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Notion.so > Personal Blog | custom domain + disqus comment
const MY_DOMAIN = "example.com"
const START_PAGE = "https://www.notion.so/example"
addEventListener('fetch', event => {
event.respondWith(fetchAndApply(event.request))
})
const corsHeaders = {
"Access-Control-Allow-Origin": "*",
"Access-Control-Allow-Methods": "GET, HEAD, POST,PUT, OPTIONS",
"Access-Control-Allow-Headers": "Content-Type",
}
function handleOptions(request) {
if (request.headers.get("Origin") !== null &&
request.headers.get("Access-Control-Request-Method") !== null &&
request.headers.get("Access-Control-Request-Headers") !== null) {
// Handle CORS pre-flight request.
return new Response(null, {
headers: corsHeaders
})
} else {
// Handle standard OPTIONS request.
return new Response(null, {
headers: {
"Allow": "GET, HEAD, POST, PUT, OPTIONS",
}
})
}
}
async function fetchAndApply(request) {
if (request.method === "OPTIONS") {
return handleOptions(request)
}
let url = new URL(request.url)
let response
if (url.pathname.startsWith("/app") && url.pathname.endsWith("js")) {
// skip validation in app.js
response = await fetch(`https://www.notion.so${url.pathname}`)
let body = await response.text()
try {
response = new Response(body.replace(/www.notion.so/g, MY_DOMAIN).replace(/notion.so/g, MY_DOMAIN), response)
response.headers.set('Content-Type', "application/x-javascript")
console.log("get rewrite app.js")
} catch (err) {
console.log(err)
}
} else if ((url.pathname.startsWith("/api"))) {
// Forward API
response = await fetch(`https://www.notion.so${url.pathname}`, {
body: request.body, // must match 'Content-Type' header
headers: {
'content-type': 'application/json;charset=UTF-8',
'user-agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Safari/537.36'
},
method: "POST", // *GET, POST, PUT, DELETE, etc.
})
response = new Response(response.body, response)
response.headers.set('Access-Control-Allow-Origin', "*")
} else if (url.pathname === `/`) {
// 301 redrict
let pageUrlList = START_PAGE.split("/")
let redrictUrl = `https://${MY_DOMAIN}/${pageUrlList[pageUrlList.length - 1]}`
return Response.redirect(redrictUrl, 301)
} else {
response = await fetch(`https://www.notion.so${url.pathname}`, {
body: request.body, // must match 'Content-Type' header
headers: request.headers,
method: request.method, // *GET, POST, PUT, DELETE, etc.
})
response = new Response(response.body, response)
// Delete CSP to load disqus content
response.headers.delete("Content-Security-Policy")
// add disqus comment component for every notion page
return new HTMLRewriter().on('body', new ElementHandler()).transform(response)
}
return response
}
class ElementHandler {
element(element) {
// An incoming element, such as `div`
element.append(`
<script>
// if you want to hide some element, add the selector to hideEle Array
const hideEle = [
"#notion-app > div > div.notion-cursor-listener > div > div:nth-child(1) > div.notion-topbar > div > div:nth-child(6)",
"#notion-app > div > div.notion-cursor-listener > div > div:nth-child(1) > div.notion-topbar > div > div:nth-child(5)",
"#notion-app > div > div.notion-cursor-listener > div > div:nth-child(1) > div.notion-topbar > div > div:nth-child(4)",
".notion-topbar > div:nth-child(1) > div:nth-child(5)",
]
// if you want to replace some element, add the selector and innerHTML to replaceEle Object
const replaceEle = {
"#notion-app > div > div.notion-cursor-listener > div > div:nth-child(1) > div.notion-topbar > div > div:nth-child(6)": "<span>agodrich<span>"
}
function hideElement(qs) {
let eles = document.querySelectorAll(qs)
eles && eles.forEach(ele => ele.style.display = "none")
}
function replaceElement(qs, _html) {
let ele = document.querySelector(qs)
if (ele) {
ele.innerHTML = _html
}
}
let MutationObserver = window.MutationObserver || window.WebKitMutationObserver || window.MozMutationObserver;
let body = document.querySelector('body');
let observer = new MutationObserver(function (mutations) {
mutations.forEach(function (mutation) {
let pageContent = document.querySelector("#notion-app div.notion-page-content")
if (pageContent) {
// Do nothing club
}
hideEle.forEach( hideE => hideElement(hideE) )
Object.entries(replaceEle).forEach( item => {
let [qs,_html] = item;
replaceElement(qs,_html)
})
});
});
observer.observe(body, { subtree: true, childList: true });
</script>
`, { html: Boolean })
console.log(`Incoming element: ${element.tagName}`)
}
comments(comment) {
// An incoming comment
}
text(text) {
// An incoming piece of text
}
}
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