update deps

* update deps

* changelog

* allow 'y' as yes values

.dockerignore

@@ -0,0 +1,5 @@
+*
+!src
+!tsconfig.json
+!package.json
+!pnpm-lock.yaml

.github/workflows/build.yml

@@ -0,0 +1,26 @@
+name: Build Docker image
+
+on:
+  pull_request:
+  push:
+
+concurrency:
+  group: build
+  cancel-in-progress: true
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+        with:
+          install: true
+
+      - name: Build and push
+        uses: docker/build-push-action@v3
+        with:
+          platforms: linux/amd64,linux/arm64
+          push: false

.github/workflows/docker.yml

@@ -1,39 +1,47 @@
-name: ci
+name: Publish Docker image
 
 on:
-  workflow_dispatch:
+  release:
-  push:
+    types: [published]
-    tags:
-      - "v*.*.*"
 
 jobs:
   docker:
     runs-on: ubuntu-latest
     steps:
       - name: Set up QEMU
-        uses: docker/setup-qemu-action@v1
+        uses: docker/setup-qemu-action@v2
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v1
+        uses: docker/setup-buildx-action@v2
+        with:
+          install: true
+
       - name: Docker Labels
         id: meta
-        uses: crazy-max/ghaction-docker-meta@v2
+        uses: docker/metadata-action@v4
         with:
-          images: cupcakearmy/ddns-cloudflare
+          images: |
+            cupcakearmy/ddns-cloudflare
+            ghcr.io/${{ github.repository }}
           tags: |
             type=semver,pattern={{version}}
             type=semver,pattern={{major}}.{{minor}}
             type=semver,pattern={{major}}
-      - name: Login to DockerHub
+
-        uses: docker/login-action@v1
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v2
         with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          username: ${{ secrets.DOCKER_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
+          password: ${{ secrets.DOCKER_TOKEN }}
+      - name: Log in to the Container registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
       - name: Build and push
-        id: docker_build
+        uses: docker/build-push-action@v3
-        uses: docker/build-push-action@v2
         with:
           platforms: linux/amd64,linux/arm64
           push: true
           tags: ${{ steps.meta.outputs.tags }}
-      - name: Image digest
-        run: echo ${{ steps.docker_build.outputs.digest }}

.gitignore

@@ -1,4 +1,5 @@
 .env
 ip.log
-
+dist
 node_modules
+.vscode

.sample.env

@@ -1,9 +1,10 @@
 # Required
-EMAIL=my@mail.com
+TOKEn=myapitoken
-KEY=my_api_key
 ZONE=example.org
 DNS_RECORD=some.example.org
 
 # Optional
+#PROXIED=false
 #CRON=* * * * *
-#RESOLVER=http://ipv4.icanhazip.com/
+#RESOLVER=http://ipv4.icanhazip.com/
+#LOG_LEVEL=debug

CHANGELOG.md

@@ -5,13 +5,77 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.3.2] - 2023-06-24
+
+### Security
+
+- Updated dependencies.
+
+## [1.3.1] - 2022-11-28
+
+### Added
+
+- `y` is now a valid truthy value.
+
+### Security
+
+- Updated dependencies.
+
+## [1.3.0] - 2022-10-20
+
+### Removed
+
+- Login with username and password as it's considered deprecated.
+
+### Added
+
+- `LOG_LEVEL` env variable.
+- Config parsing and validation.
+
+### Changed
+
+- Removed Cloudflare SDK due to outdated and bloated package.
+
+## [1.2.1] - 2022-05-14
+
+### Added
+
+- Support for `proxied` parameter thanks to @borisbm.
+
+### Security
+
+- Updated dependencies.
+
+## [1.2.0] - 2022-02-07
+
+### Added
+
+- Sigterm and Sigkill hooks for graceful shutdown
+
+### Changed
+
+- Multistage steps to reduce image size
+
+## [1.1.1] - 2022-02-07
+
+### Security
+
+- Updated dependencies.
+
+## [1.1.0] - 2021-10-22
+
+### Changed
+
+- Added typescript for type safety.
+- Switched to pnpm.
+
 ## [1.0.0] - 2021-05-05
 
 ### Added
 
-- automated build & tagging
+- Automated build & tagging.
-- arm images
+- Arm images.
 
 ### Security
 
-- updated dependencies
+- Updated dependencies.

Dockerfile

@@ -1,9 +1,19 @@
-FROM node:14-alpine
+FROM node:20-alpine as base
-
 WORKDIR /app
+RUN npm -g i pnpm
 
-ADD ./package.json yarn.lock ./
-RUN yarn
-ADD ./script.js ./
 
-CMD ["node", "script.js"]
+FROM base as builder
+ADD ./package.json ./pnpm-lock.yaml ./
+RUN pnpm install --frozen-lockfile
+ADD . .
+RUN pnpm run build
+
+FROM base
+ADD ./package.json ./pnpm-lock.yaml ./
+RUN pnpm install --frozen-lockfile --prod
+COPY --from=builder /app/dist/ /app/dist/
+
+STOPSIGNAL SIGTERM
+
+CMD ["pnpm", "start"]

README.md

@@ -1,7 +1,8 @@
 # Docker DDNS Cloudflare
 
-![Docker Size](https://img.shields.io/docker/image-size/cupcakearmy/ddns-cloudflare)
+![Docker Pulls](https://img.shields.io/docker/pulls/cupcakearmy/ddns-cloudflare?style=flat-square)
-![Docker Downloads](https://img.shields.io/docker/pulls/cupcakearmy/ddns-cloudflare)
+![Docker Image Size (tag)](https://img.shields.io/docker/image-size/cupcakearmy/ddns-cloudflare/latest?style=flat-square)
+![Docker Image Version (tag latest semver)](https://img.shields.io/docker/v/cupcakearmy/ddns-cloudflare/latest?style=flat-square)
 
 ## Features 🌈
 
@@ -11,19 +12,18 @@
 
 ## Quickstart 🚀
 
-1. Get your api token [here](https://dash.cloudflare.com/profile/api-tokens) (Top right -> My Profile -> API Tokens)
+1. Get your API Token [here](https://dash.cloudflare.com/profile/api-tokens) (Top right -> My Profile -> API Tokens)
 
 Click create token. You can then use the Edit DNS Zone template. Give it a name.
 
-![Settings](https://i.imgur.com/dLs8PHs.png)
-
 2. Create an `.env` file:
 
 ```bash
-EMAIL=my@mail.com
+TOKEN=mytoken
-KEY=my_api_key
+
 ZONE=example.org
 DNS_RECORD=some.example.org
+PROXIED=false
 ```
 
 3. Run the container
@@ -32,12 +32,6 @@ DNS_RECORD=some.example.org
 docker run -d --name ddns --restart always --env-file .env cupcakearmy/ddns-cloudflare
 ```
 
-To check logs:
-
-```bash
-docker logs ddns
-```
-
 ### Docker-Copmose
 
 With docker-compose:
@@ -49,6 +43,18 @@ cp .sample.env .env
 docker-compose up -d
 ```
 
+## ENV Reference
+
+| Env          | Default                  | Description                                                                                                 |
+| ------------ | ------------------------ | ----------------------------------------------------------------------------------------------------------- |
+| `TOKEN`      |                          | API Token.                                                                                                  |
+| `ZONE`       |                          | Cloudflare zone where your domain is.                                                                       |
+| `DNS_RECORD` |                          | The actual DNS record that should be updated.                                                               |
+| `PROXIED`    | `true`                   | Whether the record is proxied by CloudFlare or not.                                                         |
+| `CRON`       | `*/5 * * * *`            | Frequency of updates.                                                                                       |
+| `RESOLVER`   | `https://api.ipify.org/` | The endpoint used to determine your public ip.                                                              |
+| `LOG_LEVEL`  | `info`                   | Log level to run at. See [winston](https://github.com/winstonjs/winston#logging-levels) for possible values |
+
 ## Customize
 
 ### Custom CRON

docker-compose.yml

@@ -1,4 +1,4 @@
-version: '3.7'
+version: '3.8'
 
 services:
   ddns:

package.json

@@ -1,14 +1,23 @@
 {
+  "packageManager": "pnpm@8.6.3",
+  "version": "1.3.2",
   "license": "MIT",
+  "type": "module",
+  "main": "dist",
   "scripts": {
-    "docker:build": "docker build -t cupcakearmy/ddns-cloudflare:lastest .",
+    "dev": "tsc -w",
-    "docker:push": "docker push cupcakearmy/ddns-cloudflare:lastest",
+    "build": "tsc",
-    "docker:publish": "yarn run docker:build && yarn run docker:push"
+    "start": "node ."
   },
   "dependencies": {
-    "axios": "^0.21.1",
+    "axios": "^1.4.0",
-    "cloudflare": "^2.7.0",
+    "dotenv": "^16.3.1",
-    "cron": "^1.8.2",
+    "node-cron": "^3.0.2",
-    "dotenv": "^8.2.0"
+    "winston": "^3.9.0"
+  },
+  "devDependencies": {
+    "@types/node": "^20.3.1",
+    "@types/node-cron": "^3.0.7",
+    "typescript": "^5.1.3"
   }
 }

pnpm-lock.yaml

@@ -0,0 +1,302 @@
+lockfileVersion: '6.0'
+
+settings:
+  autoInstallPeers: true
+  excludeLinksFromLockfile: false
+
+dependencies:
+  axios:
+    specifier: ^1.4.0
+    version: 1.4.0
+  dotenv:
+    specifier: ^16.3.1
+    version: 16.3.1
+  node-cron:
+    specifier: ^3.0.2
+    version: 3.0.2
+  winston:
+    specifier: ^3.9.0
+    version: 3.9.0
+
+devDependencies:
+  '@types/node':
+    specifier: ^20.3.1
+    version: 20.3.1
+  '@types/node-cron':
+    specifier: ^3.0.7
+    version: 3.0.7
+  typescript:
+    specifier: ^5.1.3
+    version: 5.1.3
+
+packages:
+
+  /@colors/colors@1.5.0:
+    resolution: {integrity: sha512-ooWCrlZP11i8GImSjTHYHLkvFDP48nS4+204nGb1RiX/WXYHmJA2III9/e2DWVabCESdW7hBAEzHRqUn9OUVvQ==}
+    engines: {node: '>=0.1.90'}
+    dev: false
+
+  /@dabh/diagnostics@2.0.3:
+    resolution: {integrity: sha512-hrlQOIi7hAfzsMqlGSFyVucrx38O+j6wiGOf//H2ecvIEqYN4ADBSS2iLMh5UFyDunCNniUIPk/q3riFv45xRA==}
+    dependencies:
+      colorspace: 1.1.4
+      enabled: 2.0.0
+      kuler: 2.0.0
+    dev: false
+
+  /@types/node-cron@3.0.7:
+    resolution: {integrity: sha512-9PuLtBboc/+JJ7FshmJWv769gDonTpItN0Ol5TMwclpSQNjVyB2SRxSKBcTtbSysSL5R7Oea06kTTFNciCoYwA==}
+    dev: true
+
+  /@types/node@20.3.1:
+    resolution: {integrity: sha512-EhcH/wvidPy1WeML3TtYFGR83UzjxeWRen9V402T8aUGYsCHOmfoisV3ZSg03gAFIbLq8TnWOJ0f4cALtnSEUg==}
+    dev: true
+
+  /@types/triple-beam@1.3.2:
+    resolution: {integrity: sha512-txGIh+0eDFzKGC25zORnswy+br1Ha7hj5cMVwKIU7+s0U2AxxJru/jZSMU6OC9MJWP6+pc/hc6ZjyZShpsyY2g==}
+    dev: false
+
+  /async@3.2.4:
+    resolution: {integrity: sha512-iAB+JbDEGXhyIUavoDl9WP/Jj106Kz9DEn1DPgYw5ruDn0e3Wgi3sKFm55sASdGBNOQB8F59d9qQ7deqrHA8wQ==}
+    dev: false
+
+  /asynckit@0.4.0:
+    resolution: {integrity: sha512-Oei9OH4tRh0YqU3GxhX79dM/mwVgvbZJaSNaRk+bshkj0S5cfHcgYakreBjrHwatXKbz+IoIdYLxrKim2MjW0Q==}
+    dev: false
+
+  /axios@1.4.0:
+    resolution: {integrity: sha512-S4XCWMEmzvo64T9GfvQDOXgYRDJ/wsSZc7Jvdgx5u1sd0JwsuPLqb3SYmusag+edF6ziyMensPVqLTSc1PiSEA==}
+    dependencies:
+      follow-redirects: 1.15.2
+      form-data: 4.0.0
+      proxy-from-env: 1.1.0
+    transitivePeerDependencies:
+      - debug
+    dev: false
+
+  /color-convert@1.9.3:
+    resolution: {integrity: sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==}
+    dependencies:
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+    dev: false
+
+  /color-name@1.1.3:
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+    dev: false
+
+  /color-name@1.1.4:
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+    dev: false
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+  /color-string@1.9.1:
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+    dependencies:
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+      simple-swizzle: 0.2.2
+    dev: false
+
+  /color@3.2.1:
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+    dependencies:
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+      color-string: 1.9.1
+    dev: false
+
+  /colorspace@1.1.4:
+    resolution: {integrity: sha512-BgvKJiuVu1igBUF2kEjRCZXol6wiiGbY5ipL/oVPwm0BL9sIpMIzM8IK7vwuxIIzOXMV3Ey5w+vxhm0rR/TN8w==}
+    dependencies:
+      color: 3.2.1
+      text-hex: 1.0.0
+    dev: false
+
+  /combined-stream@1.0.8:
+    resolution: {integrity: sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==}
+    engines: {node: '>= 0.8'}
+    dependencies:
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+  /follow-redirects@1.15.2:
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+    engines: {node: '>=4.0'}
+    peerDependencies:
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+    peerDependenciesMeta:
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+    dependencies:
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+  /inherits@2.0.4:
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+    dev: false
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+    engines: {node: '>=6.0.0'}
+    dependencies:
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+    engines: {node: '>=10'}
+    dev: false
+
+  /simple-swizzle@0.2.2:
+    resolution: {integrity: sha512-JA//kQgZtbuY83m+xT+tXJkmJncGMTFT+C+g2h2R9uxkYIrE2yy9sgmcLhCnw57/WSD+Eh3J97FPEDFnbXnDUg==}
+    dependencies:
+      is-arrayish: 0.3.2
+    dev: false
+
+  /stack-trace@0.0.10:
+    resolution: {integrity: sha512-KGzahc7puUKkzyMt+IqAep+TVNbKP+k2Lmwhub39m1AsTSkaDutx56aDCo+HLDzf/D26BIHTJWNiTG1KAJiQCg==}
+    dev: false
+
+  /string_decoder@1.3.0:
+    resolution: {integrity: sha512-hkRX8U1WjJFd8LsDJ2yQ/wWWxaopEsABU1XfkM8A+j0+85JAGppt16cr1Whg6KIbb4okU6Mql6BOj+uup/wKeA==}
+    dependencies:
+      safe-buffer: 5.2.1
+    dev: false
+
+  /text-hex@1.0.0:
+    resolution: {integrity: sha512-uuVGNWzgJ4yhRaNSiubPY7OjISw4sw4E5Uv0wbjp+OzcbmVU/rsT8ujgcXJhn9ypzsgr5vlzpPqP+MBBKcGvbg==}
+    dev: false
+
+  /triple-beam@1.3.0:
+    resolution: {integrity: sha512-XrHUvV5HpdLmIj4uVMxHggLbFSZYIn7HEWsqePZcI50pco+MPqJ50wMGY794X7AOOhxOBAjbkqfAbEe/QMp2Lw==}
+    dev: false
+
+  /typescript@5.1.3:
+    resolution: {integrity: sha512-XH627E9vkeqhlZFQuL+UsyAXEnibT0kWR2FWONlr4sTjvxyJYnyefgrkyECLzM5NenmKzRAy2rR/OlYLA1HkZw==}
+    engines: {node: '>=14.17'}
+    hasBin: true
+    dev: true
+
+  /util-deprecate@1.0.2:
+    resolution: {integrity: sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw==}
+    dev: false
+
+  /uuid@8.3.2:
+    resolution: {integrity: sha512-+NYs2QeMWy+GWFOEm9xnn6HCDp0l7QBD7ml8zLUmJ+93Q5NF0NocErnwkTkXVFNiX3/fpC6afS8Dhb/gz7R7eg==}
+    hasBin: true
+    dev: false
+
+  /winston-transport@4.5.0:
+    resolution: {integrity: sha512-YpZzcUzBedhlTAfJg6vJDlyEai/IFMIVcaEZZyl3UXIl4gmqRpU7AE89AHLkbzLUsv0NVmw7ts+iztqKxxPW1Q==}
+    engines: {node: '>= 6.4.0'}
+    dependencies:
+      logform: 2.5.1
+      readable-stream: 3.6.2
+      triple-beam: 1.3.0
+    dev: false
+
+  /winston@3.9.0:
+    resolution: {integrity: sha512-jW51iW/X95BCW6MMtZWr2jKQBP4hV5bIDq9QrIjfDk6Q9QuxvTKEAlpUNAzP+HYHFFCeENhph16s0zEunu4uuQ==}
+    engines: {node: '>= 12.0.0'}
+    dependencies:
+      '@colors/colors': 1.5.0
+      '@dabh/diagnostics': 2.0.3
+      async: 3.2.4
+      is-stream: 2.0.1
+      logform: 2.5.1
+      one-time: 1.0.0
+      readable-stream: 3.6.2
+      safe-stable-stringify: 2.4.3
+      stack-trace: 0.0.10
+      triple-beam: 1.3.0
+      winston-transport: 4.5.0
+    dev: false

script.js

@@ -1,69 +0,0 @@
-const { readFileSync, writeFileSync, existsSync } = require('fs')
-const Cloudflare = require('cloudflare')
-const Axios = require('axios')
-const { CronJob } = require('cron')
-
-require('dotenv').config()
-
-const { EMAIL, KEY, ZONE, DNS_RECORD, CRON, RESOLVER } = process.env
-
-const cf = Cloudflare({
-  email: EMAIL,
-  key: KEY,
-})
-
-function log(message) {
-  const timestamp = new Date().toISOString().replace(/T/, ' ').replace(/\..+/, '')
-  console.log(timestamp + '\t' + message)
-}
-
-async function getCurrentIp() {
-  const { data } = await Axios({
-    url: RESOLVER || 'https://api.ipify.org/',
-    method: 'GET',
-  })
-  return data
-}
-
-async function checkIfUpdateIsRequired() {
-  const LOG = './ip.log'
-  const current = await getCurrentIp()
-  const saved = existsSync(LOG) ? readFileSync(LOG, 'utf-8') : null
-
-  if (current === saved) return false
-  else {
-    writeFileSync(LOG, current, { encoding: 'utf-8' })
-    return current
-  }
-}
-
-async function update(newIP) {
-  const { result: zones } = await cf.zones.browse({ name: ZONE })
-  if (!zones.length) throw new Error(`No ZONE "${ZONE}" found`)
-
-  const zoneId = zones[0].id
-  const { result: records } = await cf.dnsRecords.browse(zoneId, { name: DNS_RECORD, type: 'A' })
-
-  const recordAlreadyExists = records.length
-  if (recordAlreadyExists) {
-    const { id: recordId, ...rest } = records[0]
-    await cf.dnsRecords.edit(zoneId, recordId, { ...rest, content: newIP })
-    log(`Updated:\t${DNS_RECORD} → ${newIP} `)
-  } else {
-    await cf.dnsRecords.add(zoneId, {
-      name: DNS_RECORD,
-      type: 'A',
-      content: newIP,
-    })
-    log(`Created:\t${DNS_RECORD} → ${newIP} `)
-  }
-}
-
-async function main() {
-  const changed = await checkIfUpdateIsRequired()
-  log(`Running. Update required: ${!!changed}`)
-  if (changed) await update(changed).catch((e) => console.error(e.message))
-}
-
-new CronJob(CRON || '*/5 * * * *', main, null, true, null, null, true)
-log('Started service.')

src/cache.ts

@@ -0,0 +1 @@
+export const Cache = new Map<'ip' | 'zone', string>()

src/cloudflare.ts

@@ -0,0 +1,126 @@
+import axios from 'axios'
+
+import { Cache } from './cache.js'
+import { Config } from './config.js'
+import { logger } from './logger.js'
+
+type DNSRecord = {
+  id: string
+  zone_id: string
+  zone_name: string
+  name: string
+  type: string
+  content: string
+  proxiable: boolean
+  proxied: boolean
+  ttl: number // 1 means automatic
+  locked: boolean
+}
+
+type DNSRecordCreate = Pick<DNSRecord, 'name' | 'type' | 'ttl' | 'proxied' | 'content'>
+type DNSRecordPatch = Partial<DNSRecordCreate>
+
+const Base = axios.create({
+  baseURL: 'https://api.cloudflare.com/client/v4',
+  headers: {
+    Authorization: `Bearer ${Config.auth.token}`,
+  },
+})
+
+export const API = {
+  zones: {
+    async findByName(name: string): Promise<string | null> {
+      try {
+        const { data } = await Base({
+          url: '/zones',
+          params: {
+            name,
+          },
+        })
+        return data.result[0].id
+      } catch {
+        return null
+      }
+    },
+  },
+  records: {
+    async create(zoneId: string, zone: DNSRecordCreate): Promise<void> {
+      await Base({
+        url: `/zones/${zoneId}/dns_records`,
+        method: 'POST',
+        data: zone,
+      })
+    },
+    async remove(zoneId: string, recordId: string): Promise<void> {
+      await Base({
+        url: `/zones/${zoneId}/dns_records/${recordId}`,
+        method: 'DELETE',
+      })
+    },
+    async patch(zoneId: string, recordId: string, data: DNSRecordPatch): Promise<void> {
+      await Base({
+        url: `/zones/${zoneId}/dns_records/${recordId}`,
+        method: 'PATCH',
+        data,
+      })
+    },
+    async find(zoneId: string): Promise<DNSRecord[]> {
+      const { data } = await Base({
+        url: `/zones/${zoneId}/dns_records`,
+        params: {
+          type: 'A',
+          name: Config.dns.record,
+        },
+      })
+      return data.result as DNSRecord[]
+    },
+  },
+}
+
+export async function update(ip: string) {
+  // Find zone
+  if (!Cache.has('zone')) {
+    logger.debug('Fetching zone')
+    const zone = await API.zones.findByName(Config.dns.zone)
+    if (!zone) {
+      logger.error(`Zone "${Config.dns.zone}"" not found`)
+      process.exit(1)
+    }
+    Cache.set('zone', zone)
+  }
+
+  const zoneId = Cache.get('zone')!
+  logger.debug(`Zone ID: ${zoneId}`)
+
+  // Set record
+  const records = await API.records.find(zoneId)
+
+  logger.debug('Updating record', ip)
+
+  switch (records.length) {
+    case 0:
+      // Create DNS Record
+      logger.debug('Creating DNS record')
+      await API.records.create(zoneId, {
+        content: ip,
+        name: Config.dns.record,
+        proxied: Config.dns.proxied,
+        ttl: 1,
+        type: 'A',
+      })
+      return
+    case 1:
+      // Only one record, thats fine
+      break
+    default:
+      // More than one record, delete all but the first
+      logger.debug('Deleting other DNS records')
+      for (const record of records.slice(1)) {
+        await API.records.remove(zoneId, record.id)
+      }
+      break
+  }
+
+  // Update the remaining record
+  await API.records.patch(zoneId, records[0]!.id, { content: ip, proxied: Config.dns.proxied })
+}

src/config.ts

@@ -0,0 +1,50 @@
+import { config } from 'dotenv'
+import { validate } from 'node-cron'
+
+config()
+
+function getEnv(key: string, fallback: string, parse?: undefined, validator?: (s: string) => boolean): string
+function getEnv<T>(key: string, fallback: T, parse: (value: string) => T, validator?: (T: string) => boolean): T
+function getEnv<T>(
+  key: string,
+  fallback: T,
+  parse?: (value: string) => T,
+  validator?: (s: string | T) => boolean
+): T | string {
+  const value = process.env[key]
+  const parsed = value === undefined ? fallback : parse ? parse(value) : value
+  if (validator && !validator(parsed)) {
+    console.error(`Invalid or missing value for ${key}: ${value}`)
+    process.exit(1)
+  }
+  return parsed
+}
+
+function parseBoolean(value: string): boolean {
+  value = value.toLowerCase()
+  const truthy = ['true', 'yes', '1', 'y']
+  return truthy.includes(value)
+}
+
+function isPresent(s: string): boolean {
+  return s.length > 0
+}
+
+export const Config = {
+  version: getEnv('npm_package_version', 'unknown'),
+  logging: {
+    level: getEnv('LOG_LEVEL', 'info'),
+  },
+  auth: {
+    token: getEnv('TOKEN', '', undefined, isPresent),
+  },
+  dns: {
+    zone: getEnv('ZONE', '', undefined, isPresent),
+    record: getEnv('DNS_RECORD', '', undefined, isPresent),
+    proxied: getEnv('PROXIED', false, parseBoolean),
+  },
+  runner: {
+    cron: getEnv('CRON', '*/5 * * * *', undefined, (s) => validate(s)),
+    resolver: getEnv('RESOLVER', 'https://api.ipify.org'),
+  },
+}

src/index.ts

@@ -0,0 +1,22 @@
+import { schedule } from 'node-cron'
+import process from 'process'
+
+import { Config } from './config.js'
+import { logger } from './logger.js'
+import { loop } from './runner.js'
+
+async function main() {
+  const cron = schedule(Config.runner.cron, loop)
+  logger.info('Started service.', { version: Config.version })
+  logger.debug('Config', Config)
+
+  function terminate() {
+    logger.info('Stopping service.')
+    cron.stop()
+    process.exit(0)
+  }
+  process.on('SIGINT', terminate)
+  process.on('SIGTERM', terminate)
+}
+
+main()

src/ip.ts

@@ -0,0 +1,22 @@
+import axios from 'axios'
+
+import { Cache } from './cache.js'
+import { Config } from './config.js'
+
+export async function getCurrentIp(): Promise<string> {
+  const { data } = await axios({
+    url: Config.runner.resolver,
+    method: 'GET',
+  })
+  return data as string
+}
+
+export function checkIfUpdateIsRequired(newIP: string): boolean {
+  // Check if IP has changed.
+  const current = Cache.get('ip')
+  if (newIP !== current) {
+    Cache.set('ip', newIP)
+    return true
+  }
+  return false
+}

src/logger.ts

@@ -0,0 +1,12 @@
+import winston from 'winston'
+
+import { Config } from './config.js'
+
+export const logger = winston.createLogger({
+  level: Config.logging.level,
+  transports: [
+    new winston.transports.Console({
+      format: winston.format.combine(winston.format.timestamp(), winston.format.colorize(), winston.format.simple()),
+    }),
+  ],
+})

src/runner.ts

@@ -0,0 +1,18 @@
+import { update } from './cloudflare.js'
+import { checkIfUpdateIsRequired, getCurrentIp } from './ip.js'
+import { logger } from './logger.js'
+
+export async function loop() {
+  const ip = await getCurrentIp()
+  const changed = checkIfUpdateIsRequired(ip)
+  logger.info(`Running. Update required: ${!!changed}`)
+  if (changed) {
+    try {
+      await update(ip)
+      logger.info('Successfully updated DNS record')
+    } catch (e) {
+      logger.error(e)
+      logger.error('Failed to update DNS record')
+    }
+  }
+}

tsconfig.json

@@ -0,0 +1,12 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "ES2022",
+    "rootDir": "./src",
+    "moduleResolution": "node",
+    "outDir": "./dist",
+    "esModuleInterop": true,
+    "strict": true,
+    "skipLibCheck": true
+  }
+}

yarn.lock

@@ -1,202 +0,0 @@
-# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
-# yarn lockfile v1
-
-
-agent-base@^4.3.0:
-  version "4.3.0"
-  resolved "https://registry.yarnpkg.com/agent-base/-/agent-base-4.3.0.tgz#8165f01c436009bccad0b1d122f05ed770efc6ee"
-  integrity sha512-salcGninV0nPrwpGNn4VTXBb1SOuXQBiqbrNXoeizJsHrsL6ERFM2Ne3JUSBWRE6aeNJI2ROP/WEEIDUiDe3cg==
-  dependencies:
-    es6-promisify "^5.0.0"
-
-autocreate@^1.1.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/autocreate/-/autocreate-1.2.0.tgz#522167992c4172c15479e5f88f3486a452a40cba"
-  integrity sha1-UiFnmSxBcsFUeeX4jzSGpFKkDLo=
-
-axios@^0.21.1:
-  version "0.21.1"
-  resolved "https://registry.yarnpkg.com/axios/-/axios-0.21.1.tgz#22563481962f4d6bde9a76d516ef0e5d3c09b2b8"
-  integrity sha512-dKQiRHxGD9PPRIUNIWvZhPTPpl1rf/OxTYKsqKUDjBwYylTvV7SjSHJb9ratfyzM6wCdLCOYLzs73qpg5c4iGA==
-  dependencies:
-    follow-redirects "^1.10.0"
-
-capture-stack-trace@^1.0.0:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/capture-stack-trace/-/capture-stack-trace-1.0.1.tgz#a6c0bbe1f38f3aa0b92238ecb6ff42c344d4135d"
-  integrity sha512-mYQLZnx5Qt1JgB1WEiMCf2647plpGeQ2NMR/5L0HNZzGQo4fuSPnK+wjfPnKZV0aiJDgzmWqqkV/g7JD+DW0qw==
-
-cloudflare@^2.7.0:
-  version "2.7.0"
-  resolved "https://registry.yarnpkg.com/cloudflare/-/cloudflare-2.7.0.tgz#ff9249a63ff9b662bd863da21e965c8f82f76012"
-  integrity sha512-yhroBpn2VBczFwiRLpyUc431XiWE+xNs8YvtjAsj1vEA1pVwhpje6BzgLW5iZbulmCuPX48lvX8HizeMWk713g==
-  dependencies:
-    autocreate "^1.1.0"
-    es-class "^2.1.1"
-    got "^6.3.0"
-    https-proxy-agent "^2.1.1"
-    object-assign "^4.1.0"
-    should-proxy "^1.0.4"
-    url-pattern "^1.0.3"
-
-create-error-class@^3.0.0:
-  version "3.0.2"
-  resolved "https://registry.yarnpkg.com/create-error-class/-/create-error-class-3.0.2.tgz#06be7abef947a3f14a30fd610671d401bca8b7b6"
-  integrity sha1-Br56vvlHo/FKMP1hBnHUAbyot7Y=
-  dependencies:
-    capture-stack-trace "^1.0.0"
-
-cron@^1.8.2:
-  version "1.8.2"
-  resolved "https://registry.yarnpkg.com/cron/-/cron-1.8.2.tgz#4ac5e3c55ba8c163d84f3407bde94632da8370ce"
-  integrity sha512-Gk2c4y6xKEO8FSAUTklqtfSr7oTq0CiPQeLBG5Fl0qoXpZyMcj1SG59YL+hqq04bu6/IuEA7lMkYDAplQNKkyg==
-  dependencies:
-    moment-timezone "^0.5.x"
-
-debug@^3.1.0:
-  version "3.2.7"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-3.2.7.tgz#72580b7e9145fb39b6676f9c5e5fb100b934179a"
-  integrity sha512-CFjzYYAi4ThfiQvizrFQevTTXHtnCqWfe7x1AhgEscTz6ZbLbfoLRLPugTQyBth6f8ZERVUSyWHFD/7Wu4t1XQ==
-  dependencies:
-    ms "^2.1.1"
-
-dotenv@^8.2.0:
-  version "8.5.1"
-  resolved "https://registry.yarnpkg.com/dotenv/-/dotenv-8.5.1.tgz#e3a4c7862daba51b92bce0da5c349f11faa28663"
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-
-duplexer3@^0.1.4:
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-
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-
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-  integrity sha512-RUbUeKwvm3XG2VYamhJL1xFktgjvPzL0Hq8C+6yrWIswDy3BIXGqCxhxkc30N9jqK311gVU137K8Ei55/zVJRg==
-
-is-stream@^1.0.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/is-stream/-/is-stream-1.1.0.tgz#12d4a3dd4e68e0b79ceb8dbc84173ae80d91ca44"
-  integrity sha1-EtSj3U5o4Lec6428hBc66A2RykQ=
-
-lowercase-keys@^1.0.0:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/lowercase-keys/-/lowercase-keys-1.0.1.tgz#6f9e30b47084d971a7c820ff15a6c5167b74c26f"
-  integrity sha512-G2Lj61tXDnVFFOi8VZds+SoQjtQC3dgokKdDG2mTm1tx4m50NUHBOZSBwQQHyy0V12A0JTG4icfZQH+xPyh8VA==
-
-moment-timezone@^0.5.x:
-  version "0.5.33"
-  resolved "https://registry.yarnpkg.com/moment-timezone/-/moment-timezone-0.5.33.tgz#b252fd6bb57f341c9b59a5ab61a8e51a73bbd22c"
-  integrity sha512-PTc2vcT8K9J5/9rDEPe5czSIKgLoGsH8UNpA4qZTVw0Vd/Uz19geE9abbIOQKaAQFcnQ3v5YEXrbSc5BpshH+w==
-  dependencies:
-    moment ">= 2.9.0"
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-"moment@>= 2.9.0":
-  version "2.29.1"
-  resolved "https://registry.yarnpkg.com/moment/-/moment-2.29.1.tgz#b2be769fa31940be9eeea6469c075e35006fa3d3"
-  integrity sha512-kHmoybcPV8Sqy59DwNDY3Jefr64lK/by/da0ViFcuA4DH0vQg5Q6Ze5VimxkfQNSC+Mls/Kx53s7TjP1RhFEDQ==
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-  version "2.1.3"
-  resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.3.tgz#574c8138ce1d2b5861f0b44579dbadd60c6615b2"
-  integrity sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==
-
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-  version "4.1.1"
-  resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
-  integrity sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=
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-  version "1.0.4"
-  resolved "https://registry.yarnpkg.com/prepend-http/-/prepend-http-1.0.4.tgz#d4f4562b0ce3696e41ac52d0e002e57a635dc6dc"
-  integrity sha1-1PRWKwzjaW5BrFLQ4ALlemNdxtw=
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-  version "5.2.1"
-  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.2.1.tgz#1eaf9fa9bdb1fdd4ec75f58f9cdb4e6b7827eec6"
-  integrity sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==
-
-should-proxy@^1.0.4:
-  version "1.0.4"
-  resolved "https://registry.yarnpkg.com/should-proxy/-/should-proxy-1.0.4.tgz#c805a501abf69539600634809e62fbf238ba35e4"
-  integrity sha1-yAWlAav2lTlgBjSAnmL78ji6NeQ=
-
-timed-out@^4.0.0:
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/timed-out/-/timed-out-4.0.1.tgz#f32eacac5a175bea25d7fab565ab3ed8741ef56f"
-  integrity sha1-8y6srFoXW+ol1/q1Zas+2HQe9W8=
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-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/unzip-response/-/unzip-response-2.0.1.tgz#d2f0f737d16b0615e72a6935ed04214572d56f97"
-  integrity sha1-0vD3N9FrBhXnKmk17QQhRXLVb5c=
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-url-parse-lax@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/url-parse-lax/-/url-parse-lax-1.0.0.tgz#7af8f303645e9bd79a272e7a14ac68bc0609da73"
-  integrity sha1-evjzA2Rem9eaJy56FKxovAYJ2nM=
-  dependencies:
-    prepend-http "^1.0.1"
-
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-  version "1.0.3"
-  resolved "https://registry.yarnpkg.com/url-pattern/-/url-pattern-1.0.3.tgz#0409292471b24f23c50d65a47931793d2b5acfc1"
-  integrity sha1-BAkpJHGyTyPFDWWkeTF5PStaz8E=