Pascal (Lazarus/Delphi)

Bitfinex v2 REST Public Trades

See more Bitfinex v2 REST Examples

The trades endpoint allows the retrieval of past public trades and includes details such as price, size, and time. Optional parameters can be used to limit the number of results; you can specify a start and end timestamp, a limit, and a sorting method. Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.Http,
  Chilkat.StringBuilder,
  Chilkat.JsonArray;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  http: THttp;
  sbResponseBody: TStringBuilder;
  jarrResp: TJsonArray;
  respStatusCode: Integer;
  jarr_trade: TJsonArray;
  i: Integer;
  count_i: Integer;
  trade_id: string;
  mts: string;
  amount: string;
  price: string;

begin
  success := False;

  //  This example assumes the Chilkat API to have been previously unlocked.
  //  See Global Unlock Sample for sample code.

  http := THttp.Create;

  //  Implements the following CURL command:

  //  curl https://api-pub.bitfinex.com/v2/trades/tBTCUSD/hist?limit=5

  //  Use the following online tool to generate HTTP code from a CURL command
  //  Convert a cURL Command to HTTP Source Code

  sbResponseBody := TStringBuilder.Create;
  success := http.QuickGetSb('https://api-pub.bitfinex.com/v2/trades/tBTCUSD/hist?limit=5',sbResponseBody);
  if (success = False) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

  jarrResp := TJsonArray.Create;
  jarrResp.LoadSb(sbResponseBody);
  jarrResp.EmitCompact := False;

  WriteLn('Response Body:');
  WriteLn(jarrResp.Emit());

  respStatusCode := http.LastStatus;
  WriteLn('Response Status Code = ' + respStatusCode);
  if (respStatusCode >= 400) then
    begin
      WriteLn('Response Header:');
      WriteLn(http.LastHeader);
      WriteLn('Failed.');
      Exit;
    end;

  //  Sample JSON response:
  //  (Sample code for parsing the JSON response is shown below)

  //  on trading pairs (ex. tBTCUSD)
  //  [
  //    [
  //      ID,
  //      MTS,
  //      AMOUNT,
  //      PRICE
  //    ]
  //  ]

  //  [
  //    [
  //      472164271,
  //      1594077725121,
  //      -0.15101673,
  //      9370
  //    ],
  //    [
  //      472164270,
  //      1594077723860,
  //      -0.015,
  //      9370
  //    ],
  //    [
  //      472164269,
  //      1594077720208,
  //      -0.015,
  //      9370
  //    ],
  //    [
  //      472164267,
  //      1594077718125,
  //      -0.005,
  //      9370
  //    ],
  //    [
  //      472164251,
  //      1594077697587,
  //      -0.015,
  //      9370
  //    ]
  //  ]

  //  Sample code for parsing the JSON response...
  //  Use the following online tool to generate parsing code from sample JSON:
  //  Generate Parsing Code from JSON

  jarr_trade := TJsonArray.Create;

  i := 0;
  count_i := jarrResp.Size;
  while i < count_i do
    begin
      jarrResp.ArrayAt2(i,jarr_trade);

      trade_id := jarr_trade.StringAt(0);
      mts := jarr_trade.StringAt(1);
      amount := jarr_trade.StringAt(2);
      price := jarr_trade.StringAt(3);
      i := i + 1;
    end;



  http.Free;
  sbResponseBody.Free;
  jarrResp.Free;
  jarr_trade.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.