import { Hono } from 'hono';
import { cors } from 'hono/cors';
import { createRouter } from './create-router';
import type { HonoVariables } from './create-router';
import { authRouter } from './api/auth';
import { serverSettingsRouter } from './api/server-settings/server-settings';
import { landingPageDataRouter } from './api/landing-page-data/landing-page-data';
import { themesRouter } from './api/themes/themes';
import { themeFavoritesRouter } from './api/themes/favorites';
import { waitlistRouter } from './api/waitlist/waitlist';
import { usersRouter } from './api/users/users-router';
import { apiKeysRouter } from './api/api-keys/router';
import { skillsRouter } from './api/skills/skills';
import { tasksRouter } from './api/tasks/tasks';
import { agentsRouter } from './api/agents/agents';
import { toolsRouter } from './api/tools/tools';
import { processesRouter } from './api/processes/processes';
import { rescanRouter } from './api/items/rescan';
import { scrapeRouter } from './api/scrape/scrape';
import { uploadRouter } from './api/upload/upload';
import { settingsRouter } from './api/settings/settings';
import { dashboardsRouter } from './api/dashboards';
import { router as fileBrowserRouter } from './api/file-browser/router';
import { devProxyRouter } from './api/dev-proxy/router';
import { pluginsRouter } from './api/plugins/router';
import { isPluginPublicPath, pluginForProtocolHeaders } from './plugins/public-paths';
import { agentHandoffRouter } from './api/agent-handoff/router';
import { terminalRouter } from './api/terminal/sidecar-server';
import { caldavRouter } from './api/dav/sidecar-server';
// import { memosRouter } from './api/memos/router';
import { appStoreRouter } from './api/app-store/router';
import { davSyncRouter } from './api/dav/sync-router';
import { davRouter } from './api/dav/router';
import { claimIosProfile } from './api/dav/ios-profile';
import { notifyRouter } from './api/notify/router';
import { systemMonitorRouter } from './api/system-monitor/system-monitor';
import { activityRouter } from './api/activity/router';
import { dockRouter } from './api/dock/dock';
import { integrationsRouter, googleCallbackHandler } from './api/integrations/integrations';
import { queueRouter } from './api/queue/queue';
// The browser relay is switched off — see server.tsx. Restoring this mount means restoring the
// registry's claim on '/browser' in the same commit, or assertPermissionTotality refuses to boot.
import { bugReportRouter } from './api/bug-report/bug-report';
import { agentStatusRouter } from './api/agent-status/router';
import { claudeLoginRouter } from './api/auth/claude-login';
import { chatRouter } from './api/chat/chat';
import { commandHqRouter } from './api/command-hq/router';
import { pipelineJobsRouter } from './api/tasks/pipeline-jobs-routes';
import { CustomError } from './custom-errors';
import { userMiddleware, bodyParser, permissionGateMiddleware } from './_middlewares';

export { Hono };
export { createRouter };
export type { HonoVariables };

/**
 * A plugin's router and where it mounts — a plain pair, so this file needs no plugin knowledge at all.
 * Built by `plugins/mount.ts`, which is the side that knows what a manifest is.
 */
export type MountedPlugin = {
  prefix: string;
  router: ReturnType<typeof createRouter>;
  /**
   * An OPTIONAL second router served above the account gate — at declared top-level paths, and for
   * `/api/*` requests carrying a declared protocol header. Absent for every plugin that does not have a
   * foreign protocol to host; see `unauthenticatedRootPaths` in plugins/manifest.ts.
   */
  publicRouter?: ReturnType<typeof createRouter>;
  /** Top-level segments this plugin claims, already de-duplicated against other plugins. */
  rootSegments: string[];
  /** Headers that hand an `/api/*` request to `publicRouter` instead of to Officer. */
  protocolHeaders: string[];
};

// ── The app is BUILT, not assembled once ──
//
// It used to be a module-level `new Hono()` with forty statements run at import. That cannot express
// installing a plugin: Hono's default SmartRouter throws `Can not add a route since the matcher is
// already built` the moment a route is added after serving begins, and Hono has no API to REMOVE a route
// at all — so uninstall was impossible even with a router that allowed adding.
//
// So nothing is added to a live app. A fresh one is built from the current plugin set and swapped in:
//
//     honoServer = buildHonoApp(plugins)      // install, uninstall, enable, disable — all the same call
//
// `server.tsx` serves it through a CLOSURE (`(req, server) => honoServer.fetch(req, server)`), not the
// bound `honoServer.fetch`, so the reassignment above IS the swap. Verified end to end: a route 404s
// before install, 200s after, and 404s again after uninstall, with core routes untouched throughout.
//
// Two things this buys over adding routes to a live app: the default SmartRouter is kept, so the fast
// RegExpRouter path survives — and uninstall is expressible, which an add-only API cannot do.

// Origin checking was removed on 2026-08-13, so CORS echoes back whatever Origin it is given. That is
// not a loosening: the check it replaced defaulted to off, so this is what every real install already
// did. The perimeter is the tailnet and the lock is a valid token on every protected route, plus the
// permission gate below.
const corsMiddleware = cors({
  origin: (origin) => origin ?? '*',
  allowMethods: ['GET', 'POST', 'PUT', 'PATCH', 'DELETE'],
  allowHeaders: ['Content-Type', 'Authorization'],
});

// The DAV doors are the one place CORS must NOT run, because hono's cors() answers every OPTIONS itself
// as a preflight — 204, no body, no DAV headers — and never calls the route beneath it.
//
// OPTIONS is not a preflight to a DAV client. It is how the client asks what the server can do, and the
// answer it needs is the `DAV: 1, 2, 3, calendar-access, addressbook` header. iOS sends it during account
// setup and refuses the account when it is missing, reporting the failure as "Cannot connect using SSL" —
// a message about TLS for a problem that has nothing to do with TLS, which is how this cost an evening.
//
// Nothing is lost by skipping it: a CalDAV client is not a browser and has no origin to check.
const isDavPath = (path: string) =>
  path === '/dav' || path.startsWith('/dav/') || path === '/.well-known/caldav' || path === '/.well-known/carddav';

// The mount table, as DATA rather than forty statements.
//
// The reason is the permission registry: assertPermissionTotality refuses to boot unless every mounted
// prefix maps to exactly one permission, and that check is only worth anything if it reads the real mount
// list. A hand-copied second list would drift, and the drift would be invisible until someone tried a
// prefix nobody had gated — which is precisely how the websocket hole happened.
//
// Order is irrelevant here: every prefix is distinct, so hono's registration-order matching has nothing to
// disambiguate. `/pipeline-jobs` and `/jobs` deliberately share one router.
const PROTECTED_MOUNTS: [prefix: string, router: ReturnType<typeof createRouter>][] = [
  ['/server-settings', serverSettingsRouter],
  // Protected, unlike `/themes` beside it — see api/themes/favorites.ts for why they are separate mounts.
  ['/theme-favorites', themeFavoritesRouter],
  ['/users', usersRouter],
  ['/skills', skillsRouter],
  ['/tasks', tasksRouter],
  ['/agents', agentsRouter],
  ['/tools', toolsRouter],
  ['/processes', processesRouter],
  ['/rescan', rescanRouter],
  ['/scrape', scrapeRouter],
  ['/upload', uploadRouter],
  ['/user', settingsRouter],
  ['/api-keys', apiKeysRouter], // your own keys; the `account` core permission covers it
  ['/dashboards', dashboardsRouter],
  ['/file-browser', fileBrowserRouter],
  ['/terminal', terminalRouter],
  // ['/memos', memosRouter],  // plugin — switched off 2026-08-13
  ['/app-store', appStoreRouter],
  ['/plugins', pluginsRouter],
  ['/caldav', caldavRouter], // the JSON door for Officer's own calendar/contacts UI
  ['/dav', davRouter], // app-password management (the sync door is /dav, top-level)
  ['/notify', notifyRouter], // core since 2026-08-19 — the one outbound-notification surface
  // ['/photos', photosRouter],  // plugin — switched off 2026-08-13
  ['/system-monitor', systemMonitorRouter],
  ['/activity', activityRouter],
  ['/dock', dockRouter],
  ['/integrations', integrationsRouter],
  ['/queue', queueRouter],
  ['/bug-report', bugReportRouter],
  ['/agent-status', agentStatusRouter],
  ['/claude-auth', claudeLoginRouter],
  ['/chat', chatRouter],
  ['/command-hq', commandHqRouter],
  ['/pipeline-jobs', pipelineJobsRouter],
  ['/jobs', pipelineJobsRouter], // unified jobs API (script + pipeline); /pipeline-jobs kept for the existing UI
];

/** Every prefix served behind the account gate. Read by the permission totality check at boot. */
export const PROTECTED_API_PREFIXES: string[] = PROTECTED_MOUNTS.map(([prefix]) => prefix);

/**
 * Mounted above the account gate, and so exempt from permission checks — see EXEMPT_API_PREFIXES in
 * permissions/totality.ts, which has to justify each one.
 */
export const UNPROTECTED_API_PREFIXES: string[] = [
  '/auth',
  '/landing-page-data',
  '/themes',
  '/waitlist',
  '/sidecar',
  '/agent-handoff',
  '/dev-proxy',
];

/**
 * Build the whole application from the plugins currently installed.
 *
 * Pure: it reads nothing and mutates nothing. Everything it needs arrives as an argument, so a caller
 * can build an app for a hypothetical plugin set — which is what makes the swap testable without a
 * database, a filesystem or a running server.
 */
export function buildHonoApp(plugins: MountedPlugin[] = []): Hono<{ Variables: HonoVariables }> {
  const app = new Hono<{ Variables: HonoVariables }>();

  app.use((ctx, next) => (isDavPath(ctx.req.path) ? next() : corsMiddleware(ctx, next)));

  /*
    A plugin's PUBLIC router, mounted above everything — the gate, `userMiddleware`, the whole platform API.

    Two shapes, both for the same reason: a client speaking a protocol Officer does not define, which
    derives its own URLs and cannot be told to look elsewhere. See `unauthenticatedRootPaths` in
    plugins/manifest.ts for why this exists at all and how narrow it is kept.

      root paths      `/identity/*` and friends — a single claimed segment each, refused if reserved or
                      already taken.
      protocol header `/api/*` when the request carries a declared header. Registered BEFORE the platform's
                      own `/api` mount, because hono matches in registration order and this has to win.
                      ROUTING, not authentication — a forged header reaches the plugin, which demands its
                      own credential; it cannot reach anything of Officer's.
  */
  for (const plugin of plugins) {
    if (!plugin.publicRouter) continue;
    for (const segment of plugin.rootSegments) app.route(`/${segment}`, plugin.publicRouter);
  }

  const protocolPlugins = plugins.filter((p) => p.publicRouter && p.protocolHeaders.length);
  if (protocolPlugins.length) {
    app.use('/api/*', async (ctx, next) => {
      const appName = pluginForProtocolHeaders(ctx.req.raw.headers);
      if (!appName) return next();
      const claimant = protocolPlugins.find((p) => p.prefix === `/${appName}` || p.prefix.endsWith(`/${appName}`));
      if (!claimant?.publicRouter) return next();
      return claimant.publicRouter.fetch(ctx.req.raw, ctx.env);
    });
  }

  // The authorization gate: a valid non-owner token reaches only what its role grants. Ahead of every
  // router, and it re-verifies the token itself so it covers routes that never mount userMiddleware.
  app.use(permissionGateMiddleware);

  app.get('/api', (ctx) => ctx.json({ officerAPI: 'ok' }));
  app.route('/api/auth', authRouter);
  app.route('/api/landing-page-data', landingPageDataRouter);
  app.route('/api/themes', themesRouter);
  app.route('/api/waitlist', waitlistRouter);
  app.get('/api/integrations/google/callback', googleCallbackHandler);

  // Agent-to-agent handoff — mounted TOP-LEVEL for the same reason the vault is: the caller is a Claude
  // session running a curl, and it carries a per-panel bearer token rather than a platform session JWT,
  // so userMiddleware would 401 it and a permission lookup would have no account to resolve. The token
  // identifies exactly one agent panel and authorises exactly one action: deliver a prompt to a named
  // peer on that panel's own dashboard. See servers/api/agent-handoff/router.ts.
  app.route('/api/agent-handoff', agentHandoffRouter);

  // Loopback dev servers, framed by the Preview panel.
  //
  // UNPROTECTED because an iframe navigation carries no Authorization header — `userMiddleware` would 401
  // the document before the router saw it, which is exactly what happened: the pane showed the
  // middleware's "Unauthorized", not this router's own message. It is not open: the router verifies the
  // OWNER's token on `/session` and requires the cookie that issues on everything else.
  app.route('/api/dev-proxy', devProxyRouter);

  // CalDAV/CardDAV for phones and desktop clients — mounted TOP-LEVEL for the same reason the vault is:
  // DAVx5, iOS and Thunderbird authenticate with HTTP Basic on every request and have nowhere to put a
  // platform JWT, so userMiddleware would 401 them. The credential is a scoped DAV app password; see
  // api/dav/sync-router.ts.
  // The iOS profile download, registered BEFORE the /dav mount below because hono matches in registration
  // order and davSyncRouter's `/*` would otherwise demand HTTP Basic for it. Safari has no credential to
  // offer — it was handed a URL by the app and nothing else — so the one-shot token in the path IS the
  // authentication. Minted by POST /api/dav/provision/ios; see api/dav/ios-profile.ts.
  app.get('/dav/provision/:file', (ctx) => {
    const file = ctx.req.param('file');
    const token = file.endsWith('.mobileconfig') ? file.slice(0, -'.mobileconfig'.length) : null;
    const body = token ? claimIosProfile(token) : null;
    // Expired, already used, or never existed — all the same 404. There is nothing useful to tell a
    // caller who has the wrong token, and distinguishing the cases would confirm that a token once existed.
    if (!body) return ctx.text('not found', 404);

    return new Response(body as unknown as BodyInit, {
      headers: {
        // Mandatory. iOS identifies a configuration profile by MIME type; served as octet-stream or
        // text/xml the file downloads and the OS does nothing with it.
        'Content-Type': 'application/x-apple-aspen-config',
        'Cache-Control': 'no-store',
      },
    });
  });

  app.route('/dav', davSyncRouter);

  // Autodiscovery. This is most of what makes adding an account on a phone feel transparent instead of
  // fiddly: the client is given a bare domain and probes these paths UNAUTHENTICATED before it has any
  // credential, so they must sit above every auth gate. Without them iOS in particular degrades to
  // demanding a full collection URL, which is exactly the sort of thing that makes self-hosting feel
  // worse than the commercial product it is replacing.
  // `.all`, not `.get`: RFC 6764 §6 has the client probe the well-known URI with the method it actually
  // wants to use, and iOS sends PROPFIND, not GET. Registered as GET-only these answered 404 to every real
  // client while looking perfectly healthy in a browser.
  app.all('/.well-known/caldav', (ctx) => ctx.redirect('/dav/', 301));
  app.all('/.well-known/carddav', (ctx) => ctx.redirect('/dav/', 301));

  const protectedRouter = createRouter();
  protectedRouter.use(bodyParser());
  /*
    A session is required for everything here EXCEPT a plugin's declared `unauthenticatedPaths`.

    The permission gate above is not enough on its own, and the reason is worth stating: that gate only
    runs when a token was presented (`payload && !isOwner && …`), so it is what stops a valid non-owner
    reaching something they were not granted. What stops an ANONYMOUS request is this line — so a path
    that is supposed to answer without a session has to skip it here, not only there.

    `ctx.req.path` is the full request path even inside a mounted router, so the patterns can be absolute
    and resolved once at mount rather than re-derived per request.
  */
  protectedRouter.use((ctx, next) => (isPluginPublicPath(ctx.req.path) ? next() : userMiddleware(ctx, next)));
  for (const [prefix, router] of PROTECTED_MOUNTS) protectedRouter.route(prefix, router);

  // Plugin routes, mounted behind the same account gate as everything else — a plugin is part of the
  // application, not a guest in it, so it gets no separate door and no weaker middleware.
  //
  // `mountPrefix` decides where, from the manifest's `publisher` and nothing else. Nothing here may
  // branch on provenance: the moment first-party and third-party differ anywhere but that one function,
  // they become two systems and only one of them is exercised.
  for (const plugin of plugins) protectedRouter.route(plugin.prefix, plugin.router);

  app.route('/api', protectedRouter);

  app.onError((error, ctx) => {
    if (error instanceof CustomError) {
      if (error.returnValue) {
        if (typeof error.returnValue === 'string') {
          return ctx.text(error.returnValue, error.statusCode);
        } else {
          return ctx.json(error.returnValue, error.statusCode);
        }
      }
      return ctx.text(error.message, error.statusCode);
    }

    console.error('Unexpected error:', error.message);
    console.log(error.stack);
    return ctx.text('Internal Server Error', 500);
  });

  return app;
}

/**
 * The live app. `let`, and reassigned by `rebuildHonoApp` — see the note at the top of this file.
 *
 * Starts with no plugins because discovery reads the disk and the database, which is asynchronous and
 * must not happen at import. `server.tsx` rebuilds once both have answered.
 */
export let honoServer = buildHonoApp();

/** Swap the live app for one built from `plugins`. The whole of install, uninstall, enable and disable. */
export function rebuildHonoApp(plugins: MountedPlugin[]): Hono<{ Variables: HonoVariables }> {
  honoServer = buildHonoApp(plugins);
  return honoServer;
}