feat: add share pages comments and server actions

lib/share/current-author.ts

@@ -0,0 +1,32 @@
+import "server-only";
+
+import { eq } from "drizzle-orm";
+import { getServerSession } from "next-auth";
+import { db } from "@/db";
+import { users } from "@/db/schema";
+import { getSessionDiscordId, type SessionWithDiscord } from "@/lib/auth/auth";
+import { authOptions } from "@/lib/auth/auth-options";
+import { ShareHttpError } from "@/lib/share/http-error";
+
+export async function requireShareAuthor() {
+  const session = await getServerSession(authOptions);
+  const discordId = getSessionDiscordId(session);
+  const userId = (session as SessionWithDiscord | null)?.user?.id;
+  if (!discordId || !userId) {
+    throw new ShareHttpError("Unauthorized", 401);
+  }
+
+  const [user] = await db
+    .select({ id: users.id, name: users.name, image: users.image })
+    .from(users)
+    .where(eq(users.id, userId))
+    .limit(1);
+  if (!user) throw new ShareHttpError("Unauthorized", 401);
+
+  return {
+    userId: user.id,
+    discordId,
+    displayName: user.name || session?.user?.name || "Discord user",
+    avatarUrl: user.image || session?.user?.image || null,
+  };
+}

lib/share/limits.ts

@@ -0,0 +1,4 @@
+export const MAX_SHARE_TEXT_BYTES = 5 * 1024 * 1024;
+export const MAX_SHARE_DESCRIPTION_LENGTH = 5_000;
+export const MAX_SHARE_COMMENT_LENGTH = 2_000;
+export const MAX_SHARE_IMAGE_BYTES = 50 * 1024 * 1024;

lib/share/validation.ts

@@ -1,9 +1,10 @@
 import { validateImageUploadFile } from "@/lib/cdn-images";
 import { ShareHttpError } from "@/lib/share/http-error";
-
-export const MAX_SHARE_TEXT_BYTES = 5 * 1024 * 1024;
-export const MAX_SHARE_DESCRIPTION_LENGTH = 5_000;
-export const MAX_SHARE_COMMENT_LENGTH = 2_000;
+import {
+  MAX_SHARE_COMMENT_LENGTH,
+  MAX_SHARE_DESCRIPTION_LENGTH,
+  MAX_SHARE_TEXT_BYTES,
+} from "@/lib/share/limits";
 
 export type ValidatedImage = {
   bytes: Buffer;