feat: cloudflare provider (#359)

Co-authored-by: pooya parsa <pyapar@gmail.com>

docs/content/en/4.providers/cloudflare.md

@@ -0,0 +1,38 @@
+---
+title: Cloudflare Provider
+description: 'Nuxt Image has first class integration with Cloudflare'
+navigation:
+  title: Cloudflare
+---
+
+Integration between [Cloudflare](https://developers.cloudflare.com/images/) and the image module.
+
+:::alert{type="info"}
+Availability only for Business and Enterprise Customers. Normally Cloudflare [pages](https://pages.cloudflare.com/) users can already benefit from build-time image optimization.
+:::
+
+To use this provider you just need to specify the base url (zone) of your service:
+
+```js{}[nuxt.config.js]
+export default {
+  image: {
+    baseURL: 'https://that-test.site'
+  }
+}
+```
+
+**Example:**
+
+```vue
+<nuxt-img provider="cloudflare" src="/burger.jpeg" height="300" :modifiers="{ fit: 'contain' }" />
+```
+
+## Options
+
+### `baseURL`
+
+Default: `/`
+
+Your deployment's domain (zone).
+
+**Note:** `/cdn-cgi/image/` will be automatically appended for generating URLs.

playground/nuxt.config.ts

@@ -32,6 +32,9 @@ export default <NuxtConfig> {
     storyblok: {
       baseURL: 'https://a.storyblok.com/'
     },
+    cloudflare: {
+      baseURL: 'https://that-test.site'
+    },
     cloudinary: {
       baseURL: 'https://res.cloudinary.com/nuxt/image/upload/'
     },

playground/providers.ts

@@ -45,6 +45,17 @@ export const providers: Provider[] = [
       }
     ]
   },
+  // Cloudflare
+  {
+    name: 'cloudflare',
+    samples: [
+      {
+        src: 'https://s3.that-test.site/burger.jpeg',
+        height: 300,
+        fit: 'contain'
+      }
+    ]
+  },
   // Cloudinary
   {
     name: 'cloudinary',

src/provider.ts

@@ -5,6 +5,7 @@ import type { ModuleOptions, InputProvider, ImageModuleProvider, ProviderSetup }
 import { ipxSetup } from './ipx'
 
 const BuiltInProviders = [
+  'cloudflare',
   'cloudinary',
   'contentful',
   'cloudimage',

src/runtime/providers/cloudflare.ts

@@ -0,0 +1,49 @@
+import { joinURL, encodeQueryItem } from 'ufo'
+import { ProviderGetImage } from 'src'
+import { createOperationsGenerator } from '~image'
+
+const operationsGenerator = createOperationsGenerator({
+  keyMap: {
+    width: 'w',
+    height: 'h',
+    dpr: 'dpr',
+    fit: 'fit',
+    gravity: 'g',
+    quality: 'q',
+    format: 'f',
+    sharpen: 'sharpen'
+  },
+  valueMap: {
+    fit: {
+      cover: 'cover',
+      contain: 'contain',
+      fill: 'scale-down',
+      outside: 'crop',
+      inside: 'pad'
+    },
+    gravity: {
+      auto: 'auto',
+      side: 'side'
+    }
+  },
+  joinWith: ',',
+  formatter: (key, val) => encodeQueryItem(key, val)
+})
+
+const defaultModifiers = {}
+
+// https://developers.cloudflare.com/images/image-resizing/url-format/
+export const getImage: ProviderGetImage = (src, {
+  modifiers = {},
+  baseURL = '/'
+} = {}) => {
+  const mergeModifiers = { ...defaultModifiers, ...modifiers }
+  const operations = operationsGenerator(mergeModifiers as any)
+
+  // https://<ZONE>/cdn-cgi/image/<OPTIONS>/<SOURCE-IMAGE>
+  const url = operations ? joinURL(baseURL, 'cdn-cgi/image', operations, src) : joinURL(baseURL, src)
+
+  return {
+    url
+  }
+}

src/types/module.ts

@@ -40,6 +40,7 @@ export interface CloudinaryOptions {
 }
 
 export interface ImageProviders {
+  cloudflare?: any
   cloudinary?: Partial<CloudinaryOptions>
   contentful?: any
   cloudimage?: any

test/providers.ts

@@ -2,6 +2,7 @@ export const images = [
   {
     args: ['/test.png', {}],
     ipx: { url: '/_ipx/_/test.png' },
+    cloudflare: { url: '/test.png' },
     cloudinary: { url: '/f_auto,q_auto/test' },
     twicpics: { url: '/test.png' },
     fastly: { url: '/test.png' },
@@ -20,6 +21,7 @@ export const images = [
   {
     args: ['/test.png', { width: 200 }],
     ipx: { url: '/_ipx/w_200/test.png' },
+    cloudflare: { url: '/cdn-cgi/image/w=200/test.png' },
     cloudinary: { url: '/f_auto,q_auto,w_200/test' },
     twicpics: { url: '/test.png?twic=v1/cover=200x-' },
     fastly: { url: '/test.png?width=200' },
@@ -38,6 +40,7 @@ export const images = [
   {
     args: ['/test.png', { height: 200 }],
     ipx: { url: '/_ipx/h_200/test.png' },
+    cloudflare: { url: '/cdn-cgi/image/h=200/test.png' },
     cloudinary: { url: '/f_auto,q_auto,h_200/test' },
     twicpics: { url: '/test.png?twic=v1/cover=-x200' },
     fastly: { url: '/test.png?height=200' },
@@ -56,6 +59,7 @@ export const images = [
   {
     args: ['/test.png', { width: 200, height: 200 }],
     ipx: { url: '/_ipx/s_200x200/test.png' },
+    cloudflare: { url: '/cdn-cgi/image/w=200,h=200/test.png' },
     cloudinary: { url: '/f_auto,q_auto,w_200,h_200/test' },
     twicpics: { url: '/test.png?twic=v1/cover=200x200' },
     fastly: { url: '/test.png?width=200&height=200' },
@@ -74,6 +78,7 @@ export const images = [
   {
     args: ['/test.png', { width: 200, height: 200, fit: 'contain' }],
     ipx: { url: '/_ipx/fit_contain,s_200x200/test.png' },
+    cloudflare: { url: '/cdn-cgi/image/w=200,h=200,fit=contain/test.png' },
     cloudinary: { url: '/f_auto,q_auto,w_200,h_200,c_scale/test' },
     twicpics: { url: '/test.png?twic=v1/inside=200x200' },
     fastly: { url: '/test.png?width=200&height=200&fit=bounds' },
@@ -92,6 +97,7 @@ export const images = [
   {
     args: ['/test.png', { width: 200, height: 200, fit: 'contain', format: 'jpeg' }],
     ipx: { url: '/_ipx/fit_contain,f_jpeg,s_200x200/test.png' },
+    cloudflare: { url: '/cdn-cgi/image/w=200,h=200,fit=contain,f=jpeg/test.png' },
     cloudinary: { url: '/f_jpg,q_auto,w_200,h_200,c_scale/test' },
     twicpics: { url: '/test.png?twic=v1/output=jpeg/inside=200x200' },
     fastly: { url: '/test.png?width=200&height=200&fit=bounds&format=jpeg' },

test/unit/providers.test.ts

@@ -2,6 +2,7 @@ import { images } from '../providers'
 
 import { cleanDoubleSlashes } from '~/runtime/utils'
 import * as ipx from '~/runtime/providers/ipx'
+import * as cloudflare from '~/runtime/providers/cloudflare'
 import * as cloudinary from '~/runtime/providers/cloudinary'
 import * as twicpics from '~/runtime/providers/twicpics'
 import * as fastly from '~/runtime/providers/fastly'
@@ -42,6 +43,17 @@ describe('Providers', () => {
     })
   })
 
+  test('cloudflare', () => {
+    const providerOptions = {
+      baseURL: '/'
+    }
+    for (const image of images) {
+      const [src, modifiers] = image.args
+      const generated = cloudflare.getImage(src, { modifiers, ...providerOptions }, emptyContext)
+      expect(generated).toMatchObject(image.cloudflare)
+    }
+  })
+
   test('cloudinary', () => {
     const providerOptions = {
       baseURL: '/'