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27 lines
2.4 KiB
TypeScript
27 lines
2.4 KiB
TypeScript
import {createHash} from "node:crypto";
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import type {ChatCatalogContext} from "../chat-catalog-contract.js";
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import {renderRuntimeArtifact,type RuntimeRenderedNode} from "./runtime-rendered-artifact.js";
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export interface SlackLaunchRendering {sha256:string;nodes:RuntimeRenderedNode[];usableSignup:boolean}
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export function hasSlackLaunchRendering(value:SlackLaunchRendering){
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return value.usableSignup&&value.nodes.some(node=>(node.tag==="H1"||node.role==="heading")&&/\bAcorn\s+Notes\b/i.test(node.text))&&value.nodes.some(node=>node.tag==="P"&&node.text.length>=20);
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}
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/** Independently retrieved bytes only. Both contexts have no authenticated
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* storage, scripts or network; no generated site can call back into the app. */
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export async function renderSlackLaunchArtifact(ctx:ChatCatalogContext,html:string):Promise<SlackLaunchRendering>{
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const nodes=await renderRuntimeArtifact(ctx,html),browser=ctx.input.page.context().browser();if(!browser)throw new Error("Slack result rendering requires the existing browser");
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const preview=await browser.newContext({javaScriptEnabled:false});
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try{
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const page=await preview.newPage();await page.route("**/*",route=>route.abort());await page.setContent(html,{waitUntil:"domcontentloaded"});
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const usableSignup=await page.locator("a[href]").evaluateAll(elements=>{
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const visible=(element:Element)=>{const box=element.getBoundingClientRect();if(box.width<2||box.height<2||box.right<=0||box.left>=innerWidth)return false;for(let node:Element|null=element;node;node=node.parentElement){const css=getComputedStyle(node);if(css.display==="none"||css.visibility==="hidden"||Number(css.opacity)===0||css.pointerEvents==="none")return false;}return true;};
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if(elements.length>500)throw new Error("Slack launch navigation exceeds finite inspection bound");
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return elements.some(element=>{if(!visible(element)||element.getAttribute("aria-disabled")==="true"||!/join|sign.?up|subscribe|early access/i.test(element.textContent??""))return false;
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const href=element.getAttribute("href")??"";
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if(href.startsWith("#")){const target=document.getElementById(href.slice(1));return !!target&&visible(target)&&(target.textContent?.trim().length??0)>=15;}
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try{const url=new URL(href);return url.protocol==="https:"&&!url.username&&!url.password&&!!url.hostname;}catch{return false;}
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});
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});
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return {sha256:createHash("sha256").update(html).digest("hex"),nodes,usableSignup};
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}finally{await preview.close();}
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}
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