// ============================================================================
// Miku Control Panel — Core Module
// Global variables, utility functions, tab switching, initialization, polling
// ============================================================================

// Global variables
let currentMood = 'neutral';
let voiceCallActive = false;
let voiceCallHistory = [];
let servers = [];
let evilMode = false;
let bipolarMode = false;
let selectedGPU = 'nvidia';
let chatConversationHistory = [];
let pfpCropper = null;
let albumEntries = [];
let albumSelectedId = null;
let albumChecked = new Set();
let albumCropper = null;
let albumOpen = false;
let activitiesData = null;
let activitiesOpen = false;
let activitiesSections = { normal: false, evil: false };
let activitiesEditing = {};
let activitiesEditCache = {};
let currentEditMemory = null;
let logsAutoScroll = true;
let notificationTimer = null;
let statusInterval = null;
let logsInterval = null;
let argsInterval = null;
let promptInterval = null;

// Mood emoji mapping
const MOOD_EMOJIS = {
    "asleep": "💤",
    "neutral": "",
    "bubbly": "🫧",
    "sleepy": "🌙",
    "curious": "👀",
    "shy": "👉👈",
    "serious": "👔",
    "excited": "✨",
    "melancholy": "🍷",
    "flirty": "🫦",
    "romantic": "💌",
    "irritated": "😒",
    "angry": "💢",
    "silly": "🪿"
};

// Evil mood emoji mapping
const EVIL_MOOD_EMOJIS = {
    "aggressive": "👿",
    "cunning": "🐍",
    "sarcastic": "😈",
    "evil_neutral": "",
    "bored": "🥱",
    "manic": "🤪",
    "jealous": "💚",
    "melancholic": "🌑",
    "playful_cruel": "🎭",
    "contemptuous": "👑"
};

// ============================================================================
// Utility functions
// ============================================================================

function showNotification(message, type = 'info') {
  const notification = document.getElementById('notification');
  notification.textContent = message;
  notification.style.display = 'block';
  notification.style.opacity = '0.95';

  if (type === 'error') {
    notification.style.backgroundColor = '#d32f2f';
  } else if (type === 'success') {
    notification.style.backgroundColor = '#2e7d32';
  } else {
    notification.style.backgroundColor = '#222';
  }

  if (notificationTimer) clearTimeout(notificationTimer);
  notificationTimer = setTimeout(() => {
    notification.style.opacity = '0';
    setTimeout(() => {
      notification.style.display = 'none';
      notificationTimer = null;
    }, 300);
  }, 3000);
}

async function apiCall(endpoint, method = 'GET', data = null) {
  try {
    const options = {
      method: method,
      headers: {
        'Content-Type': 'application/json',
      }
    };

    if (data) {
      options.body = JSON.stringify(data);
    }

    const response = await fetch(endpoint, options);
    const result = await response.json();

    if (response.ok) {
      return result;
    } else {
      throw new Error(result.message || 'API call failed');
    }
  } catch (error) {
    console.error('API call error:', error);
    showNotification(error.message, 'error');
    throw error;
  }
}

function escapeHtml(text) {
  if (!text) return '';
  const div = document.createElement('div');
  div.textContent = text;
  return div.innerHTML;
}

function escapeJsonForAttribute(obj) {
  return JSON.stringify(obj)
    .replace(/&/g, '&')
    .replace(/'/g, ''')
    .replace(/"/g, '"')
    .replace(/</g, '&lt;')
    .replace(/>/g, '&gt;');
}

// ============================================================================
// Tab switching
// ============================================================================

function switchTab(tabId) {
  document.querySelectorAll('.tab-content').forEach(tab => {
    tab.classList.remove('active');
  });

  document.querySelectorAll('.tab-button').forEach(button => {
    button.classList.remove('active');
  });

  document.getElementById(tabId).classList.add('active');

  const activeBtn = document.querySelector(`.tab-button[data-tab="${tabId}"]`);
  if (activeBtn) activeBtn.classList.add('active');

  localStorage.setItem('miku-active-tab', tabId);

  console.log(`🔄 Switched to ${tabId}`);
  if (tabId === 'tab1') {
    console.log('🔄 Refreshing figurine subscribers for Server Management tab');
    refreshFigurineSubscribers();
  }
  if (tabId === 'tab3') {
    loadStatus();
    loadLastPrompt();
  }
  if (tabId === 'tab6') {
    showTabLoading('tab6');
    loadAutonomousStats().finally(() => hideTabLoading('tab6'));
  }
  if (tabId === 'tab9') {
    console.log('🧠 Refreshing memory stats for Memories tab');
    showTabLoading('tab9');
    refreshMemoryStats().finally(() => hideTabLoading('tab9'));
  }
  if (tabId === 'tab10') {
    console.log('📱 Loading DM users for DM Management tab');
    showTabLoading('tab10');
    loadDMUsers().finally(() => hideTabLoading('tab10'));
  }
  if (tabId === 'tab11') {
    console.log('🖼️ Loading Profile Picture tab');
    loadPfpTab();
  }
}

function showTabLoading(tabId) {
  const tab = document.getElementById(tabId);
  if (!tab) return;
  if (tab.querySelector('.tab-loading-overlay')) return;
  const sections = tab.querySelectorAll('.section');
  const hasContent = Array.from(sections).some(s => s.querySelector('[id]')?.innerHTML?.trim());
  if (hasContent) return;
  const overlay = document.createElement('div');
  overlay.className = 'tab-loading-overlay';
  overlay.innerHTML = '<div class="spinner"></div> Loading...';
  tab.prepend(overlay);
}

function hideTabLoading(tabId) {
  const tab = document.getElementById(tabId);
  if (!tab) return;
  const overlay = tab.querySelector('.tab-loading-overlay');
  if (overlay) overlay.remove();
}

// ============================================================================
// Polling
// ============================================================================

function startPolling() {
  if (!statusInterval) statusInterval = setInterval(loadStatus, 10000);
  if (!logsInterval) logsInterval = setInterval(loadLogs, 5000);
  if (!argsInterval) argsInterval = setInterval(loadActiveArguments, 5000);
  if (!promptInterval) promptInterval = setInterval(loadPromptHistory, 10000);
}

function stopPolling() {
  clearInterval(statusInterval); statusInterval = null;
  clearInterval(logsInterval); logsInterval = null;
  clearInterval(argsInterval); argsInterval = null;
  clearInterval(promptInterval); promptInterval = null;
}

// ============================================================================
// Initialization helpers
// ============================================================================

function initTabState() {
  const savedTab = localStorage.getItem('miku-active-tab');
  if (savedTab && document.getElementById(savedTab)) {
    switchTab(savedTab);
  }
}

function initTabWheelScroll() {
  const tabButtonsEl = document.querySelector('.tab-buttons');
  if (tabButtonsEl) {
    tabButtonsEl.addEventListener('wheel', function(e) {
      if (e.deltaY !== 0) {
        e.preventDefault();
        tabButtonsEl.scrollLeft += e.deltaY;
      }
    }, { passive: false });
  }
}

function initVisibilityPolling() {
  document.addEventListener('visibilitychange', () => {
    if (document.hidden) {
      stopPolling();
      console.log('⏸ Tab hidden — polling paused');
    } else {
      loadStatus(); loadLogs(); loadActiveArguments(); loadPromptHistory();
      startPolling();
      console.log('▶️ Tab visible — polling resumed');
    }
  });
}

function initChatImagePreview() {
  const imageInput = document.getElementById('chat-image-file');
  if (imageInput) {
    imageInput.addEventListener('change', function(e) {
      const file = e.target.files[0];
      if (file) {
        const reader = new FileReader();
        reader.onload = function(event) {
          const preview = document.getElementById('chat-image-preview');
          const previewImg = document.getElementById('chat-image-preview-img');
          previewImg.src = event.target.result;
          preview.style.display = 'block';
        };
        reader.readAsDataURL(file);
      }
    });
  }
}

function initModalAccessibility() {
  const editModal = document.getElementById('edit-memory-modal');
  const createModal = document.getElementById('create-memory-modal');
  if (editModal) {
    editModal.setAttribute('role', 'dialog');
    editModal.setAttribute('aria-modal', 'true');
    editModal.setAttribute('aria-label', 'Edit Memory');
    editModal.addEventListener('click', function(e) {
      if (e.target === this) closeEditMemoryModal();
    });
  }
  if (createModal) {
    createModal.setAttribute('role', 'dialog');
    createModal.setAttribute('aria-modal', 'true');
    createModal.setAttribute('aria-label', 'Create Memory');
    createModal.addEventListener('click', function(e) {
      if (e.target === this) closeCreateMemoryModal();
    });
  }
}

function initPromptSourceToggle() {
  const saved = localStorage.getItem('miku-prompt-source') || 'all';
  document.querySelectorAll('.prompt-source-btn').forEach(btn => btn.classList.remove('active'));
  const btnId = saved === 'all' ? 'prompt-src-all' : `prompt-src-${saved}`;
  const btn = document.getElementById(btnId);
  if (btn) btn.classList.add('active');
}

function initLogsScrollDetection() {
  const logsPanel = document.getElementById('logs-panel');
  if (!logsPanel) return;
  logsPanel.addEventListener('scroll', function() {
    const atBottom = logsPanel.scrollHeight - logsPanel.scrollTop - logsPanel.clientHeight < 50;
    logsAutoScroll = atBottom;
    const banner = document.getElementById('logs-paused-banner');
    if (banner) banner.style.display = atBottom ? 'none' : 'block';
  });
}

function scrollLogsToBottom() {
  const logsPanel = document.getElementById('logs-panel');
  if (logsPanel) {
    logsPanel.scrollTop = logsPanel.scrollHeight;
    logsAutoScroll = true;
    const banner = document.getElementById('logs-paused-banner');
    if (banner) banner.style.display = 'none';
  }
}

// ============================================================================
// Log functions
// ============================================================================

function classifyLogLine(line) {
  const upper = line.toUpperCase();
  if (upper.includes(' ERROR ') || upper.includes(' CRITICAL ') || upper.startsWith('ERROR') || upper.startsWith('CRITICAL') || upper.includes('TRACEBACK')) return 'log-error';
  if (upper.includes(' WARNING ') || upper.startsWith('WARNING')) return 'log-warning';
  if (upper.includes(' DEBUG ') || upper.startsWith('DEBUG')) return 'log-debug';
  return 'log-info';
}

async function loadLogs() {
  try {
    const result = await apiCall('/logs');
    const logsContent = document.getElementById('logs-content');
    const lines = (result || '').split('\n');
    logsContent.innerHTML = lines.map(line => {
      if (!line.trim()) return '';
      const cls = classifyLogLine(line);
      return `<div class="log-line ${cls}">${escapeHtml(line)}</div>`;
    }).join('');

    if (logsAutoScroll) {
      scrollLogsToBottom();
    }
  } catch (error) {
    console.error('Failed to load logs:', error);
  }
}

// ============================================================================
// Prompt source toggle (shared between core and status modules)
// ============================================================================

function switchPromptSource(source) {
  localStorage.setItem('miku-prompt-source', source);
  document.querySelectorAll('.prompt-source-btn').forEach(btn => btn.classList.remove('active'));
  const btnId = source === 'all' ? 'prompt-src-all' : `prompt-src-${source}`;
  const btn = document.getElementById(btnId);
  if (btn) btn.classList.add('active');
  loadPromptHistory();
}

// ============================================================================
// Profile picture metadata (stub — actual loading in profile.js)
// ============================================================================

async function loadProfilePictureMetadata() {
  // Delegated to PFP tab loader — only runs if tab11 is active
}

// ============================================================================
// DOMContentLoaded — main initialization
// ============================================================================

document.addEventListener('DOMContentLoaded', function() {
  initTabState();
  initTabWheelScroll();
  initLogsScrollDetection();
  initChatImagePreview();
  initModalAccessibility();
  initPromptSourceToggle();

  loadStatus();
  loadServers();
  populateMoodDropdowns();
  loadLastPrompt();
  loadLogs();
  checkEvilModeStatus();
  checkBipolarModeStatus();
  checkGPUStatus();
  refreshLanguageStatus();
  refreshFigurineSubscribers();
  loadProfilePictureMetadata();
  loadVoiceDebugMode();

  initVisibilityPolling();
  startPolling();

  // Modal keyboard close handler
  document.addEventListener('keydown', function(e) {
    if (e.key === 'Escape') {
      const editModal = document.getElementById('edit-memory-modal');
      const createModal = document.getElementById('create-memory-modal');
      if (editModal && editModal.style.display !== 'none') closeEditMemoryModal();
      if (createModal && createModal.style.display !== 'none') closeCreateMemoryModal();
    }
  });
});