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docs/components/webhooks/Webhook.tsx
2022-12-06 21:20:23 +00:00

242 lines
9.0 KiB
TypeScript

import { ActionList, ActionMenu, Flash } from '@primer/react'
import { useState, KeyboardEvent, useEffect } from 'react'
import useSWR from 'swr'
import { useRouter } from 'next/router'
import { slug } from 'github-slugger'
import cx from 'classnames'
import { useMainContext } from 'components/context/MainContext'
import { useVersion } from 'components/hooks/useVersion'
import { LinkIconHeading } from 'components/article/LinkIconHeading'
import { useTranslation } from 'components/hooks/useTranslation'
import type { WebhookAction, WebhookData } from './types'
import { ParameterTable } from 'components/parameter-table/ParameterTable'
import styles from './WebhookPayloadExample.module.scss'
type Props = {
webhook: WebhookAction
}
// fetcher passed to useSWR() to get webhook data using the given URL
async function webhookFetcher(url: string) {
const response = await fetch(url)
if (!response.ok) {
throw new Error(`${response.status} on ${url}`)
}
return response.json()
}
// We manually created decorated webhooks files for GHES versions older than
// 3.7, returns whether the given version is one of these versions of GHES.
//
// TODO: once 3.7 is the oldest supported version of GHES, we won't need this
// anymore.
function isScrapedGhesVersion(version: ReturnType<typeof useVersion>) {
const scrapedVersions = ['3.6', '3.5', '3.4', '3.3', '3.2']
if (!version.isEnterprise) return false
// getting the number part e.g. '3.6' from a version string like
// 'enterprise-server@3.6'
const versionNumber = version.currentVersion.split('@')[1]
return scrapedVersions.includes(versionNumber)
}
export function Webhook({ webhook }: Props) {
// Get version for requests to switch webhook action type
const version = useVersion()
const { t } = useTranslation('products')
const router = useRouter()
const { locale } = router
const context = useMainContext()
// Get more user friendly language for the different availability options in
// the webhook schema (we can't change it directly in the schema). Note that
// we specifically don't want to translate these strings with useTranslation()
// like we usually do with strings from data/ui.yml.
const rephraseAvailability = context.data.ui.products.webhooks.rephrase_availability
// The param that was clicked so we can expand its property <details> element
const [clickedBodyParameterName, setClickedBodyParameterName] = useState<undefined | string>('')
// The selected webhook action type the user selects via a dropdown
const [selectedWebhookActionType, setSelectedWebhookActionType] = useState('')
// The index of the selected action type so we can highlight which one is selected
// in the action type dropdown
const [selectedActionTypeIndex, setSelectedActionTypeIndex] = useState(0)
const webhookSlug = slug(webhook.data.category)
const webhookFetchUrl = `/api/webhooks/v1?${new URLSearchParams({
category: webhook.data.category,
version: version.currentVersion,
})}`
// When you load the page we want to support linking to a specific webhook type
// so this effect sets the webhook type if it's provided in the URL e.g.:
//
// webhook-events-and-payloads?actionType=published#package
//
// where the webhook is set in the hash (which is equal to webhookSlug) and
// the webhook action type is passed in the actionType parameter.
useEffect(() => {
const url = new URL(location.href)
const actionType = url.searchParams.get('actionType')
const hash = url.hash?.slice(1)
if (actionType && hash && webhook.actionTypes.includes(actionType) && hash === webhookSlug) {
setSelectedWebhookActionType(actionType)
setSelectedActionTypeIndex(webhook.actionTypes.indexOf(actionType))
}
}, [])
// callback for the action type dropdown -- sets the action type to the given
// type, index is the index of the selected type so we can highlight it as
// selected.
//
// Besides setting the action type state, we also want to:
//
// * clear the clicked body param so that no properties are expanded when we
// re-render the webhook
// * update the URL so people can link to a specific webhook action type
function handleActionTypeChange(type: string, index: number) {
setClickedBodyParameterName('')
setSelectedWebhookActionType(type)
setSelectedActionTypeIndex(index)
const { asPath } = router
let [pathRoot, pathQuery = ''] = asPath.split('?')
const params = new URLSearchParams(pathQuery)
if (pathRoot.includes('#')) {
pathRoot = pathRoot.split('#')[0]
}
params.set('actionType', type)
router.push({ pathname: pathRoot, query: params.toString(), hash: webhookSlug }, undefined, {
shallow: true,
locale,
})
}
// callback to trigger useSWR() hook after a nested property is clicked
function handleBodyParamExpansion(event: KeyboardEvent<HTMLElement>) {
// need to cast it because 'closest' isn't necessarily available on
// event.target
const target = event.target as HTMLElement
setClickedBodyParameterName(target.closest('details')?.dataset.nestedParamId)
}
// fires when the webhook action type changes or someone clicks on a nested
// body param for the first time. In either case, we now have all the data
// for a webhook (i.e. all the data for each action type and all of their
// nested parameters)
const { data, error } = useSWR<WebhookData, Error>(
clickedBodyParameterName || selectedWebhookActionType ? webhookFetchUrl : null,
webhookFetcher,
{
revalidateOnFocus: false,
}
)
const currentWebhookActionType = selectedWebhookActionType || webhook.data.action
const currentWebhookAction = (data && data[currentWebhookActionType]) || webhook.data
return (
<div>
<h2 id={webhookSlug}>
<LinkIconHeading slug={webhookSlug} />
{currentWebhookAction.category}
</h2>
<div>
<div dangerouslySetInnerHTML={{ __html: currentWebhookAction.summaryHtml }}></div>
<h3>{t('webhooks.availability')}</h3>
<ul>
{currentWebhookAction.availability.map((availability) => {
// TODO: once 3.7 is the oldest supported version of GHES, we won't need this anymore.
if (isScrapedGhesVersion(version)) {
return (
<li
dangerouslySetInnerHTML={{ __html: availability }}
key={`availability-${availability}`}
></li>
)
} else {
return (
<li key={`availability-${availability}`}>
{rephraseAvailability[availability] ?? availability}
</li>
)
}
})}
</ul>
<h3>{t('webhooks.webhook_payload_object')}</h3>
{error && (
<Flash className="mb-5" variant="danger">
<p>{t('webhooks.action_type_switch_error')}</p>
<p>
<code className="f6" style={{ background: 'none' }}>
{error.toString()}
</code>
</p>
</Flash>
)}
{webhook.actionTypes.length > 1 && (
<div className="mb-4">
<h4 className="border-bottom pt-2 pb-2 mb-3">{t('webhooks.action_type')}</h4>
<div className="mb-3">
<ActionMenu>
<ActionMenu.Button aria-label="Select a webhook action type" className="text-bold">
{currentWebhookActionType}
</ActionMenu.Button>
<ActionMenu.Overlay>
<ActionList selectionVariant="single">
{webhook.actionTypes.map((type, index) => {
return (
<ActionList.Item
selected={index === selectedActionTypeIndex}
key={`${webhook.name}-${type}`}
onSelect={() => handleActionTypeChange(type, index)}
>
{type}
</ActionList.Item>
)
})}
</ActionList>
</ActionMenu.Overlay>
</ActionMenu>
</div>
</div>
)}
<div
className="mb-4 f5 color-fg-muted"
dangerouslySetInnerHTML={{ __html: currentWebhookAction.descriptionHtml }}
></div>
<div>
<ParameterTable
slug={slug(`${currentWebhookAction.category}-${selectedWebhookActionType}`)}
bodyParameters={currentWebhookAction.bodyParameters || []}
bodyParamExpandCallback={handleBodyParamExpansion}
clickedBodyParameterName={clickedBodyParameterName}
/>
</div>
</div>
{webhook.data.payloadExample && (
<>
<h3>{t('webhooks.webhook_payload_example')}</h3>
<div
className={cx(styles.payloadExample, 'border-top rounded-1 my-0')}
style={{ maxHeight: '32rem' }}
data-highlight={'json'}
>
<code>{JSON.stringify(webhook.data.payloadExample, null, 2)}</code>
</div>
</>
)}
</div>
)
}