessage*>(msg.get());
    QJsonObject parameter;
    parameter.insert("value", "notification");
    btmsg->createRequest("bluetooth-map", "unsubscribe", parameter);
    m_mloop->sendMessage(std::move(msg));
}

void Map::onMessageReceived(std::shared_ptr<Message> msg)
{
    if (msg->isEvent()) {
        std::shared_ptr<EventMessage> tmsg = std::static_pointer_cast<EventMessage>(msg);

        if (tmsg->eventApi() != "bluetooth-map")
            return;
        if (tmsg->eventName() == "notification") {
            emit notificationEvent(tmsg->eventData().toVariantMap());
        }
    } else if (msg->isReply()) {
        auto rmsg = std::static_pointer_cast<ResponseMessage>(msg);
        if (rmsg->requestVerb() == "list_messages") {
            QString folder = rmsg->requestParameters().value("folder").toString();
            QVariantMap listing = rmsg->replyData().value("messages").toObject().toVariantMap();
            emit listMessagesResult(folder, listing);
        } else if (rmsg->requestVerb() == "message") {
            QString handle = rmsg->requestParameters().value("handle").toString();
            emit messageResult(handle, rmsg->replyData().toVariantMap());
        }
    }
}
s="n">path_is_absolute) name_size = snprintf(buf, buf_size, "%s", name) + 1; else name_size = snprintf(buf, buf_size, "%s/%s", runtime_dir, name) + 1; if (name_size > (int)buf_size) return -ENAMETOOLONG; return 0; } /* socket */ ssize_t icipc_socket_write(int fd, const uint8_t * buffer, size_t size) { size_t total_written = 0; size_t n; assert(fd >= 0); assert(buffer != NULL); assert(size > 0); do { n = write(fd, buffer, size); if (n < size) { if (errno == EINTR) continue; if (errno == EAGAIN || errno == EWOULDBLOCK) return total_written; return -1; } total_written += n; } while (total_written < size); return total_written; } ssize_t icipc_socket_read(int fd, uint8_t ** buffer, size_t *max_size) { ssize_t n; ssize_t size; size_t offset = 0; assert(buffer); assert(*buffer); assert(max_size); assert(*max_size > 0); again: size = *max_size - offset; n = read(fd, *buffer + offset, size); if (n == 0) return 0; /* check for errors */ if (n < 0) { if (errno == EINTR) goto again; if (errno == EAGAIN || errno == EWOULDBLOCK) return offset; return -1; } /* realloc if we need more space, and read again */ if (n >= size) { *max_size += *max_size; *buffer = reallocarray(*buffer, *max_size, sizeof(uint8_t)); offset += n; goto again; } return offset + n; } /* epoll thread */ bool icipc_epoll_thread_init( EpollThread *self, int socket_fd, icipc_epoll_thread_event_func_t sock_func, icipc_epoll_thread_event_func_t other_func, void *data) { struct epoll_event event = {0}; self->socket_fd = socket_fd; self->event_fd = -1; self->epoll_fd = -1; /* create event fd */ self->event_fd = eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK); if (self->event_fd == -1) goto error; /* create epoll fd */ self->epoll_fd = epoll_create1(EPOLL_CLOEXEC); if (self->epoll_fd == -1) goto error; /* poll socket fd */ event.events = EPOLLIN; event.data.fd = self->socket_fd; if (epoll_ctl(self->epoll_fd, EPOLL_CTL_ADD, self->socket_fd, &event) != 0) goto error; /* poll event fd */ event.events = EPOLLIN; event.data.fd = self->event_fd; if (epoll_ctl(self->epoll_fd, EPOLL_CTL_ADD, self->event_fd, &event) != 0) goto error; self->socket_event_func = sock_func; self->other_event_func = other_func; self->event_data = data; return true; error: if (self->epoll_fd != -1) close(self->epoll_fd); if (self->event_fd != -1) close(self->event_fd); return false; } static void *epoll_thread_run(void *data) { EpollThread *self = data; bool exit = false; while (!exit) { /* wait for events */ struct epoll_event ep[MAX_POLL_EVENTS]; int n = epoll_wait(self->epoll_fd, ep, MAX_POLL_EVENTS, -1); if (n < 0) { icipc_log_error ("epoll_thread: failed to wait for event: %s", strerror(errno)); continue; } for (int i = 0; i < n; i++) { /* socket fd */ if (ep[i].data.fd == self->socket_fd) { if (self->socket_event_func) self->socket_event_func(self, ep[i].data.fd, self->event_data); } /* event fd */ else if (ep[i].data.fd == self->event_fd) { uint64_t stop = 0; ssize_t res = read(ep[i].data.fd, &stop, sizeof(uint64_t)); if (res == sizeof(uint64_t) && stop == 1) exit = true; } /* other */ else { if (self->other_event_func) self->other_event_func(self, ep[i].data.fd, self->event_data); } } } return NULL; } bool icipc_epoll_thread_start(EpollThread *self) { return pthread_create(&self->thread, NULL, epoll_thread_run, self) == 0; } void icipc_epoll_thread_stop(EpollThread *self) { uint64_t value = 1; ssize_t res = write(self->event_fd, &value, sizeof(uint64_t)); if (res == sizeof(uint64_t)) pthread_join(self->thread, NULL); } void icipc_epoll_thread_destroy(EpollThread *self) { close(self->epoll_fd); close(self->event_fd); }