{ Copyright 2019 Espressif Systems (Shanghai) PTE LTD
  SPDX-License-Identifier: Apache-2.0 }

{ ------------------------------ Custom steps before the main installation flow ------------------------------ }

var
  SetupAborted: Boolean;

function InstallationSuccessful(): Boolean;
begin
  Result := not SetupAborted;
end;

<event('InitializeWizard')>
procedure InitializeDownloader();
begin
  idpDownloadAfter(wpReady);
end;

<event('NextButtonClick')>
function PreInstallSteps(CurPageID: Integer): Boolean;
var
  DestPath: String;
begin
  Result := True;
  if CurPageID <> wpReady then
    exit;

  ForceDirectories(ExpandConstant('{app}\dist'));

  if not PythonUseExisting then
  begin
    DestPath := ExpandConstant('{app}\dist\{#PythonInstallerName}');
    if FileExists(DestPath) then
    begin
      Log('Python installer already downloaded: ' + DestPath);
    end else begin
      idpAddFile('{#PythonInstallerDownloadURL}', DestPath);
    end;
  end;

  if not GitUseExisting then
  begin
    DestPath := ExpandConstant('{app}\dist\{#GitInstallerName}');
    if FileExists(DestPath) then
    begin
      Log('Git installer already downloaded: ' + DestPath);
    end else begin
      idpAddFile('{#GitInstallerDownloadURL}', DestPath);
    end;
  end;

  if not IDFUseExisting then
  begin
    IDFAddDownload();
  end;
end;

{ ------------------------------ Custom steps after the main installation flow ------------------------------ }

procedure AddPythonGitToPath();
var
  EnvPath: String;
  PythonLibPath: String;
begin
  EnvPath := GetEnv('PATH');

  if not PythonUseExisting then
    PythonExecutablePathUpdateAfterInstall();

  if not GitUseExisting then
    GitExecutablePathUpdateAfterInstall();

  EnvPath := PythonPath + ';' + GitPath + ';' + EnvPath;
  Log('Setting PATH for this process: ' + EnvPath);
  SetEnvironmentVariable('PATH', EnvPath);

  { Log and clear PYTHONPATH variable, as it might point to libraries of another Python version}
  PythonLibPath := GetEnv('PYTHONPATH')
  Log('PYTHONPATH=' + PythonLibPath)
  SetEnvironmentVariable('PYTHONPATH', '')
end;

<event('CurStepChanged')>
procedure PostInstallSteps(CurStep: TSetupStep);
var
  Err: Integer;
begin
  if CurStep <> ssPostInstall then
    exit;

  try
    AddPythonGitToPath();

    if not IDFUseExisting then
      IDFDownload();

    IDFToolsSetup();

    CreateIDFCommandPromptShortcut();
  except
    SetupAborted := True;
    if MsgBox('Installation log has been created, it may contain more information about the problem.' + #13#10
              + 'Display the installation log now?', mbConfirmation, MB_YESNO or MB_DEFBUTTON1) = IDYES then
    begin
      ShellExec('', 'notepad.exe', ExpandConstant('{log}'), ExpandConstant('{tmp}'), SW_SHOW, ewNoWait, Err);
    end;
    Abort();
  end;
end;

<event('ShouldSkipPage')>
function SkipFinishedPage(PageID: Integer): Boolean;
begin
  Result := False;

  if PageID = wpFinished then
  begin
    Result := SetupAborted;
  end;
end;