Pascal (Lazarus/Delphi)

Yousign Procedure Creation Basic Mode Upload File

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Demonstrates the 1st step of Yousign procedure creation, which is to upload a PDF file. 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.BinData,
  Chilkat.StringBuilder,
  Chilkat.HttpResponse,
  Chilkat.JsonObject;

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

procedure RunDemo;
var
  success: Boolean;
  http: THttp;
  pdfData: TBinData;
  json: TJsonObject;
  resp: THttpResponse;
  sbResponseBody: TStringBuilder;
  jResp: TJsonObject;
  respStatusCode: Integer;
  id: string;
  name: string;
  v_type: string;
  contentType: string;
  description: string;
  createdAt: string;
  updatedAt: string;
  sha256: string;
  workspace: string;
  creator: string;
  v_protected: Boolean;
  position: Integer;
  parent: 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 --location --request POST 'https://staging-api.yousign.com/files' \
  //  --header 'Authorization: Bearer YOUR_API_KEY' \
  //  --header 'Content-Type: application/json' \
  //  --data-raw '{
  //      "name": "The best name for my file.pdf",
  //      "content": "JVBERi0..." }'

  //  Load a PDF file to be uploaded.
  pdfData := TBinData.Create;
  success := pdfData.LoadFile('qa_data/pdf/helloWorld.pdf');
  if (success = False) then
    begin
      WriteLn('Failed to load PDF local file.');
      Exit;
    end;

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

  //  Use this online tool to generate code from sample JSON:
  //  Generate Code to Create JSON

  //  The following JSON is sent in the request body.

  //  {
  //    "name": "The best name for my file.pdf",
  //    "content": "JVBERi0..."
  //  }

  json := TJsonObject.Create;
  json.UpdateString('name','helloWorld.pdf');
  json.UpdateString('content',pdfData.GetEncoded('base64'));

  //  Adds the "Authorization: Bearer YOUR_API_KEY" header.
  http.AuthToken := 'YOUR_API_KEY';

  resp := THttpResponse.Create;
  success := http.HttpJson('POST','https://staging-api.yousign.com/files',json,'application/json',resp);
  if (success = False) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

  sbResponseBody := TStringBuilder.Create;
  resp.GetBodySb(sbResponseBody);
  jResp := TJsonObject.Create;
  jResp.LoadSb(sbResponseBody);
  jResp.EmitCompact := False;

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

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

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

  //  {
  //    "id": "/files/XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX",
  //    "name": "The best name for my file.pdf",
  //    "type": "signable",
  //    "contentType": "application/pdf",
  //    "description": null,
  //    "createdAt": "2018-12-01T11:36:20+01:00",
  //    "updatedAt": "2018-12-01T11:36:20+01:00",
  //    "sha256": "bb57ae2b2ca6ad0133a699350d1a6f6c8cdfde3cf872cf526585d306e4675cc2",
  //    "metadata": [
  //    ],
  //    "workspace": "/workspaces/XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX",
  //    "creator": null,
  //    "protected": false,
  //    "position": 0,
  //    "parent": null
  //  }

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

  id := jResp.StringOf('id');
  name := jResp.StringOf('name');
  v_type := jResp.StringOf('type');
  contentType := jResp.StringOf('contentType');
  description := jResp.StringOf('description');
  createdAt := jResp.StringOf('createdAt');
  updatedAt := jResp.StringOf('updatedAt');
  sha256 := jResp.StringOf('sha256');
  workspace := jResp.StringOf('workspace');
  creator := jResp.StringOf('creator');
  v_protected := jResp.BoolOf('protected');
  position := jResp.IntOf('position');
  parent := jResp.StringOf('parent');
  i := 0;
  count_i := jResp.SizeOfArray('metadata');
  while i < count_i do
    begin
      jResp.I := i;
      i := i + 1;
    end;



  http.Free;
  pdfData.Free;
  json.Free;
  resp.Free;
  sbResponseBody.Free;
  jResp.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.