51 lines
1.7 KiB
TypeScript
51 lines
1.7 KiB
TypeScript
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import { Request, RequestHandler, Response } from 'express'
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import { PRODUCTION } from '../constants'
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import { createHash } from 'crypto'
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import processView from './processView'
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import Log from './logger'
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// Renders a View from Disk and Serves it with Caching Enabled
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export async function Static(path: string): Promise<RequestHandler> {
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if (PRODUCTION) {
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Log('INFO', 'static', `Pre-Render: '${path}'`)
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const content = await processView(path, {})
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const length = Buffer.byteLength(content)
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const hash = createHash('md5').update(content).digest('hex')
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return function (req: Request, res: Response) {
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if (req.headers['if-none-match'] === hash) {
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res.status(304).end()
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return
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}
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res.setHeader('Content-Type', 'text/html')
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res.setHeader('Content-Length', length)
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res.setHeader('ETag', hash)
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res.end(content)
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}
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} else {
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return async function (req: Request, res: Response) {
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Log('INFO', 'static', `Render: '${path}'`)
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processView(path, {})
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.then(html => res.send(html))
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.catch(err => res
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.status(500)
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.end('Caught Rendering Error! Check Console for more details.\n' + String(err))
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)
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}
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}
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}
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// Redirect to Another Location
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export function Redirect(location: string) {
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return function (req: Request, res: Response) {
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res.redirect(location)
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}
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}
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// Return a Response Code with an Empty Body
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export function Empty(status: number) {
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return function (req: Request, res: Response) {
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res.status(status).end()
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}
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}
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