/*
 * Copyright (c) 2017, 2018, 2019 TOYOTA MOTOR CORPORATION
 *
 * 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 <QFileInfo>
#include "homescreenhandler.h"
#include <functional>
#include <QProcess>
#include <dirent.h>
#include <stdio.h>
#include "hmi-debug.h"

#define BUF_SIZE 1024
void* HomescreenHandler::myThis = 0;

HomescreenHandler::HomescreenHandler(QObject *parent) :
    QObject(parent),
    mp_qhs(NULL),
    current_application("launcher")
{
}

HomescreenHandler::~HomescreenHandler()
{
    if (mp_qhs != NULL) {
        delete mp_qhs;
    }
}

void HomescreenHandler::init(int port, const char *token, QLibWindowmanager *qwm, QString myname)
{
    mp_qhs = new QLibHomeScreen();
    mp_qhs->init(port, token);

    myThis = this;
    mp_qwm = qwm;
    m_myname = myname;

    mp_qhs->registerCallback(nullptr, HomescreenHandler::onRep_static);

    mp_qhs->set_event_handler(QLibHomeScreen::Event_ShowWindow,[this](json_object *object){
        HMI_DEBUG("Launcher","Surface launcher got Event_ShowWindow\n");
        static bool first_start = true;
        if (first_start) {
            first_start = false;
            mp_qwm->activateWindow(m_myname);
        }
        else {
            emit showWindow();
        }
    });

    mp_qhs->set_event_handler(QLibHomeScreen::Event_OnScreenMessage, [this](json_object *object){
        const char *display_message = json_object_get_string(
            json_object_object_get(object, "display_message"));
        HMI_DEBUG("HomeScreen","set_event_handler Event_OnScreenMessage display_message = %s", display_message);
    });

    mp_qhs->set_event_handler(QLibHomeScreen::Event_ShowNotification,[this](json_object *object){
       json_object *p_obj = json_object_object_get(object, "parameter");
       const char *icon = json_object_get_string(
                   json_object_object_get(p_obj, "icon"));
       const char *text = json_object_get_string(
                   json_object_object_get(p_obj, "text"));
       const char *app_id = json_object_get_string(
                   json_object_object_get(p_obj, "caller"));
       HMI_DEBUG("HomeScreen","Event_ShowNotification icon=%s, text=%s, caller=%s", icon, text, app_id);
       QFileInfo icon_file(icon);
       QString icon_path;
       if (icon_file.isFile() && icon_file.exists()) {
           icon_path = QString(QLatin1String(icon));
       } else {
           icon_path = "./images/Utility_Logo_Grey-01.svg";
       }

       emit showNotification(QString(QLatin1String(app_id)), icon_path, QString(QLatin1String(text)));
    });

    mp_qhs->set_event_handler(QLibHomeScreen::Event_ShowInformation,[this](json_object *object){
       json_object *p_obj = json_object_object_get(object, "parameter");
       const char *info = json_object_get_string(
                   json_object_object_get(p_obj, "info"));

       emit showInformation(QString(QLatin1String(info)));
    });

    mp_qhs->set_event_handler(QLibHomeScreen::Event_HideWindow, [this](json_object *object) {
        emit hideWindow();
        HMI_DEBUG("HomeScreen","set_event_handler Event_HideWindow");
    });

    mp_qhs->set_event_handler(QLibHomeScreen::Event_RegisterShortcut,[this](json_object *object){
        HMI_DEBUG("HomeScreen","set_event_handler Event_RegisterShortcut");
        json_object *p_obj = json_object_object_get(object, "parameter");
        const char *shortcut_id = json_object_get_string(
                    json_object_object_get(p_obj, "shortcut_id"));
        const char *shortcut_name = json_object_get_string(
                    json_object_object_get(p_obj, "shortcut_name"));
        const char *position = json_object_get_string(
                    json_object_object_get(p_obj, "position"));
        HMI_DEBUG("HomeScreen", "Event_RegisterShortcut id==%s, name==%s, position ==%s", shortcut_id, shortcut_name, position);
        emit shortcutChanged(QString(QLatin1String(shortcut_id)), QString(QLatin1String(shortcut_name)), QString(QLatin1String(position)));
    });
}

void HomescreenHandler::tapShortcut(QString application_id, bool is_full)
{
    HMI_DEBUG("HomeScreen","tapShortcut %s", application_id.toStdString().c_str());
    struct json_object* j_json = json_object_new_object();
    struct json_object* value;
    if(is_full) {
        value = json_object_new_string("fullscreen");
        HMI_DEBUG("HomeScreen","fullscreen");
    } else {
        value = json_object_new_string("normal.full");
        HMI_DEBUG("HomeScreen","normal");
    }
    json_object_object_add(j_json, "area", value);
    mp_qhs->showWindow(application_id.section('@', 0, 0).toStdString().c_str(), j_json);
}

void HomescreenHandler::updateShortcut(QString id, struct json_object* object)
{
    mp_qhs->updateShortcut(id.toStdString().c_str(), object);
}


void HomescreenHandler::setCurrentApplication(QString application_name)
{
    HMI_DEBUG("HomeScreen","setCurrentApplication %s", application_name.toStdString().c_str());
    current_application = application_name;
}

QString HomescreenHandler::getCurrentApplication()
{
    HMI_DEBUG("HomeScreen","getCurrentApplication %s", current_application.toStdString().c_str());
    return current_application;
}

int HomescreenHandler::getPidOfApplication(QString application_name) {
    DIR *dir = NULL;
    struct dirent *dir_ent_ptr = NULL;
    FILE *fp = NULL;
    char file_path[50] = {0};
    char cur_task_ame[50] = {0};
    char buf[BUF_SIZE] = {0};
    int pid = -1;

    dir = opendir("/proc");
    if (dir) {
        while((dir_ent_ptr = readdir(dir)) != NULL) {
            if ((strcmp(dir_ent_ptr->d_name, ".") == 0) || (strcmp(dir_ent_ptr->d_name, "..") == 0)
                || (DT_DIR != dir_ent_ptr->d_type))
                continue;
            sprintf(file_path, "/proc/%s/status", dir_ent_ptr->d_name);
            fp = fopen(file_path, "r");
            if (fp) {
                if (fgets(buf, BUF_SIZE - 1, fp) == NULL) {
                    fclose(fp);
                    continue;
                }
                sscanf(buf, "%*s %s", cur_task_ame);
                if (0 == strcmp(application_name.toStdString().c_str(), cur_task_ame)) {
                    pid = atoi(dir_ent_ptr->d_name);
                    break;
                }
            }
        }
    }

    return pid;
}

void HomescreenHandler::killRunningApplications()
{
    QProcess *proc = new QProcess;
    QProcess *proc2 = new QProcess;
//    int num = getPidOfApplication("afbd-video@0.1");
//    QString procNum = QString::number(num);
    QString command = "/usr/bin/pkill videoplayer";
    QString command2 = "/usr/bin/pkill navigation";
    proc->start(command);
    proc2->start(command2);
    HMI_DEBUG("homescreen", command.toStdString().c_str());
    HMI_DEBUG("homescreen", command2.toStdString().c_str());
}

void HomescreenHandler::reboot()
{
    QProcess::execute("sync");
    QProcess::execute("reboot -f");
}

void HomescreenHandler::onRep_static(struct json_object* reply_contents)
{
    static_cast<HomescreenHandler*>(HomescreenHandler::myThis)->onRep(reply_contents);
}

void HomescreenHandler::onEv_static(const string& event, struct json_object* event_contents)
{
    static_cast<HomescreenHandler*>(HomescreenHandler::myThis)->onEv(event, event_contents);
}

void HomescreenHandler::onRep(struct json_object* reply_contents)
{
    const char* str = json_object_to_json_string(reply_contents);
    HMI_DEBUG("HomeScreen","HomeScreen onReply %s", str);
}

void HomescreenHandler::onEv(const string& event, struct json_object* event_contents)
{
    const char* str = json_object_to_json_string(event_contents);
    HMI_DEBUG("HomeScreen","HomeScreen onEv %s, contents: %s", event.c_str(), str);

    if (event.compare("homescreen/on_screen_message") == 0) {
        struct json_object *json_data = json_object_object_get(event_contents, "data");
        struct json_object *json_display_message = json_object_object_get(json_data, "display_message");
        const char* display_message = json_object_get_string(json_display_message);

        HMI_DEBUG("HomeScreen","display_message = %s", display_message);
    }
}

void HomescreenHandler::setQuickWindow(QQuickWindow *qw)
{
    mp_qhs->setQuickWindow(qw);
}