5 files changed, 153 insertions, 0 deletions
diff --git a/apps/web/lib/constants.ts b/apps/web/lib/constants.ts
new file mode 100644
index 00000000..7a9485cf
--- /dev/null
+++ b/apps/web/lib/constants.ts
@@ -0,0 +1,43 @@
+export const LIMITS = {
+  page: 100,
+  tweet: 1000,
+  note: 1000,
+};
+
+export const codeLanguageSubset = [
+  "python",
+  "javascript",
+  "java",
+  "go",
+  "bash",
+  "c",
+  "cpp",
+  "csharp",
+  "css",
+  "diff",
+  "graphql",
+  "json",
+  "kotlin",
+  "less",
+  "lua",
+  "makefile",
+  "markdown",
+  "objectivec",
+  "perl",
+  "php",
+  "php-template",
+  "plaintext",
+  "python-repl",
+  "r",
+  "ruby",
+  "rust",
+  "scss",
+  "shell",
+  "sql",
+  "swift",
+  "typescript",
+  "vbnet",
+  "wasm",
+  "xml",
+  "yaml",
+];
diff --git a/apps/web/lib/get-metadata.ts b/apps/web/lib/get-metadata.ts
new file mode 100644
index 00000000..4609e49b
--- /dev/null
+++ b/apps/web/lib/get-metadata.ts
@@ -0,0 +1,40 @@
+"use server";
+import * as cheerio from "cheerio";
+
+// TODO: THIS SHOULD PROBABLY ALSO FETCH THE OG-IMAGE
+export async function getMetaData(url: string) {
+  const response = await fetch(url);
+  const html = await response.text();
+
+  const $ = cheerio.load(html);
+
+  // Extract the base URL
+  const baseUrl = new URL(url).origin;
+
+  // Extract title
+  const title = $("title").text().trim();
+
+  const description = $("meta[name=description]").attr("content") ?? "";
+
+  const _favicon =
+    $("link[rel=icon]").attr("href") ?? "https://supermemory.dhr.wtf/web.svg";
+
+  let favicon =
+    _favicon.trim().length > 0
+      ? _favicon.trim()
+      : "https://supermemory.dhr.wtf/web.svg";
+  if (favicon.startsWith("/")) {
+    favicon = baseUrl + favicon;
+  } else if (favicon.startsWith("./")) {
+    favicon = baseUrl + favicon.slice(1);
+  }
+
+  // Prepare the metadata object
+  const metadata = {
+    title,
+    description,
+    image: favicon,
+    baseUrl,
+  };
+  return metadata;
+}
diff --git a/apps/web/lib/get-theme-button.tsx b/apps/web/lib/get-theme-button.tsx
new file mode 100644
index 00000000..020cc976
--- /dev/null
+++ b/apps/web/lib/get-theme-button.tsx
@@ -0,0 +1,11 @@
+// Theming that works perfectly with app router (no flicker, jumps etc!)
+
+import dynamic from "next/dynamic";
+
+// Don't SSR the toggle since the value on the server will be different than the client
+export const getThemeToggler = () =>
+  dynamic(() => import("@repo/ui/shadcn/theme-toggle"), {
+    ssr: false,
+    // Make sure to code a placeholder so the UI doesn't jump when the component loads
+    loading: () => <div className="w-6 h-6" />,
+  });
diff --git a/apps/web/lib/handle-errors.ts b/apps/web/lib/handle-errors.ts
new file mode 100644
index 00000000..42cae589
--- /dev/null
+++ b/apps/web/lib/handle-errors.ts
@@ -0,0 +1,25 @@
+import { isRedirectError } from "next/dist/client/components/redirect";
+import { toast } from "sonner";
+import { z } from "zod";
+
+export function getErrorMessage(err: unknown) {
+  const unknownError = "Something went wrong, please try again later.";
+
+  if (err instanceof z.ZodError) {
+    const errors = err.issues.map((issue) => {
+      return issue.message;
+    });
+    return errors.join("\n");
+  } else if (err instanceof Error) {
+    return err.message;
+  } else if (isRedirectError(err)) {
+    throw err;
+  } else {
+    return unknownError;
+  }
+}
+
+export function showErrorToast(err: unknown) {
+  const errorMessage = getErrorMessage(err);
+  return toast.error(errorMessage);
+}
diff --git a/apps/web/lib/searchParams.ts b/apps/web/lib/searchParams.ts
new file mode 100644
index 00000000..6db718c2
--- /dev/null
+++ b/apps/web/lib/searchParams.ts
@@ -0,0 +1,34 @@
+import {
+  createSearchParamsCache,
+  parseAsInteger,
+  parseAsString,
+  parseAsBoolean,
+  parseAsArrayOf,
+  parseAsJson,
+} from "nuqs/server";
+import { z } from "zod";
+
+export const homeSearchParamsCache = createSearchParamsCache({
+  firstTime: parseAsBoolean.withDefault(false),
+});
+
+export const chatSearchParamsCache = createSearchParamsCache({
+  firstTime: parseAsBoolean.withDefault(false),
+  q: parseAsString.withDefault(""),
+  spaces: parseAsArrayOf(
+    parseAsJson((c) => {
+      const valid = z
+        .object({
+          id: z.string(),
+          name: z.string(),
+        })
+        .safeParse(c);
+
+      if (!valid.success) {
+        return null;
+      }
+
+      return valid.data;
+    }),
+  ).withDefault([]),
+});