/**
 * Interactive Architecture Diagram Component
 * Tractatus Framework - Phase 3: Interactive Architecture Diagram
 *
 * Handles click/hover interactions on the hexagonal service diagram
 * Shows service details in a side panel
 */

class InteractiveDiagram {
  constructor() {
    this.serviceData = {
      overview: {
        name: 'Tractatus Governance Layer',
        shortName: 'Overview',
        color: '#0ea5e9',
        icon: '⚙️',
        description: 'Six external governance services working together to enforce AI safety boundaries outside the AI runtime.',
        details: [
          'All services operate externally to the AI—making manipulation harder',
          'Instruction storage and validation work together to prevent directive fade',
          'Boundary enforcement and deliberation coordinate on values decisions',
          'Pressure monitoring adjusts verification requirements dynamically',
          'Metacognitive gates ensure AI pauses before high-risk operations',
          'Each service addresses a different failure mode in AI safety'
        ],
        promise: 'External architectural enforcement that is structurally more difficult to bypass than behavioral training alone.'
      },
      boundary: {
        name: 'BoundaryEnforcer',
        shortName: 'Boundary',
        color: '#10b981',
        icon: '🔒',
        description: 'Blocks AI from making values decisions (privacy, ethics, strategic direction). Requires human approval.',
        details: [
          'Enforces Tractatus 12.1-12.7 boundaries',
          'Values decisions architecturally require humans',
          'Prevents AI autonomous decision-making on ethical questions',
          'External enforcement - harder to bypass via prompting'
        ],
        promise: 'Values boundaries enforced externally—harder to manipulate through prompting.'
      },
      instruction: {
        name: 'InstructionPersistenceClassifier',
        shortName: 'Instruction',
        color: '#6366f1',
        icon: '📋',
        description: 'Stores instructions externally with persistence levels (HIGH/MEDIUM/LOW). Aims to reduce directive fade.',
        details: [
          'Quadrant-based classification (STR/OPS/TAC/SYS/STO)',
          'Time-persistence metadata tagging',
          'Temporal horizon modeling (STRATEGIC, OPERATIONAL, TACTICAL)',
          'External storage independent of AI runtime'
        ],
        promise: 'Instructions stored outside AI—more resistant to context manipulation.'
      },
      validator: {
        name: 'CrossReferenceValidator',
        shortName: 'Validator',
        color: '#8b5cf6',
        icon: '✓',
        description: 'Validates AI actions against instruction history. Aims to prevent pattern bias overriding explicit directives.',
        details: [
          'Cross-references AI claims with external instruction history',
          'Detects pattern-based overrides of explicit user directives',
          'Independent verification layer',
          'Helps prevent instruction drift'
        ],
        promise: 'Independent verification—AI claims checked against external source.'
      },
      pressure: {
        name: 'ContextPressureMonitor',
        shortName: 'Pressure',
        color: '#f59e0b',
        icon: '⚡',
        description: 'Monitors AI performance degradation. Escalates when context pressure threatens quality.',
        details: [
          'Tracks token usage, complexity, error rates',
          'Detects degraded operating conditions',
          'Adjusts verification requirements under pressure',
          'Objective metrics for quality monitoring'
        ],
        promise: 'Objective metrics may detect manipulation attempts early.'
      },
      metacognitive: {
        name: 'MetacognitiveVerifier',
        shortName: 'Metacognitive',
        color: '#ec4899',
        icon: '💡',
        description: 'Requires AI to pause and verify complex operations before execution. Structural safety check.',
        details: [
          'AI self-checks alignment, coherence, safety before execution',
          'Structural pause-and-verify gates',
          'Selective verification (not constant)',
          'Architectural enforcement of reflection steps'
        ],
        promise: 'Architectural gates aim to enforce verification steps.'
      },
      deliberation: {
        name: 'PluralisticDeliberationOrchestrator',
        shortName: 'Deliberation',
        color: '#14b8a6',
        icon: '👥',
        description: 'Facilitates multi-stakeholder deliberation for values conflicts where no single "correct" answer exists.',
        details: [
          'Non-hierarchical coordination for values conflicts',
          'Stakeholder perspective representation',
          'Consensus-building for ethical trade-offs',
          'Addresses values pluralism in AI safety'
        ],
        promise: 'Facilitates deliberation across stakeholder perspectives for values conflicts.'
      }
    };

    this.activeService = null;
    this.init();
  }

  init() {
    if (document.readyState === 'loading') {
      document.addEventListener('DOMContentLoaded', () => this.setup());
    } else {
      this.setup();
    }

    console.log('[InteractiveDiagram] Initialized');
  }

  setup() {
    // SVG is loaded via <object> tag, need to access its contentDocument
    const objectElement = document.getElementById('interactive-svg-object');
    if (!objectElement) {
      console.warn('[InteractiveDiagram] SVG object element not found');
      return;
    }

    // Wait for object to load with retry mechanism
    const initializeSVG = () => {
      const svgDoc = objectElement.contentDocument;
      if (!svgDoc) {
        console.warn('[InteractiveDiagram] Could not access SVG contentDocument, retrying...');
        // Retry after a short delay
        setTimeout(initializeSVG, 100);
        return;
      }

      // The SVG is the document element itself, or we can query for it
      let svg = svgDoc.getElementById('interactive-arch-diagram');
      if (!svg) {
        // Try getting the root SVG element
        svg = svgDoc.documentElement;
        console.log('[InteractiveDiagram] Using documentElement as SVG');
      }

      if (!svg) {
        console.warn('[InteractiveDiagram] SVG diagram not found in contentDocument');
        return;
      }

      // Verify it's actually an SVG element (case-insensitive check)
      const tagName = svg.tagName ? svg.tagName.toLowerCase() : '';
      if (tagName !== 'svg') {
        console.warn('[InteractiveDiagram] Element found but not SVG, tagName:', tagName);
        return;
      }

      // Store reference to SVG document for later use
      this.svgDoc = svgDoc;
      this.svg = svg;

      const nodes = svg.querySelectorAll('.service-node');
      console.log(`[InteractiveDiagram] Found ${nodes.length} service nodes`);

      if (nodes.length === 0) {
        console.warn('[InteractiveDiagram] No service nodes found in SVG');
        return;
      }

      nodes.forEach(node => {
        const serviceId = node.getAttribute('data-service');
        console.log(`[InteractiveDiagram] Attaching listeners to service: ${serviceId}`);

        // Use event capturing to ensure events are caught
        node.addEventListener('click', (e) => {
          e.preventDefault();
          e.stopPropagation();
          console.log(`[InteractiveDiagram] Clicked service: ${serviceId}`);
          this.showServiceDetails(serviceId);
        }, true);

        node.addEventListener('mouseenter', () => {
          this.highlightService(serviceId);
        });

        node.addEventListener('mouseleave', () => {
          this.unhighlightService(serviceId);
        });

        // Add pointer cursor via JavaScript (CSP-compliant)
        node.style.cursor = 'pointer';
      });

      this.addKeyboardNavigation(nodes);

      // Show initial state (overview)
      this.showServiceDetails('overview');
      console.log('[InteractiveDiagram] Setup complete, showing overview');
    };

    // Try multiple approaches to ensure SVG loads
    if (objectElement.contentDocument && objectElement.contentDocument.readyState === 'complete') {
      // Object already loaded and ready
      console.log('[InteractiveDiagram] Object already loaded, initializing immediately');
      initializeSVG();
    } else {
      // Wait for load event
      console.log('[InteractiveDiagram] Waiting for object to load...');
      objectElement.addEventListener('load', () => {
        console.log('[InteractiveDiagram] Object loaded event fired');
        initializeSVG();
      });

      // Also try after a short delay as fallback
      setTimeout(initializeSVG, 500);
    }
  }

  highlightService(serviceId) {
    if (!this.svg) return;

    const connectionLine = this.svg.querySelector(`#conn-${serviceId}`);
    if (connectionLine) {
      connectionLine.classList.add('active');
    }

    const node = this.svg.querySelector(`#node-${serviceId}`);
    if (node) {
      node.classList.add('hover');
    }
  }

  unhighlightService(serviceId) {
    if (!this.svg) return;

    if (this.activeService === serviceId) return;

    const connectionLine = this.svg.querySelector(`#conn-${serviceId}`);
    if (connectionLine) {
      connectionLine.classList.remove('active');
    }

    const node = this.svg.querySelector(`#node-${serviceId}`);
    if (node) {
      node.classList.remove('hover');
    }
  }

  showServiceDetails(serviceId) {
    const service = this.serviceData[serviceId];
    if (!service) {
      console.error('[InteractiveDiagram] Service not found:', serviceId);
      return;
    }

    this.activeService = serviceId;

    if (this.svg) {
      this.svg.querySelectorAll('.service-node').forEach(n => n.classList.remove('active'));
      this.svg.querySelectorAll('.connection-line').forEach(l => l.classList.remove('active'));

      const node = this.svg.querySelector(`#node-${serviceId}`);
      if (node) {
        node.classList.add('active');
      }

      const connectionLine = this.svg.querySelector(`#conn-${serviceId}`);
      if (connectionLine) {
        connectionLine.classList.add('active');
      }
    }

    this.renderServicePanel(service);

    console.log('[InteractiveDiagram] Showing details for:', service.name);
  }

  renderServicePanel(service) {
    const panel = document.getElementById('service-detail-panel');

    if (!panel) {
      console.error('[InteractiveDiagram] Service detail panel not found in DOM');
      return;
    }

    // Update border color to match selected service
    panel.style.borderColor = service.color;
    panel.style.borderWidth = '2px';

    const html = `
      <div class="flex items-start mb-4">
        <div class="flex items-center space-x-3">
          <div class="w-12 h-12 rounded-xl flex items-center justify-center text-2xl service-icon-box" data-color="${service.color}">
            ${service.icon}
          </div>
          <div>
            <h3 class="text-xl font-bold text-gray-900">${service.name}</h3>
            <span class="text-xs font-medium text-gray-600 uppercase">${service.shortName}</span>
          </div>
        </div>
      </div>

      <p class="text-gray-700 mb-4 leading-relaxed">${service.description}</p>

      <div class="mb-4">
        <h4 class="text-sm font-semibold text-gray-900 mb-2 uppercase">Key Features</h4>
        <ul class="space-y-2" id="service-features-list">
          ${service.details.map(detail => `
            <li class="flex items-start text-sm text-gray-700">
              <svg class="w-4 h-4 mr-2 mt-0.5 flex-shrink-0 service-check-icon" data-color="${service.color}" fill="currentColor" viewBox="0 0 20 20">
                <path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zm3.707-9.293a1 1 0 00-1.414-1.414L9 10.586 7.707 9.293a1 1 0 00-1.414 1.414l2 2a1 1 0 001.414 0l4-4z"/>
              </svg>
              <span>${detail}</span>
            </li>
          `).join('')}
        </ul>
      </div>

      <div class="text-xs rounded px-3 py-2 bg-opacity-20 service-promise-badge" data-color="${service.color}">
        <strong class="service-promise-text" data-color="${service.color}">Early Promise:</strong>
        <span class="text-gray-800">${service.promise}</span>
      </div>
    `;

    panel.innerHTML = html;

    // Apply styles via JavaScript (CSP-compliant)
    const iconBox = panel.querySelector('.service-icon-box');
    if (iconBox) {
      const color = iconBox.getAttribute('data-color');
      iconBox.style.background = `linear-gradient(135deg, ${color} 0%, ${color}dd 100%)`;
    }

    // Style all check icons
    const checkIcons = panel.querySelectorAll('.service-check-icon');
    checkIcons.forEach(icon => {
      const color = icon.getAttribute('data-color');
      icon.style.color = color;
    });

    // Style promise badge
    const promiseBadge = panel.querySelector('.service-promise-badge');
    if (promiseBadge) {
      const color = promiseBadge.getAttribute('data-color');
      promiseBadge.style.backgroundColor = color;
    }

    // Style promise text
    const promiseText = panel.querySelector('.service-promise-text');
    if (promiseText) {
      const color = promiseText.getAttribute('data-color');
      promiseText.style.color = color;
    }
  }

  addKeyboardNavigation(nodes) {
    nodes.forEach((node, index) => {
      node.setAttribute('tabindex', '0');
      node.setAttribute('role', 'button');

      node.addEventListener('keydown', (e) => {
        if (e.key === 'Enter' || e.key === ' ') {
          e.preventDefault();
          const serviceId = node.getAttribute('data-service');
          this.showServiceDetails(serviceId);
        }
      });
    });
  }
}

if (typeof window !== 'undefined') {
  window.interactiveDiagram = new InteractiveDiagram();
}

if (typeof module !== 'undefined' && module.exports) {
  module.exports = InteractiveDiagram;
}