// ==UserScript==
// @name         checkVersion
// @description  Greasyfork Check Version Source Code
// @version      1.0.1
// @author       kiccer<[email protected]>
// @license      MIT
// @match        https://greasyfork.org/*
// @grant        none
// ==/UserScript==
(() => {
function getTampermonkey () {
return window.external?.Tampermonkey
}
function getViolentmonkey () {
return window.external?.Violentmonkey
}
function getInstalledVersion (name, namespace) {
return new Promise(function (resolve, reject) {
const tm = getTampermonkey()
if (tm) {
tm.isInstalled(name, namespace, function (i) {
if (i.installed) {
resolve(i.version)
} else {
resolve(null)
}
})
return
}
const vm = getViolentmonkey()
if (vm) {
vm.isInstalled(name, namespace).then(resolve)
return
};
reject(Error)
})
}
// https://developer.mozilla.org/en/docs/Toolkit_version_format
function compareVersions (a, b) {
if (a === b) {
return 0
}
const aParts = a.split('.')
const bParts = b.split('.')
for (let i = 0; i < aParts.length; i++) {
const result = compareVersionPart(aParts[i], bParts[i])
if (result !== 0) {
return result
}
}
return 0
}
function compareVersionPart (partA, partB) {
const partAParts = parseVersionPart(partA)
const partBParts = parseVersionPart(partB)
for (let i = 0; i < partAParts.length; i++) {
// "A string-part that exists is always less than a string-part that doesn't exist"
if (partAParts[i].length > 0 && partBParts[i].length === 0) {
return -1
}
if (partAParts[i].length === 0 && partBParts[i].length > 0) {
return 1
}
if (partAParts[i] > partBParts[i]) {
return 1
}
if (partAParts[i] < partBParts[i]) {
return -1
}
}
return 0
}
// It goes number, string, number, string. If it doesn't exist, then
// 0 for numbers, empty string for strings.
function parseVersionPart (part) {
if (!part) {
return [0, '', 0, '']
}
const partParts = /([0-9]*)([^0-9]*)([0-9]*)([^0-9]*)/.exec(part)
return [
partParts[1] ? parseInt(partParts[1]) : 0,
partParts[2],
partParts[3] ? parseInt(partParts[3]) : 0,
partParts[4]
]
}
function handleInstallResult (installButton, installedVersion, version) {
if (installedVersion == null) {
// Not installed, do nothing
return
}
installButton.removeAttribute('data-ping-url')
switch (compareVersions(installedVersion, version)) {
// Upgrade
case -1:
installButton.textContent = installButton.getAttribute('data-update-label')
break
// Downgrade
case 1:
installButton.textContent = installButton.getAttribute('data-downgrade-label')
break
// Equal
case 0:
installButton.textContent = installButton.getAttribute('data-reinstall-label')
break
}
}
function checkForUpdatesJS (installButton, retry) {
const name = installButton.getAttribute('data-script-name')
const namespace = installButton.getAttribute('data-script-namespace')
const version = installButton.getAttribute('data-script-version')
getInstalledVersion(name, namespace).then(function (installedVersion) {
handleInstallResult(installButton, installedVersion, version)
}, function () {
if (retry) {
setTimeout(function () { checkForUpdatesJS(installButton, false) }, 1000)
}
})
}
function checkForUpdatesCSS (installButton) {
const name = installButton.getAttribute('data-script-name')
const namespace = installButton.getAttribute('data-script-namespace')
postMessage({ type: 'style-version-query', name, namespace, url: location.href }, location.origin)
}
// Response from Stylus
// window.addEventListener('message', function (event) {
//     if (event.origin !== 'https://greasyfork.org' && event.origin !== 'https://sleazyfork.org') { return }
//     if (event.data.type !== 'style-version') { return }
//     const installButton = document.querySelector('.install-link[data-install-format=css]')
//     if (installButton == null) { return }
//     const version = installButton.getAttribute('data-script-version')
//     const installedVersion = event.data.version
//     handleInstallResult(installButton, installedVersion, version)
// }, false)
// document.addEventListener('DOMContentLoaded', function () {
//     const installButtonJS = document.querySelector('.install-link[data-install-format=js]')
//     if (installButtonJS) {
//         checkForUpdatesJS(installButtonJS, true)
//     }
//     const installButtonCSS = document.querySelector('.install-link[data-install-format=css]')
//     if (installButtonCSS) {
//         checkForUpdatesCSS(installButtonCSS)
//     }
// })
if (!window.checkVersion) {
window.checkVersion = {
getTampermonkey,
getViolentmonkey,
getInstalledVersion,
compareVersions,
compareVersionPart,
parseVersionPart,
handleInstallResult,
checkForUpdatesJS,
checkForUpdatesCSS
}
}
})()