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unit frmmain;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, db, BufDataset, fphttpclient, Forms, Controls, Graphics,
Dialogs, StdCtrls, ExtCtrls, DBCtrls, DBGrids, IniPropStorage, ComCtrls,
fpJSON, SynEdit, SynHighlighterXML, XMLDatapacketReader, csvdataset;
type
{ TMainForm }
TMainForm = class(TForm)
BGetresources: TButton;
BFetchResource: TButton;
CSVResource: TCSVDataset;
DSResource: TDataSource;
GResource: TDBGrid;
HTCResource: TFPHTTPClient;
NavResource: TDBNavigator;
EURL: TEdit;
EUserName: TEdit;
EPassword: TEdit;
GBServer: TGroupBox;
PCData: TPageControl;
PSMain: TIniPropStorage;
LEURL: TLabel;
LUserName: TLabel;
LPassword: TLabel;
LBResources: TListBox;
PResource: TPanel;
PData: TPanel;
SERawData: TSynEdit;
SHXML: TSynXMLSyn;
TSGrid: TTabSheet;
TSRaw: TTabSheet;
procedure BFetchResourceClick(Sender: TObject);
procedure BGetresourcesClick(Sender: TObject);
procedure PSMainRestoreProperties(Sender: TObject);
procedure PSMainSaveProperties(Sender: TObject);
private
function ConfigConnection: String;
procedure DisplayResources(J: TJSONObject);
procedure GetResourceData;
procedure GetResources;
public
end;
var
MainForm: TMainForm;
implementation
uses strutils,httpprotocol, jsonparser, URIParser;
{$R *.lfm}
{ TMainForm }
Function TMainForm.ConfigConnection : String;
Var
P : String;
begin
HTCResource.UserName:=EUserName.Text;
HTCResource.Password:=EPassword.Text;
Result:=EURL.Text;
if (Result='') then
Raise Exception.Create('Need a URL to perform request');
P:=LowerCase(ParseUri(Result,False).Protocol);
if (P<>'http') and (P<>'https') then
Result:='http://'+Result;
Result:=IncludeHTTPPathDelimiter(Result);
end;
procedure TMainForm.DisplayResources(J : TJSONObject);
Var
A : TJSONArray;
I : Integer;
R : TJSONObject;
N : String;
begin
LBResources.Items.Clear;
A:=J.Get('data',TJSONArray(Nil));
if not assigned(A) then
exit;
For I:=0 to A.Count-1 do
begin
R:=A.Objects[i];
N:=R.Get('name','');
if N<>'' then
LBResources.Items.Add(N);
end;
end;
procedure TMainForm.GetResources;
Var
S : TMemoryStream;
URL : String;
D : TJSONData;
J : TJSONObject absolute D;
begin
URL:=ConfigConnection;
S:=TMemoryStream.Create;
try
HTCResource.Get(URL+'metadata/?fmt=json&humanreadable=0',S);
S.Position:=0;
D:=GetJSON(S);
if D is TJSONObject then
DisplayResources(J);
finally
S.Free;
end;
end;
procedure TMainForm.GetResourceData;
Var
S : TMemoryStream;
URL : String;
begin
URL:=ConfigConnection;
if LBResources.ItemIndex<>-1 then
URL:=URL+LBResources.Items[LBResources.ItemIndex];
S:=TMemoryStream.Create;
try
// Metadata=1 enables fieldnames in 1st line
HTCResource.Get(URL+'?fmt=csv&metadata=1',S);
S.Position:=0;
SERawData.Lines.LoadFromStream(S);
S.Position:=0;
CSVResource.LoadFromStream(S);
finally
S.Free;
end;
end;
procedure TMainForm.BGetresourcesClick(Sender: TObject);
begin
GetResources;
end;
procedure TMainForm.PSMainRestoreProperties(Sender: TObject);
Var
S: String;
begin
S:=PSMAin.ReadString('pwd','');
if (S<>'') then
EPassword.Text:=XorDecode('secret',S)
else
EPassword.Clear;
end;
procedure TMainForm.PSMainSaveProperties(Sender: TObject);
Var
S: String;
begin
S:=EPassword.Text;
If (S<>'') then
PSMAin.WriteString('pwd',XorEncode('secret',S));
end;
procedure TMainForm.BFetchResourceClick(Sender: TObject);
begin
GetResourceData;
end;
end.
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