import { createServiceApp, registerOptionalJwtContext, startService } from '@bytelyst/fastify-core';
import { jwtVerify } from 'jose';
import { noteAgentActionRoutes } from './modules/note-agent-actions/routes.js';
import { ecosystemPhase1Routes } from './modules/ecosystem-phase1/routes.js';
import { ecosystemPhase3Routes } from './modules/ecosystem-phase3/routes.js';
import { noteArtifactRoutes } from './modules/note-artifacts/routes.js';
import { noteRoutes } from './modules/notes/routes.js';
import { noteRelationshipRoutes } from './modules/note-relationships/routes.js';
import { noteTaskRoutes } from './modules/note-tasks/routes.js';
import { savedViewRoutes } from './modules/saved-views/routes.js';
import { workspaceRoutes } from './modules/workspaces/routes.js';
import { notePromptRoutes } from './modules/note-prompts/routes.js';
import { promptSchedulerRoutes, startSchedulerLoop, stopSchedulerLoop } from './modules/note-prompts/scheduler.js';
import { intakeRoutes } from './modules/intake/routes.js';
import { noteCollaboratorRoutes } from './modules/note-collaborators/routes.js';
import { palaceRoutes } from './modules/palace/routes.js';
import { initCosmosIfNeeded } from './lib/cosmos-init.js';
import { initEncryption } from './lib/field-encrypt.js';
import { initWebhookSubscriber, stopWebhookSubscriber } from './lib/webhook-subscriber.js';
import { initDatastore } from './lib/datastore.js';
import { config } from './lib/config.js';
import { getAllFlags } from './lib/feature-flags.js';
import { getBufferedEvents, flushEvents } from './lib/telemetry.js';
import { DISPLAY_NAME, PRODUCT_ID, productConfig } from './lib/product-config.js';
import type { JwtPayload } from './lib/request-context.js';
import { findShareByToken } from './modules/note-shares/repository.js';
import * as noteRepo from './modules/notes/repository.js';

const jwtSecret = new TextEncoder().encode(config.JWT_SECRET);

await initCosmosIfNeeded();
initDatastore();

const app = await createServiceApp({
  name: config.SERVICE_NAME,
  version: '0.1.0',
  description: `${DISPLAY_NAME} product-specific backend — notes and workspaces`,
  corsOrigin: config.CORS_ORIGIN,
  swagger: {
    title: `${DISPLAY_NAME} Backend`,
    description: 'Notes and workspaces API',
    port: config.PORT,
  },
  metrics: true,
  readiness: true,
});

await registerOptionalJwtContext(app, {
  verifyToken: async (token: string) => {
    const { payload } = await jwtVerify(token, jwtSecret, { issuer: 'bytelyst-platform' });
    return payload as unknown as JwtPayload;
  },
});

type RegisterablePlugin = Parameters<typeof app.register>[0];

async function registerApiPlugin(plugin: unknown) {
  await app.register(plugin as RegisterablePlugin, { prefix: '/api' });
}

await registerApiPlugin(noteAgentActionRoutes);
await registerApiPlugin(ecosystemPhase1Routes);
await registerApiPlugin(ecosystemPhase3Routes);
await registerApiPlugin(noteArtifactRoutes);
await registerApiPlugin(noteRoutes);
await registerApiPlugin(noteRelationshipRoutes);
await registerApiPlugin(noteTaskRoutes);
await registerApiPlugin(savedViewRoutes);
await registerApiPlugin(workspaceRoutes);
await registerApiPlugin(notePromptRoutes);
await registerApiPlugin(promptSchedulerRoutes);
await registerApiPlugin(intakeRoutes);
await registerApiPlugin(noteCollaboratorRoutes);
await registerApiPlugin(palaceRoutes);

// ── Start scheduler loop (F25) ────────────────────────────────────
startSchedulerLoop();
initWebhookSubscriber();
app.addHook('onClose', async () => { stopSchedulerLoop(); stopWebhookSubscriber(); });

// ── Public read-only share (no auth) ───────────────────────────────
app.get('/api/public/note-shares/:token', async (req, reply) => {
  const { token } = req.params as { token: string };
  const share = await findShareByToken(token, PRODUCT_ID);
  if (!share) {
    reply.code(404);
    return { error: 'Share not found or expired' };
  }
  const note = await noteRepo.getNote(share.noteId, share.workspaceId);
  if (!note || note.userId !== share.userId || note.productId !== PRODUCT_ID) {
    reply.code(404);
    return { error: 'Note not available' };
  }
  return {
    product: DISPLAY_NAME,
    noteId: note.id,
    workspaceId: share.workspaceId,
    title: note.title,
    body: note.body,
    updatedAt: note.updatedAt,
  };
});

// ── Bootstrap (no auth) ──────────────────────────────────────────
app.get('/api/bootstrap', async () => ({
  productId: productConfig.productId,
  displayName: productConfig.displayName,
  backendPort: config.PORT,
}));

// ── Diagnostics routes (no auth) ────────────────────────────────
app.get('/api/diagnostics/flags', async () => getAllFlags());
app.get('/api/diagnostics/telemetry', async () => ({ events: getBufferedEvents() }));
app.post('/api/diagnostics/telemetry/flush', async () => ({ flushed: flushEvents().length }));
app.get('/api/diagnostics/config', async () => ({
  productId: PRODUCT_ID,
  serviceName: config.SERVICE_NAME,
  port: config.PORT,
  nodeEnv: config.NODE_ENV,
  dbProvider: config.DB_PROVIDER,
  telemetryEnabled: config.TELEMETRY_ENABLED,
  featureFlagsEnabled: config.FEATURE_FLAGS_ENABLED,
}));

await initEncryption(PRODUCT_ID, app.log);

await startService(app, { port: config.PORT, host: config.HOST });