/**
 * External Communications Manager
 * Enhanced Blog Curation with Multi-Channel Content Generation
 */

// Publication targets (loaded from server)
let PUBLICATIONS = {};

// Get auth token
function getAuthToken() {
  return localStorage.getItem('admin_token');
}

// API call helper
async function apiCall(endpoint, options = {}) {
  const token = getAuthToken();
  const defaultOptions = {
    cache: 'no-store',  // Force fresh requests - prevent cached 500 errors
    headers: {
      'Content-Type': 'application/json',
      'Authorization': `Bearer ${token}`
    }
  };

  const response = await fetch(endpoint, { ...defaultOptions, ...options });

  if (response.status === 401) {
    localStorage.removeItem('admin_token');
    window.location.href = '/admin/login.html';
    throw new Error('Unauthorized');
  }

  return response;
}

// Load publication targets
async function loadPublicationTargets() {
  // For Phase 1, we define publications client-side
  // In Phase 2, this would fetch from /api/publications

  PUBLICATIONS = {
    letter: [
      { id: 'economist-letter', name: 'The Economist', rank: 1, words: '200-250', email: 'letters@economist.com', response: '2-7 days' },
      { id: 'ft-letter', name: 'Financial Times', rank: 2, words: '200-250', email: 'letters.editor@ft.com', response: '2-5 days' },
      { id: 'guardian-letter', name: 'The Guardian', rank: 4, words: '200-250', email: 'letters@theguardian.com', response: '2-5 days' },
      { id: 'nyt-letter', name: 'New York Times', rank: 6, words: '150-200', email: 'letters@nytimes.com', response: '2-7 days' },
      { id: 'wsj-letter', name: 'Wall Street Journal', rank: 11, words: '200-250', email: 'wsj.ltrs@wsj.com', response: '2-5 days' },
      { id: 'der-spiegel-letter', name: 'Der Spiegel (German)', rank: 16, words: '200-300', email: 'leserbriefe@spiegel.de', response: '5-10 days', language: 'de' },
      { id: 'latimes-letter', name: 'Los Angeles Times', rank: 17, words: '100-150', email: 'letters@latimes.com', response: '2-5 days' },
      { id: 'die-presse-letter', name: 'Die Presse (Austrian)', rank: 20, words: '150-200', email: 'leserbriefe@diepresse.com', response: '3-7 days', language: 'de' }
    ],
    oped: [
      { id: 'mit-tech-review-oped', name: 'MIT Technology Review', rank: 3, words: '800-1500', email: 'editors@technologyreview.com', response: '3-6 weeks', pitch: true },
      { id: 'ieee-spectrum-oped', name: 'IEEE Spectrum', rank: 5, words: '1000-2000', method: 'form', response: '4-8 weeks' },
      { id: 'nyt-oped', name: 'New York Times', rank: 6, words: '800-1200', email: 'oped@nytimes.com', response: '2-4 weeks', pitch: true },
      { id: 'washpost-oped', name: 'Washington Post', rank: 7, words: '750-800', method: 'form', response: '2-4 weeks' },
      { id: 'caixin-global-oped', name: 'Caixin Global (China)', rank: 8, words: '800-1500', email: 'english@caixin.com', response: '2-4 weeks', pitch: true },
      { id: 'hindu-open-page', name: 'The Hindu (India)', rank: 9, words: '800-1200', email: 'openpage@thehindu.co.in', response: '1-3 weeks' },
      { id: 'le-monde-oped', name: 'Le Monde (French)', rank: 10, words: '900-1200', method: 'form', response: '2-4 weeks', language: 'fr' },
      { id: 'wired-oped', name: 'Wired', rank: 12, words: '1000-1500', method: 'form', response: '3-6 weeks', pitch: true },
      { id: 'mail-guardian-oped', name: 'Mail & Guardian (South Africa)', rank: 13, words: '800-1200', method: 'website', response: '1-2 weeks' },
      { id: 'venturebeat-oped', name: 'VentureBeat', rank: 16, words: '800-1500', method: 'form', response: '1-2 weeks' },
      { id: 'folha-oped', name: 'Folha de S.Paulo (Brazil)', rank: 16, words: '600-900', method: 'form', response: '1-2 weeks', note: 'English edition available' }
    ],
    social: [
      { id: 'linkedin', name: 'LinkedIn Articles', rank: 14, words: '1000-2000', method: 'self-publish', response: 'immediate' },
      { id: 'daily-blog-nz', name: 'The Daily Blog (NZ)', rank: 15, words: '800-1200', email: 'thedailyblog@gmail.com', response: '1-3 days' },
      { id: 'substack-essay', name: 'Substack', rank: 18, words: '1500-2500', method: 'self-publish', response: 'immediate' },
      { id: 'medium-essay', name: 'Medium', rank: 19, words: '1200-2500', method: 'self-publish', response: 'immediate' }
    ]
  };
}

// Handle content type selection
function setupContentTypeHandlers() {
  const contentTypeRadios = document.querySelectorAll('input[name="contentType"]');
  const publicationSection = document.getElementById('publication-section');
  const articleRefSection = document.getElementById('article-reference-section');
  const topicSection = document.getElementById('topic-section');
  const topicStepLabel = document.getElementById('topic-step-label');
  const contextStepLabel = document.getElementById('context-step-label');

  contentTypeRadios.forEach(radio => {
    radio.addEventListener('change', (e) => {
      const type = e.target.value;

      // Update UI based on content type
      if (type === 'blog') {
        // Blog: no publication selector, no article ref
        publicationSection.classList.add('hidden');
        articleRefSection.classList.add('hidden');
        topicSection.classList.remove('hidden');
        topicStepLabel.textContent = 'Step 2';
        contextStepLabel.textContent = 'Step 3';
      } else if (type === 'letter') {
        // Letter: show publication + article ref
        publicationSection.classList.remove('hidden');
        articleRefSection.classList.remove('hidden');
        topicSection.classList.add('hidden');
        contextStepLabel.textContent = 'Step 4';
        populatePublications('letter');
      } else if (type === 'oped') {
        // Op-Ed: show publication, no article ref
        publicationSection.classList.remove('hidden');
        articleRefSection.classList.add('hidden');
        topicSection.classList.remove('hidden');
        topicStepLabel.textContent = 'Step 3';
        contextStepLabel.textContent = 'Step 4';
        populatePublications('oped');
      } else if (type === 'social') {
        // Social: show publication (platforms), no article ref
        publicationSection.classList.remove('hidden');
        articleRefSection.classList.add('hidden');
        topicSection.classList.remove('hidden');
        topicStepLabel.textContent = 'Step 3';
        contextStepLabel.textContent = 'Step 4';
        populatePublications('social');
      }
    });
  });
}

// Populate publication dropdown based on type
function populatePublications(type) {
  const dropdown = document.getElementById('publication-target');
  dropdown.innerHTML = '<option value="">Select publication...</option>';

  const pubs = PUBLICATIONS[type] || [];

  pubs.sort((a, b) => a.rank - b.rank).forEach(pub => {
    const option = document.createElement('option');
    option.value = pub.id;
    option.textContent = `#${pub.rank} ${pub.name} (${pub.words} words)`;
    option.dataset.pubData = JSON.stringify(pub);
    dropdown.appendChild(option);
  });
}

// Handle publication selection
function setupPublicationHandler() {
  const dropdown = document.getElementById('publication-target');
  const infoBox = document.getElementById('publication-info');
  const wordCount = document.getElementById('pub-word-count');
  const submission = document.getElementById('pub-submission');
  const response = document.getElementById('pub-response');
  const suggestBtn = document.getElementById('suggest-topics-btn');
  const suggestionsDiv = document.getElementById('topic-suggestions');

  // Elements might not exist if we're on a different section
  if (!dropdown) {
    console.log('[External Communications] Publication dropdown not found - not in Generate section');
    return;
  }

  dropdown.addEventListener('change', (e) => {
    if (!e.target.value) {
      infoBox.classList.add('hidden');
      suggestBtn.classList.add('hidden');
      suggestionsDiv.classList.add('hidden');
      return;
    }

    const option = e.target.selectedOptions[0];
    const pub = JSON.parse(option.dataset.pubData);

    wordCount.textContent = `${pub.words} words${pub.pitch ? ' (pitch first)' : ''}`;

    if (pub.email) {
      submission.textContent = pub.email;
    } else if (pub.method === 'form') {
      submission.textContent = 'Via online form';
    } else if (pub.method === 'website') {
      submission.textContent = 'Via website contact';
    } else if (pub.method === 'self-publish') {
      submission.textContent = 'Self-publish platform';
    }

    response.textContent = pub.response;

    infoBox.classList.remove('hidden');

    // Show topic suggestions button for publications with readership profiles
    // Currently only economist-letter and nyt-oped have readership profiles
    const pubsWithProfiles = ['economist-letter', 'nyt-oped'];
    if (pubsWithProfiles.includes(pub.id)) {
      suggestBtn.classList.remove('hidden');
    } else {
      suggestBtn.classList.add('hidden');
    }

    // Clear previous suggestions
    suggestionsDiv.classList.add('hidden');
  });
}

// Setup publication-specific topic suggestions
function setupTopicSuggestions() {
  const suggestBtn = document.getElementById('suggest-topics-btn');
  const suggestText = document.getElementById('suggest-topics-text');
  const suggestLoader = document.getElementById('suggest-topics-loader');
  const suggestionsDiv = document.getElementById('topic-suggestions');
  const dropdown = document.getElementById('publication-target');

  suggestBtn.addEventListener('click', async () => {
    const publicationId = dropdown.value;
    if (!publicationId) return;

    // Show loading state
    suggestBtn.disabled = true;
    suggestText.classList.add('hidden');
    suggestLoader.classList.remove('hidden');
    suggestionsDiv.classList.add('hidden');

    try {
      const response = await apiCall('/api/blog/suggest-topics-for-publication', {
        method: 'POST',
        body: JSON.stringify({ publicationId })
      });

      if (!response.ok) {
        throw new Error('Failed to fetch topic suggestions');
      }

      const data = await response.json();
      displayTopicSuggestions(data, publicationId);

    } catch (error) {
      console.error('Error fetching topic suggestions:', error);
      suggestionsDiv.innerHTML = `
        <div class="p-4 bg-red-50 border border-red-200 rounded-md">
          <p class="text-sm text-red-800">Failed to generate topic suggestions. Please try again.</p>
        </div>
      `;
      suggestionsDiv.classList.remove('hidden');
    } finally {
      // Reset button state
      suggestBtn.disabled = false;
      suggestText.classList.remove('hidden');
      suggestLoader.classList.add('hidden');
    }
  });
}

// Display topic suggestions
function displayTopicSuggestions(data, publicationId) {
  const suggestionsDiv = document.getElementById('topic-suggestions');
  const { publication, autoFill, topics } = data;

  let html = `
    <div class="bg-gradient-to-r from-purple-50 to-indigo-50 border border-purple-200 rounded-lg p-4">
      <h4 class="text-sm font-semibold text-purple-900 mb-3">
        ✨ Topic Suggestions for ${publication.name}
      </h4>
      <p class="text-xs text-purple-700 mb-4">
        📊 Auto-fill: <span class="font-medium">Audience = ${autoFill.audience}</span>,
        <span class="font-medium">Tone = ${autoFill.tone}</span>,
        <span class="font-medium">Culture = ${autoFill.culture}</span>
      </p>
      <div class="space-y-3">
  `;

  topics.forEach((topic, index) => {
    html += `
      <div class="bg-white border border-purple-200 rounded-md p-4 hover:border-purple-400 hover:shadow-md transition-all cursor-pointer topic-suggestion"
           data-topic='${JSON.stringify(topic)}'
           data-autofill='${JSON.stringify(autoFill)}'>
        <h5 class="font-semibold text-gray-900 mb-2">${index + 1}. ${topic.title}</h5>
        <p class="text-sm text-gray-700 mb-2">${topic.rationale}</p>
        <div class="text-sm text-gray-600 mb-2">
          <strong>Hook:</strong> ${topic.hook}
        </div>
        <div class="text-xs text-gray-500">
          <strong>Key Points:</strong>
          <ul class="list-disc list-inside ml-2 mt-1">
            ${topic.keyPoints.map(point => `<li>${point}</li>`).join('')}
          </ul>
        </div>
        <button class="mt-3 px-3 py-1 bg-purple-600 text-white text-sm rounded hover:bg-purple-700 use-topic-btn">
          Use This Topic
        </button>
      </div>
    `;
  });

  html += `
      </div>
    </div>
  `;

  suggestionsDiv.innerHTML = html;
  suggestionsDiv.classList.remove('hidden');

  // Add click handlers to "Use This Topic" buttons
  suggestionsDiv.querySelectorAll('.use-topic-btn').forEach(btn => {
    btn.addEventListener('click', (e) => {
      e.stopPropagation();
      const card = e.target.closest('.topic-suggestion');
      const topic = JSON.parse(card.dataset.topic);
      const autoFill = JSON.parse(card.dataset.autofill);
      applyTopicSuggestion(topic, autoFill);
    });
  });
}

// Apply selected topic suggestion to form
function applyTopicSuggestion(topic, autoFill) {
  // Fill topic field
  document.getElementById('topic').value = topic.title;

  // Fill focus field with key points
  document.getElementById('focus').value = topic.keyPoints.join('; ');

  // Auto-fill audience, tone, culture
  document.getElementById('audience').value = autoFill.audience;
  document.getElementById('tone').value = autoFill.tone;
  document.getElementById('culture').value = autoFill.culture;

  // Scroll to topic section
  document.getElementById('topic-section').scrollIntoView({ behavior: 'smooth', block: 'nearest' });

  // Visual feedback
  const topicInput = document.getElementById('topic');
  topicInput.classList.add('ring-2', 'ring-purple-500');
  setTimeout(() => {
    topicInput.classList.remove('ring-2', 'ring-purple-500');
  }, 2000);

  // Show success message
  const suggestionsDiv = document.getElementById('topic-suggestions');
  const successMsg = document.createElement('div');
  successMsg.className = 'mt-3 p-3 bg-green-50 border border-green-200 rounded-md';
  successMsg.innerHTML = '<p class="text-sm text-green-800">✅ Topic applied! Fields auto-filled based on publication readership.</p>';
  suggestionsDiv.appendChild(successMsg);

  setTimeout(() => {
    successMsg.remove();
  }, 3000);
}

// Handle form submission
async function setupFormHandler() {
  const form = document.getElementById('draft-form');
  const submitBtn = document.getElementById('draft-btn');
  const status = document.getElementById('draft-status');

  form.addEventListener('submit', async (e) => {
    e.preventDefault();

    submitBtn.disabled = true;
    submitBtn.textContent = 'Generating...';
    status.textContent = 'Generating draft...';
    status.className = 'text-sm text-blue-600';

    try {
      const formData = new FormData(form);
      const contentType = formData.get('contentType');

      // Build request payload
      const payload = {
        contentType,
        audience: formData.get('audience'),
        tone: formData.get('tone') || 'standard',
        culture: formData.get('culture') || 'universal',
        language: formData.get('language') || 'en'
      };

      // Add type-specific data
      if (contentType === 'blog') {
        payload.topic = formData.get('topic');
        payload.focus = formData.get('focus');
      } else if (contentType === 'letter') {
        payload.publicationTarget = formData.get('publicationTarget');
        payload.articleReference = {
          title: formData.get('articleTitle'),
          date: formData.get('articleDate'),
          mainPoint: formData.get('mainPoint')
        };
      } else if (contentType === 'oped' || contentType === 'social') {
        payload.publicationTarget = formData.get('publicationTarget');
        payload.topic = formData.get('topic');
        payload.focus = formData.get('focus');
      }

      // Validate required fields
      if (!payload.audience) {
        throw new Error('Please select a target audience');
      }

      if (contentType === 'letter' && !payload.publicationTarget) {
        throw new Error('Please select a publication for your letter');
      }

      if (contentType === 'letter' && (!payload.articleReference.title || !payload.articleReference.mainPoint)) {
        throw new Error('Please provide article title and your main point for letter to editor');
      }

      if ((contentType === 'blog' || contentType === 'oped') && !payload.topic) {
        throw new Error('Please provide a topic');
      }

      // Submit to API
      const response = await apiCall('/api/blog/suggest-topics', {
        method: 'POST',
        body: JSON.stringify(payload)
      });

      if (!response.ok) {
        const error = await response.json();
        throw new Error(error.message || 'Failed to generate content');
      }

      const result = await response.json();

      status.textContent = '✓ Draft generated! Added to moderation queue.';
      status.className = 'text-sm text-green-600';

      // Reset form after short delay
      setTimeout(() => {
        form.reset();
        document.getElementById('publication-section').classList.add('hidden');
        document.getElementById('article-reference-section').classList.add('hidden');
        status.textContent = '';
        submitBtn.textContent = 'Generate Draft';
        submitBtn.disabled = false;
      }, 3000);

    } catch (error) {
      console.error('Error generating content:', error);
      status.textContent = `Error: ${error.message}`;
      status.className = 'text-sm text-red-600';
      submitBtn.textContent = 'Generate Draft';
      submitBtn.disabled = false;
    }
  });
}

// Initialize page
async function init() {
  await loadPublicationTargets();
  setupContentTypeHandlers();
  setupPublicationHandler();
  setupTopicSuggestions();
  setupFormHandler();
  console.log('[External Communications] Initialized with', Object.keys(PUBLICATIONS).length, 'content types');
}

// Run on page load
if (document.readyState === 'loading') {
  document.addEventListener('DOMContentLoaded', init);
} else {
  init();
}