From f966e0564ee2d179dfaa8db3f8a273f7be8d6ab9 Mon Sep 17 00:00:00 2001
From: buzz-lightsnack-2007
 <73412182+buzz-lightsnack-2007@users.noreply.github.com>
Date: Sun, 6 Apr 2025 14:09:48 +0800
Subject: [PATCH] reuse errors.JS and hash.JS

from https://codeberg.org/buzzcode2007/FCC-Project-URLShortener/src/branch/main/scripts/utilities
---
 scripts/utilities/errors.JS | 25 ++++++++++++++++++++++++
 scripts/utilities/hash.JS   | 38 +++++++++++++++++++++++++++++++++++++
 2 files changed, 63 insertions(+)
 create mode 100644 scripts/utilities/errors.JS
 create mode 100644 scripts/utilities/hash.JS

diff --git a/scripts/utilities/errors.JS b/scripts/utilities/errors.JS
new file mode 100644
index 0000000..a18275e
--- /dev/null
+++ b/scripts/utilities/errors.JS
@@ -0,0 +1,25 @@
+class CustomErrors {}
+
+CustomErrors.URL = class URL_Error extends Error {
+    constructor(message, URL) {
+        super((message) ? message : `invalid url`);
+        this.name = "URL Problem";
+        this.stack = URL;
+    };
+}
+
+CustomErrors.DBProblem = class DB_Error extends Error {
+    constructor(message) {
+        super(message);
+        this.name = "Database Problem"
+    }
+}
+
+CustomErrors.HashProblem = class DB_Error extends Error {
+    constructor(message) {
+        super(message);
+        this.name = "Hash Problem"
+    }
+}
+
+module.exports = CustomErrors
\ No newline at end of file
diff --git a/scripts/utilities/hash.JS b/scripts/utilities/hash.JS
new file mode 100644
index 0000000..db025cb
--- /dev/null
+++ b/scripts/utilities/hash.JS
@@ -0,0 +1,38 @@
+class Hash {
+     #data;
+
+     constructor(DATA, METHOD) {
+          this.#data = DATA;
+          this.algorithm = (METHOD) ? METHOD : "SHA-512";
+          this.arrayBuffer = crypto.subtle.digest(this.algorithm, (new TextEncoder()).encode(DATA))
+     };
+
+     /* 
+     Represent the hash in another format. 
+
+     @param {string} TYPE the output format
+     @return {object} the converted hash
+     */
+     async convert(TYPE) {
+          if (TYPE) {
+               switch (TYPE) {
+                    case `Uint8Array`:
+                         this[TYPE] = new Uint8Array(await this.arrayBuffer);
+                         break;
+                    case `Array`: 
+                         this[TYPE] = Array.from(new Uint8Array(await this.arrayBuffer));
+                         break;
+                    case `Number`: 
+                         this[TYPE] = parseInt((Array.from(new Uint8Array(await this.arrayBuffer))).join());
+                         break;
+                    case `String`: 
+                         this[TYPE] = Array.from(new Uint8Array(await this.arrayBuffer)).join(``);
+               };
+     
+               return(this[TYPE])
+          }
+     }
+}
+
+
+module.exports = Hash;
\ No newline at end of file