/**
 * Research Papers Modal Component
 * Displays curated research papers grouped by recency when triggered
 * from the homepage hero "Read the Research" button.
 */

class ResearchPapersModal {
  constructor() {
    this.isOpen = false;
    this.papers = [
      {
        group: 'Recent Papers',
        items: [
          {
            code: 'STO-RES-0010',
            title: 'Taonga-Centred Steering Governance',
            subtitle: 'Polycentric Authority for Sovereign Small Language Models',
            description: 'Proposes polycentric governance replacing platform hierarchy with co-equal steering authorities, drawing on te ao M\u0101ori concepts.',
            date: 'February 2026',
            status: 'Draft',
            href: '/docs.html?doc=taonga-centred-steering-governance-polycentric-authority-for-sovereign-small-language-models'
          },
          {
            code: 'STO-RES-0009',
            title: 'Steering Vectors and Mechanical Bias',
            subtitle: 'Inference-Time Debiasing for Sovereign Small Language Models',
            description: 'Investigates whether LLM biases operate at a sub-reasoning level and how sovereign SLM deployments enable inference-time debiasing.',
            date: 'February 2026',
            status: 'v1.1',
            href: '/docs.html?doc=steering-vectors-mechanical-bias-sovereign-ai'
          }
        ]
      },
      {
        group: 'Foundational Papers',
        items: [
          {
            code: 'STO-INN-0003',
            title: 'Architectural Alignment',
            subtitle: 'Interrupting Neural Reasoning Through Constitutional Inference Gating',
            description: 'The core Tractatus paper presenting architectural alignment as a formal specification for interrupted neural reasoning. Available in three editions.',
            date: 'January 2026',
            status: 'v2.1 \u2014 3 editions',
            href: '/architectural-alignment.html'
          }
        ]
      }
    ];
    this.init();
  }

  init() {
    this.renderModal();
    this.attachEventListeners();
  }

  renderModal() {
    const papersHTML = this.papers.map(group => `
      <div class="mb-6 last:mb-0">
        <h3 class="text-sm font-semibold text-gray-500 uppercase tracking-wider mb-3">${group.group}</h3>
        <div class="space-y-3">
          ${group.items.map(paper => `
            <a href="${paper.href}"
               class="block border border-gray-200 rounded-lg p-4 hover:border-blue-300 hover:bg-blue-50/50 transition-colors group">
              <div class="flex items-start justify-between gap-3 mb-1">
                <h4 class="font-semibold text-gray-900 group-hover:text-blue-700 transition-colors">${paper.title}</h4>
                <span class="shrink-0 text-xs font-mono bg-gray-100 text-gray-600 px-2 py-0.5 rounded">${paper.code}</span>
              </div>
              <p class="text-sm text-gray-600 mb-2">${paper.subtitle}</p>
              <p class="text-sm text-gray-500 mb-2">${paper.description}</p>
              <div class="flex items-center gap-3 text-xs text-gray-400">
                <span>${paper.date}</span>
                <span class="inline-block bg-gray-100 text-gray-600 px-2 py-0.5 rounded">${paper.status}</span>
              </div>
            </a>
          `).join('')}
        </div>
      </div>
    `).join('');

    const modalHTML = `
      <div id="research-papers-modal" class="hidden fixed inset-0 z-50" role="dialog" aria-modal="true" aria-labelledby="research-papers-title">
        <div id="research-papers-backdrop" class="absolute inset-0 bg-gray-900/60 backdrop-blur-sm"></div>

        <div class="absolute inset-0 flex items-center justify-center p-4">
          <div class="bg-white rounded-xl shadow-2xl w-full max-w-2xl relative flex flex-col max-h-[90vh]">
            <button id="research-papers-close"
                    class="absolute top-4 right-4 text-gray-400 hover:text-gray-600 transition-colors z-10"
                    aria-label="Close research papers modal">
              <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="M6 18L18 6M6 6l12 12" />
              </svg>
            </button>

            <div class="p-6 pb-0">
              <div class="flex items-center gap-3 mb-1">
                <div class="inline-flex items-center justify-center w-10 h-10 bg-blue-100 rounded-lg">
                  <svg class="w-5 h-5 text-blue-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 6.253v13m0-13C10.832 5.477 9.246 5 7.5 5S4.168 5.477 3 6.253v13C4.168 18.477 5.754 18 7.5 18s3.332.477 4.5 1.253m0-13C13.168 5.477 14.754 5 16.5 5c1.747 0 3.332.477 4.5 1.253v13C19.832 18.477 18.247 18 16.5 18c-1.746 0-3.332.477-4.5 1.253" />
                  </svg>
                </div>
                <h2 id="research-papers-title" class="text-xl font-bold text-gray-900">Research Papers</h2>
              </div>
              <p class="text-sm text-gray-500 mb-4 ml-13">Published research from the Tractatus project</p>
            </div>

            <div class="overflow-y-auto px-6 pb-2 flex-1">
              ${papersHTML}
            </div>

            <div class="border-t border-gray-100 px-6 py-4">
              <a href="/docs.html"
                 class="flex items-center justify-center gap-2 text-sm font-medium text-blue-600 hover:text-blue-700 transition-colors">
                Browse All Documentation
                <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                  <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7" />
                </svg>
              </a>
            </div>
          </div>
        </div>
      </div>
    `;

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

  attachEventListeners() {
    const backdrop = document.getElementById('research-papers-backdrop');
    const closeBtn = document.getElementById('research-papers-close');

    backdrop.addEventListener('click', () => this.close());
    closeBtn.addEventListener('click', () => this.close());

    document.addEventListener('keydown', (e) => {
      if (e.key === 'Escape' && this.isOpen) {
        this.close();
      }
    });

    document.addEventListener('click', (e) => {
      if (e.target.closest('[data-research-papers-trigger]')) {
        e.preventDefault();
        this.open();
      }
    });
  }

  open() {
    const modal = document.getElementById('research-papers-modal');
    modal.classList.remove('hidden');
    this.isOpen = true;
    document.body.classList.add('overflow-hidden');
  }

  close() {
    const modal = document.getElementById('research-papers-modal');
    modal.classList.add('hidden');
    this.isOpen = false;
    document.body.classList.remove('overflow-hidden');
  }
}

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