feat: add authentication

lib/string.ts

@@ -13,6 +13,8 @@ export function safeFileName(inputString: string): string {
   // Remove characters that are not safe for file names
   fileName = fileName.replace(/[^\w.-]/g, "");
 
+  fileName = fileName.replaceAll(":", "");
+
   return fileName;
 }
 
@@ -34,7 +36,9 @@ export function extractHashTags(inputString: string) {
 export const isYoutubeLink = (link: string) => {
   try {
     const url = new URL(link);
-    return ["youtu.be", "youtube.com","www.youtube.com" ].includes(url.hostname);
+    return ["youtu.be", "youtube.com", "www.youtube.com"].includes(
+      url.hostname,
+    );
   } catch (_err) {
     return false;
   }
@@ -52,3 +56,39 @@ export function extractYoutubeId(link: string) {
 
   return url.pathname.replace(/^\//, "");
 }
+
+export async function hash(message: string) {
+  const data = new TextEncoder().encode(message);
+  const hashBuffer = await crypto.subtle.digest("SHA-256", data);
+  const hashArray = Array.from(new Uint8Array(hashBuffer));
+  const hashHex = hashArray.map((b) => b.toString(16).padStart(2, "0")).join(
+    "",
+  );
+  return hashHex;
+}
+// Helper function to calculate SHA-256 hash
+export async function sha256(input: string) {
+  const encoder = new TextEncoder();
+  const data = encoder.encode(input);
+  const hashBuffer = await crypto.subtle.digest("SHA-256", data);
+  return base64urlencode(new Uint8Array(hashBuffer));
+}
+
+// Helper function to encode a byte array as a URL-safe base64 string
+function base64urlencode(data: Uint8Array) {
+  const base64 = btoa(String.fromCharCode(...data));
+  return base64.replace(/\+/g, "-").replace(/\//g, "_").replace(/=+$/, "");
+}
+export function getCookie(name: string): string | null {
+  if (typeof document === "undefined") return null;
+  const nameLenPlus = name.length + 1;
+  return document.cookie
+    .split(";")
+    .map((c) => c.trim())
+    .filter((cookie) => {
+      return cookie.substring(0, nameLenPlus) === `${name}=`;
+    })
+    .map((cookie) => {
+      return decodeURIComponent(cookie.substring(nameLenPlus));
+    })[0] || null;
+}