unit uWSDA;

interface

uses
  Classes, SysUtils, System.JSON, ipwwsclient,  StrUtils, uAPIDA;

type
  TOnDonateEvent = procedure(aNick, aMessage, aSum: string) of object;
  TOnStatusEvent = procedure(AStatusText: string; AStatusCode:integer) of object;

  TWSClient = class(TObject)
  private
    FWS: TipwWSClient;
    FAPIClient: TAPIClient;
    FOnDonate: TOnDonateEvent;
    FOnStatus: TOnStatusEvent;
    FWsstoken: string;
    FWSID: string;
    procedure DataIn(Sender: TObject; DataFormat: Integer; const Text: string;
      const TextB: TBytes; EOM, EOL: Boolean);
    procedure ConnectionStatus(Sender: TObject; const ConnectionEvent: string;
      StatusCode: Integer; const Description: string);
    procedure Error(Sender: TObject; ErrorCode: Integer;
      const Description: string);
    function ExtractValue(const T_, Text, _T: string): string;
    procedure HandleIncomingData(const Data: string);
  public
    constructor Create;
    destructor Destroy; override;
    procedure Connect(const WSSURL: string);
    procedure Disconnect;
    procedure Send(const Data: string);
    property OnDonate: TOnDonateEvent read FOnDonate write FOnDonate;
    property OnStatus: TOnStatusEvent read FOnStatus write FOnStatus;
    property Wsstoken: string read FWsstoken write FWsstoken;
    property WSID: string read FWSID write FWSID;
    property APIClient: TAPIClient read FAPIClient write FAPIClient;
  end;

implementation

constructor TWSClient.Create;
begin
  FWS := TipwWSClient.Create(nil);
  FWS.OnDataIn := DataIn;
  FWS.OnConnectionStatus := ConnectionStatus;
  FWS.OnError := Error;

end;

destructor TWSClient.Destroy;
begin
  FWS.Disconnect;
  FWS.Free;
  inherited;
end;

procedure TWSClient.Disconnect;
begin
FWS.Disconnect;
end;

procedure TWSClient.Connect(const WSSURL: string);
begin
  FWS.ConnectTo(WSSURL);
end;

procedure TWSClient.Send(const Data: string);
begin
  FWS.SendText(Data);
end;

procedure TWSClient.DataIn(Sender: TObject; DataFormat: Integer;
  const Text: string; const TextB: TBytes; EOM, EOL: Boolean);
begin
  HandleIncomingData(Text);
  // FWS.Ping;
end;

procedure TWSClient.ConnectionStatus(Sender: TObject;
  const ConnectionEvent: string; StatusCode: Integer;
  const Description: string);
begin
  if Assigned(FOnStatus) then
    FOnStatus(ConnectionEvent,StatusCode);
end;

procedure TWSClient.Error(Sender: TObject; ErrorCode: Integer;
  const Description: string);
begin
//  fLog.toLog(2, 'uWSDA', 'Error', 'Code: ' + IntToStr(ErrorCode) + ' - ' +
//    Description);
end;

function TWSClient.ExtractValue(const T_, Text, _T: string): string;
var
  StartPos, EndPos: Integer;
begin
  StartPos := Pos(T_, Text);
  if StartPos = 0 then
    Exit('');
  StartPos := StartPos + Length(T_);
  EndPos := PosEx(_T, Text, StartPos);
  if EndPos = 0 then
    Exit('');
  Result := Copy(Text, StartPos, EndPos - StartPos);
end;

procedure TWSClient.HandleIncomingData(const Data: string);
var
  JSON: TJSONObject;
  jo: TJSONObject;
  DataObj: TJSONObject;
  DonationData: TJSONObject;
  ChannelArray: TJSONArray;
  wsstoken2: string;
begin
//  fLog.toLog(3, 'uWSDA', 'HandleIncomingData', Data);
  // Обработка регистрации клиента
  if Pos('"result":{"client":"', Data) > 0 then
  begin
    FWsstoken := ExtractValue('"result":{"client":"', Data, '",');
 //   fLog.toLog(3, 'uWSDA', 'HandleIncomingData', 'Клиент зарегистрирован');
    jo := FAPIClient.SubscribeToChannel(FWSID, FWsstoken);
 //   fLog.toLog(3, 'uWSDA', 'HandleIncomingData', 'Клиент подписан');
    ChannelArray := jo.Values['channels'] as TJSONArray;
    if Assigned(ChannelArray) and (ChannelArray.Count > 0) then
    begin
      wsstoken2 := ChannelArray.Items[0].GetValue<string>('token');
  //    fLog.toLog(3, 'da', 'EventWS', 'Подписка на канал с токеном: ' +
  //      wsstoken2);
      FWS.SendText('{"params": {"channel": "$alerts:donation_' + FWSID +
        '","token": "' + wsstoken2 + '"},"method": 1,"id": 2 }');
    end;
  end;
  // Обработка донатов
  if Pos('"name":"Donations"', Data) > 0 then
  begin
 //   fLog.toLog(3, 'uWSDA', 'HandleIncomingData', 'Новый Донат');
    JSON := TJSONObject.ParseJSONValue(Data) as TJSONObject;
    try
      DataObj := JSON.GetValue<TJSONObject>('result').GetValue<TJSONObject>
        ('data').GetValue<TJSONObject>('data');
      if Assigned(DataObj) and Assigned(FOnDonate) then
        FOnDonate(DataObj.GetValue<string>('username'),
          DataObj.GetValue<string>('message'),
          DataObj.GetValue<string>('amount'));
    finally
      JSON.Free;
    end;
  end;
end;

end.