feat: basic admin interface

server/api/admin/instance.get.ts

@@ -0,0 +1,9 @@
+export default defineEventHandler(async (event) => {
+    await protectAdminRoute(event);
+
+    return {
+        registration: await getRegistrationMode(),
+        // set when DISABLE_SIGNUP in the environment overrules the setting
+        registrationLocked: isRegistrationLocked(),
+    };
+});

server/api/admin/instance.put.ts

@@ -0,0 +1,43 @@
+import * as z from 'zod';
+import { INSTANCE_SETTINGS_ID, REGISTRATION_MODES, instanceSettings } from '~~/drizzle/schema';
+import { db } from '~~/server/lib/db';
+
+export default defineEventHandler(async (event) => {
+    await protectAdminRoute(event);
+
+    const result = await readValidatedBody(event, (body) =>
+        z
+            .object({
+                registration: z.enum(REGISTRATION_MODES),
+            })
+            .safeParse(body),
+    );
+
+    if (!result.success) {
+        throw createError({
+            statusCode: 400,
+            message: result.error.issues[0]!.message,
+        });
+    }
+
+    if (isRegistrationLocked()) {
+        throw createError({
+            statusCode: 409,
+            statusMessage: 'Registration is locked by the environment',
+            data: {
+                code: 'REGISTRATION_LOCKED',
+            },
+        });
+    }
+
+    const { registration } = result.data;
+
+    await db.insert(instanceSettings)
+        .values({ id: INSTANCE_SETTINGS_ID, registration })
+        .onConflictDoUpdate({
+            target: instanceSettings.id,
+            set: { registration, updatedAt: new Date() },
+        });
+
+    return { registration, registrationLocked: false };
+});

server/api/admin/users/[id]/index.delete.ts

@@ -0,0 +1,40 @@
+import { db } from '~~/server/lib/db';
+
+/**
+ * Deletes someone else's account and everything that belongs to it.
+ *
+ * Admins delete their own account from their profile, where it asks for the
+ * password and keeps the last admin from leaving.
+ */
+export default defineEventHandler(async (event) => {
+    await protectAdminRoute(event);
+
+    const id = getRouterParam(event, 'id')!;
+
+    if (id === event.context.user!.id) {
+        throw createError({
+            statusCode: 400,
+            statusMessage: 'You cannot delete your own account here',
+            data: {
+                code: 'CANNOT_DELETE_YOURSELF',
+            },
+        });
+    }
+
+    const account = await db.query.users.findFirst({
+        where: {
+            id,
+        },
+    });
+
+    if (!account) {
+        throw createError({
+            statusCode: 404,
+            statusMessage: 'User not found',
+        });
+    }
+
+    await deleteAccount(id);
+
+    return { ok: true };
+});

server/api/admin/users/[id]/two-factor.delete.ts

@@ -0,0 +1,34 @@
+import { eq } from 'drizzle-orm';
+import { twoFactors, users } from '~~/drizzle/schema';
+import { db } from '~~/server/lib/db';
+
+/**
+ * Turns two-factor sign-in off for a user who lost their authenticator app
+ * and backup codes. They sign in with just their password again and can set
+ * it up from scratch.
+ */
+export default defineEventHandler(async (event) => {
+    await protectAdminRoute(event);
+
+    const id = getRouterParam(event, 'id')!;
+
+    const account = await db.query.users.findFirst({
+        where: {
+            id,
+        },
+    });
+
+    if (!account) {
+        throw createError({
+            statusCode: 404,
+            statusMessage: 'User not found',
+        });
+    }
+
+    await db.transaction(async (tx) => {
+        await tx.delete(twoFactors).where(eq(twoFactors.userId, id));
+        await tx.update(users).set({ twoFactorEnabled: false }).where(eq(users.id, id));
+    });
+
+    return { ok: true };
+});

server/api/admin/users/index.get.ts

@@ -0,0 +1,39 @@
+import { asc, eq, max } from 'drizzle-orm';
+import { sessions, users } from '~~/drizzle/schema';
+import { db } from '~~/server/lib/db';
+
+/**
+ * Every account of the instance, for the admin user list.
+ *
+ * Only what is needed to manage accounts is returned. Chats, agents, files and
+ * API keys of other users are never part of this.
+ */
+export default defineEventHandler(async (event) => {
+    await protectAdminRoute(event);
+
+    const rows = await db
+        .select({
+            id: users.id,
+            name: users.name,
+            email: users.email,
+            image: users.image,
+            role: users.role,
+            banned: users.banned,
+            twoFactorEnabled: users.twoFactorEnabled,
+            createdAt: users.createdAt,
+            // sessions are touched as they are used, the newest one is the
+            // closest thing there is to a last seen time
+            lastActiveAt: max(sessions.updatedAt),
+        })
+        .from(users)
+        .leftJoin(sessions, eq(sessions.userId, users.id))
+        .groupBy(users.id)
+        .orderBy(asc(users.createdAt));
+
+    return rows.map((row) => ({
+        ...row,
+        role: row.role === 'admin' ? 'admin' as const : 'user' as const,
+        banned: !!row.banned,
+        twoFactorEnabled: !!row.twoFactorEnabled,
+    }));
+});