// Pulse App - Main JavaScript

// Инициализация при загрузке
document.addEventListener('DOMContentLoaded', () => {
  initNavigation();
  initRatingInputs();
  loadDashboard();
  loadIdeas();
  loadProfile();
  initForms();
  initFilters();
  initModals();
  renderCharts();
});

// Навигация между секциями
function initNavigation() {
  const navLinks = document.querySelectorAll('.nav-link');
  navLinks.forEach(link => {
    link.addEventListener('click', (e) => {
      e.preventDefault();
      const section = link.dataset.section;
      showSection(section);
      
      navLinks.forEach(l => l.classList.remove('active'));
      link.classList.add('active');
    });
  });
}

function showSection(sectionId) {
  document.querySelectorAll('.section').forEach(s => s.classList.remove('active'));
  document.getElementById(sectionId).classList.add('active');
  
  if (sectionId === 'analytics') {
    loadAnalytics();
  }
}

window.showSection = showSection;

// Рейтинг (звезды)
function initRatingInputs() {
  const ratingContainers = document.querySelectorAll('.rating-input');
  
  ratingContainers.forEach(container => {
    const stars = container.querySelectorAll('.rating-star');
    const hiddenInput = container.parentElement.querySelector('input[type="hidden"]');
    
    stars.forEach(star => {
      star.addEventListener('click', () => {
        const value = parseInt(star.dataset.value);
        stars.forEach((s, i) => {
          s.classList.toggle('active', i < value);
        });
        if (hiddenInput) {
          hiddenInput.value = value;
        }
        container.dataset.value = value;
      });
      
      star.addEventListener('mouseenter', () => {
        const value = parseInt(star.dataset.value);
        stars.forEach((s, i) => {
          s.classList.toggle('active', i < value);
        });
      });
      
      star.addEventListener('mouseleave', () => {
        const currentValue = parseInt(container.dataset.value || 0);
        stars.forEach((s, i) => {
          s.classList.toggle('active', i < currentValue);
        });
      });
    });
  });
}

// Загрузка дэшборда
function loadDashboard() {
  const reviews = appData.reviews;
  const ideas = appData.ideas;
  
  // KPI
  document.getElementById('kpiReviews').textContent = reviews.length;
  
  const avgRating = reviews.length > 0 
    ? (reviews.reduce((sum, r) => sum + r.rating, 0) / reviews.length).toFixed(1)
    : '0.0';
  document.getElementById('kpiAvgRating').textContent = avgRating;
  
  document.getElementById('kpiIdeas').textContent = ideas.length;
  document.getElementById('kpiImplemented').textContent = ideas.filter(i => i.status === 'done').length;
  document.getElementById('kpiResolved').textContent = reviews.filter(r => r.status === 'done').length;
  
  const engagementIndex = appData.settings.engagementIndex;
  document.getElementById('kpiEngagement').textContent = engagementIndex;
  
  const trendEl = document.getElementById('kpiTrend');
  const trend = appData.settings.engagementTrend;
  trendEl.textContent = trend === 'up' ? '↑ рост' : trend === 'down' ? '↓ снижение' : '→ без изменений';
  
  // Последние идеи
  const ideasList = document.getElementById('ideasList');
  const recentIdeas = ideas.slice(0, 3);
  ideasList.innerHTML = recentIdeas.map(idea => createIdeaCard(idea)).join('');
}

// Создание карточки идеи
function createIdeaCard(idea) {
  const statusLabels = {
    new: 'Новая',
    review: 'На рассмотрении',
    accepted: 'Принята',
    implement: 'В реализации',
    done: 'Реализована',
    rejected: 'Отклонена'
  };
  
  return `
    <div class="idea-card" data-id="${idea.id}">
      <div class="idea-header">
        <div class="idea-title">${idea.title}</div>
        <span class="idea-status status-${idea.status}">${statusLabels[idea.status]}</span>
      </div>
      <div class="idea-meta">
        <span>👤 ${idea.anonymous ? 'Анонимно' : idea.author}</span>
        <span>📅 ${formatDate(idea.date)}</span>
        <span>🏢 ${getDeptName(idea.department)}</span>
      </div>
      <div class="idea-description">
        <strong>Проблема:</strong> ${idea.problem}<br>
        <strong>Решение:</strong> ${idea.solution}
      </div>
      <div class="idea-actions">
        <button class="vote-btn" onclick="voteIdea(${idea.id})">
          👍 <span class="vote-count">${idea.votes}</span>
        </button>
        <span class="idea-comments">💬 ${idea.comments} комментариев</span>
      </div>
    </div>
  `;
}

// Загрузка идей
function loadIdeas() {
  const container = document.getElementById('ideasContainer');
  container.innerHTML = appData.ideas.map(idea => createIdeaCard(idea)).join('');
}

// Голосование за идею
function voteIdea(id) {
  const idea = appData.ideas.find(i => i.id === id);
  if (idea && !idea.hasVoted) {
    idea.votes++;
    idea.hasVoted = true;
    saveData(appData);
    loadIdeas();
    
    // Визуальное подтверждение
    const btn = event.target.closest('.vote-btn');
    btn.classList.add('voted');
    btn.querySelector('.vote-count').textContent = idea.votes;
  }
}

window.voteIdea = voteIdea;

// Фильтры идей
function initFilters() {
  const filterBtns = document.querySelectorAll('.filter-btn');
  filterBtns.forEach(btn => {
    btn.addEventListener('click', () => {
      filterBtns.forEach(b => b.classList.remove('active'));
      btn.classList.add('active');
      
      const status = btn.dataset.status;
      const container = document.getElementById('ideasContainer');
      
      const filtered = status === 'all' 
        ? appData.ideas 
        : appData.ideas.filter(i => i.status === status);
      
      container.innerHTML = filtered.map(idea => createIdeaCard(idea)).join('');
    });
  });
}

// Формы
function initForms() {
  // Форма обратной связи
  document.getElementById('feedbackForm').addEventListener('submit', (e) => {
    e.preventDefault();
    
    const review = {
      id: Date.now(),
      date: new Date().toISOString().split('T')[0],
      direction: document.getElementById('fbDirection').value,
      rating: parseInt(document.getElementById('fbRating').value) || 0,
      type: document.getElementById('fbType').value,
      comment: document.getElementById('fbComment').value,
      suggestion: document.getElementById('fbSuggestion').value,
      anonymous: document.getElementById('fbAnonymous').checked,
      department: appData.profile.department.toLowerCase().split(' ')[0],
      status: 'new'
    };
    
    appData.reviews.push(review);
    saveData(appData);
    
    document.getElementById('feedbackForm').style.display = 'none';
    document.getElementById('feedbackSuccess').style.display = 'block';
    
    loadDashboard();
    loadProfile();
  });
  
  // Форма идеи
  document.getElementById('ideaForm').addEventListener('submit', (e) => {
    e.preventDefault();
    
    const idea = {
      id: Date.now(),
      title: document.getElementById('ideaTitle').value,
      problem: document.getElementById('ideaProblem').value,
      solution: document.getElementById('ideaSolution').value,
      effect: document.getElementById('ideaEffect').value,
      category: document.getElementById('ideaCategory').value,
      department: document.getElementById('ideaDept').value,
      votes: 0,
      comments: 0,
      status: 'new',
      anonymous: document.getElementById('ideaAnonymous').checked,
      author: appData.profile.name,
      date: new Date().toISOString().split('T')[0],
      hasVoted: false
    };
    
    appData.ideas.push(idea);
    saveData(appData);
    
    closeModal('ideaModal');
    loadIdeas();
    loadDashboard();
    
    alert('Идея отправлена на рассмотрение!');
    e.target.reset();
  });
  
  // Форма автоматизации
  document.getElementById('automationForm').addEventListener('submit', (e) => {
    e.preventDefault();
    
    const automation = {
      id: Date.now(),
      process: document.getElementById('autoProcess').value,
      department: document.getElementById('autoDept').value,
      problem: document.getElementById('autoProblem').value,
      solution: document.getElementById('autoSolution').value,
      effect: document.getElementById('autoEffect').value,
      date: new Date().toISOString().split('T')[0],
      status: 'new'
    };
    
    appData.automation.push(automation);
    saveData(appData);
    
    alert('Предложение по автоматизации отправлено!');
    e.target.reset();
  });
  
  // Опросы адаптации
  document.querySelectorAll('[data-survey]').forEach(btn => {
    btn.addEventListener('click', () => {
      const surveyType = btn.dataset.survey;
      document.getElementById('adaptationSurvey').style.display = 'block';
      document.getElementById('surveyTitle').textContent = 
        surveyType === 'week1' ? 'Опрос: Первая неделя' :
        surveyType === 'month1' ? 'Опрос: 1 месяц' : 'Опрос: После испытательного срока';
      
      document.querySelectorAll('.survey-rating').forEach(r => r.dataset.value = 0);
      document.querySelectorAll('.rating-star').forEach(s => s.classList.remove('active'));
      document.getElementById('surveyComment').value = '';
    });
  });
  
  document.getElementById('adaptationForm').addEventListener('submit', (e) => {
    e.preventDefault();
    
    const ratings = document.querySelectorAll('.survey-rating');
    let tasks = 0, support = 0;
    
    ratings.forEach(r => {
      if (r.dataset.field === 'tasks') tasks = parseInt(r.dataset.value);
      if (r.dataset.field === 'support') support = parseInt(r.dataset.value);
    });
    
    const survey = {
      id: Date.now(),
      type: 'adaptation',
      date: new Date().toISOString().split('T')[0],
      tasks,
      support,
      comment: document.getElementById('surveyComment').value
    };
    
    appData.surveys.push(survey);
    saveData(appData);
    
    document.getElementById('adaptationSurvey').style.display = 'none';
    alert('Спасибо за участие в опросе!');
  });
}

// Профиль
function loadProfile() {
  const profile = appData.profile;
  document.getElementById('profileName').textContent = profile.name;
  document.getElementById('userName').textContent = profile.name.split(' ')[0];
  document.getElementById('profileDept').textContent = profile.department;
  document.getElementById('profilePosition').textContent = profile.position;
  document.getElementById('profileTenure').textContent = 'Стаж: ' + profile.tenure;
  
  const myReviews = appData.reviews.filter(r => !r.anonymous);
  document.getElementById('statReviews').textContent = myReviews.length;
  document.getElementById('statIdeas').textContent = appData.ideas.filter(i => !i.anonymous && i.author === profile.name).length;
  document.getElementById('statSurveys').textContent = appData.surveys.length;
  
  const historyList = document.getElementById('profileHistory');
  historyList.innerHTML = myReviews.slice(0, 5).map(r => `
    <div class="history-item">
      <div class="history-item-header">
        <span class="history-item-title">${getDirectionName(r.direction)}</span>
        <span class="history-item-date">${formatDate(r.date)}</span>
      </div>
      <div class="history-item-status">Статус: ${getStatusName(r.status)}</div>
    </div>
  `).join('') || '<p>Пока нет обращений</p>';
}

// Аналитика
function loadAnalytics() {
  const reviews = appData.reviews;
  const ideas = appData.ideas;
  const settings = appData.settings;
  
  document.getElementById('akpiEmployees').textContent = settings.totalEmployees;
  document.getElementById('akpiParticipants').textContent = reviews.length;
  document.getElementById('akpiResponse').textContent = 
    Math.round((reviews.length / settings.totalEmployees) * 100) + '%';
  
  const avgRating = reviews.length > 0 
    ? (reviews.reduce((sum, r) => sum + r.rating, 0) / reviews.length).toFixed(1)
    : '0.0';
  document.getElementById('akpiAvgRating').textContent = avgRating;
  
  // Проблемные направления
  const directionCounts = {};
  reviews.forEach(r => {
    directionCounts[r.direction] = (directionCounts[r.direction] || 0) + 1;
  });
  
  const sortedDirections = Object.entries(directionCounts)
    .sort((a, b) => b[1] - a[1])
    .slice(0, 5);
  
  document.getElementById('problemAreas').innerHTML = sortedDirections.map(([dir, count]) => `
    <div class="problem-item">
      <span class="problem-name">${getDirectionName(dir)}</span>
      <span class="problem-count">${count}</span>
    </div>
  `).join('');
  
  // Идеи по категориям
  const categoryCounts = {};
  ideas.forEach(i => {
    categoryCounts[i.category] = (categoryCounts[i.category] || 0) + 1;
  });
  
  document.getElementById('ideasByCategory').innerHTML = Object.entries(categoryCounts)
    .sort((a, b) => b[1] - a[1])
    .map(([cat, count]) => `
      <div class="category-item">
        <span class="category-name">${getCategoryName(cat)}</span>
        <span class="category-count">${count}</span>
      </div>
    `).join('');
}

// Экспорт в Excel
document.getElementById('exportBtn')?.addEventListener('click', () => {
  // Создаём CSV с BOM для Excel
  const head = ['Дата', 'Подразделение', 'Направление', 'Оценка', 'Комментарий', 'Тип', 'Статус'];
  const body = appData.reviews.map(r => [
    r.date,
    r.department,
    getDirectionName(r.direction),
    r.rating,
    '"' + r.comment.replace(/"/g, '""') + '"',
    r.type,
    r.status
  ].join(';'));
  
  const csv = '\uFEFF' + [head.join(';'), ...body].join('\n');
  
  const blob = new Blob([csv], { type: 'text/csv;charset=utf-8;' });
  const url = URL.createObjectURL(blob);
  const a = document.createElement('a');
  a.href = url;
  a.download = 'pulse_feedback_' + new Date().toISOString().split('T')[0] + '.csv';
  a.click();
  URL.revokeObjectURL(url);
});

// Модальные окна
function initModals() {
  document.getElementById('newIdeaBtn').addEventListener('click', () => {
    document.getElementById('ideaModal').classList.add('active');
  });
}

window.closeModal = function(modalId) {
  document.getElementById(modalId).classList.remove('active');
};

window.resetFeedbackForm = function() {
  document.getElementById('feedbackForm').reset();
  document.getElementById('feedbackForm').style.display = 'flex';
  document.getElementById('feedbackSuccess').style.display = 'none';
  document.querySelectorAll('.rating-star').forEach(s => s.classList.remove('active'));
};

// Простые графики на Canvas
function renderCharts() {
  // График вовлечённости (простая имитация)
  const engagementCanvas = document.getElementById('engagementCanvas');
  if (engagementCanvas) {
    const ctx = engagementCanvas.getContext('2d');
    const data = [65, 68, 72, 70, 75, 78];
    drawLineChart(ctx, data, '#4A90E2', 300, 200);
  }
  
  // Рейтинг по направлениям
  const ratingCanvas = document.getElementById('ratingCanvas');
  if (ratingCanvas) {
    const ctx = ratingCanvas.getContext('2d');
    const data = [4.2, 3.8, 4.5, 4.0, 3.9];
    drawBarChart(ctx, data, ['#4A90E2', '#5DBCD2', '#00B8CC', '#10B981', '#F59E0B'], 300, 200);
  }
}

function drawLineChart(ctx, data, color, width, height) {
  ctx.canvas.width = width;
  ctx.canvas.height = height;
  ctx.clearRect(0, 0, width, height);
  
  const step = width / (data.length - 1);
  const max = Math.max(...data);
  const min = Math.min(...data);
  const range = max - min || 1;
  
  ctx.beginPath();
  ctx.strokeStyle = color;
  ctx.lineWidth = 3;
  ctx.lineJoin = 'round';
  
  data.forEach((val, i) => {
    const x = i * step;
    const y = height - ((val - min) / range) * (height - 40) - 20;
    if (i === 0) ctx.moveTo(x, y);
    else ctx.lineTo(x, y);
  });
  
  ctx.stroke();
  
  // Точки
  data.forEach((val, i) => {
    const x = i * step;
    const y = height - ((val - min) / range) * (height - 40) - 20;
    ctx.beginPath();
    ctx.fillStyle = color;
    ctx.arc(x, y, 5, 0, Math.PI * 2);
    ctx.fill();
  });
}

function drawBarChart(ctx, data, colors, width, height) {
  ctx.canvas.width = width;
  ctx.canvas.height = height;
  ctx.clearRect(0, 0, width, height);
  
  const barWidth = (width - 40) / data.length - 10;
  const max = Math.max(...data);
  
  data.forEach((val, i) => {
    const x = 20 + i * (barWidth + 10);
    const barHeight = (val / max) * (height - 40);
    const y = height - barHeight - 20;
    
    ctx.fillStyle = colors[i % colors.length];
    ctx.fillRect(x, y, barWidth, barHeight);
    
    // Значение
    ctx.fillStyle = '#333';
    ctx.font = '12px Arial';
    ctx.textAlign = 'center';
    ctx.fillText(val.toFixed(1), x + barWidth/2, y - 5);
  });
}

// Вспомогательные функции
function formatDate(dateStr) {
  const d = new Date(dateStr);
  return d.toLocaleDateString('ru-RU', { day: 'numeric', month: 'long' });
}

function getDirectionName(dir) {
  const names = {
    adaptation: 'Адаптация',
    training: 'Обучение',
    discipline: 'Трудовая дисциплина',
    automation: 'Автоматизация',
    innovation: 'Инновации',
    other: 'Другое'
  };
  return names[dir] || dir;
}

function getDeptName(dept) {
  const names = {
    hr: 'HR',
    it: 'IT',
    finance: 'Финансы',
    procurement: 'Закупки',
    sales: 'Продажи',
    support: 'Поддержка',
    other: 'Другое'
  };
  return names[dept] || dept;
}

function getStatusName(status) {
  const names = {
    new: 'Новое',
    review: 'На рассмотрении',
    accepted: 'Принято',
    implement: 'В работе',
    done: 'Решено',
    rejected: 'Отклонено'
  };
  return names[status] || status;
}

function getCategoryName(cat) {
  const names = {
    process: 'Оптимизация процессов',
    automation: 'Автоматизация',
    cost: 'Снижение затрат',
    quality: 'Повышение качества',
    safety: 'Безопасность',
    other: 'Другое'
  };
  return names[cat] || cat;
}