feat: Implement core API endpoints, database schema, ActivityPub federation, and initial user interface for the application.

src/app/.well-known/nodeinfo/route.ts

@@ -0,0 +1,16 @@
+import { NextResponse } from 'next/server';
+
+export async function GET() {
+    const nodeDomain = process.env.NEXT_PUBLIC_NODE_DOMAIN || 'localhost:3000';
+    const nodeName = process.env.NEXT_PUBLIC_NODE_NAME || 'Synapsis Node';
+    const nodeDescription = process.env.NEXT_PUBLIC_NODE_DESCRIPTION || 'A Synapsis federated social network node';
+
+    return NextResponse.json({
+        links: [
+            {
+                rel: 'http://nodeinfo.diaspora.software/ns/schema/2.1',
+                href: `https://${nodeDomain}/nodeinfo/2.1`,
+            },
+        ],
+    });
+}

src/app/.well-known/synapsis-handles/route.ts

@@ -0,0 +1,56 @@
+import { NextResponse } from 'next/server';
+import { db, handleRegistry } from '@/db';
+import { desc, eq, gt } from 'drizzle-orm';
+import { normalizeHandle } from '@/lib/federation/handles';
+
+export async function GET(request: Request) {
+    try {
+        if (!db) {
+            return NextResponse.json({ handles: [] });
+        }
+
+        const { searchParams } = new URL(request.url);
+        const handleParam = searchParams.get('handle');
+        const sinceParam = searchParams.get('since');
+        const limit = Math.min(parseInt(searchParams.get('limit') || '100'), 500);
+
+        if (handleParam) {
+            const cleanHandle = normalizeHandle(handleParam);
+            const entry = await db.query.handleRegistry.findFirst({
+                where: eq(handleRegistry.handle, cleanHandle),
+            });
+
+            if (!entry) {
+                return NextResponse.json({ handles: [] });
+            }
+
+            return NextResponse.json({
+                handles: [{
+                    handle: entry.handle,
+                    did: entry.did,
+                    nodeDomain: entry.nodeDomain,
+                    updatedAt: entry.updatedAt,
+                }],
+            });
+        }
+
+        const sinceDate = sinceParam ? new Date(sinceParam) : null;
+        const entries = await db.query.handleRegistry.findMany({
+            where: sinceDate ? gt(handleRegistry.updatedAt, sinceDate) : undefined,
+            orderBy: [desc(handleRegistry.updatedAt)],
+            limit,
+        });
+
+        return NextResponse.json({
+            handles: entries.map((entry) => ({
+                handle: entry.handle,
+                did: entry.did,
+                nodeDomain: entry.nodeDomain,
+                updatedAt: entry.updatedAt,
+            })),
+        });
+    } catch (error) {
+        console.error('Handle export error:', error);
+        return NextResponse.json({ error: 'Failed to export handles' }, { status: 500 });
+    }
+}

src/app/.well-known/webfinger/route.ts

@@ -0,0 +1,56 @@
+import { NextResponse } from 'next/server';
+import { db, users } from '@/db';
+import { eq } from 'drizzle-orm';
+import { generateWebFingerResponse, parseWebFingerResource } from '@/lib/activitypub/webfinger';
+
+export async function GET(request: Request) {
+    const { searchParams } = new URL(request.url);
+    const resource = searchParams.get('resource');
+
+    if (!resource) {
+        return NextResponse.json(
+            { error: 'Missing resource parameter' },
+            { status: 400 }
+        );
+    }
+
+    const parsed = parseWebFingerResource(resource);
+
+    if (!parsed) {
+        return NextResponse.json(
+            { error: 'Invalid resource format' },
+            { status: 400 }
+        );
+    }
+
+    const nodeDomain = process.env.NEXT_PUBLIC_NODE_DOMAIN || 'localhost:3000';
+
+    // Check if this is our domain
+    if (parsed.domain !== nodeDomain && parsed.domain !== nodeDomain.replace(/:\d+$/, '')) {
+        return NextResponse.json(
+            { error: 'Resource not found' },
+            { status: 404 }
+        );
+    }
+
+    // Find the user
+    const user = await db.query.users.findFirst({
+        where: eq(users.handle, parsed.handle.toLowerCase()),
+    });
+
+    if (!user) {
+        return NextResponse.json(
+            { error: 'User not found' },
+            { status: 404 }
+        );
+    }
+
+    const response = generateWebFingerResponse(user.handle, nodeDomain);
+
+    return NextResponse.json(response, {
+        headers: {
+            'Content-Type': 'application/jrd+json',
+            'Access-Control-Allow-Origin': '*',
+        },
+    });
+}