Pascal (Lazarus/Delphi)

Bitfinex v2 REST Tickers

See more Bitfinex v2 REST Examples

The tickers endpoint provides a high level overview of the state of the market. It shows the current best bid and ask, the last traded price, as well as information on the daily volume and price movement over the last day. The endpoint can retrieve multiple tickers with a single query. 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_1: TJsonArray;
  j: Integer;
  count_j: Integer;
  strVal: string;
  i: Integer;
  count_i: Integer;

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/tickers?symbols=tBTCUSD,tLTCUSD,fUSD

  //  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/tickers?symbols=tBTCUSD,tLTCUSD,fUSD',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)

  //  [
  //    [
  //      "tBTCUSD",
  //      9318.6,
  //      21.53815472,
  //      9318.7,
  //      5.30463105,
  //      223.5,
  //      0.0246,
  //      9318.7,
  //      4125.21689058,
  //      9370.998872,
  //      9075.80199233
  //    ],
  //    [
  //      "tLTCUSD",
  //      44.008,
  //      1807.8617840300003,
  //      44.019,
  //      2394.7625575100005,
  //      2.359,
  //      0.0566,
  //      44.019,
  //      27051.34115724,
  //      44.16,
  //      41.559
  //    ],
  //    [
  //      "fUSD",
  //      0.00022955068493150685,
  //      0.000199,
  //      30,
  //      871597.2359141599,
  //      0.0001962,
  //      2,
  //      67926.11558407999,
  //      -0.00001146,
  //      -0.0523,
  //      0.00020757,
  //      167542924.22214913,
  //      0.00024,
  //      0.00000299,
  //      null,
  //      null,
  //      82649109.90968154
  //    ]
  //  ]

  //  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_1 := TJsonArray.Create;

  i := 0;
  count_i := jarrResp.Size;
  while i < count_i do
    begin
      jarrResp.ArrayAt2(i,jarr_1);
      j := 0;
      count_j := jarr_1.Size;
      while j < count_j do
        begin
          strVal := jarr_1.StringAt(j);
          j := j + 1;
        end;

      i := i + 1;
    end;



  http.Free;
  sbResponseBody.Free;
  jarrResp.Free;
  jarr_1.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.