Admin page for bill wit iron-session (#13)

lib/authenticate.ts

@@ -0,0 +1,28 @@
+import { IncomingMessage, ServerResponse } from 'http'
+
+export default function authenticate(
+  req: IncomingMessage,
+  res: ServerResponse
+) {
+  const authHeader = req.headers.authorization
+
+  if (!authHeader) {
+    res.setHeader('WWW-Authenticate', 'Basic')
+    res.statusCode = 401
+    return null
+  }
+
+  const [username, password] = Buffer.from(authHeader.split(' ')[1], 'base64')
+    .toString()
+    .split(':')
+
+  // FIXME: pull admin password from env
+  if (username === 'admin' || password === 'secret') {
+    return { username: 'admin', role: 'admin' }
+  }
+
+  res.setHeader('WWW-Authenticate', 'Basic')
+  res.statusCode = 401
+  res.end()
+  return null
+}

lib/session.ts

@@ -0,0 +1,17 @@
+import { withIronSession } from 'next-iron-session'
+
+const SESSION_SECRET =
+  process.env.SESSION_SECRET || 'dev-env-default-secret-991823723'
+
+export default function withSession(handler) {
+  return withIronSession(handler, {
+    password: SESSION_SECRET,
+    cookieName: 'pfadi-bussle-cookie',
+    cookieOptions: {
+      // the next line allows to use the session in non-https environements like
+      // Next.js dev mode (http://localhost:3000)
+      secure: process.env.NODE_ENV === 'production',
+      path: '/admin',
+    },
+  })
+}

package-lock.json

@@ -1345,6 +1345,35 @@
         "@hapi/hoek": "^9.0.0"
       }
     },
+    "@hapi/b64": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/@hapi/b64/-/b64-5.0.0.tgz",
+      "integrity": "sha512-ngu0tSEmrezoiIaNGG6rRvKOUkUuDdf4XTPnONHGYfSGRmDqPZX5oJL6HAdKTo1UQHECbdB4OzhWrfgVppjHUw==",
+      "requires": {
+        "@hapi/hoek": "9.x.x"
+      }
+    },
+    "@hapi/boom": {
+      "version": "9.1.0",
+      "resolved": "https://registry.npmjs.org/@hapi/boom/-/boom-9.1.0.tgz",
+      "integrity": "sha512-4nZmpp4tXbm162LaZT45P7F7sgiem8dwAh2vHWT6XX24dozNjGMg6BvKCRvtCUcmcXqeMIUqWN8Rc5X8yKuROQ==",
+      "requires": {
+        "@hapi/hoek": "9.x.x"
+      }
+    },
+    "@hapi/bourne": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/@hapi/bourne/-/bourne-2.0.0.tgz",
+      "integrity": "sha512-WEezM1FWztfbzqIUbsDzFRVMxSoLy3HugVcux6KDDtTqzPsLE8NDRHfXvev66aH1i2oOKKar3/XDjbvh/OUBdg=="
+    },
+    "@hapi/cryptiles": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@hapi/cryptiles/-/cryptiles-5.1.0.tgz",
+      "integrity": "sha512-fo9+d1Ba5/FIoMySfMqPBR/7Pa29J2RsiPrl7bkwo5W5o+AN1dAYQRi4SPrPwwVxVGKjgLOEWrsvt1BonJSfLA==",
+      "requires": {
+        "@hapi/boom": "9.x.x"
+      }
+    },
     "@hapi/formula": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/@hapi/formula/-/formula-2.0.0.tgz",
@@ -1355,6 +1384,18 @@
       "resolved": "https://registry.npmjs.org/@hapi/hoek/-/hoek-9.1.0.tgz",
       "integrity": "sha512-i9YbZPN3QgfighY/1X1Pu118VUz2Fmmhd6b2n0/O8YVgGGfw0FbUYoA97k7FkpGJ+pLCFEDLUmAPPV4D1kpeFw=="
     },
+    "@hapi/iron": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/@hapi/iron/-/iron-6.0.0.tgz",
+      "integrity": "sha512-zvGvWDufiTGpTJPG1Y/McN8UqWBu0k/xs/7l++HVU535NLHXsHhy54cfEMdW7EjwKfbBfM9Xy25FmTiobb7Hvw==",
+      "requires": {
+        "@hapi/b64": "5.x.x",
+        "@hapi/boom": "9.x.x",
+        "@hapi/bourne": "2.x.x",
+        "@hapi/cryptiles": "5.x.x",
+        "@hapi/hoek": "9.x.x"
+      }
+    },
     "@hapi/joi": {
       "version": "17.1.1",
       "resolved": "https://registry.npmjs.org/@hapi/joi/-/joi-17.1.1.tgz",
@@ -3422,6 +3463,11 @@
         "wrap-ansi": "^6.2.0"
       }
     },
+    "clone": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/clone/-/clone-2.1.2.tgz",
+      "integrity": "sha1-G39Ln1kfHo+DZwQBYANFoCiHQ18="
+    },
     "co": {
       "version": "4.6.0",
       "resolved": "https://registry.npmjs.org/co/-/co-4.6.0.tgz",
@@ -3548,6 +3594,11 @@
         "safe-buffer": "~5.1.1"
       }
     },
+    "cookie": {
+      "version": "0.4.1",
+      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.4.1.tgz",
+      "integrity": "sha512-ZwrFkGJxUR3EIoXtO+yVE69Eb7KlixbaeAWfBQB9vVsNn/o+Yw69gBWSSDK825hQNdN+wF8zELf3dFNl/kxkUA=="
+    },
     "copy-concurrently": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/copy-concurrently/-/copy-concurrently-1.0.5.tgz",
@@ -5169,6 +5220,15 @@
       "integrity": "sha1-+ni/XS5pE8kRzp+BnuUUa7bYROk=",
       "dev": true
     },
+    "iron-store": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/iron-store/-/iron-store-1.3.0.tgz",
+      "integrity": "sha512-Ics0Xy/1TTjOhZFLkarOpWfXp4TJ7foiKBFC/aXJH1bKwafNKrEhrHNeHyA/Jqx57tlhpIbGoNC3RUB+rRIz8Q==",
+      "requires": {
+        "@hapi/iron": "^6.0.0",
+        "clone": "^2.1.2"
+      }
+    },
     "is-accessor-descriptor": {
       "version": "0.1.6",
       "resolved": "https://registry.npmjs.org/is-accessor-descriptor/-/is-accessor-descriptor-0.1.6.tgz",
@@ -7647,6 +7707,17 @@
         }
       }
     },
+    "next-iron-session": {
+      "version": "4.1.9",
+      "resolved": "https://registry.npmjs.org/next-iron-session/-/next-iron-session-4.1.9.tgz",
+      "integrity": "sha512-8AmKWSDXEHc35364zY4y4H0xWLA3f7pqFGBubiuDunxvh159am7sonMoFDPJ7y38UQ8Qa1AHrKMM8qgTGeuhjg==",
+      "requires": {
+        "clone": "^2.1.2",
+        "cookie": "^0.4.1",
+        "debug": "^4.1.1",
+        "iron-store": "^1.3.0"
+      }
+    },
     "next-tick": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/next-tick/-/next-tick-1.0.0.tgz",

package.json

@@ -14,6 +14,7 @@
     "ics": "^2.25.0",
     "mongoose": "^5.10.8",
     "next": "^9.5.4",
+    "next-iron-session": "^4.1.9",
     "react": "16.13.1",
     "react-calendar": "^3.1.0",
     "react-dom": "16.13.1",

pages/admin/booking/[uuid]/bill.tsx

@@ -0,0 +1,320 @@
+import { GetServerSideProps, NextApiHandler, NextApiRequest } from 'next'
+import React, { useEffect, useState } from 'react'
+import Footer from '../../../../components/footer'
+import Header from '../../../../components/header'
+import Input from '../../../../components/input'
+import Select from '../../../../components/select'
+import { AdditionalCost, BillDocument } from '../../../../db/bill'
+import { BookingDocument } from '../../../../db/booking'
+import { BILL_STATUS, MILAGE_TARIFS } from '../../../../db/enums'
+import { getBookingByUUID, getMilageMax } from '../../../../db/index'
+import { dateFormatFrontend } from '../../../../helpers/date'
+import { getBillTotal } from '../../../../helpers/bill'
+import { getBookingStatus } from '../../../../helpers/booking'
+import authenticate from '../../../../lib/authenticate'
+import withSession from '../../../../lib/session'
+
+export const getServerSideProps: GetServerSideProps = withSession(
+  async ({ req, res, params }) => {
+    const { uuid: uuids } = params
+
+    const authenticatedUser = authenticate(req, res)
+    if (!authenticatedUser) {
+      // TODO: not sure if needed
+      req?.session.destroy()
+      return { props: {} }
+    }
+
+    req.session.set('user', authenticatedUser)
+    await req.session.save()
+
+    const uuid = Array.isArray(uuids) ? uuids[0] : uuids
+    const booking = await getBookingByUUID(uuid)
+
+    if (!booking) {
+      res.statusCode = 404
+      res.end()
+      return { props: {} }
+    }
+
+    const milageMax = await getMilageMax()
+    await booking.populate('booker').populate('bill').execPopulate()
+
+    // TODO: hack, not sure why _id is not serilizable
+    const bookingJSON = JSON.parse(JSON.stringify(booking.toJSON()))
+    return {
+      props: { booking: bookingJSON, milageMax },
+    }
+  }
+)
+
+const milageTarifOptions = Object.values(MILAGE_TARIFS).map((tarif) => {
+  return (
+    <option value={tarif} key={tarif}>
+      {getTarifLabel(tarif)}
+    </option>
+  )
+})
+
+const bookingStatusOptions = Object.values(BILL_STATUS).map((status) => {
+  return (
+    <option value={status} key={status}>
+      {getBillStatusLabel(status)}
+    </option>
+  )
+})
+
+function getTarifLabel(tarif: MILAGE_TARIFS) {
+  switch (tarif) {
+    case MILAGE_TARIFS.EXTERN:
+      return 'Extern'
+    case MILAGE_TARIFS.INTERN:
+      return 'Intern'
+    case MILAGE_TARIFS.NOCHARGE:
+      return 'Frei von Kosten'
+    default:
+      return 'Keine'
+  }
+}
+
+function getBillStatusLabel(status: BILL_STATUS) {
+  switch (status) {
+    case BILL_STATUS.UNINVOICED:
+      return 'Nicht gestellt'
+    case BILL_STATUS.INVOICED:
+      return 'Gestellt'
+    case BILL_STATUS.PAID:
+      return 'Bezahlt'
+    default:
+      return 'Unbekannt!!!'
+  }
+}
+
+async function saveBill(
+  booking: BookingDocument,
+  bill: {
+    milageStart: number
+    milageEnd: number
+    milage?: number
+    tarif: MILAGE_TARIFS
+    additionalCosts: AdditionalCost[]
+    status: BILL_STATUS
+  }
+): Promise<BillDocument> {
+  const response = await fetch(`/api/booking/${booking.uuid}/bill`, {
+    method: booking.bill?._id ? 'PATCH' : 'POST',
+    mode: 'cors',
+    cache: 'no-cache',
+    credentials: 'same-origin',
+    headers: {
+      'Content-Type': 'application/json',
+    },
+    referrerPolicy: 'no-referrer',
+    body: JSON.stringify(bill),
+  })
+  return response.json()
+}
+
+export default function BillPage({
+  booking: bookingProp,
+  milageMax,
+}: {
+  booking: BookingDocument
+  milageMax: number
+}) {
+  const [booking, setBooking] = useState(bookingProp)
+  const [milageStart, setMilageStart] = useState(
+    booking?.bill?.milageStart || milageMax
+  )
+  const [milageEnd, setMilageEnd] = useState(booking?.bill?.milageEnd)
+  const [tarif, setTarif] = useState(
+    booking?.bill?.tarif || MILAGE_TARIFS.EXTERN
+  )
+  const [status, setStatus] = useState(booking?.bill?.status)
+  const [additionalCosts, setAdditionalCosts] = useState([])
+  const [storingInProgress, setStoringInProgress] = useState(false)
+  const [storingError, setStoringError] = useState(null)
+  const milage =
+    (0 < milageStart && milageStart < milageEnd && milageEnd - milageStart) || 0
+  const total = getBillTotal({ tarif, milage, additionalCosts })
+
+  // in case the props change, update the internal state
+  useEffect(() => setBooking(bookingProp), [bookingProp])
+
+  const onSubmit = async (event: React.FormEvent<HTMLFormElement>) => {
+    event.preventDefault()
+    setStoringInProgress(true)
+    setStoringError(null)
+
+    try {
+      const bill = await saveBill(booking, {
+        milageStart,
+        milageEnd,
+        milage,
+        tarif,
+        status,
+        additionalCosts,
+      })
+
+      booking.bill = bill
+      setBooking(booking)
+    } catch (error) {
+      setStoringError('Buchung konnte nicht gespeichert werden!')
+      console.error('Failed to store booking', error)
+    }
+    setStoringInProgress(false)
+  }
+
+  const onAddAdditionalCost = function (
+    event: React.MouseEvent<HTMLButtonElement>
+  ) {
+    event.preventDefault()
+    setAdditionalCosts([...additionalCosts, { name: '', value: 0 }])
+  }
+
+  const onRemoveAdditionalCost = function (
+    event: React.MouseEvent<HTMLButtonElement>,
+    index: number
+  ) {
+    event.preventDefault()
+    setAdditionalCosts([
+      ...additionalCosts.slice(0, index),
+      ...additionalCosts.slice(index + 1),
+    ])
+  }
+
+  return (
+    <div className="mx-3 flex flex-col min-h-screen">
+      <Header />
+      <main className="flex-grow">
+        <h2 className="text-3xl">Abrechnung</h2>
+        {booking && (
+          <form className="form" onSubmit={onSubmit}>
+            <div>
+              <strong>Buchungszeitraum:</strong>{' '}
+              {dateFormatFrontend(new Date(booking.startDate))} -{' '}
+              {dateFormatFrontend(new Date(booking.endDate))}
+            </div>
+            <div>
+              <strong>Bucher:</strong> {booking.booker.name}
+            </div>
+            <div>
+              <strong>Buchungsstatus:</strong> {getBookingStatus(booking)}
+            </div>
+            <div>
+              <Input
+                label="Anfangskilometer"
+                name="milageStart"
+                required
+                value={milageStart}
+                type="number"
+                onChange={(e: React.ChangeEvent<React.ElementRef<'input'>>) =>
+                  setMilageStart(Number(e.target.value))
+                }
+              />
+              <Input
+                label="Endkilometer"
+                name="milageEnd"
+                required
+                value={milageEnd}
+                type="number"
+                onChange={(e: React.ChangeEvent<React.ElementRef<'input'>>) =>
+                  setMilageEnd(Number(e.target.value))
+                }
+              />
+              <Input label="Gefahren" name="milage" readOnly value={milage} />
+              <Select
+                label="Rate"
+                value={tarif}
+                onChange={(e) => setTarif(e.target.value as MILAGE_TARIFS)}
+              >
+                {milageTarifOptions}
+              </Select>
+              <div className="mb-3">
+                <button
+                  className="ibtn btn-gray mr-3"
+                  onClick={onAddAdditionalCost}
+                  title="Zusätzliche Kosten hinzufügen"
+                >
+                  +
+                </button>
+                <label className="flabel inline">Zusätzliche Kosten</label>
+              </div>
+              {additionalCosts.map((_, index) => {
+                return (
+                  <>
+                    <div className="mb-3" key={`label${index}`}>
+                      <button
+                        className="ibtn btn-gray mr-3"
+                        onClick={(event) =>
+                          onRemoveAdditionalCost(event, index)
+                        }
+                        title="Entfernen"
+                      >
+                        -
+                      </button>
+                      <label className="flabel inline">{`Kostenpunkt ${
+                        index + 1
+                      }`}</label>
+                    </div>
+                    <div className="ml-10 mb-3" key={`input{index}`}>
+                      <Input
+                        label={`Name`}
+                        name={`additionalCostName${index}`}
+                        key={`additionalCostName${index}`}
+                        value={additionalCosts[index].name}
+                        onChange={(event) => {
+                          const newAdditonalCosts = [...additionalCosts]
+                          newAdditonalCosts[index] = {
+                            value: newAdditonalCosts[index].value,
+                            name: event.target.value,
+                          }
+                          setAdditionalCosts(newAdditonalCosts)
+                        }}
+                      />
+                      <Input
+                        label={`Betrag`}
+                        name={`additionalCostValue${index}`}
+                        key={`additionalCostValue${index}`}
+                        value={additionalCosts[index].value}
+                        type="number"
+                        onChange={(event) => {
+                          const newAdditonalCosts = [...additionalCosts]
+                          newAdditonalCosts[index] = {
+                            name: newAdditonalCosts[index].name,
+                            value: Number(event.target.value),
+                          }
+                          setAdditionalCosts(newAdditonalCosts)
+                        }}
+                      />
+                    </div>
+                  </>
+                )
+              })}
+              <Input label="Summe" name="total" readOnly value={total} />
+            </div>
+            <Select
+              label="Status"
+              value={status}
+              onChange={(e) => setStatus(e.target.value as BILL_STATUS)}
+            >
+              {bookingStatusOptions}
+            </Select>
+            {storingError && (
+              <div className="error-message flex-grow mt-6">{storingError}</div>
+            )}
+            <button
+              type="submit"
+              className="btn btn-blue mt-3"
+              disabled={storingInProgress}
+            >
+              Rechnung {booking.bill?._id ? 'Updaten' : 'Erstellen'}
+            </button>
+          </form>
+        )}
+      </main>
+
+      <Footer />
+    </div>
+  )
+}

pages/api/booking/[uuid]/bill.ts

@@ -1,18 +1,20 @@
-import { NextApiRequest, NextApiResponse } from 'next'
 import { BillDocument } from '../../../../db/bill'
 import { createBill, patchBill } from '../../../../db/index'
+import withSession from '../../../../lib/session'
 
-export default async function userHandler(
-  req: NextApiRequest,
-  res: NextApiResponse
-) {
+export default withSession(async function billHandler(req, res) {
   const {
     method,
     query: { uuid: uuids },
   } = req
-
   const bookingUUID = Array.isArray(uuids) ? uuids[0] : uuids
 
+  const user = req?.session.get('user')
+  if (!user || user.role !== 'admin') {
+    res.status(401).end('Your are unauthorized. Best to move along...')
+    return
+  }
+
   let bill: BillDocument
 
   switch (method) {
@@ -40,4 +42,4 @@ export default async function userHandler(
       res.setHeader('Allow', ['POST'])
       res.status(405).end(`Method ${method} Not Allowed`)
   }
-}
+})

pages/booking/[uuid]/bill.tsx

@@ -1,304 +0,0 @@
-import { GetServerSideProps } from 'next'
-import React, { useEffect, useState } from 'react'
-import Footer from '../../../components/footer'
-import Header from '../../../components/header'
-import Input from '../../../components/input'
-import Select from '../../../components/select'
-import { AdditionalCost, BillDocument } from '../../../db/bill'
-import { BookingDocument } from '../../../db/booking'
-import { BILL_STATUS, MILAGE_TARIFS } from '../../../db/enums'
-import { getBookingByUUID, getMilageMax } from '../../../db/index'
-import { dateFormatFrontend } from '../../../helpers/date'
-import { getBillTotal } from '../../../helpers/bill'
-import { getBookingStatus } from '../../../helpers/booking'
-
-const milageTarifOptions = Object.values(MILAGE_TARIFS).map((tarif) => {
-  return (
-    <option value={tarif} key={tarif}>
-      {getTarifLabel(tarif)}
-    </option>
-  )
-})
-
-const bookingStatusOptions = Object.values(BILL_STATUS).map((status) => {
-  return (
-    <option value={status} key={status}>
-      {getBillStatusLabel(status)}
-    </option>
-  )
-})
-
-export const getServerSideProps: GetServerSideProps = async (context) => {
-  const {
-    res,
-    params: { uuid: uuids },
-  } = context
-  const uuid = Array.isArray(uuids) ? uuids[0] : uuids
-  const booking = await getBookingByUUID(uuid)
-  await booking.populate('booker').populate('bill').execPopulate()
-
-  if (!booking) {
-    res.statusCode = 404
-    res.end()
-    return { props: {} }
-  }
-
-  const milageMax = await getMilageMax()
-
-  // TODO: hack, not sure why _id is not serilizable
-  const bookingJSON = JSON.parse(JSON.stringify(booking.toJSON()))
-  return {
-    props: { booking: bookingJSON, milageMax },
-  }
-}
-
-function getTarifLabel(tarif: MILAGE_TARIFS) {
-  switch (tarif) {
-    case MILAGE_TARIFS.EXTERN:
-      return 'Extern'
-    case MILAGE_TARIFS.INTERN:
-      return 'Intern'
-    case MILAGE_TARIFS.NOCHARGE:
-      return 'Frei von Kosten'
-    default:
-      return 'Keine'
-  }
-}
-
-function getBillStatusLabel(status: BILL_STATUS) {
-  switch (status) {
-    case BILL_STATUS.UNINVOICED:
-      return 'Nicht gestellt'
-    case BILL_STATUS.INVOICED:
-      return 'Gestellt'
-    case BILL_STATUS.PAID:
-      return 'Bezahlt'
-    default:
-      return 'Unbekannt!!!'
-  }
-}
-
-async function saveBill(
-  booking: BookingDocument,
-  bill: {
-    milageStart: number
-    milageEnd: number
-    milage?: number
-    tarif: MILAGE_TARIFS
-    additionalCosts: AdditionalCost[]
-    status: BILL_STATUS
-  }
-): Promise<BillDocument> {
-  const response = await fetch(`/api/booking/${booking.uuid}/bill/`, {
-    method: booking.bill?._id ? 'PATCH' : 'POST',
-    mode: 'cors',
-    cache: 'no-cache',
-    credentials: 'same-origin',
-    headers: {
-      'Content-Type': 'application/json',
-    },
-    referrerPolicy: 'no-referrer',
-    body: JSON.stringify(bill),
-  })
-  return response.json()
-}
-
-export default function BillPage({
-  booking: bookingProp,
-  milageMax,
-}: {
-  booking: BookingDocument
-  milageMax: number
-}) {
-  const [booking, setBooking] = useState(bookingProp)
-  const [milageStart, setMilageStart] = useState(
-    booking.bill?.milageStart || milageMax
-  )
-  const [milageEnd, setMilageEnd] = useState(booking.bill?.milageEnd)
-  const [tarif, setTarif] = useState(
-    booking.bill?.tarif || MILAGE_TARIFS.EXTERN
-  )
-  const [status, setStatus] = useState(booking.bill?.status)
-  const [additionalCosts, setAdditionalCosts] = useState([])
-  const [storingInProgress, setStoringInProgress] = useState(false)
-  const [storingError, setStoringError] = useState(null)
-  const milage =
-    (0 < milageStart && milageStart < milageEnd && milageEnd - milageStart) || 0
-  const total = getBillTotal({ tarif, milage, additionalCosts })
-
-  // in case the props change, update the internal state
-  useEffect(() => setBooking(bookingProp), [bookingProp])
-
-  const onSubmit = async (event: React.FormEvent<HTMLFormElement>) => {
-    event.preventDefault()
-    setStoringInProgress(true)
-    setStoringError(null)
-
-    try {
-      const bill = await saveBill(booking, {
-        milageStart,
-        milageEnd,
-        milage,
-        tarif,
-        status,
-        additionalCosts,
-      })
-
-      booking.bill = bill
-      setBooking(booking)
-    } catch (error) {
-      setStoringError('Buchung konnte nicht gespeichert werden!')
-      console.error('Failed to store booking', error)
-    }
-    setStoringInProgress(false)
-  }
-
-  const onAddAdditionalCost = function (
-    event: React.MouseEvent<HTMLButtonElement>
-  ) {
-    event.preventDefault()
-    setAdditionalCosts([...additionalCosts, { name: '', value: 0 }])
-  }
-
-  const onRemoveAdditionalCost = function (
-    event: React.MouseEvent<HTMLButtonElement>,
-    index: number
-  ) {
-    event.preventDefault()
-    setAdditionalCosts([
-      ...additionalCosts.slice(0, index),
-      ...additionalCosts.slice(index + 1),
-    ])
-  }
-
-  return (
-    <div className="mx-3 flex flex-col min-h-screen">
-      <Header />
-      <main className="flex-grow">
-        <h2 className="text-3xl">Abrechnung</h2>
-        <form className="form" onSubmit={onSubmit}>
-          <div>
-            <strong>Buchungszeitraum:</strong>{' '}
-            {dateFormatFrontend(new Date(booking.startDate))} -{' '}
-            {dateFormatFrontend(new Date(booking.endDate))}
-          </div>
-          <div>
-            <strong>Bucher:</strong> {booking.booker.name}
-          </div>
-          <div>
-            <strong>Buchungsstatus:</strong> {getBookingStatus(booking)}
-          </div>
-          <div>
-            <Input
-              label="Anfangskilometer"
-              name="milageStart"
-              required
-              value={milageStart}
-              type="number"
-              onChange={(e: React.ChangeEvent<React.ElementRef<'input'>>) =>
-                setMilageStart(Number(e.target.value))
-              }
-            />
-            <Input
-              label="Endkilometer"
-              name="milageEnd"
-              required
-              value={milageEnd}
-              type="number"
-              onChange={(e: React.ChangeEvent<React.ElementRef<'input'>>) =>
-                setMilageEnd(Number(e.target.value))
-              }
-            />
-            <Input label="Gefahren" name="milage" readOnly value={milage} />
-            <Select
-              label="Rate"
-              value={tarif}
-              onChange={(e) => setTarif(e.target.value as MILAGE_TARIFS)}
-            >
-              {milageTarifOptions}
-            </Select>
-            <div className="mb-3">
-              <button
-                className="ibtn btn-gray mr-3"
-                onClick={onAddAdditionalCost}
-                title="Zusätzliche Kosten hinzufügen"
-              >
-                +
-              </button>
-              <label className="flabel inline">Zusätzliche Kosten</label>
-            </div>
-            {additionalCosts.map((_, index) => {
-              return (
-                <>
-                  <div className="mb-3" key={`label${index}`}>
-                    <button
-                      className="ibtn btn-gray mr-3"
-                      onClick={(event) => onRemoveAdditionalCost(event, index)}
-                      title="Entfernen"
-                    >
-                      -
-                    </button>
-                    <label className="flabel inline">{`Kostenpunkt ${
-                      index + 1
-                    }`}</label>
-                  </div>
-                  <div className="ml-10 mb-3" key={`input{index}`}>
-                    <Input
-                      label={`Name`}
-                      name={`additionalCostName${index}`}
-                      key={`additionalCostName${index}`}
-                      value={additionalCosts[index].name}
-                      onChange={(event) => {
-                        const newAdditonalCosts = [...additionalCosts]
-                        newAdditonalCosts[index] = {
-                          value: newAdditonalCosts[index].value,
-                          name: event.target.value,
-                        }
-                        setAdditionalCosts(newAdditonalCosts)
-                      }}
-                    />
-                    <Input
-                      label={`Betrag`}
-                      name={`additionalCostValue${index}`}
-                      key={`additionalCostValue${index}`}
-                      value={additionalCosts[index].value}
-                      type="number"
-                      onChange={(event) => {
-                        const newAdditonalCosts = [...additionalCosts]
-                        newAdditonalCosts[index] = {
-                          name: newAdditonalCosts[index].name,
-                          value: Number(event.target.value),
-                        }
-                        setAdditionalCosts(newAdditonalCosts)
-                      }}
-                    />
-                  </div>
-                </>
-              )
-            })}
-            <Input label="Summe" name="total" readOnly value={total} />
-          </div>
-          <Select
-            label="Status"
-            value={status}
-            onChange={(e) => setStatus(e.target.value as BILL_STATUS)}
-          >
-            {bookingStatusOptions}
-          </Select>
-          {storingError && (
-            <div className="error-message flex-grow mt-6">{storingError}</div>
-          )}
-          <button
-            type="submit"
-            className="btn btn-blue mt-3"
-            disabled={storingInProgress}
-          >
-            Rechnung {booking.bill?._id ? 'Updaten' : 'Erstellen'}
-          </button>
-        </form>
-      </main>
-
-      <Footer />
-    </div>
-  )
-}