import express from 'express'

import cors from 'cors'

import path from 'path'

import { LDP } from './ldp.js'

import { ResourceMapper } from './resource-mapper.js'

import { createMiddleware } from './middleware.js'

import { HttpError } from './error.js'

import { debug } from './utils.js'

export function createApp (options = {}) {

const {

root = process.cwd(),

serverUri = 'https://localhost:8443',

skipAuth = false

} = options

const rootPath = path.resolve(root)

const rootUrl = serverUri.endsWith('/') ? serverUri.slice(0, -1) : serverUri

const mapper = new ResourceMapper({ rootUrl, rootPath })

const ldp = new LDP({ rootPath, rootUrl, mapper })

const app = express()

// CORS

app.use(cors({

methods: ['OPTIONS', 'HEAD', 'GET', 'PATCH', 'POST', 'PUT', 'DELETE'],

exposedHeaders: 'Authorization, User, Location, Link, Vary, Last-Modified, ETag, Accept-Patch, Accept-Post, Accept-Put, Updates-Via, Allow, WAC-Allow, Content-Length, WWW-Authenticate',

credentials: true,

maxAge: 1728000,

origin: true,

preflightContinue: true

}))

// Common headers

app.use((req, res, next) => {

res.set('X-Powered-By', 'solid-server/7.0.0')

res.set('Vary', 'Accept, Authorization, Origin')

next()

})

// LDP middleware

app.use('/', createMiddleware({ ldp, rootUrl, skipAuth }))

// Error handler

app.use((err, req, res, _next) => {

if (err instanceof HttpError) {

debug(`${err.status} ${err.message} — ${req.method} ${req.path}`)

res.status(err.status).send(err.message)

} else {

debug(`500 ${err.message} — ${req.method} ${req.path}`)

res.status(500).send('Internal Server Error')

}

})

app.locals.ldp = ldp

return app

}