{* UltraStar Deluxe - Karaoke Game
 *
 * UltraStar Deluxe is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program 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 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 this program; see the file COPYING. If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 * $URL$
 * $Id$
 *}

unit UScreenSongMenu;

interface

{$IFDEF FPC}
  {$MODE Delphi}
{$ENDIF}

{$I switches.inc}

uses
  UMenu,
  SDL,
  UDisplay,
  UMusic,
  UFiles,
  SysUtils,
  UThemes;

type
  TScreenSongMenu = class(TMenu)
    private
      CurMenu: byte; // num of the cur. shown menu
    public
      Visible: boolean; // whether the menu should be drawn

      constructor Create; override;
      function ParseInput(PressedKey: cardinal; CharCode: UCS4Char; PressedDown: boolean): boolean; override;
      procedure OnShow; override;
      function Draw: boolean; override;
      procedure MenuShow(sMenu: byte);
      procedure HandleReturn;
  end;

const
  SM_Main = 1;

  SM_PlayList         = 64 or 1;
  SM_Playlist_Add     = 64 or 2;
  SM_Playlist_New     = 64 or 3;

  SM_Playlist_DelItem = 64 or 5;

  SM_Playlist_Load    = 64 or 8 or 1;
  SM_Playlist_Del     = 64 or 8 or 5;

  SM_Party_Main       = 128 or 1;
  SM_Party_Joker      = 128 or 2;

var
  ISelections: array of UTF8String;
  SelectValue: integer;

implementation

uses
  UGraphic,
  UMain,
  UIni,
  UTexture,
  ULanguage,
  UParty,
  UPlaylist,
  USongs,
  UUnicodeUtils;

function TScreenSongMenu.ParseInput(PressedKey: cardinal; CharCode: UCS4Char; PressedDown: boolean): boolean;
begin
  Result := true;
  if (PressedDown) then
  begin // key down
    if (CurMenu = SM_Playlist_New) and (Interaction=0) then
    begin
      // check normal keys
      if IsAlphaNumericChar(CharCode) or
         (CharCode in [Ord(' '), Ord('-'), Ord('_'), Ord('!'),
                       Ord(','), Ord('<'), Ord('/'), Ord('*'),
                       Ord('?'), Ord(''''), Ord('"')]) then
      begin
        Button[Interaction].Text[0].Text := Button[Interaction].Text[0].Text +
                                            UCS4ToUTF8String(CharCode);
        exit;
      end;

      // check special keys
      case PressedKey of
        SDLK_BACKSPACE:
          begin
            Button[Interaction].Text[0].DeleteLastLetter;
            exit;
          end;
      end;
    end;

    // check normal keys
    case UCS4UpperCase(CharCode) of
      Ord('Q'):
        begin
          Result := false;
          Exit;
        end;
    end;

    // check special keys
    case PressedKey of
      SDLK_ESCAPE,
      SDLK_BACKSPACE:
        begin
          AudioPlayback.PlaySound(SoundLib.Back);
          Visible := false;
        end;

      SDLK_RETURN:
        begin
          HandleReturn;
        end;

      SDLK_DOWN: InteractNext;
      SDLK_UP:   InteractPrev;

      SDLK_RIGHT:
        begin
          if (Interaction=3) then
            InteractInc;
        end;
      SDLK_LEFT:
        begin
          if (Interaction=3) then
            InteractDec;
        end;

      SDLK_1:
        begin // jocker
            // use joker
          case CurMenu of
            SM_Party_Main:
            begin
              ScreenSong.DoJoker(0)
            end;
          end;
        end;
      SDLK_2:
        begin // jocker
            // use joker
          case CurMenu of
            SM_Party_Main:
            begin
              ScreenSong.DoJoker(1)
            end;
          end;
        end;
      SDLK_3:
        begin // jocker
            // use joker
          case CurMenu of
            SM_Party_Main:
            begin
              ScreenSong.DoJoker(2)
            end;
          end;
        end;
    end; // case
  end; // if
end;

constructor TScreenSongMenu.Create;
begin
  inherited Create;

  // create dummy selectslide entrys
  SetLength(ISelections, 1);
  ISelections[0] := 'Dummy';

  AddText(Theme.SongMenu.TextMenu);

  LoadFromTheme(Theme.SongMenu);

  AddButton(Theme.SongMenu.Button1);
  if (Length(Button[0].Text) = 0) then
    AddButtonText(14, 20, 'Button 1');

  AddButton(Theme.SongMenu.Button2);
  if (Length(Button[1].Text) = 0) then
    AddButtonText(14, 20, 'Button 2');

  AddButton(Theme.SongMenu.Button3);
  if (Length(Button[2].Text) = 0) then
    AddButtonText(14, 20, 'Button 3');

  AddSelectSlide(Theme.SongMenu.SelectSlide3, SelectValue, ISelections);

  AddButton(Theme.SongMenu.Button4);
  if (Length(Button[3].Text) = 0) then
    AddButtonText(14, 20, 'Button 4');

  Interaction := 0;
end;

function TScreenSongMenu.Draw: boolean;
begin
  Result := inherited Draw;
end;

procedure TScreenSongMenu.OnShow;
begin
  inherited;
end;

procedure TScreenSongMenu.MenuShow(sMenu: byte);
begin
  Interaction := 0; // reset interaction
  Visible := true;  // set visible
  case sMenu of
    SM_Main:
      begin
        CurMenu := sMenu;
        Text[0].Text := Language.Translate('SONG_MENU_NAME_MAIN');

        Button[0].Visible := true;
        Button[1].Visible := true;
        Button[2].Visible := true;
        Button[3].Visible := true;
        SelectsS[0].Visible := false;

        Button[0].Text[0].Text := Language.Translate('SONG_MENU_PLAY');
        Button[1].Text[0].Text := Language.Translate('SONG_MENU_CHANGEPLAYERS');
        Button[2].Text[0].Text := Language.Translate('SONG_MENU_PLAYLIST_ADD');
        Button[3].Text[0].Text := Language.Translate('SONG_MENU_EDIT');
      end;

    SM_PlayList:
      begin
        CurMenu := sMenu;
        Text[0].Text := Language.Translate('SONG_MENU_NAME_PLAYLIST');

        Button[0].Visible := true;
        Button[1].Visible := true;
        Button[2].Visible := true;
        Button[3].Visible := true;
        SelectsS[0].Visible := false;

        Button[0].Text[0].Text := Language.Translate('SONG_MENU_PLAY');
        Button[1].Text[0].Text := Language.Translate('SONG_MENU_CHANGEPLAYERS');
        Button[2].Text[0].Text := Language.Translate('SONG_MENU_PLAYLIST_DEL');
        Button[3].Text[0].Text := Language.Translate('SONG_MENU_EDIT');
      end;

    SM_Playlist_Add:
      begin
        CurMenu := sMenu;
        Text[0].Text := Language.Translate('SONG_MENU_NAME_PLAYLIST_ADD');

        Button[0].Visible := true;
        Button[1].Visible := false;
        Button[2].Visible := false;
        Button[3].Visible := true;
        SelectsS[0].Visible := true;

        Button[0].Text[0].Text := Language.Translate('SONG_MENU_PLAYLIST_ADD_NEW');
        Button[3].Text[0].Text := Language.Translate('SONG_MENU_PLAYLIST_ADD_EXISTING');

        SetLength(ISelections, Length(PlaylistMan.Playlists));
        PlaylistMan.GetNames(ISelections);

        if (Length(ISelections)>=1) then
        begin
          UpdateSelectSlideOptions(Theme.SongMenu.SelectSlide3, 0, ISelections, SelectValue);
        end
        else
        begin
          Button[3].Visible := false;
          SelectsS[0].Visible := false;
          Button[2].Visible := true;
          Button[2].Text[0].Text := Language.Translate('SONG_MENU_PLAYLIST_NOEXISTING');
        end;
      end;

    SM_Playlist_New:
      begin
        CurMenu := sMenu;
        Text[0].Text := Language.Translate('SONG_MENU_NAME_PLAYLIST_NEW');

        Button[0].Visible := true;
        Button[1].Visible := false;
        Button[2].Visible := true;
        Button[3].Visible := true;
        SelectsS[0].Visible := false;

        Button[0].Text[0].Text := Language.Translate('SONG_MENU_PLAYLIST_NEW_UNNAMED');
        Button[2].Text[0].Text := Language.Translate('SONG_MENU_PLAYLIST_NEW_CREATE');
        Button[3].Text[0].Text := Language.Translate('SONG_MENU_CANCEL');
      end;

    SM_Playlist_DelItem:
      begin
        CurMenu := sMenu;
        Text[0].Text := Language.Translate('SONG_MENU_NAME_PLAYLIST_DELITEM');

        Button[0].Visible := true;
        Button[1].Visible := false;
        Button[2].Visible := false;
        Button[3].Visible := true;
        SelectsS[0].Visible := false;

        Button[0].Text[0].Text := Language.Translate('SONG_MENU_YES');
        Button[3].Text[0].Text := Language.Translate('SONG_MENU_CANCEL');
      end;

    SM_Playlist_Load:
      begin
        CurMenu := sMenu;
        Text[0].Text := Language.Translate('SONG_MENU_NAME_PLAYLIST_LOAD');

        // show delete curent playlist button when playlist is opened
        Button[0].Visible := (CatSongs.CatNumShow = -3);

        Button[1].Visible := false;
        Button[2].Visible := false;
        Button[3].Visible := true;
        SelectsS[0].Visible := true;

        Button[0].Text[0].Text := Language.Translate('SONG_MENU_PLAYLIST_DELCURRENT');
        Button[3].Text[0].Text := Language.Translate('SONG_MENU_PLAYLIST_LOAD');

        SetLength(ISelections, Length(PlaylistMan.Playlists));
        PlaylistMan.GetNames(ISelections);

        if (Length(ISelections)>=1) then
        begin
          UpdateSelectSlideOptions(Theme.SongMenu.SelectSlide3, 0, ISelections, SelectValue);
          Interaction := 3;
        end
        else
        begin
          Button[3].Visible := false;
          SelectsS[0].Visible := false;
          Button[2].Visible := true;
          Button[2].Text[0].Text := Language.Translate('SONG_MENU_PLAYLIST_NOEXISTING');
          Interaction := 2;
        end;
      end;

    SM_Playlist_Del:
      begin
        CurMenu := sMenu;
        Text[0].Text := Language.Translate('SONG_MENU_NAME_PLAYLIST_DEL');

        Button[0].Visible := true;
        Button[1].Visible := false;
        Button[2].Visible := false;
        Button[3].Visible := true;
        SelectsS[0].Visible := false;

        Button[0].Text[0].Text := Language.Translate('SONG_MENU_YES');
        Button[3].Text[0].Text := Language.Translate('SONG_MENU_CANCEL');
      end;

    SM_Party_Main:
      begin
        CurMenu := sMenu;
        Text[0].Text := Language.Translate('SONG_MENU_NAME_PARTY_MAIN');

        Button[0].Visible := true;
        Button[1].Visible := false;
        Button[2].Visible := false;
        Button[3].Visible := true;
        SelectsS[0].Visible := false;

        Button[0].Text[0].Text := Language.Translate('SONG_MENU_PLAY');
        //Button[1].Text[0].Text := Language.Translate('SONG_MENU_JOKER');
        //Button[2].Text[0].Text := Language.Translate('SONG_MENU_PLAYMODI');
        Button[3].Text[0].Text := Language.Translate('SONG_MENU_JOKER');
      end;

    SM_Party_Joker:
      begin
        CurMenu := sMenu;
        Text[0].Text := Language.Translate('SONG_MENU_NAME_PARTY_JOKER');
        // to-do : Party
        Button[0].Visible := (Length(Party.Teams) >= 1) AND (Party.Teams[0].JokersLeft > 0);
        Button[1].Visible := (Length(Party.Teams) >= 2) AND (Party.Teams[1].JokersLeft > 0);
        Button[2].Visible := (Length(Party.Teams) >= 3) AND (Party.Teams[2].JokersLeft > 0);
        Button[3].Visible := True;
        SelectsS[0].Visible := False;

        if (Button[0].Visible) then
          Button[0].Text[0].Text := UTF8String(Party.Teams[0].Name);
        if (Button[1].Visible) then
          Button[1].Text[0].Text := UTF8String(Party.Teams[1].Name);
        if (Button[2].Visible) then
          Button[2].Text[0].Text := UTF8String(Party.Teams[2].Name);
        Button[3].Text[0].Text := Language.Translate('SONG_MENU_CANCEL');

        // set right interaction
        if (not Button[0].Visible) then
        begin
          if (not Button[1].Visible) then
          begin
            if (not Button[2].Visible) then
              Interaction := 4
            else
              Interaction := 2;
          end
          else
            Interaction := 1;
        end;

      end;
  end;
end;

procedure TScreenSongMenu.HandleReturn;
begin
  case CurMenu of
    SM_Main:
      begin
        case Interaction of
          0: // button 1
            begin
              ScreenSong.StartSong;
              Visible := false;
            end;

          1: // button 2
            begin
              // select new players then sing:
              ScreenSong.SelectPlayers;
              Visible := false;
            end;

          2: // button 3
            begin
              // show add to playlist menu
              MenuShow(SM_Playlist_Add);
            end;

          3: // selectslide 3
            begin
              //Dummy
            end;

          4: // button 4
            begin
              ScreenSong.OpenEditor;
              Visible := false;
            end;
        end;
      end;

    SM_PlayList:
      begin
        Visible := false;
        case Interaction of
          0: // button 1
            begin
              ScreenSong.StartSong;
              Visible := false;
            end;

          1: // button 2
            begin
              // select new players then sing:
              ScreenSong.SelectPlayers;
              Visible := false;
            end;

          2: // button 3
            begin
              // show add to playlist menu
              MenuShow(SM_Playlist_DelItem);
            end;

          3: // selectslide 3
            begin
              // dummy
            end;

          4: // button 4
            begin
              ScreenSong.OpenEditor;
              Visible := false;
            end;
        end;
      end;

    SM_Playlist_Add:
      begin
        case Interaction of
          0: // button 1
            begin
              MenuShow(SM_Playlist_New);
            end;

          3: // selectslide 3
            begin
              // dummy
            end;

          4: // button 4
            begin
              PlaylistMan.AddItem(ScreenSong.Interaction, SelectValue);
              Visible := false;
            end;
        end;
      end;

      SM_Playlist_New:
      begin
        case Interaction of
          0: // button 1
            begin
              // nothing, button for entering name
            end;

          2: // button 3
            begin
              // create playlist and add song
              PlaylistMan.AddItem(
              ScreenSong.Interaction,
              PlaylistMan.AddPlaylist(Button[0].Text[0].Text));
              Visible := false;
            end;

          3: // selectslide 3
            begin
              // cancel -> go back to add screen
              MenuShow(SM_Playlist_Add);
            end;

          4: // button 4
            begin
              Visible := false;
            end;
        end;
      end;

    SM_Playlist_DelItem:
      begin
        Visible := false;
        case Interaction of
          0: // button 1
            begin
              // delete
              PlayListMan.DelItem(PlayListMan.GetIndexbySongID(ScreenSong.Interaction));
              Visible := false;
            end;

          4: // button 4
            begin
              MenuShow(SM_Playlist);
            end;
        end;
      end;

    SM_Playlist_Load:
      begin
        case Interaction of
          0: // button 1 (Delete playlist)
            begin
              MenuShow(SM_Playlist_Del);
            end;
          4: // button 4
            begin
              // load playlist
              PlaylistMan.SetPlayList(SelectValue);
              Visible := false;
            end;
        end;
      end;

    SM_Playlist_Del:
      begin
        Visible := false;
        case Interaction of
          0: // button 1
            begin
              // delete
              PlayListMan.DelPlaylist(PlaylistMan.CurPlayList);
              Visible := false;
            end;

          4: // button 4
            begin
              MenuShow(SM_Playlist_Load);
            end;
        end;
      end;

    SM_Party_Main:
      begin
        case Interaction of
          0: // button 1
            begin
              // start singing
              Party.CallAfterSongSelect;
              Visible := false;
            end;

          4: // button 4
            begin
              // joker
              MenuShow(SM_Party_Joker);
            end;
        end;
      end;

    SM_Party_Joker:
      begin
        Visible := false;
        case Interaction of
          0: // button 1
            begin
              // joker team 1
              ScreenSong.DoJoker(0);
            end;

          1: // button 2
            begin
              // joker team 2
              ScreenSong.DoJoker(1);
            end;

          2: // button 3
            begin
              // joker team 3
              ScreenSong.DoJoker(2);
            end;

          4: // button 4
            begin
              // cancel... (go back to old menu)
              MenuShow(SM_Party_Main);
            end;
        end;
      end;
  end;
end;

end.