/**
 * Tractatus Framework - Governed Feedback Component
 * Demonstrates Agent Lightning + Tractatus governance in action
 *
 * Features:
 * - Floating Action Button (FAB) for quick access
 * - Modal dialog for feedback submission
 * - Mobile-optimized bottom sheet
 * - Real-time governance pathway classification
 * - Integration with BoundaryEnforcer, PluralisticDeliberator, CrossReferenceValidator
 */

class TractausFeedback {
  constructor() {
    this.isOpen = false;
    this.isMobile = window.matchMedia('(max-width: 768px)').matches;
    this.selectedType = null;
    this.csrfToken = null;

    this.init();
  }

  async init() {
    // Get CSRF token
    await this.fetchCsrfToken();

    // Render components
    this.renderFAB();
    this.renderModal();

    // Attach event listeners
    this.attachEventListeners();

    // Listen for window resize
    window.addEventListener('resize', () => {
      this.isMobile = window.matchMedia('(max-width: 768px)').matches;
    });

    // Listen for external open feedback requests (from navbar, etc.)
    window.addEventListener('openFeedbackModal', () => {
      this.openModal();
    });
  }

  async fetchCsrfToken() {
    try {
      const response = await fetch('/api/csrf-token');
      const data = await response.json();
      this.csrfToken = data.csrfToken;
    } catch (error) {
      console.error('[Feedback] Failed to fetch CSRF token:', error);
    }
  }

  /**
   * Render Floating Action Button (FAB)
   * Omnipresent on all pages for quick feedback access
   */
  renderFAB() {
    const fabHTML = `
      <button id="feedback-fab"
              class="fixed bottom-6 right-6 z-40 bg-gradient-to-r from-blue-600 to-blue-700 text-white p-4 rounded-full shadow-lg hover:shadow-xl hover:scale-110 transition-all duration-200 group flex items-center gap-2"
              aria-label="Give Feedback"
              title="Give Feedback">
        <svg class="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
          <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M7 8h10M7 12h4m1 8l-4-4H5a2 2 0 01-2-2V6a2 2 0 012-2h14a2 2 0 012 2v8a2 2 0 01-2 2h-3l-4 4z" />
        </svg>
        <span class="max-w-0 overflow-hidden group-hover:max-w-xs transition-all duration-300 whitespace-nowrap font-semibold">
          Feedback
        </span>
      </button>
    `;

    document.body.insertAdjacentHTML('beforeend', fabHTML);
  }

  /**
   * Render Feedback Modal/Bottom Sheet
   * Adapts to mobile (bottom sheet) vs desktop (modal)
   */
  renderModal() {
    const modalHTML = `
      <!-- Feedback Modal/Bottom Sheet -->
      <div id="feedback-modal" class="hidden fixed inset-0 z-50" role="dialog" aria-modal="true" aria-labelledby="feedback-modal-title">
        <!-- Backdrop -->
        <div id="feedback-backdrop" class="absolute inset-0 bg-gray-900/60 backdrop-blur-sm transition-opacity"></div>

        <!-- Modal/Sheet Container -->
        <div id="feedback-container" class="absolute md:inset-0 md:flex md:items-center md:justify-center">
          <!-- Modal Content -->
          <div id="feedback-panel"
               class="bg-white md:rounded-xl shadow-2xl w-full md:max-w-2xl md:mx-4
                      fixed bottom-0 left-0 right-0 md:relative
                      max-h-[85vh] md:max-h-[90vh] overflow-hidden
                      transform transition-transform duration-300 ease-out translate-y-full md:translate-y-0">

            <!-- Header -->
            <div class="flex justify-between items-center px-6 py-4 border-b border-gray-200 bg-gradient-to-r from-blue-50 to-blue-100">
              <div>
                <h2 id="feedback-modal-title" class="text-xl font-bold text-gray-900">Governed Feedback System</h2>
                <p class="text-sm text-gray-600 mt-0.5">Powered by Tractatus + Agent Lightning</p>
              </div>
              <button id="feedback-close-btn" class="text-gray-500 hover:text-gray-700 p-2 rounded-lg hover:bg-white/50 transition" aria-label="Close">
                <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                  <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />
                </svg>
              </button>
            </div>

            <!-- Content (scrollable) -->
            <div class="overflow-y-auto max-h-[calc(85vh-120px)] md:max-h-[calc(90vh-180px)]">
              <!-- Step 1: Type Selection -->
              <div id="feedback-step-1" class="p-6">
                <label class="block text-sm font-semibold text-gray-900 mb-3">What type of feedback do you have?</label>
                <div class="grid grid-cols-1 sm:grid-cols-2 gap-3">
                  <button type="button" data-type="technical_question" class="feedback-type-btn p-4 border-2 border-gray-200 rounded-lg hover:border-blue-500 hover:bg-blue-50 transition text-left group">
                    <div class="flex items-start gap-3">
                      <span class="text-2xl">🔧</span>
                      <div>
                        <div class="font-semibold text-gray-900 group-hover:text-blue-700">Technical Question</div>
                        <div class="text-xs text-gray-500 mt-1">Installation, usage, bugs</div>
                        <div class="text-xs text-blue-600 mt-1.5 font-medium">→ AI responds autonomously</div>
                      </div>
                    </div>
                  </button>

                  <button type="button" data-type="feature" class="feedback-type-btn p-4 border-2 border-gray-200 rounded-lg hover:border-blue-500 hover:bg-blue-50 transition text-left group">
                    <div class="flex items-start gap-3">
                      <span class="text-2xl">💡</span>
                      <div>
                        <div class="font-semibold text-gray-900 group-hover:text-blue-700">Feature Request</div>
                        <div class="text-xs text-gray-500 mt-1">Suggest new capabilities</div>
                        <div class="text-xs text-amber-600 mt-1.5 font-medium">→ Requires deliberation</div>
                      </div>
                    </div>
                  </button>

                  <button type="button" data-type="research" class="feedback-type-btn p-4 border-2 border-gray-200 rounded-lg hover:border-blue-500 hover:bg-blue-50 transition text-left group">
                    <div class="flex items-start gap-3">
                      <span class="text-2xl">🔬</span>
                      <div>
                        <div class="font-semibold text-gray-900 group-hover:text-blue-700">Research Collaboration</div>
                        <div class="text-xs text-gray-500 mt-1">Co-authorship, joint research</div>
                        <div class="text-xs text-amber-600 mt-1.5 font-medium">→ Requires deliberation</div>
                      </div>
                    </div>
                  </button>

                  <button type="button" data-type="commercial" class="feedback-type-btn p-4 border-2 border-gray-200 rounded-lg hover:border-blue-500 hover:bg-blue-50 transition text-left group">
                    <div class="flex items-start gap-3">
                      <span class="text-2xl">💼</span>
                      <div>
                        <div class="font-semibold text-gray-900 group-hover:text-blue-700">Commercial Inquiry</div>
                        <div class="text-xs text-gray-500 mt-1">Licensing, consulting, partnerships</div>
                        <div class="text-xs text-red-600 mt-1.5 font-medium">→ Human review required</div>
                      </div>
                    </div>
                  </button>

                  <button type="button" data-type="bug" class="feedback-type-btn p-4 border-2 border-gray-200 rounded-lg hover:border-blue-500 hover:bg-blue-50 transition text-left group">
                    <div class="flex items-start gap-3">
                      <span class="text-2xl">🐛</span>
                      <div>
                        <div class="font-semibold text-gray-900 group-hover:text-blue-700">Bug Report</div>
                        <div class="text-xs text-gray-500 mt-1">Something isn't working</div>
                        <div class="text-xs text-blue-600 mt-1.5 font-medium">→ AI responds autonomously</div>
                      </div>
                    </div>
                  </button>

                  <button type="button" data-type="general" class="feedback-type-btn p-4 border-2 border-gray-200 rounded-lg hover:border-blue-500 hover:bg-blue-50 transition text-left group">
                    <div class="flex items-start gap-3">
                      <span class="text-2xl">💬</span>
                      <div>
                        <div class="font-semibold text-gray-900 group-hover:text-blue-700">General Comment</div>
                        <div class="text-xs text-gray-500 mt-1">Other feedback</div>
                        <div class="text-xs text-blue-600 mt-1.5 font-medium">→ AI responds autonomously</div>
                      </div>
                    </div>
                  </button>
                </div>

                <!-- Governance Info -->
                <div class="mt-6 p-4 bg-blue-50 border border-blue-200 rounded-lg">
                  <div class="flex items-start gap-3">
                    <svg class="w-5 h-5 text-blue-600 mt-0.5 flex-shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                      <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />
                    </svg>
                    <div class="text-sm">
                      <p class="font-semibold text-blue-900">How this works</p>
                      <p class="text-blue-700 mt-1">Your feedback is automatically classified by our <strong>BoundaryEnforcer</strong> to determine the appropriate response pathway. This ensures you get the right type of response while maintaining governance.</p>
                    </div>
                  </div>
                </div>
              </div>

              <!-- Step 2: Feedback Form -->
              <div id="feedback-step-2" class="hidden p-6">
                <form id="feedback-form">
                  <!-- Pathway Indicator -->
                  <div id="pathway-indicator" class="mb-6 p-4 rounded-lg border-2"></div>

                  <!-- Content -->
                  <div class="mb-4">
                    <label for="feedback-content" class="block text-sm font-semibold text-gray-900 mb-2">Your Feedback</label>
                    <textarea id="feedback-content"
                              name="content"
                              rows="6"
                              class="w-full px-4 py-3 border border-gray-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-blue-500 transition"
                              placeholder="Describe your feedback in detail..."
                              required></textarea>
                    <p class="text-xs text-gray-500 mt-1">Be specific to help us provide the best response.</p>
                  </div>

                  <!-- Optional Contact Info -->
                  <div class="mb-4">
                    <label class="block text-sm font-semibold text-gray-900 mb-2">Contact Information (Optional)</label>
                    <div class="grid grid-cols-1 sm:grid-cols-2 gap-3">
                      <input type="text"
                             id="feedback-name"
                             name="name"
                             class="px-4 py-2.5 border border-gray-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-blue-500 transition"
                             placeholder="Your name">
                      <input type="email"
                             id="feedback-email"
                             name="email"
                             class="px-4 py-2.5 border border-gray-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-blue-500 transition"
                             placeholder="your@email.com">
                    </div>
                    <p class="text-xs text-gray-500 mt-2">Provide your email if you'd like a response. We won't share your information.</p>
                  </div>

                  <!-- Governance Constraints Display -->
                  <div id="constraints-display" class="mb-6 p-4 bg-gray-50 border border-gray-200 rounded-lg">
                    <p class="text-xs font-semibold text-gray-700 mb-2">Governance Constraints:</p>
                    <ul id="constraints-list" class="text-xs text-gray-600 space-y-1"></ul>
                  </div>

                  <!-- Actions -->
                  <div class="flex gap-3">
                    <button type="button" id="feedback-back-btn" class="px-4 py-2.5 border border-gray-300 text-gray-700 rounded-lg hover:bg-gray-50 transition font-medium">
                      ← Back
                    </button>
                    <button type="submit" id="feedback-submit-btn" class="flex-1 px-6 py-2.5 bg-gradient-to-r from-blue-600 to-blue-700 text-white rounded-lg hover:shadow-lg transition font-semibold">
                      Submit Feedback
                    </button>
                  </div>
                </form>
              </div>

              <!-- Step 3: Confirmation -->
              <div id="feedback-step-3" class="hidden p-6">
                <div class="text-center py-8">
                  <div class="w-16 h-16 bg-green-100 rounded-full flex items-center justify-center mx-auto mb-4">
                    <svg class="w-8 h-8 text-green-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                      <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 13l4 4L19 7" />
                    </svg>
                  </div>
                  <h3 class="text-xl font-bold text-gray-900 mb-2">Feedback Received!</h3>
                  <p id="confirmation-message" class="text-gray-600 mb-4"></p>

                  <!-- Tracking Info -->
                  <div class="inline-block bg-gray-50 border border-gray-200 rounded-lg px-4 py-3 mb-6">
                    <p class="text-xs text-gray-500 mb-1">Tracking ID:</p>
                    <code id="tracking-id" class="text-sm font-mono text-blue-600"></code>
                  </div>

                  <!-- Governance Summary -->
                  <div id="governance-summary" class="bg-blue-50 border border-blue-200 rounded-lg p-4 text-left mb-6"></div>

                  <button id="feedback-done-btn" class="px-6 py-2.5 bg-blue-600 text-white rounded-lg hover:bg-blue-700 transition font-semibold">
                    Done
                  </button>
                </div>
              </div>
            </div>

          </div>
        </div>
      </div>
    `;

    document.body.insertAdjacentHTML('beforeend', modalHTML);
  }

  /**
   * Attach all event listeners
   */
  attachEventListeners() {
    // FAB click - open modal
    const fab = document.getElementById('feedback-fab');
    if (fab) {
      fab.addEventListener('click', () => this.openModal());
    }

    // Close buttons
    const closeBtn = document.getElementById('feedback-close-btn');
    const backdrop = document.getElementById('feedback-backdrop');
    if (closeBtn) closeBtn.addEventListener('click', () => this.closeModal());
    if (backdrop) backdrop.addEventListener('click', () => this.closeModal());

    // Type selection buttons
    const typeButtons = document.querySelectorAll('.feedback-type-btn');
    typeButtons.forEach(btn => {
      btn.addEventListener('click', () => {
        this.selectedType = btn.getAttribute('data-type');
        this.showStep2();
      });
    });

    // Back button
    const backBtn = document.getElementById('feedback-back-btn');
    if (backBtn) {
      backBtn.addEventListener('click', () => this.showStep1());
    }

    // Form submission
    const form = document.getElementById('feedback-form');
    if (form) {
      form.addEventListener('submit', (e) => this.handleSubmit(e));
    }

    // Done button
    const doneBtn = document.getElementById('feedback-done-btn');
    if (doneBtn) {
      doneBtn.addEventListener('click', () => this.closeModal());
    }
  }

  /**
   * Open feedback modal
   */
  openModal() {
    this.isOpen = true;
    const modal = document.getElementById('feedback-modal');
    const panel = document.getElementById('feedback-panel');

    modal.classList.remove('hidden');

    // Animate in
    setTimeout(() => {
      panel.classList.remove('translate-y-full');
      panel.classList.add('translate-y-0');
    }, 10);

    // Prevent body scroll
    document.body.style.overflow = 'hidden';

    // Reset to step 1
    this.showStep1();
  }

  /**
   * Close feedback modal
   */
  closeModal() {
    this.isOpen = false;
    const modal = document.getElementById('feedback-modal');
    const panel = document.getElementById('feedback-panel');

    // Animate out
    panel.classList.remove('translate-y-0');
    panel.classList.add('translate-y-full');

    setTimeout(() => {
      modal.classList.add('hidden');
    }, 300);

    // Restore body scroll
    document.body.style.overflow = '';

    // Reset form
    this.resetForm();
  }

  /**
   * Show step 1 (type selection)
   */
  showStep1() {
    document.getElementById('feedback-step-1').classList.remove('hidden');
    document.getElementById('feedback-step-2').classList.add('hidden');
    document.getElementById('feedback-step-3').classList.add('hidden');
  }

  /**
   * Show step 2 (feedback form)
   */
  showStep2() {
    document.getElementById('feedback-step-1').classList.add('hidden');
    document.getElementById('feedback-step-2').classList.remove('hidden');
    document.getElementById('feedback-step-3').classList.add('hidden');

    // Update pathway indicator based on type
    this.updatePathwayIndicator();
  }

  /**
   * Show step 3 (confirmation)
   */
  showStep3(data) {
    document.getElementById('feedback-step-1').classList.add('hidden');
    document.getElementById('feedback-step-2').classList.add('hidden');
    document.getElementById('feedback-step-3').classList.remove('hidden');

    // Display confirmation message
    const confirmationMessage = document.getElementById('confirmation-message');
    confirmationMessage.textContent = data.message;

    // Display tracking ID
    const trackingId = document.getElementById('tracking-id');
    trackingId.textContent = data.feedbackId;

    // Display governance summary
    this.displayGovernanceSummary(data);
  }

  /**
   * Update pathway indicator based on selected type
   */
  updatePathwayIndicator() {
    const indicator = document.getElementById('pathway-indicator');
    const constraintsList = document.getElementById('constraints-list');

    const pathwayInfo = {
      technical_question: {
        pathway: 'Autonomous',
        color: 'blue',
        icon: '🤖',
        description: 'AI will respond autonomously with technical information',
        constraints: ['cite_documentation', 'no_financial_commitments', 'no_legal_advice', 'accurate_only']
      },
      bug: {
        pathway: 'Autonomous',
        color: 'blue',
        icon: '🤖',
        description: 'AI will respond autonomously with troubleshooting guidance',
        constraints: ['cite_documentation', 'no_financial_commitments', 'accurate_only']
      },
      general: {
        pathway: 'Autonomous',
        color: 'blue',
        icon: '🤖',
        description: 'AI will respond autonomously with general information',
        constraints: ['cite_documentation', 'no_financial_commitments', 'no_legal_advice', 'stay_on_topic']
      },
      feature: {
        pathway: 'Deliberation',
        color: 'amber',
        icon: '⚖️',
        description: 'Requires multi-stakeholder deliberation before response',
        constraints: ['align_with_roadmap', 'assess_scope', 'community_benefit']
      },
      research: {
        pathway: 'Deliberation',
        color: 'amber',
        icon: '⚖️',
        description: 'Requires stakeholder consultation (maintainer, research lead, community)',
        constraints: ['check_availability', 'align_with_research_gaps', 'assess_mutual_benefit']
      },
      commercial: {
        pathway: 'Human Mandatory',
        color: 'red',
        icon: '👤',
        description: 'Requires personal human review and response',
        constraints: ['no_financial_commitments', 'no_pricing_discussion', 'refer_to_human']
      }
    };

    const info = pathwayInfo[this.selectedType];

    indicator.className = `mb-6 p-4 rounded-lg border-2 border-${info.color}-200 bg-${info.color}-50`;
    indicator.innerHTML = `
      <div class="flex items-start gap-3">
        <span class="text-2xl">${info.icon}</span>
        <div>
          <p class="font-semibold text-${info.color}-900">Pathway: ${info.pathway}</p>
          <p class="text-sm text-${info.color}-700 mt-1">${info.description}</p>
        </div>
      </div>
    `;

    // Display constraints
    constraintsList.innerHTML = info.constraints.map(c => `
      <li class="flex items-center gap-2">
        <svg class="w-3 h-3 text-gray-500" fill="currentColor" viewBox="0 0 20 20">
          <path fill-rule="evenodd" d="M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z" clip-rule="evenodd"/>
        </svg>
        ${this.formatConstraint(c)}
      </li>
    `).join('');
  }

  /**
   * Format constraint for display
   */
  formatConstraint(constraint) {
    const labels = {
      cite_documentation: 'Must cite documentation',
      no_financial_commitments: 'No financial commitments',
      no_legal_advice: 'No legal advice',
      accurate_only: 'Factually accurate only',
      helpful_tone: 'Helpful, respectful tone',
      stay_on_topic: 'Stay on topic',
      align_with_roadmap: 'Align with roadmap',
      assess_scope: 'Assess feasibility',
      community_benefit: 'Community benefit assessment',
      check_availability: 'Check maintainer availability',
      align_with_research_gaps: 'Align with research priorities',
      assess_mutual_benefit: 'Mutual benefit assessment',
      no_pricing_discussion: 'No pricing discussion',
      refer_to_human: 'Escalate to human'
    };

    return labels[constraint] || constraint;
  }

  /**
   * Handle form submission
   */
  async handleSubmit(e) {
    e.preventDefault();

    const submitBtn = document.getElementById('feedback-submit-btn');
    submitBtn.disabled = true;
    submitBtn.textContent = 'Submitting...';

    try {
      const formData = {
        type: this.selectedType,
        content: document.getElementById('feedback-content').value,
        name: document.getElementById('feedback-name').value || null,
        email: document.getElementById('feedback-email').value || null
      };

      const response = await fetch('/api/feedback/submit', {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
          'X-CSRF-Token': this.csrfToken
        },
        credentials: 'include',
        body: JSON.stringify(formData)
      });

      const data = await response.json();

      if (data.success) {
        this.showStep3(data);
      } else {
        alert('Error: ' + (data.message || 'Failed to submit feedback'));
        submitBtn.disabled = false;
        submitBtn.textContent = 'Submit Feedback';
      }
    } catch (error) {
      console.error('[Feedback] Submission error:', error);
      alert('An error occurred. Please try again.');
      submitBtn.disabled = false;
      submitBtn.textContent = 'Submit Feedback';
    }
  }

  /**
   * Display governance summary after submission
   */
  displayGovernanceSummary(data) {
    const summary = document.getElementById('governance-summary');

    const pathwayIcons = {
      autonomous: '🤖',
      deliberation: '⚖️',
      human_mandatory: '👤'
    };

    summary.innerHTML = `
      <div class="text-sm">
        <p class="font-semibold text-blue-900 mb-3">Governance Summary</p>
        <div class="space-y-2 text-blue-700">
          <div class="flex items-center gap-2">
            <span class="text-lg">${pathwayIcons[data.pathway]}</span>
            <span><strong>Pathway:</strong> ${data.pathway.replace('_', ' ')}</span>
          </div>
          <div><strong>Classification:</strong> BoundaryEnforcer approved</div>
          <div><strong>Tracking:</strong> <code class="text-xs bg-white px-2 py-0.5 rounded">${data.feedbackId}</code></div>
          ${data.trackingUrl ? `<div class="mt-3 pt-3 border-t border-blue-200"><a href="${data.trackingUrl}" class="text-blue-600 hover:text-blue-800 underline text-xs">Track status →</a></div>` : ''}
        </div>
      </div>
    `;
  }

  /**
   * Reset form to initial state
   */
  resetForm() {
    this.selectedType = null;
    document.getElementById('feedback-form').reset();
    this.showStep1();
  }
}

// Auto-initialize when DOM is ready
if (document.readyState === 'loading') {
  document.addEventListener('DOMContentLoaded', () => new TractausFeedback());
} else {
  new TractausFeedback();
}