Add embedded ContractGrid to Posts (#822)

* Add embedded market grids

* Hacky way to set height

I haven't figured out a way yet to get the height of the actual iframe's content, so I did some bad estimate for now to unblock shipping the feature, while I continue investigating.

common/util/tiptap-iframe.ts

@@ -35,7 +35,7 @@ export default Node.create<IframeOptions>({
       HTMLAttributes: {
         class: 'iframe-wrapper' + ' ' + wrapperClasses,
         // Tailwind JIT doesn't seem to pick up `pb-[20rem]`, so we hack this in:
-        style: 'padding-bottom: 20rem;',
+        style: 'padding-bottom: 20rem; ',
       },
     }
   },
@@ -48,6 +48,9 @@ export default Node.create<IframeOptions>({
       frameborder: {
         default: 0,
       },
+      height: {
+        default: 0,
+      },
       allowfullscreen: {
         default: this.options.allowFullscreen,
         parseHTML: () => this.options.allowFullscreen,
@@ -60,6 +63,11 @@ export default Node.create<IframeOptions>({
   },
 
   renderHTML({ HTMLAttributes }) {
+    this.options.HTMLAttributes.style =
+      this.options.HTMLAttributes.style +
+      ' height: ' +
+      HTMLAttributes.height +
+      ';'
     return [
       'div',
       this.options.HTMLAttributes,

web/components/contract/contracts-grid.tsx

@@ -27,6 +27,7 @@ export function ContractsGrid(props: {
   }
   highlightOptions?: ContractHighlightOptions
   trackingPostfix?: string
+  breakpointColumns?: { [key: string]: number }
 }) {
   const {
     contracts,
@@ -67,7 +68,7 @@ export function ContractsGrid(props: {
     <Col className="gap-8">
       <Masonry
         // Show only 1 column on tailwind's md breakpoint (768px)
-        breakpointCols={{ default: 2, 768: 1 }}
+        breakpointCols={props.breakpointColumns ?? { default: 2, 768: 1 }}
         className="-ml-4 flex w-auto"
         columnClassName="pl-4 bg-clip-padding"
       >

web/components/editor/market-modal.tsx

@@ -7,7 +7,7 @@ import { Col } from '../layout/col'
 import { Modal } from '../layout/modal'
 import { Row } from '../layout/row'
 import { LoadingIndicator } from '../loading-indicator'
-import { embedCode } from '../share-embed-button'
+import { embedContractCode, embedContractGridCode } from '../share-embed-button'
 import { insertContent } from './utils'
 
 export function MarketModal(props: {
@@ -28,7 +28,11 @@ export function MarketModal(props: {
 
   async function doneAddingContracts() {
     setLoading(true)
-    insertContent(editor, ...contracts.map(embedCode))
+    if (contracts.length == 1) {
+      insertContent(editor, embedContractCode(contracts[0]))
+    } else if (contracts.length > 1) {
+      insertContent(editor, embedContractGridCode(contracts))
+    }
     setLoading(false)
     setOpen(false)
     setContracts([])
@@ -42,9 +46,14 @@ export function MarketModal(props: {
 
           {!loading && (
             <Row className="grow justify-end gap-4">
-              {contracts.length > 0 && (
+              {contracts.length == 1 && (
                 <Button onClick={doneAddingContracts} color={'indigo'}>
-                  Embed {contracts.length} question
+                  Embed 1 question
+                </Button>
+              )}
+              {contracts.length > 1 && (
+                <Button onClick={doneAddingContracts} color={'indigo'}>
+                  Embed grid of {contracts.length} question
                   {contracts.length > 1 && 's'}
                 </Button>
               )}

web/components/share-embed-button.tsx

@@ -9,11 +9,18 @@ import { DOMAIN } from 'common/envs/constants'
 import { copyToClipboard } from 'web/lib/util/copy'
 import { track } from 'web/lib/service/analytics'
 
-export function embedCode(contract: Contract) {
+export function embedContractCode(contract: Contract) {
   const title = contract.question
   const src = `https://${DOMAIN}/embed${contractPath(contract)}`
+  return `<iframe src="${src}" title="${title}" frameborder="0"></iframe>`
+}
 
-  return `<iframe width="560" height="405" src="${src}" title="${title}" frameborder="0"></iframe>`
+export function embedContractGridCode(contracts: Contract[]) {
+  const height = (contracts.length - (contracts.length % 2)) * 100 + 'px'
+  const src = `http://${DOMAIN}/embed/grid/${contracts
+    .map((c) => c.slug)
+    .join('/')}`
+  return `<iframe height="${height}" src="${src}" title="Grid of contracts" frameborder="0"></iframe>`
 }
 
 export function ShareEmbedButton(props: { contract: Contract }) {
@@ -26,7 +33,7 @@ export function ShareEmbedButton(props: { contract: Contract }) {
       as="div"
       className="relative z-10 flex-shrink-0"
       onMouseUp={() => {
-        copyToClipboard(embedCode(contract))
+        copyToClipboard(embedContractCode(contract))
         toast.success('Embed code copied!', {
           icon: codeIcon,
         })

web/pages/create-post.tsx

@@ -41,7 +41,7 @@ export default function CreatePost() {
 
   return (
     <Page>
-      <div className="mx-auto w-full max-w-2xl">
+      <div className="mx-auto w-full max-w-3xl">
         <div className="rounded-lg px-6 py-4 sm:py-0">
           <Title className="!mt-0" text="Create a post" />
           <form>

web/pages/embed/grid/[...slugs]/index.tsx

@@ -0,0 +1,37 @@
+import React from 'react'
+import { Contract, getContractFromSlug } from 'web/lib/firebase/contracts'
+import { ContractsGrid } from 'web/components/contract/contracts-grid'
+
+export async function getStaticProps(props: { params: { slugs: string[] } }) {
+  const { slugs } = props.params
+
+  const contracts = (await Promise.all(
+    slugs.map((slug) =>
+      getContractFromSlug(slug) != null ? getContractFromSlug(slug) : []
+    )
+  )) as Contract[]
+
+  return {
+    props: {
+      contracts,
+    },
+    revalidate: 60, // regenerate after a minute
+  }
+}
+
+export async function getStaticPaths() {
+  return { paths: [], fallback: 'blocking' }
+}
+
+export default function ContractGridPage(props: { contracts: Contract[] }) {
+  const { contracts } = props
+
+  return (
+    <>
+      <ContractsGrid
+        contracts={contracts}
+        breakpointColumns={{ default: 2, 650: 1 }}
+      />
+    </>
+  )
+}