Merge pull request #3 from fumeapp/add-hash-utils

✨ move our hash utils to the module

src/module.ts

@@ -1,4 +1,4 @@
-import { defineNuxtModule, createResolver, addServerImportsDir } from '@nuxt/kit'
+import { defineNuxtModule, createResolver, addImports, addServerImportsDir } from '@nuxt/kit'
 
 // Module options TypeScript interface definition
 export interface ModuleOptions {
@@ -15,6 +15,12 @@ export default defineNuxtModule<ModuleOptions>({
     const resolver = createResolver(import.meta.url)
     nuxt.options.alias['#api-utils'] = resolver.resolve('./runtime/types/index.d.ts')
 
+    const composables = [
+      { name: 'useApiFetch', from: resolver.resolve('./runtime/app/composables/apiFetch') },
+    ]
+
+    addImports(composables)
+
     addServerImportsDir(resolver.resolve('./runtime/server/utils'))
   },
 })

src/runtime/app/composables/apiFetch.ts

@@ -0,0 +1 @@
+export const useApiFetch = $fetch.create({})

src/runtime/server/utils/authorize.ts

@@ -1,3 +1,5 @@
+import { createError } from 'h3'
+
 type PolicyFunction<T extends object> = (args: T) => boolean | Promise<boolean>
 
 export async function authorize<T extends object>(

src/runtime/server/utils/hash.ts

@@ -0,0 +1,56 @@
+import { randomBytes } from 'node:crypto'
+
+/**
+ * Generate a unique hash from a string
+ * @param payload - The string to hash
+ */
+export async function hashFromPayload(payload: string): Promise<string> {
+  const encoder = new TextEncoder()
+  const data = encoder.encode(payload)
+  const hashBuffer = await crypto.subtle.digest('SHA-256', data)
+  const hashArray = Array.from(new Uint8Array(hashBuffer))
+  return hashArray.map(b => b.toString(16).padStart(2, '0')).join('')
+}
+
+/**
+ * Generate a unique hash from a file
+ * @param file
+ */
+export async function hashFromFile(file: File) {
+  return await crypto.subtle
+    .digest('SHA-256', await file.arrayBuffer())
+    .then(buf => Array.from(new Uint8Array(buf)).map(b => b.toString(16).padStart(2, '0')).join(''))
+}
+
+/**
+ * Generates a hash from the content of a URL
+ * Returns the hash and the file a Blob
+ * @param url
+ */
+
+export async function hashFromUrl(url: string): Promise<{ imageHash: string, imageFile: File }> {
+  const response = await fetch(url)
+  const imageBlob = await response.blob()
+  const imageFile = new File([imageBlob], 'avatar', { type: imageBlob.type })
+  const imageHash = await hashFromFile(imageFile)
+  return { imageHash, imageFile }
+}
+
+/**
+ * Generates a random hash from a set of characters
+ * @param length The length of the hash
+ * @param lower Whether to use only lowercase characters
+ */
+export function hashGenerate(length: number = 32, lower = false): string {
+  const charsetAll = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'
+  const charsetLower = 'abcdefghijklmnopqrstuvwxyz0123456789'
+  const charset = lower ? charsetLower : charsetAll
+  const bytes = randomBytes(length)
+  let result = ''
+
+  for (let i = 0; i < length; i++) {
+    result += charset[bytes[i] % charset.length]
+  }
+
+  return result
+}