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local QtCore = require 'qtcore'
local QtWebEngineCore = require 'qtwebenginecore'

local Class = QtCore.Class('WebUiHandler', QtWebEngineCore.QWebEngineUrlSchemeHandler) {}

local webUiOrigin = QtCore.QString('webui:about')

function Class:__static_init()
	self.aboutUrl = QtCore.QUrl.fromUserInput(webUiOrigin)
	self.schemeName = QtCore.QByteArray 'webui'
end

function Class:requestStarted(job) -- QWebEngineUrlRequestJob
	local method = job:requestMethod()
	local url = job:requestUrl()
	local initiator = job:initiator()

	method = method:toStdString()

	if method == 'GET' then
		local file = QtCore.QFile('about.html', job)
		file:open(QtCore.QIODevice.ReadOnly)
		job:reply(QtCore.QByteArray 'text/html', file)
	elseif method == 'POST' then
		job:fail(QtWebEngineCore.QWebEngineUrlRequestJob.RequestAborted)
		QtCore.QCoreApplication.exit()
   	else
   		job:fail(QtWebEngineCore.QWebEngineUrlRequestJob.UrlNotFound)
	end
end

-- static
function Class.registerUrlScheme()
	local webUiScheme = QtWebEngineCore.QWebEngineUrlScheme(Class.schemeName)
	webUiScheme:setFlags(QtWebEngineCore.QWebEngineUrlScheme.SecureScheme
		+ QtWebEngineCore.QWebEngineUrlScheme.LocalScheme
		+ QtWebEngineCore.QWebEngineUrlScheme.LocalAccessAllowed
	)
	QtWebEngineCore.QWebEngineUrlScheme.registerScheme(webUiScheme)
end

return Class
