From 422b6eb05a2fb5e7eec816a6bd2d37b53e4a6bdc Mon Sep 17 00:00:00 2001
From: Corentin THOMASSET <corentin.thomasset74@gmail.com>
Date: Wed, 3 Aug 2022 17:16:03 +0200
Subject: [PATCH] feat(hash-text): digest base selector (#254)

---
 src/tools/hash-text/hash-text.service.test.ts | 15 ++++++
 src/tools/hash-text/hash-text.service.ts      |  7 +++
 src/tools/hash-text/hash-text.vue             | 47 ++++++++++++++++---
 3 files changed, 62 insertions(+), 7 deletions(-)
 create mode 100644 src/tools/hash-text/hash-text.service.test.ts
 create mode 100644 src/tools/hash-text/hash-text.service.ts

diff --git a/src/tools/hash-text/hash-text.service.test.ts b/src/tools/hash-text/hash-text.service.test.ts
new file mode 100644
index 00000000..b0e9c797
--- /dev/null
+++ b/src/tools/hash-text/hash-text.service.test.ts
@@ -0,0 +1,15 @@
+import { describe, expect, it } from 'vitest';
+import { convertHexToBin } from './hash-text.service';
+
+describe('hash text', () => {
+  describe('convertHexToBin', () => {
+    it('convert hex to bin', () => {
+      expect(convertHexToBin('')).toEqual('');
+      expect(convertHexToBin('FF')).toEqual('11111111');
+      expect(convertHexToBin('F'.repeat(200))).toEqual('1111'.repeat(200));
+      expect(convertHexToBin('2123006AD00F694CE120')).toEqual(
+        '00100001001000110000000001101010110100000000111101101001010011001110000100100000',
+      );
+    });
+  });
+});
diff --git a/src/tools/hash-text/hash-text.service.ts b/src/tools/hash-text/hash-text.service.ts
new file mode 100644
index 00000000..f1241d1d
--- /dev/null
+++ b/src/tools/hash-text/hash-text.service.ts
@@ -0,0 +1,7 @@
+export function convertHexToBin(hex: string) {
+  return hex
+    .trim()
+    .split('')
+    .map((byte) => parseInt(byte, 16).toString(2).padStart(4, '0'))
+    .join('');
+}
diff --git a/src/tools/hash-text/hash-text.vue b/src/tools/hash-text/hash-text.vue
index 9d9332fb..4b7bcf19 100644
--- a/src/tools/hash-text/hash-text.vue
+++ b/src/tools/hash-text/hash-text.vue
@@ -1,10 +1,34 @@
 <template>
   <div>
     <n-card>
-      <n-input v-model:value="clearText" type="textarea" placeholder="Your string..." :autosize="{ minRows: 3 }" />
+      <n-input v-model:value="clearText" type="textarea" placeholder="Your string to hash..." rows="3" />
 
       <n-divider />
 
+      <n-form-item label="Digest encoding">
+        <n-select
+          v-model:value="encoding"
+          :options="[
+            {
+              label: 'Binary (base 2)',
+              value: 'Bin',
+            },
+            {
+              label: 'Hexadecimal (base 16)',
+              value: 'Hex',
+            },
+            {
+              label: 'Base64 (base 64)',
+              value: 'Base64',
+            },
+            {
+              label: 'Base64url (base 64 with url safe chars)',
+              value: 'Base64url',
+            },
+          ]"
+        />
+      </n-form-item>
+
       <div v-for="algo in algoNames" :key="algo" style="margin: 5px 0">
         <n-input-group>
           <n-input-group-label style="flex: 0 0 120px"> {{ algo }} </n-input-group-label>
@@ -16,9 +40,10 @@
 </template>
 
 <script setup lang="ts">
-import InputCopyable from '../../components/InputCopyable.vue';
+import { enc, lib, MD5, RIPEMD160, SHA1, SHA224, SHA256, SHA3, SHA384, SHA512 } from 'crypto-js';
 import { ref } from 'vue';
-import { MD5, SHA1, SHA256, SHA224, SHA512, SHA384, SHA3, RIPEMD160 } from 'crypto-js';
+import InputCopyable from '../../components/InputCopyable.vue';
+import { convertHexToBin } from './hash-text.service';
 
 const algos = {
   MD5,
@@ -32,10 +57,18 @@ const algos = {
 } as const;
 
 type AlgoNames = keyof typeof algos;
+type Encoding = keyof typeof enc | 'Bin';
 const algoNames = Object.keys(algos) as AlgoNames[];
+const encoding = ref<Encoding>('Hex');
+const clearText = ref('');
 
-const clearText = ref(
-  'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Lacus metus blandit dolor lacus natoque ad fusce aliquam velit.',
-);
-const hashText = (algo: AlgoNames, value: string) => algos[algo](value).toString();
+function formatWithEncoding(words: lib.WordArray, encoding: Encoding) {
+  if (encoding === 'Bin') {
+    return convertHexToBin(words.toString(enc.Hex));
+  }
+
+  return words.toString(enc[encoding]);
+}
+
+const hashText = (algo: AlgoNames, value: string) => formatWithEncoding(algos[algo](value), encoding.value);
 </script>