Add Go project scaffold for Wails v2 SSH/Telnet/RAW TCP client

- go.mod with Wails v2.9.2, x/crypto, go-sqlite3, go-keyring, uuid - cmd/app/main.go: Wails entry point (Nexus Terminal, 1400x900, #1a1a2e) - internal/app/app.go: lifecycle (Startup/Shutdown/DomReady) - internal/models/models.go: full model definitions (Profile, SSHConfig, TelnetConfig, RAWConfig, SessionInfo, KnownHost, AppPreferences, etc.) - internal/models/defaults.go: default values and NewProfile factory - internal/validation/validation.go: thorough field-level validation - frontend/embed.go: embedded frontend assets - Updated existing storage, secrets, config to match new model structure
2026-04-15 00:00:00 +01:00
commit 35bc9c75b1
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+/**
+ * Nexus Terminal — toast notification system.
+ * Provides non-blocking, auto-dismissing notifications that stack
+ * in the top-right corner of the viewport.
+ */
+
+import { createElement, escapeHtml } from './utils.js';
+
+/** Map of notification type to SVG icon path data. */
+const ICONS = {
+    success: 'M9 12l2 2 4-4m6 2a9 9 0 11-18 0 9 9 0 0118 0z',
+    error: 'M10 14l2-2m0 0l2-2m-2 2l-2-2m2 2l2 2m7-2a9 9 0 11-18 0 9 9 0 0118 0z',
+    warning: 'M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-3L13.732 4c-.77-1.333-2.694-1.333-3.464 0L3.34 16c-.77 1.333.192 3 1.732 3z',
+    info: 'M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z',
+};
+
+export class Notifications {
+    constructor() {
+        /** @type {HTMLElement} */
+        this.container = document.getElementById('notifications');
+        if (!this.container) {
+            // Create the container if it does not yet exist
+            this.container = createElement('div', 'notifications-container', { id: 'notifications' });
+            document.body.appendChild(this.container);
+        }
+    }
+
+    /**
+     * Displays a toast notification.
+     * @param {string} message - Notification text.
+     * @param {'info'|'success'|'warning'|'error'} [type='info'] - Severity.
+     * @param {number} [duration=4000] - Auto-dismiss delay in ms. Pass 0 to keep until dismissed.
+     */
+    show(message, type = 'info', duration = 4000) {
+        const toast = createElement('div', `toast toast-${type}`);
+
+        // Icon
+        const iconSvg = document.createElementNS('http://www.w3.org/2000/svg', 'svg');
+        iconSvg.setAttribute('class', 'toast-icon');
+        iconSvg.setAttribute('viewBox', '0 0 24 24');
+        iconSvg.setAttribute('fill', 'none');
+        iconSvg.setAttribute('stroke', 'currentColor');
+        iconSvg.setAttribute('stroke-width', '2');
+        const iconPath = document.createElementNS('http://www.w3.org/2000/svg', 'path');
+        iconPath.setAttribute('stroke-linecap', 'round');
+        iconPath.setAttribute('stroke-linejoin', 'round');
+        iconPath.setAttribute('d', ICONS[type] || ICONS.info);
+        iconSvg.appendChild(iconPath);
+        toast.appendChild(iconSvg);
+
+        // Message
+        const msg = createElement('span', 'toast-message', { textContent: message });
+        toast.appendChild(msg);
+
+        // Dismiss button
+        const close = createElement('button', 'toast-close', { textContent: '×', 'aria-label': 'Dismiss' });
+        close.addEventListener('click', () => this._dismiss(toast));
+        toast.appendChild(close);
+
+        // Insert at the top of the stack
+        this.container.prepend(toast);
+
+        // Trigger enter animation on next frame
+        requestAnimationFrame(() => {
+            toast.classList.add('toast-enter');
+        });
+
+        // Auto-dismiss
+        if (duration > 0) {
+            toast._timer = setTimeout(() => this._dismiss(toast), duration);
+        }
+    }
+
+    /**
+     * Shorthand: success notification.
+     * @param {string} message
+     */
+    success(message) {
+        this.show(message, 'success');
+    }
+
+    /**
+     * Shorthand: error notification (longer display time).
+     * @param {string} message
+     */
+    error(message) {
+        this.show(message, 'error', 6000);
+    }
+
+    /**
+     * Shorthand: warning notification.
+     * @param {string} message
+     */
+    warning(message) {
+        this.show(message, 'warning');
+    }
+
+    /**
+     * Shorthand: informational notification.
+     * @param {string} message
+     */
+    info(message) {
+        this.show(message, 'info');
+    }
+
+    /**
+     * Animates out and removes a toast element.
+     * @param {HTMLElement} toast
+     * @private
+     */
+    _dismiss(toast) {
+        if (toast._dismissed) return;
+        toast._dismissed = true;
+        clearTimeout(toast._timer);
+
+        toast.classList.add('toast-exit');
+        toast.addEventListener('animationend', () => toast.remove(), { once: true });
+
+        // Safety net — remove after 500 ms even if animation event does not fire
+        setTimeout(() => {
+            if (toast.parentNode) toast.remove();
+        }, 500);
+    }
+}