// ==========================================
// Armature — SDK Entry Point
// ==========================================
// Assembles all SDK modules into the `sw` object
// and runs the boot sequence.
//
// Usage:
//   import { boot } from './js/sw/sdk/index.js';
//   const sw = await boot();
//
// Exports: boot() → window.sw
// ==========================================

import { createRestClient } from './rest-client.js';
import { createAuth }       from './auth.js';
import { createCan }        from './can.js';
import { createDomains }    from './api-domains.js';
import { createEvents }     from './events.js';
import { createPipe }       from './pipe.js';
import { createTheme }      from './theme.js';
import { createStorage }    from './storage.js';
import { createSlots }      from './slots.js';
import { createActions }    from './actions.js';
import { createRealtime }   from './realtime.js';
import { createRenderers }  from './renderers.js';
import { createMarkdown }   from './markdown.js';
import { createUsers }      from './users.js';
import { createTesting }    from './testing.js';
import { createForms }      from './forms.js';
import { confirm }          from '../primitives/confirm.js';
import { prompt }           from '../primitives/prompt.js';

/**
 * Boot the SDK. Assembles modules, loads auth state, connects WebSocket.
 * Idempotent — returns the same sw object on subsequent calls.
 *
 * @returns {Promise<object>} sw
 */
export async function boot() {
    // Idempotent
    if (window.sw?._sdk) return window.sw;

    // 1. Auth — owns token state
    const auth = createAuth();

    // 2. REST client — uses auth for token injection + refresh
    const restClient = createRestClient(
        () => auth._getToken(),
        () => auth._onRefresh(),
        () => auth._on401Failure()
    );

    // 3. Wire rest client into auth (auth needs it for login/refresh/permissions calls)
    auth._setRestClient(restClient);

    // 4. Events — with WS auth callback
    const events = createEvents(async () => {
        // Prefer ticket exchange
        try {
            const data = await restClient.post('/api/v1/ws/ticket', {});
            if (data?.ticket) return `ticket=${encodeURIComponent(data.ticket)}`;
        } catch (_) { /* fall through to legacy */ }
        // Legacy fallback: JWT in query param
        const token = auth._getToken();
        return token ? `token=${encodeURIComponent(token)}` : null;
    });

    // 5. Wire emit into auth
    auth._setEmit(events.emit.bind(events));

    // 6. Remaining modules
    const { can, isAdmin, isTeamAdmin } = createCan(auth);
    const api     = createDomains(restClient);
    const pipe    = createPipe();
    const theme   = createTheme(events.emit.bind(events));
    const storage = createStorage();
    const slots   = createSlots(events.emit.bind(events));
    const actions = createActions(events.emit.bind(events));
    const realtime = createRealtime(events);
    const renderers = createRenderers(events.emit.bind(events));
    const markdown  = createMarkdown(renderers);

    // 7. Assemble sw object
    const sw = Object.create(null);

    // Auth
    sw.auth = auth;

    // API domains
    sw.api = api;

    // RBAC
    sw.can = can;
    Object.defineProperty(sw, 'isAdmin', {
        get() { return isAdmin(); },
        enumerable: true,
    });
    sw.isTeamAdmin = isTeamAdmin;

    // Events (expose as top-level convenience + events namespace for connect/disconnect)
    sw.on   = events.on.bind(events);
    sw.once = events.once.bind(events);
    sw.off  = events.off.bind(events);
    sw.emit = events.emit.bind(events);
    sw.events = events;

    // Pipe, Theme, Storage, Slots, Actions
    sw.pipe    = pipe;
    sw.theme   = theme;
    sw.storage = storage;
    sw.slots   = slots;
    sw.actions = actions;

    // Realtime — room-scoped pub/sub over WebSocket
    sw.realtime = realtime;

    // Renderers — kernel-level block/post renderer registry
    sw.renderers = renderers;

    // Markdown — unified renderer (marked + DOMPurify + sw.renderers pipeline)
    sw.markdown = markdown;

    // Users — identity resolution with local caching
    sw.users = createUsers(restClient);

    // Testing — structured test framework for surface runners
    sw.testing = createTesting(events, restClient);

    // Forms — typed form rendering + validation (v0.9.5)
    sw.forms = createForms(restClient);

    // Shell helpers — imperative confirm/prompt backed by primitives
    sw.confirm = confirm;
    sw.prompt  = prompt;

    // Shell — layout utilities (decouples surface code from shell DOM)
    const _shell = {
        /** @deprecated v0.6.10 — CSS zoom handles reflow; no scale correction needed. */
        getScale() { return 1; },
        /** Topbar — set after dynamic import below */
        Topbar: null,
    };
    sw.shell = _shell;

    // Toast — dynamic import to avoid module resolution issues
    try {
        const toastMod = await import('../primitives/toast.js');
        sw.toast = toastMod.toast;
        events.on('toast', ({ message, variant, duration }) => {
            toastMod.toast(message, variant, duration);
        });
    } catch (e) {
        console.warn('[sw] Toast import failed:', e.message);
    }

    // UI primitives — extensions use sw.ui.Button, sw.ui.Dialog, etc.
    try {
        const primitives = await import('../primitives/index.js');
        sw.ui = Object.freeze({ ...primitives });
    } catch (e) {
        console.warn('[sw] Primitives import failed:', e.message);
        sw.ui = Object.freeze({});
    }

    // Topbar — standard navigation bar for surfaces (legacy API)
    try {
        const topbarMod = await import('../shell/topbar.js');
        _shell.Topbar = topbarMod.Topbar;
    } catch (e) {
        console.warn('[sw] Topbar import failed:', e.message);
    }

    // Shell Topbar — kernel-injected two-slot topbar
    try {
        const shellTopbarMod = await import('../shell/shell-topbar.js');
        _shell.topbar = shellTopbarMod.shellTopbarAPI;
        _shell._ShellTopbar = shellTopbarMod.ShellTopbar;
    } catch (e) {
        console.warn('[sw] ShellTopbar import failed:', e.message);
    }

    // Freeze shell now that all shell modules are loaded
    sw.shell = Object.freeze(_shell);

    // UserMenu render helper — surfaces call sw.userMenu(container, opts)
    sw.userMenu = function (container, opts = {}) {
        import('../shell/user-menu.js').then(({ UserMenu }) => {
            const { render } = preact;
            render(html`<${UserMenu} ...${opts} />`, container);
        });
    };

    // Navigate — multi-surface intra-package routing
    sw.navigate = function (path, params) {
        const manifest = window.__MANIFEST__;
        if (!manifest?.id) {
            console.warn('[sw] navigate: no manifest — not inside an extension surface');
            return;
        }
        // Interpolate :param placeholders
        let resolved = path;
        if (params) {
            for (const [k, v] of Object.entries(params)) {
                resolved = resolved.replace(':' + k, encodeURIComponent(v));
            }
        }
        const base = window.__BASE__ || '';
        const url = base + '/s/' + manifest.id + resolved;

        // Update globals so the package can re-render
        window.__SURFACE_PATH__ = path;
        window.__SURFACE_PARAMS__ = params || {};

        history.pushState({ surfacePath: path, surfaceParams: params }, '', url);
        events.emit('surface.navigate', { path, params: params || {}, url }, { localOnly: true });
    };

    // Listen for popstate (back/forward) to emit navigation events
    window.addEventListener('popstate', (e) => {
        if (e.state?.surfacePath != null) {
            window.__SURFACE_PATH__ = e.state.surfacePath;
            window.__SURFACE_PARAMS__ = e.state.surfaceParams || {};
            events.emit('surface.navigate', {
                path: e.state.surfacePath,
                params: e.state.surfaceParams || {},
                url: location.pathname,
            }, { localOnly: true });
        }
    });

    // Seed initial history state so back-navigation from sw.navigate() works.
    // Without this, the initial server-rendered page has no pushState entry,
    // so pressing back after sw.navigate() fires popstate with null state.
    if (window.__SURFACE_PATH__) {
        history.replaceState(
            { surfacePath: window.__SURFACE_PATH__, surfaceParams: window.__SURFACE_PARAMS__ || {} },
            ''
        );
    }

    // Marker for idempotency
    sw._sdk = '0.9.5';

    // 8. Expose globally
    window.sw = sw;

    // 9. Boot sequence
    theme.init();

    try {
        await auth.boot();
    } catch (e) {
        console.warn('[sw] Auth boot failed (expected without backend):', e.message);
    }

    if (auth.isAuthenticated) {
        const BASE = window.__BASE__ || '';
        events.connect(BASE + '/ws');
    }

    // 10. Mount imperative hosts (Toast, DialogStack) if not already present.
    //     Core surfaces mount these via AppShell; extension surfaces need SDK to do it.
    try {
        const hostId = 'sw-imperative-hosts';
        if (!document.getElementById(hostId)) {
            const mount = document.createElement('div');
            mount.id = hostId;
            document.body.appendChild(mount);
            const { ToastContainer } = await import('../primitives/toast.js');
            const { DialogStack } = await import('../shell/dialog-stack.js');
            const { render } = preact;
            render(html`<${ToastContainer} /><${DialogStack} />`, mount);
        }
    } catch (e) {
        console.warn('[sw] Imperative host mount failed:', e.message);
    }

    // 11. Auto-mount shell topbar if #shell-topbar exists
    try {
        const shellMount = document.getElementById('shell-topbar');
        if (shellMount && sw.shell._ShellTopbar && auth.isAuthenticated) {
            const { render } = preact;
            render(html`<${sw.shell._ShellTopbar} />`, shellMount);
        }
    } catch (e) {
        console.warn('[sw] Shell topbar mount failed:', e.message);
    }

    // 12. Signal ready
    events.emit('sdk.ready', {}, { localOnly: true });
    document.dispatchEvent(new CustomEvent('sw:ready', { detail: { sw } }));
    console.log(`[sw] SDK v${sw._sdk} ready`);

    return sw;
}