Delphi DLL

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. Delphi DLL

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Http, StringBuilder, JsonArray;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
http: HCkHttp;
sbResponseBody: HCkStringBuilder;
jarrResp: HCkJsonArray;
respStatusCode: Integer;
jarr_trade: HCkJsonArray;
i: Integer;
count_i: Integer;
trade_id: PWideChar;
mts: PWideChar;
amount: PWideChar;
price: PWideChar;

begin
success := False;

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

http := CkHttp_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 := CkStringBuilder_Create();
success := CkHttp_QuickGetSb(http,'https://api-pub.bitfinex.com/v2/trades/tBTCUSD/hist?limit=5',sbResponseBody);
if (success = False) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

jarrResp := CkJsonArray_Create();
CkJsonArray_LoadSb(jarrResp,sbResponseBody);
CkJsonArray_putEmitCompact(jarrResp,False);

Memo1.Lines.Add('Response Body:');
Memo1.Lines.Add(CkJsonArray__emit(jarrResp));

respStatusCode := CkHttp_getLastStatus(http);
Memo1.Lines.Add('Response Status Code = ' + IntToStr(respStatusCode));
if (respStatusCode >= 400) then
  begin
    Memo1.Lines.Add('Response Header:');
    Memo1.Lines.Add(CkHttp__lastHeader(http));
    Memo1.Lines.Add('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 := CkJsonArray_Create();

i := 0;
count_i := CkJsonArray_getSize(jarrResp);
while i < count_i do
  begin
    CkJsonArray_ArrayAt2(jarrResp,i,jarr_trade);

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

CkHttp_Dispose(http);
CkStringBuilder_Dispose(sbResponseBody);
CkJsonArray_Dispose(jarrResp);
CkJsonArray_Dispose(jarr_trade);

end;