2016-10-19 12:58:08 +00:00
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import { join } from 'path'
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2016-10-05 23:52:50 +00:00
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import { createElement } from 'react'
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import { renderToString, renderToStaticMarkup } from 'react-dom/server'
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2016-10-15 19:49:42 +00:00
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import requireModule from './require'
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2016-10-08 12:01:58 +00:00
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import read from './read'
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2016-12-20 17:27:43 +00:00
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import { Router } from '../lib/router'
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2016-12-16 18:42:40 +00:00
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import Head, { defaultHead } from '../lib/head'
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2016-10-05 23:52:50 +00:00
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import App from '../lib/app'
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2016-12-16 20:33:08 +00:00
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export async function render (req, res, pathname, query, opts) {
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const html = await renderToHTML(req, res, pathname, opts)
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sendHTML(res, html)
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}
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export function renderToHTML (req, res, pathname, query, opts) {
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return doRender(req, res, pathname, query, opts)
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}
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export async function renderError (err, req, res, pathname, query, opts) {
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const html = await renderErrorToHTML(err, req, res, query, opts)
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sendHTML(res, html)
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}
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export function renderErrorToHTML (err, req, res, pathname, query, opts = {}) {
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const page = err && opts.dev ? '/_error-debug' : '/_error'
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return doRender(req, res, pathname, query, { ...opts, err, page })
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}
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async function doRender (req, res, pathname, query, {
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err,
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page,
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2016-10-10 04:24:30 +00:00
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dir = process.cwd(),
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dev = false,
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2016-10-15 19:49:42 +00:00
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staticMarkup = false
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2016-10-10 04:24:30 +00:00
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} = {}) {
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2016-12-16 20:33:08 +00:00
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page = page || pathname
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2016-12-16 18:42:40 +00:00
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let [Component, Document] = await Promise.all([
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2016-12-16 20:33:08 +00:00
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requireModule(join(dir, '.next', 'dist', 'pages', page)),
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2016-12-16 18:42:40 +00:00
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requireModule(join(dir, '.next', 'dist', 'pages', '_document'))
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])
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Component = Component.default || Component
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Document = Document.default || Document
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2016-12-16 20:33:08 +00:00
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const ctx = { err, req, res, pathname, query }
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2016-10-05 23:52:50 +00:00
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2016-11-24 14:03:16 +00:00
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const [
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props,
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component,
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errorComponent
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] = await Promise.all([
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Component.getInitialProps ? Component.getInitialProps(ctx) : {},
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2016-12-16 20:33:08 +00:00
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read(join(dir, '.next', 'bundles', 'pages', page)),
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2016-11-24 14:03:16 +00:00
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read(join(dir, '.next', 'bundles', 'pages', dev ? '_error-debug' : '_error'))
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])
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2016-10-05 23:52:50 +00:00
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2016-12-16 20:33:08 +00:00
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// the response might be finshed on the getinitialprops call
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if (res.finished) return
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2016-12-16 18:42:40 +00:00
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const renderPage = () => {
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2016-10-06 02:42:55 +00:00
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const app = createElement(App, {
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Component,
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props,
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2016-12-20 17:27:43 +00:00
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router: new Router(pathname, query)
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2016-10-06 02:42:55 +00:00
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})
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2016-12-20 17:27:43 +00:00
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2016-12-21 15:57:25 +00:00
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const render = staticMarkup ? renderToStaticMarkup : renderToString
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let html
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let head
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try {
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html = render(app)
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} finally {
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head = Head.rewind() || defaultHead()
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}
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2016-12-16 18:42:40 +00:00
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return { html, head }
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}
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2016-10-06 02:42:55 +00:00
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2016-12-16 18:42:40 +00:00
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const docProps = await Document.getInitialProps({ ...ctx, renderPage })
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2016-10-05 23:52:50 +00:00
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const doc = createElement(Document, {
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2016-12-16 18:42:40 +00:00
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__NEXT_DATA__: {
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2016-10-09 09:50:41 +00:00
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component,
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2016-11-24 14:03:16 +00:00
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errorComponent,
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2016-10-09 09:50:41 +00:00
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props,
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2016-12-16 20:33:08 +00:00
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pathname,
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query,
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err: (err && dev) ? errorToJSON(err) : null
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2016-10-09 09:50:41 +00:00
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},
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2016-10-10 04:24:30 +00:00
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dev,
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2016-10-28 14:38:24 +00:00
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staticMarkup,
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2016-12-16 18:42:40 +00:00
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...docProps
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2016-10-05 23:52:50 +00:00
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})
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return '<!DOCTYPE html>' + renderToStaticMarkup(doc)
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}
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2016-12-16 20:33:08 +00:00
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export async function renderJSON (res, page, { dir = process.cwd() } = {}) {
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const component = await read(join(dir, '.next', 'bundles', 'pages', page))
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sendJSON(res, { component })
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2016-10-05 23:52:50 +00:00
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}
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2016-10-10 04:24:30 +00:00
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2016-12-16 20:33:08 +00:00
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export async function renderErrorJSON (err, res, { dir = process.cwd(), dev = false } = {}) {
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const page = err && dev ? '/_error-debug' : '/_error'
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const component = await read(join(dir, '.next', 'bundles', 'pages', page))
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sendJSON(res, {
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component,
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err: err && dev ? errorToJSON(err) : null
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})
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}
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export function sendHTML (res, html) {
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res.setHeader('Content-Type', 'text/html')
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res.setHeader('Content-Length', Buffer.byteLength(html))
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res.end(html)
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}
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export function sendJSON (res, obj) {
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const json = JSON.stringify(obj)
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res.setHeader('Content-Type', 'application/json')
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res.setHeader('Content-Length', Buffer.byteLength(json))
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res.end(json)
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}
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function errorToJSON (err) {
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2016-10-19 12:41:45 +00:00
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const { name, message, stack } = err
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const json = { name, message, stack }
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if (name === 'ModuleBuildError') {
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// webpack compilation error
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const { module: { rawRequest } } = err
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json.module = { rawRequest }
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}
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return json
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}
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