unit FaceService;

interface

uses
  Classes, SysUtils, RealICQModel;

type
  TWaitingFace = class
    FCreateTicket: Cardinal;
    FFormID: string;
    FFaceMD5Code: string;
    FFaceID: string;
  public
    constructor Create;
    property FormID: string read FFormID;
    property FaceMD5Code: string read FFaceMD5Code;
    property FaceID: string read FFaceID;
  end;
  
  TFaceService = class
  private
    FTempFaces,
    FFaces,
    FWaitingFaces: TStringList;
    function GetFacePath(AMD5String: string): string;
  public
    function GetFace(AIndex: Integer): TFace;
    function IsSystemFace(AIndex: Integer): Boolean;
    function ParseToHtml(AContent, AFormID: string; var NoFoundFaces: TStringList): string;
    class function GetService: TFaceService; static;
    constructor Create;
    destructor Destroy; override;

    property Faces : TStringList read FFaces;
    property TempFaces : TStringList read FTempFaces;
    property WaitingFaces : TStringList read FWaitingFaces;
  end;

const
  FaceSmallBMP: string = '_SmallBMP';
  FacePreviewBMP: string = '_PreviewBMP';
  FaceSmallSize: Integer = 19;
  FacePreviewSize: Integer = 92;
  SystemFaceGroup: string = '默认表情';
  NOFaceCategory: string = '未分组表情';

implementation

uses
  DirectoryService, StrUtils, Windows,RealICQUtility, Forms;

var
  AFaceService: TFaceService;

const
  BaseTempFaceIndex: Integer = 10000;


constructor TFaceService.Create;
begin
  FTempFaces := TStringList.Create;
  FFaces := TStringList.Create;
  FWaitingFaces := TStringList.Create;
end;

destructor TFaceService.Destroy;
begin
  TRealICQUtility.FreeStringList(FTempFaces);
  TRealICQUtility.FreeStringList(FFaces);
  TRealICQUtility.FreeStringList(FWaitingFaces);
  inherited;
end;

function TFaceService.GetFace(AIndex: Integer): TFace;
begin
  if AIndex >= BaseTempFaceIndex then
    Result := FTempFaces.Objects[AIndex - BaseTempFaceIndex] as TFace
  else
    Result := FFaces.Objects[AIndex] as TFace;
end;

class function TFaceService.GetService: TFaceService;
begin
  if AFaceService = nil then
    AFaceService := TFaceService.Create;
  Result := AFaceService;
end;

function TFaceService.IsSystemFace(AIndex: Integer): Boolean;
begin

end;

function TFaceService.GetFacePath(AMD5String: string): string;
var
  DSearchRec: TSearchRec;
  FindResult: Integer;
begin
  Result := '';
  FindResult := FindFirst(TDirectoryService.GetService.GetReceivedFaceDir + AMD5String + '.*', faAnyFile, DSearchRec);
  while FindResult = 0 do
  begin
    if (DSearchRec.Name <> '.') and (DSearchRec.Name <> '..') then
    begin
      if AnsiSameText(ExtractFileExt(DSearchRec.Name), '.BMP') or
         AnsiSameText(ExtractFileExt(DSearchRec.Name), '.PNG') or
         AnsiSameText(ExtractFileExt(DSearchRec.Name), '.JPG') or
         AnsiSameText(ExtractFileExt(DSearchRec.Name), '.JPEG') or
         AnsiSameText(ExtractFileExt(DSearchRec.Name), '.GIF') then
      begin
        Result := TDirectoryService.GetService.GetReceivedFaceDir + ExtractFileName(DSearchRec.Name);
        Exit;
      end;
    end;
    FindResult := FindNext(DSearchRec);
  end;
end;

function TFaceService.ParseToHtml(AContent, AFormID: string; var NoFoundFaces: TStringList): string;
var
  Face: TFace;
  iLoop,
  iStart,
  iCount,
  iIndex: Integer;
  MD5String: String;
  AWaitingFace: TWaitingFace;
  FaceID,
  AFileName,
  ContextMenuStr: String;
begin
  iCount := 0;
  iStart := AnsiPos('[IMG:', AContent);
  while iStart <> 0 do
  begin
    if Copy(AContent, iStart + 37, 1) = ']' then
    begin
      MD5String := Copy(AContent, iStart + 5, 32);
      ContextMenuStr := 'oncontextmenu="location.href=''FaceMenu_' + MD5String + ''';return false;"';
      iIndex := FFaces.IndexOf(MD5String);
      if iIndex >= 0  then
      begin
        Face := GetFace(iIndex);
        AContent := AnsiReplaceStr(AContent,
                                      Copy(AContent, iStart, 38),
                                      '<img ' + ContextMenuStr + ' src="' + Face.FileName + '" align="absBottom" hspace="1" >');
      end
      else if FileExists(GetFacePath(MD5String)) then
      begin
        AFileName := GetFacePath(MD5String);
        AContent := AnsiReplaceStr(AContent,
                                      Copy(AContent, iStart, 38),
                                      '<img ' + ContextMenuStr + ' src="' + AFileName + '" align="absBottom" hspace="1" >');
      end
      else
      begin
        FaceID := MD5String + IntToStr(GetTickCount) + IntToStr(WaitingFaces.Count) + IntToStr(iStart);
        AContent := Copy(AContent, 1, iStart - 1) +
                           '<img ' + ContextMenuStr + ' ID = "' + FaceID + '" src="' + ExtractFilePath(Application.ExeName) + 'Images\progress.gif' + '" align="absBottom" hspace="1" >' +
                           Copy(AContent, iStart + 38, Length(AContent));

        Inc(iCount);
        AWaitingFace := TWaitingFace.Create;
        AWaitingFace.FFaceMD5Code := MD5String;
        AWaitingFace.FFormID := AFormID;
        AWaitingFace.FFaceID := FaceID;
        FWaitingFaces.AddObject(MD5String, AWaitingFace);
        if NoFoundFaces <> nil then
          NoFoundFaces.AddObject(MD5String, AWaitingFace);
      end;
    end
    else
    begin
      AContent := Copy(AContent, 1, iStart - 1) + '[/IMG:' + Copy(AContent, iStart + 5, Length(AContent));
    end;

    iStart := AnsiPos('[IMG:', AContent);
  end;

  AContent := AnsiReplaceStr(AContent, '[/IMG:', '[IMG:');

  //取系统表情
  for iLoop := 0 to FFaces.Count - 1 do
  begin
    Face := FFaces.Objects[iLoop] as TFace;
    ContextMenuStr := 'oncontextmenu="location.href=''StandardFaceMenu_' + Face.ShortCut + ''';return false;"';
    AContent := AnsiReplaceStr(AContent,
                                      Face.ShortCut,
                                      '<img ' + ContextMenuStr + ' src="' + Face.FileName + '" align="absBottom" hspace="1" >');
  end;
  Result := AContent;
end;

{ TWaitingFace }

constructor TWaitingFace.Create;
begin
  FCreateTicket := GetTickCount;
end;

initialization

finalization
  if AFaceService <> nil then
    FreeAndNil(AFaceService);

end.