unit UPlatformMacOSX;

// Note on directories (by eddie):
// We use subfolders of the application directory on tha mac, because:
// 1. Installation on the mac works as follows: Extract and copy an application
//    and if you don't like or need the application anymore you move the folder
//    to the trash - and you're done.
// 2. If we would use subfolders of the home directory we would have to spread our
//    files to many directories - these directories are defined by Apple, but the 
//    average user doesn't know them, beacuse he or she doesn't need to know them.
//    But for UltraStar the user must at least know the songs directory...
// 
//    Creating a subfolder directly under the home directory is not acceptable.
// 

interface

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

{$I switches.inc}

uses Classes, UPlatform;

type

  TPlatformMacOSX = class(TInterfacedObject, IPlatform)
  public
    function  DirectoryFindFiles(Dir, Filter : WideString; ReturnAllSubDirs : boolean) : TDirectoryEntryArray; 
    function  TerminateIfAlreadyRunning(var WndTitle : string) : boolean;
    procedure Halt();
    function  GetLogPath        : WideString; 
    function  GetGameSharedPath : WideString; 
    function  GetGameUserPath   : WideString; 
    function  FindSongFile(Dir, Mask: WideString): WideString;
  end;

implementation

uses SysUtils, baseunix;

// Mac applications are packaged in directories.
// We have to cut the last two directories
// to get the application directory.

function GetBundlePath : WideString;
var
  i, pos : integer;
begin
  Result := ExtractFilePath(ParamStr(0));
  for i := 1 to 2 do
  begin
    pos := Length(Result);
    repeat
      Delete(Result, pos, 1);
      pos := Length(Result);
    until (pos = 0) or (Result[pos] = '/');
  end;
end;

function TPlatformMacOSX.GetLogPath        : WideString;
begin
  // eddie: Please read the note at the top of this file, why we use the application directory and not the user directory.
  Result := GetBundlePath + 'Contents/Resources/Logs';
end;

function TPlatformMacOSX.GetGameSharedPath : WideString;
begin
  // eddie: Please read the note at the top of this file, why we use the application directory and not the user directory.
  Result := GetBundlePath + 'Contents/Resources/';
end;

function TPlatformMacOSX.GetGameUserPath   : WideString;
begin
  // eddie: Please read the note at the top of this file, why we use the application directory and not the user directory.
  Result := GetBundlePath + 'Contents/Resources/';
end;

function TPlatformMacOSX.DirectoryFindFiles(Dir, Filter : WideString; ReturnAllSubDirs : boolean) : TDirectoryEntryArray;
var
  i       : integer;
  TheDir  : pdir;
  ADirent : pDirent;
  lAttrib : integer;		
begin
  i := 0;
  Filter := LowerCase(Filter);

  TheDir := FPOpenDir(Dir);     
  if Assigned(TheDir) then
    repeat
      ADirent := FPReadDir(TheDir);

      if Assigned(ADirent) and (ADirent^.d_name <> '.') and (ADirent^.d_name <> '..') then
      begin
	lAttrib := FileGetAttr(Dir + ADirent^.d_name);
	if ReturnAllSubDirs and ((lAttrib and faDirectory) <> 0) then
	begin
	  SetLength(Result, i + 1);
	  Result[i].Name        := ADirent^.d_name;
	  Result[i].IsDirectory := true;
	  Result[i].IsFile      := false;
	  i := i + 1;
	end
	else if (Length(Filter) = 0) or (Pos( Filter, LowerCase(ADirent^.d_name)) > 0) then
	begin
	  SetLength(Result, i + 1);
	  Result[i].Name        := ADirent^.d_name;
	  Result[i].IsDirectory := false;
	  Result[i].IsFile      := true;
	  i := i + 1;
	end;
      end;
    until ADirent = nil;

  FPCloseDir(TheDir);
end;

function TPlatformMacOSX.TerminateIfAlreadyRunning(var WndTitle : string) : boolean;
begin
  result := false;
end;

procedure TPlatformMacOSX.Halt;
begin
  System.Halt;
end;

function TPlatformMacOSX.FindSongFile(Dir, Mask: WideString): WideString;
var
  SR : TSearchRec;   // for parsing song directory
begin
  Result := '';
  // faDirectory = $00000010; Attribute of a Ūle, meaning the Ūle is a directory.
  if SysUtils.FindFirst(Dir + Mask, faDirectory, SR) = 0 then
  begin
    Result := SR.Name;
  end; // if
  SysUtils.FindClose(SR);
end;

end.