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#include "fivewin.ch"

static oGmail, hStore

function main()

	local oDlg
	local oName, cName := ""
	local oEmail, cEmail := ""
	local oPhoto, oSend
	local oConnect, oDisconnect

	hStore := readStore( hb_dirBase() + "gmail.json" )

	oGmail := TGmail():new()

	oGmail:setConfig( {;
		"client_id" => "your_client_id",;
		"client_secret" => "your_client_secret",;
		"redirect_uri" => "http://localhost:2025/";
	} )

	if !empty( hStore[ "token" ] )
		oGmail:setToken( hStore[ "token" ] )
	endif

	define dialog oDlg resource "GMAIL"

		redefine image oPhoto id 4002 of oDlg
		redefine say oName var cName id 4003 of oDlg
		redefine say oEmail var cEmail id 4004 of oDlg

		redefine button oDisconnect id 4005 of oDlg action onDisconnect( oDlg, { oPhoto, oName, oEmail, oSend, oDisconnect }, { oConnect } )
		redefine button oSend id 4006 of oDlg action onSendMail()

		redefine button oConnect id 4001 of oDlg action onConnect( oDlg, { oPhoto, oName, oEmail, oSend, oDisconnect }, { oConnect } )

		oDlg:bStart := { || updateControls( oDlg, { oPhoto, oName, oEmail, oSend, oDisconnect }, { oConnect } ) }

		oDlg:lHelpIcon := .f.

	activate dialog oDlg centered

	saveStore( hb_dirBase() + "gmail.json", hStore )

return nil

function onConnect( oDlg, aConnect, aDisconnect )

	local cToken

	if !oGmail:isAuth()
		cToken := oGmail:auth()
		if !empty( cToken )
			hStore[ "token" ] := cToken
		else
			msgStop( "Authentication failed!" )
		endif
	endif

	updateControls( oDlg, aConnect, aDisconnect )

return nil

function onDisconnect( oDlg, aConnect, aDisconnect )

	local cProfile := hb_dirBase() + "profile_gmail.jpg"

	oGmail:revoke()
	updateControls( oDlg, aConnect, aDisconnect )

	if hb_vfExists( cProfile )
		hb_vfErase( cProfile )
	endif

return nil

function onSendMail()

	if oGmail:send( "lailton@paysoft.com.br", "it is a test", "<b>Message from Gmail oAuth2</b>", .t., {} )
		msgInfo( "Mail sent!" )
	else
		msgStop( "Failed to send email. You may not have authorized the required permissions..." )
	endif

return nil

function updateControls( oDlg, aConnect, aDisconnect )

	local hUser
	local cProfile := hb_dirBase() + "profile_gmail.jpg"

	if oGmail:isAuth()
		hUser := oGmail:me()
	endif

	aEval( aConnect, { |o| o:hide() } )
	aEval( aDisconnect, { |o| o:hide() } )

	if hb_isHash( hUser )

		aEval( aConnect, {|o|o:show(),o:refresh()} )

		if !hb_vfExists( cProfile )
			oGmail:downloadUrl( hUser[ "picture" ], cProfile )
		endif

		// Load Profile Photo
		if hb_vfExists( cProfile )
			aConnect[1]:loadImage(, cProfile )
			aConnect[1]:refresh()
		endif

		aConnect[2]:setText( hUser[ "name" ] )
		aConnect[3]:setText( hUser[ "email" ] )

		aConnect[2]:update()
		aConnect[3]:update()

	else

		aEval( aDisconnect, {|o|o:show(),o:refresh()} )

	endif

	oDlg:update()

return nil

function readStore( cFile )

	local hStore

	if hb_vfExists( cFile )
		hStore := hb_jsonDecode( hb_memoRead( cFile ) )
	endif

	if !hb_isHash( hStore )
		hStore := {;
			"token" => "";
		}
	endif

return hStore

function saveStore( cFile, hStore )

	hb_memoWrit( cFile, hb_jsonEncode( hStore ) )

return hb_vfExists( cFile )