/*  Starshatter OpenSource Distribution
    Copyright (c) 1997-2004, Destroyer Studios LLC.
    All Rights Reserved.

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright notice,
      this list of conditions and the following disclaimer in the documentation
      and/or other materials provided with the distribution.
    * Neither the name "Destroyer Studios" nor the names of its contributors
      may be used to endorse or promote products derived from this software
      without specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    POSSIBILITY OF SUCH DAMAGE.

    SUBSYSTEM:    Stars.exe
    FILE:         RadioView.cpp
    AUTHOR:       John DiCamillo


    OVERVIEW
    ========
    View class for Radio Communications HUD Overlay
*/

#include "MemDebug.h"
#include "RadioView.h"
#include "RadioMessage.h"
#include "RadioTraffic.h"
#include "QuantumView.h"
#include "HUDView.h"
#include "Ship.h"
#include "Element.h"
#include "Sim.h"
#include "Starshatter.h"

#include "CameraView.h"
#include "Color.h"
#include "Window.h"
#include "Video.h"
#include "Screen.h"
#include "DataLoader.h"
#include "Scene.h"
#include "FontMgr.h"
#include "FormatUtil.h"
#include "Keyboard.h"
#include "Mouse.h"
#include "Game.h"
#include "Menu.h"

static Color  hud_color = Color::Black;
static Color  txt_color = Color::White;

// +====================================================================+
//
// RADIO COMMUNICATIONS MENU:
//

static Menu*         fighter_menu   = 0;
static Menu*         starship_menu  = 0;
static Menu*         target_menu    = 0;
static Menu*         combat_menu    = 0;
static Menu*         formation_menu = 0;
static Menu*         sensors_menu   = 0;
static Menu*         mission_menu   = 0;
static Menu*         wing_menu      = 0;
static Menu*         elem_menu      = 0;
static Menu*         control_menu   = 0;

static int           starship_page  = 0;
static int           num_pages      = 0;
const  int           PAGE_SIZE      = 9;

static MenuHistory   history;

void
RadioView::Initialize()
{
    static int initialized = 0;
    if (initialized) return;

    target_menu = new(__FILE__,__LINE__) Menu(Game::GetText("RadioView.menu.TARGET"));
    target_menu->AddItem(Game::GetText("RadioView.item.attack"),         RadioMessage::ATTACK);
    target_menu->AddItem(Game::GetText("RadioView.item.bracket"),        RadioMessage::BRACKET);
    target_menu->AddItem(Game::GetText("RadioView.item.escort"),         RadioMessage::ESCORT);

    combat_menu = new(__FILE__,__LINE__) Menu(Game::GetText("RadioView.menu.COMBAT"));
    combat_menu->AddItem(Game::GetText("RadioView.item.cover"),          RadioMessage::COVER_ME);
    combat_menu->AddItem(Game::GetText("RadioView.item.break-attack"),   RadioMessage::WEP_FREE);
    combat_menu->AddItem(Game::GetText("RadioView.item.form-up"),        RadioMessage::FORM_UP);

    formation_menu = new(__FILE__,__LINE__) Menu(Game::GetText("RadioView.menu.FORMATION"));
    formation_menu->AddItem(Game::GetText("RadioView.item.diamond"),     RadioMessage::GO_DIAMOND);
    formation_menu->AddItem(Game::GetText("RadioView.item.spread"),      RadioMessage::GO_SPREAD);
    formation_menu->AddItem(Game::GetText("RadioView.item.box"),         RadioMessage::GO_BOX);
    formation_menu->AddItem(Game::GetText("RadioView.item.trail"),       RadioMessage::GO_TRAIL);

    sensors_menu = new(__FILE__,__LINE__) Menu(Game::GetText("RadioView.menu.SENSORS"));
    sensors_menu->AddItem(Game::GetText("RadioView.item.emcon-1"),       RadioMessage::GO_EMCON1);
    sensors_menu->AddItem(Game::GetText("RadioView.item.emcon-2"),       RadioMessage::GO_EMCON2);
    sensors_menu->AddItem(Game::GetText("RadioView.item.emcon-3"),       RadioMessage::GO_EMCON3);
    sensors_menu->AddItem(Game::GetText("RadioView.item.probe"),         RadioMessage::LAUNCH_PROBE);

    mission_menu = new(__FILE__,__LINE__) Menu(Game::GetText("RadioView.menu.MISSION"));
    mission_menu->AddItem(Game::GetText("RadioView.item.skip-navpt"),    RadioMessage::SKIP_NAVPOINT);
    mission_menu->AddItem(Game::GetText("RadioView.item.resume"),        RadioMessage::RESUME_MISSION);
    mission_menu->AddItem(Game::GetText("RadioView.item.rtb"),           RadioMessage::RTB);

    wing_menu = new(__FILE__,__LINE__) Menu(Game::GetText("RadioView.menu.WINGMAN"));
    wing_menu->AddMenu(Game::GetText("RadioView.item.target"),           target_menu);
    wing_menu->AddMenu(Game::GetText("RadioView.item.combat"),           combat_menu);
    wing_menu->AddMenu(Game::GetText("RadioView.item.formation"),        formation_menu);
    wing_menu->AddMenu(Game::GetText("RadioView.item.mission"),          mission_menu);
    wing_menu->AddMenu(Game::GetText("RadioView.item.sensors"),          sensors_menu);

    elem_menu = new(__FILE__,__LINE__) Menu(Game::GetText("RadioView.menu.ELEMENT"));
    elem_menu->AddMenu(Game::GetText("RadioView.item.target"),           target_menu);
    elem_menu->AddMenu(Game::GetText("RadioView.item.combat"),           combat_menu);
    elem_menu->AddMenu(Game::GetText("RadioView.item.formation"),        formation_menu);
    elem_menu->AddMenu(Game::GetText("RadioView.item.mission"),          mission_menu);
    elem_menu->AddMenu(Game::GetText("RadioView.item.sensors"),          sensors_menu);

    control_menu = new(__FILE__,__LINE__) Menu(Game::GetText("RadioView.menu.CONTROL"));
    control_menu->AddItem(Game::GetText("RadioView.item.picture"),       RadioMessage::REQUEST_PICTURE);
    control_menu->AddItem(Game::GetText("RadioView.item.backup"),        RadioMessage::REQUEST_SUPPORT);
    control_menu->AddItem(Game::GetText("RadioView.item.call-inbound"),  RadioMessage::CALL_INBOUND);
    control_menu->AddItem(Game::GetText("RadioView.item.call-finals"),   RadioMessage::CALL_FINALS);

    fighter_menu = new(__FILE__,__LINE__) Menu(Game::GetText("RadioView.menu.RADIO"));
    fighter_menu->AddMenu(Game::GetText("RadioView.item.wingman"),       wing_menu);
    fighter_menu->AddMenu(Game::GetText("RadioView.item.element"),       elem_menu);
    fighter_menu->AddMenu(Game::GetText("RadioView.item.control"),       control_menu);

    starship_menu = new(__FILE__,__LINE__) Menu(Game::GetText("RadioView.menu.RADIO"));

    initialized = 1;
}

void
RadioView::Close()
{
    history.Clear();

    delete fighter_menu;
    delete starship_menu;
    delete target_menu;
    delete combat_menu;
    delete formation_menu;
    delete sensors_menu;
    delete mission_menu;
    delete wing_menu;
    delete elem_menu;
    delete control_menu;
}

static bool TargetRequired(const MenuItem* item)
{
    if (item) {
        switch (item->GetData()) {
        case RadioMessage::ATTACK:
        case RadioMessage::BRACKET:
        case RadioMessage::ESCORT:
            return true;

        default:
            if (item->GetData() == (DWORD) target_menu)
            return true;
        }
    }

    return false;
}

// +====================================================================+

RadioView* RadioView::radio_view = 0;
ThreadSync RadioView::sync;

RadioView::RadioView(Window* c)
: View(c), sim(0), ship(0), font(0), dst_elem(0)
{
    radio_view  = this;
    sim         = Sim::GetSim();

    width       = window->Width();
    height      = window->Height();
    xcenter     = (width  / 2.0) - 0.5;
    ycenter     = (height / 2.0) + 0.5;
    font        = FontMgr::Find("HUD");

    HUDView* hud = HUDView::GetInstance();
    if (hud)
    SetColor(hud->GetTextColor());

    for (int i = 0; i < MAX_MSG; i++)
    msg_time[i] = 0;
}

RadioView::~RadioView()
{
    radio_view = 0;
}

void
RadioView::OnWindowMove()
{
    width       = window->Width();
    height      = window->Height();
    xcenter     = (width  / 2.0) - 0.5;
    ycenter     = (height / 2.0) + 0.5;
}

// +--------------------------------------------------------------------+

bool
RadioView::Update(SimObject* obj)
{
    if (obj == ship) {
        ship = 0;
        history.Clear();
    }

    return SimObserver::Update(obj);
}

const char*
RadioView::GetObserverName() const
{
    return "RadioView";
}

// +--------------------------------------------------------------------+

void
RadioView::Refresh()
{
    sim = Sim::GetSim();

    if (!font)
    return;

    font->SetColor(txt_color);
    font->SetAlpha(1);

    if (sim && ship != sim->GetPlayerShip()) {
        ship = sim->GetPlayerShip();
        history.Clear();

        if (ship) {
            if (ship->Life() == 0 || ship->IsDying() || ship->IsDead()) {
                ship = 0;
            }
            else {
                Observe(ship);
            }
        }
    }

    QuantumView* qv = QuantumView::GetInstance();

    if (!qv || !qv->IsMenuShown()) {
        Menu* menu = history.GetCurrent();

        if (menu) {
            Rect menu_rect(width-115, 10, 115, 12);

            font->DrawText(menu->GetTitle(), 0, menu_rect, DT_CENTER);
            menu_rect.y += 15;

            ListIter<MenuItem> item = menu->GetItems();
            while (++item) {
                if (ship->GetEMCON() < 2 || 
                        (TargetRequired(item.value()) && !ship->GetTarget()) ||
                        item->GetText().contains("KIA")) {
                    item->SetEnabled(false);
                    font->SetAlpha(0.35);
                }
                else {
                    item->SetEnabled(true);
                    font->SetAlpha(1);
                }

                font->DrawText(item->GetText(), 0, menu_rect, DT_LEFT);
                menu_rect.y += 10;
            }
        }
    }

    int message_queue_empty = true;

    // age messages:
    for (int i = 0; i < MAX_MSG; i++) {
        if (msg_time[i] > 0) {
            msg_time[i] -= Game::GUITime();

            if (msg_time[i] <= 0) {
                msg_time[i] = 0;
                msg_text[i] = "";
            }

            message_queue_empty = false;
        }
    }

    if (!message_queue_empty) {
        // advance message pipeline:
        for (int i = 0; i < MAX_MSG; i++) {
            if (msg_time[0] == 0) {
                for (int j = 0; j < MAX_MSG-1; j++) {
                    msg_time[j] = msg_time[j+1];
                    msg_text[j] = msg_text[j+1];
                }

                msg_time[MAX_MSG-1] = 0;
                msg_text[MAX_MSG-1] = "";
            }
        }

        bool hud_off = false;

        if (HUDView::GetInstance())
        hud_off = (HUDView::GetInstance()->GetHUDMode() == HUDView::HUD_MODE_OFF);

        // draw messages:
        if (!hud_off) {
            for (int i = 0; i < MAX_MSG; i++) {
                if (msg_time[i] > 0) {
                    Rect msg_rect(0, 95 + i*10, width, 12);

                    if (msg_time[i] > 1)
                    font->SetAlpha(1);
                    else
                    font->SetAlpha(0.5 + 0.5*msg_time[i]);

                    font->DrawText(msg_text[i].data(), msg_text[i].length(), msg_rect, DT_CENTER);
                }
            }

            font->SetAlpha(1);
        }
    }

    Starshatter* stars = Starshatter::GetInstance();
    if (stars && stars->GetChatMode()) {
        Text chat;

        switch (stars->GetChatMode()) {
        case 1:  chat = "ALL:  ";  break;
        case 2:  chat = "TEAM:  ";  break;
        case 3:  chat = "WING:  ";  break;
        case 4:  chat = "UNIT:  ";  break;
        }

        chat += stars->GetChatText();

        Rect chat_rect(width/2 - 250, height-150, 500, 12);
        font->DrawText(chat, 0, chat_rect, DT_LEFT);

        chat_rect.Inflate(2,2);
        window->DrawRect(chat_rect, hud_color);
    }
}

// +--------------------------------------------------------------------+

void
RadioView::SendRadioMessage(Ship* ship, MenuItem* item)
{
    if (!ship || !item) return;
    Element* elem  = ship->GetElement();
    if (!elem) return;

    // check destination:
    if (dst_elem) {
        RadioMessage* msg = new(__FILE__,__LINE__) RadioMessage(dst_elem, ship, item->GetData());

        if (TargetRequired(item))
        msg->AddTarget(ship->GetTarget());

        RadioTraffic::Transmit(msg);
        dst_elem = 0;
    }

    else if (history.Find(Game::GetText("RadioView.menu.WINGMAN"))) { // wingman menu
        int      index = ship->GetElementIndex();
        int      wing  = 0;

        switch (index) {
        case 1:  wing = 2; break;
        case 2:  wing = 1; break;
        case 3:  wing = 4; break;
        case 4:  wing = 3; break;
        }

        if (wing) {
            Ship* dst = elem->GetShip(wing);
            if (dst) {
                RadioMessage* msg = new(__FILE__,__LINE__) RadioMessage(dst, ship, item->GetData());

                if (TargetRequired(item))
                msg->AddTarget(ship->GetTarget());

                RadioTraffic::Transmit(msg);
            }
        }
    }

    else if (history.Find(Game::GetText("RadioView.menu.ELEMENT"))) { // element menu
        RadioMessage* msg = new(__FILE__,__LINE__) RadioMessage(elem, ship, item->GetData());

        if (TargetRequired(item))
        msg->AddTarget(ship->GetTarget());

        RadioTraffic::Transmit(msg);
    }

    else if (history.Find(Game::GetText("RadioView.menu.CONTROL"))) { // control menu
        RadioMessage* msg = 0;
        Ship* controller = ship->GetController();

        if (controller) {
            msg = new(__FILE__,__LINE__) RadioMessage(controller, ship, item->GetData());
            RadioTraffic::Transmit(msg);
        }
    }
}

// +--------------------------------------------------------------------+

void
RadioView::ExecFrame()
{
    HUDView* hud = HUDView::GetInstance();
    if (hud) {
        if (txt_color != hud->GetTextColor()) {
            txt_color = hud->GetTextColor();
            SetColor(txt_color);
        }

        hud_color = hud->GetHUDColor();
    }

    static int current_key = 0;

    if (current_key > 0 && Keyboard::KeyDown(current_key))
    return;

    current_key = 0;

    Menu* menu = history.GetCurrent();
    if (menu) {
        int max_items = menu->NumItems();

        if (menu == starship_menu && Keyboard::KeyDown('0')) {
            current_key = '0';
            if (++starship_page >= num_pages)
            starship_page = 0;

            history.Pop();
            history.Push(GetRadioMenu(ship));
        }
        else {
            for (int i = 0; i < max_items; i++) {
                if (Keyboard::KeyDown('1' + i)) {
                    current_key = '1' + i;
                    MenuItem* item = menu->GetItem(i);
                    if (item && item->GetEnabled()) {
                        if (item->GetSubmenu()) {
                            if (history.GetCurrent() == starship_menu)
                            dst_elem = (Element*) item->GetData();

                            history.Push(item->GetSubmenu());
                        }
                        else {
                            // execute radio message:
                            SendRadioMessage(ship, item);

                            // clear radio menu:
                            history.Clear();
                        }

                        break;
                    }
                }
            }
        }
    }
}

// +--------------------------------------------------------------------+

void
RadioView::SetColor(Color c)
{
    HUDView* hud = HUDView::GetInstance();

    if (hud) {
        hud_color = hud->GetHUDColor();
        txt_color = hud->GetTextColor();
    }
    else {
        hud_color = c;
        txt_color = c;
    }
}

// +--------------------------------------------------------------------+

bool
RadioView::IsMenuShown()
{
    return history.GetCurrent() != 0;
}

void
RadioView::ShowMenu()
{
    if (!ship) return;

    if (!history.GetCurrent()) {
        history.Push(GetRadioMenu(ship));

        for (int i = 0; i < 10; i++) {
            if (Keyboard::KeyDown('1' + i)) {
                // just need to clear the key down flag
                // so we don't process old keystrokes
                // as valid menu picks...
            }
        }
    }
}

void
RadioView::CloseMenu()
{
    history.Clear();
    dst_elem      = 0;
    starship_page = 0;
    num_pages     = 0;
}

// +--------------------------------------------------------------------+

Menu*
RadioView::GetRadioMenu(Ship* s)
{
    dst_elem = 0;

    if (s && sim) {
        if (s->IsStarship()) {
            starship_menu->ClearItems();

            int n           = 0;
            int page_offset = starship_page*PAGE_SIZE;

            ListIter<Element> elem = sim->GetElements();

            if (num_pages == 0) {
                while (++elem) {
                    if (elem->IsFinished() || elem->IsSquadron() || elem->IsStatic())
                    continue;

                    if (ship->GetIFF() == elem->GetIFF() && ship->GetElement() != elem.value())
                    n++;
                }

                num_pages = (n/PAGE_SIZE) + (n%PAGE_SIZE > 0);
                n = 0;
                elem.reset();
            }

            while (++elem) {
                if (elem->IsFinished() || elem->IsSquadron() || elem->IsStatic())
                continue;

                if (ship->GetIFF() == elem->GetIFF() && ship->GetElement() != elem.value()) {
                    if (n >= page_offset && n < page_offset+PAGE_SIZE) {
                        char text[64];
                        sprintf_s(text, "%d. %s", n+1 - page_offset, (const char*) elem->Name());

                        if (elem->IsActive()) {
                            starship_menu->AddMenu(text, elem_menu, (DWORD) elem.value());
                        }
                        else {
                            strcat_s(text, " ");
                            strcat_s(text, Game::GetText("RadioView.item.not-avail").data());
                            starship_menu->AddItem(text, 0, false);
                        }
                    }
                    n++;
                }
            }

            if (num_pages > 1) {
                char text[64];
                sprintf_s(text, Game::GetText("RadioView.item.next-page").data(), starship_page + 1, num_pages);
                starship_menu->AddItem(text); 
            }

            return starship_menu;
        }
        else if (s->IsDropship()) {
            return fighter_menu;
        }
    }

    return 0;
}

// +--------------------------------------------------------------------+

void
RadioView::Message(const char* msg)
{
    AutoThreadSync a(sync);

    if (radio_view) {
        int index = -1;

        for (int i = 0; i < MAX_MSG; i++) {
            if (radio_view->msg_time[i] <= 0) {
                index = i;
                break;
            }
        }

        // no space; advance pipeline:
        if (index < 0) {
            for (int i = 0; i < MAX_MSG-1; i++) {
                radio_view->msg_text[i] = radio_view->msg_text[i+1];
                radio_view->msg_time[i] = radio_view->msg_time[i+1];
            }

            index = MAX_MSG-1;
        }

        radio_view->msg_text[index] = msg;
        radio_view->msg_time[index] = 10;
    }
}

void
RadioView::ClearMessages()
{
    if (radio_view) {
        for (int i = 0; i < MAX_MSG-1; i++) {
            radio_view->msg_text[i] = Text();
            radio_view->msg_time[i] = 0;
        }
    }
}