Fix UNIQUE constraint: Use (service_name, version, username) instead of service_fqn

- Change UNIQUE constraint to composite key on separate columns
- Move upsert logic into D1Storage.createService() for atomic operation
- Delete existing service and its offers before inserting new one
- Remove redundant delete logic from app.ts endpoint
- Fixes 'UNIQUE constraint failed: services.service_fqn' error when republishing

migrations/fresh_schema.sql

@@ -68,7 +68,7 @@ CREATE TABLE services (
   created_at INTEGER NOT NULL,
   expires_at INTEGER NOT NULL,
   FOREIGN KEY (username) REFERENCES usernames(username) ON DELETE CASCADE,
-  UNIQUE(service_fqn)
+  UNIQUE(service_name, version, username)
 );
 
 CREATE INDEX idx_services_fqn ON services(service_fqn);

src/app.ts

@@ -337,11 +337,7 @@ export function createApp(storage: Storage, config: Config) {
         return c.json({ error: 'Invalid signature for username' }, 403);
       }
 
-      // Delete existing service if one exists (upsert behavior)
+      // Note: createService handles upsert behavior (deletes existing service if it exists)
-      const existingService = await storage.getServiceByFqn(serviceFqn);
-      if (existingService) {
-        await storage.deleteService(existingService.id, username);
-      }
 
       // Validate all offers
       for (const offer of offers) {

src/storage/d1.ts

@@ -399,7 +399,26 @@ export class D1Storage implements Storage {
 
     const { serviceName, version, username } = parsed;
 
-    // Insert service with extracted fields
+    // Delete existing service with same (service_name, version, username) and its related offers (upsert behavior)
+    // First get the existing service
+    const existingService = await this.db.prepare(`
+      SELECT id FROM services
+      WHERE service_name = ? AND version = ? AND username = ?
+    `).bind(serviceName, version, username).first();
+
+    if (existingService) {
+      // Delete related offers first (no FK cascade from offers to services)
+      await this.db.prepare(`
+        DELETE FROM offers WHERE service_id = ?
+      `).bind(existingService.id).run();
+
+      // Delete the service
+      await this.db.prepare(`
+        DELETE FROM services WHERE id = ?
+      `).bind(existingService.id).run();
+    }
+
+    // Insert new service with extracted fields
     await this.db.prepare(`
       INSERT INTO services (id, service_fqn, service_name, version, username, created_at, expires_at)
       VALUES (?, ?, ?, ?, ?, ?, ?)