RealICQClient/AppCentre/IconRequest.pas

unit IconRequest;

interface

uses
  Classes, SysUtils, IdHTTP, IdComponent, Windows;

type
  TIconResponseEvent = procedure(AppKey: string; AStream: TStream) of object;
  TIconRequest = class(TThread)
  private
    FApps: IInterfaceList;
    FMemoryStream: TMemoryStream;
    FOnCompleted: TIconResponseEvent;
  protected
    procedure Execute; override;
  public
    constructor Create(AApps: IInterfaceList);
    destructor Destroy; override;

    class function GetMD5Name(AUrl: string): string;

    property OnCompleted: TIconResponseEvent read FOnCompleted write FOnCompleted;
  end;

const
  ICON_URL: string = 'http://%s:%d%s';
implementation

uses
  MD5_32, InterfaceAppCentre, LoggerImport, AppCentreImport, Dialogs, IdURI;

const
  TEMP_DIR: string = 'Users\';

{ TIconRequest }

constructor TIconRequest.Create(AApps: IInterfaceList);
begin
  FApps := AApps;
  FMemoryStream := TMemoryStream.Create;
  FreeOnTerminate := False;
  inherited Create(False);
end;

//constructor TIconRequest.Create(AppKey, AUrl: String);
//begin
//  FAppKey := AppKey;
//  FURL := AUrl;
//  FMD5Name := GetMD5Name(AUrl);
//  FMemoryStream := TMemoryStream.Create;
//  inherited Create(True);
//end;

destructor TIconRequest.Destroy;
begin
  FOnCompleted := nil;
  FApps := nil;
  FreeAndNil(FMemoryStream);
  inherited;
end;

procedure TIconRequest.Execute;
var
  AIdHttp: TIdHTTP;
  iLoop: Integer;
  ADownloadThread: TIconRequest;
  AHotApp: IHotApp;
  AApp: IApp;
  AConfig: IAppCentreConfig;
  AURL: string;
begin
  AIdHttp := TIdHTTP.Create(nil);
  AIdHttp.Request.CustomHeaders.Values['Content-Type']  := 'application/octet-stream';
  try
    iLoop := 0;
    while (not Terminated) and (FApps <> nil) and (iLoop <= FApps.Count - 1) do
    begin
      if FApps[iLoop].QueryInterface(IHotApp, AHotApp) = S_OK then
        AApp := AHotApp.GetUserApp
      else if FApps[iLoop].QueryInterface(IApp, AApp) = S_OK then

      else
      begin
        inc(iLoop);
        Continue;
      end;

      Inc(iLoop);

      if Length(AApp.GetIcon) = 0 then
        Continue;

      FMemoryStream.Clear;
      AConfig := GetAppCentreConfig;
//      AURL := AApp.GetIcon
      AIdHTTP.Get(AApp.GetIcon, FMemoryStream);
      if Terminated then
        Break;

      if Assigned(FOnCompleted) then
        FOnCompleted(AApp.GetAppKey, FMemoryStream);
    end;

    Debug(IntToStr(ThreadID)+ '-Ö´ÐÐÍê±Ï', 'TIconRequest.Execute');
  except
    on E: Exception do
    begin
      Debug(E.Message, 'TIconRequest.Execute');
      FApps := nil;
      FreeAndNil(AIdHTTP);
    end;
  end;
  FApps := nil;
  FreeAndNil(AIdHTTP);
end;

class function TIconRequest.GetMD5Name(AUrl: string): string;
begin
  Result := '';
  if Length(AUrl) > 0 then
    Result := MD5Print(MD5String(AUrl));
end;
end.