Jake Vanderwerf
5 days ago a9b3b28d001941921aa70d37fdc87c758a163a44
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/**
 * AuthManager - Handles user authentication state
 *
 * Responsibilities:
 * - Fetch and cache authentication state from /auth/status
 * - Store auth data in sessionStorage to reduce API requests
 * - Invalidate cache when WordPress cookie changes
 * - Provide auth data through class properties
 * - Emit events for auth state changes
 */
class AuthManager {
    constructor() {
        this.initialized = false;
        this.isAuthenticating = false;
        this.authenticated = false;
        this.user = false;
        this.nonces = {};
 
        this.subscribers = new Set();
        this.cacheExpiry = 5 * 60 * 1000; // 5 minutes
 
        this.init();
    }
 
    /**
     * Initialize authentication
     */
    async init() {
        if (this.isAuthenticating) return;
        this.isAuthenticating = true;
 
        try {
            // Inlined by wp_localize_script — zero cost
            if (typeof jvbAuth !== 'undefined') {
                this.setAuthData(jvbAuth);
                this.initialized = true;
                this.isAuthenticating = false;
                this.notify('auth-loaded', { fromCache: false });
                return;
            }
 
            // Fallback: REST fetch (Redis-backed, fast server-side)
            await this.fetchAuth();
 
        } catch (error) {
            this.clearAuthData();
            this.initialized = true;
            this.isAuthenticating = false;
            this.notify('auth-error', { error });
        }
    }
 
    /**
     * Refresh nonce if authentication fails
     */
    async refreshNonce(action = 'wp_rest') {
        try {
            await this.fetchAuth();
            return this.getNonce(action);
        } catch (error) {
            console.error('Failed to refresh nonce:', error);
            return null;
        }
    }
 
    /**
     * Fetch with automatic nonce refresh on auth failure
     * Use this for all authenticated API requests
     */
    async fetch(url, options = {}) {
        const attempt = async (retryCount = 0) => {
            const isFormData = options.body instanceof FormData;
 
            const headers = {
                ...(!isFormData && { 'Content-Type': 'application/json' }),
                ...options.headers,
                'X-WP-Nonce': this.getNonce()
            };
 
            const response = await fetch(url, {
                ...options,
                credentials: 'same-origin',
                headers
            });
 
            if ((response.status === 403 || response.status === 401) && retryCount === 0) {
                const result = await response.clone().json();
                if (result.code === 'rest_cookie_invalid_nonce' || result.message?.includes('Cookie check')) {
                    console.log('Nonce invalid, refreshing auth...');
                    await this.refresh();
                    return attempt(retryCount + 1);
                }
            }
 
            return response;
        };
 
        return attempt();
    }
 
    /**
     * Fetch authentication status from API
     */
    async fetchAuth() {
        const response = await fetch(`${jvbSettings.api}auth/status`, {
            method: 'GET',
            credentials: 'same-origin',
            headers: { 'Content-Type': 'application/json' }
        });
 
        if (!response.ok) throw new Error('Auth check failed');
 
        const authData = await response.json();
        this.setAuthData(authData);
        this.initialized = true;
        this.isAuthenticating = false;
 
        this.notify('auth-loaded', { fromCache: false });
    }
 
    /**
     * Set authentication data
     */
    setAuthData(authData) {
        const wasAuthenticated = this.initialized && this.authenticated;
 
        this.authenticated = authData.authenticated || false;
        this.user = authData.user || false;
        this.nonces = authData.nonces || {};
 
        // Session expired — was logged in, now isn't
        if (wasAuthenticated && !this.authenticated) {
            window.location.href = `/login?redirect_to=${encodeURIComponent(window.location.href)}`;
        }
    }
 
    /**
     * Clear authentication data
     */
    clearAuthData() {
        this.authenticated = false;
        this.user = null;
        this.nonces = {};
    }
 
 
    /**
     * Refresh authentication (force new fetch)
     */
    async refresh() {
        this.isAuthenticating = true;
        this.initialized = false;
 
        try {
            await this.fetchAuth();
            this.notify('auth-refreshed', {});
        } catch (error) {
            console.error('Failed to refresh auth:', error);
            this.clearAuthData();
            this.initialized = true;
            this.isAuthenticating = false;
            this.notify('auth-error', { error });
        }
    }
 
    /**
     * Get nonce for a specific action
     */
    getNonce(action = 'wp_rest') {
        return this.nonces[action] || '';
    }
 
    getUser() {
        return this.user;
    }
 
    isAuthenticated() {
        return this.authenticated;
    }
 
    /**
     * Handle successful login (call after login completes)
     */
    async handleLogin(authData = null) {
        if (authData) {
            this.setAuthData(authData);
            this.initialized = true;
            this.isAuthenticating = false;
            this.notify('auth-loaded', { fromCache: false, fromLogin: true });
            return;
        }
        await this.refresh();
    }
 
    /**
     * Handle logout
     */
    handleLogout() {
        this.clearAuthData();
        this.notify('logged-out', {});
    }
 
    /**
     * Subscribe to auth events
     */
    subscribe(callback) {
        this.subscribers.add(callback);
 
        // If already initialized, immediately notify
        if (this.initialized) {
            callback('auth-loaded', {
                fromCache: false,
                immediate: true
            });
        }
 
        return () => this.subscribers.delete(callback);
    }
 
    /**
     * Notify subscribers of events
     */
    notify(event, data) {
        this.subscribers.forEach(callback => {
            try {
                callback(event, data);
            } catch (error) {
                console.error('Subscriber error:', error);
            }
        });
    }
 
}
 
// Initialize global instance
window.auth = new AuthManager();