// CutThink Lite - 主入口文件

import { invoke } from '@tauri-apps/api/tauri'
import { listen } from '@tauri-apps/api/event'

// 应用状态管理
const store = {
  currentView: 'screenshot',
  screenshots: [],
  settings: {
    theme: 'system',
    language: 'zh-CN',
    format: 'png',
    hideWindow: true,
    soundEffect: true,
  },
}

// DOM 元素引用
const elements = {
  navItems: null,
  views: null,
  btnCapture: null,
  btnCaptureArea: null,
  btnCaptureWindow: null,
  galleryGrid: null,
  uploadArea: null,
}

// 初始化应用
async function init() {
  console.log('CutThink Lite 初始化中...')

  // 获取 DOM 元素
  cacheElements()

  // 绑定事件
  bindEvents()

  // 加载设置
  await loadSettings()

  // 加载截图列表
  await loadScreenshots()

  // 设置默认视图
  switchView('screenshot')

  console.log('CutThink Lite 初始化完成')
}

// 缓存 DOM 元素
function cacheElements() {
  elements.navItems = document.querySelectorAll('.nav-item')
  elements.views = document.querySelectorAll('.view')
  elements.btnCapture = document.getElementById('btn-capture')
  elements.btnCaptureArea = document.getElementById('btn-capture-area')
  elements.btnCaptureWindow = document.getElementById('btn-capture-window')
  elements.galleryGrid = document.getElementById('gallery-grid')
  elements.uploadArea = document.getElementById('upload-area')
}

// 绑定事件
function bindEvents() {
  // 导航切换
  elements.navItems.forEach(item => {
    item.addEventListener('click', () => {
      const view = item.dataset.view
      switchView(view)
    })
  })

  // 截图按钮
  if (elements.btnCapture) {
    elements.btnCapture.addEventListener('click', () => {
      console.log('触发全屏截图')
      handleCapture('full')
    })
  }

  if (elements.btnCaptureArea) {
    elements.btnCaptureArea.addEventListener('click', () => {
      console.log('触发区域截图')
      handleCapture('area')
    })
  }

  if (elements.btnCaptureWindow) {
    elements.btnCaptureWindow.addEventListener('click', () => {
      console.log('触发窗口截图')
      handleCapture('window')
    })
  }

  // 上传区域拖拽
  if (elements.uploadArea) {
    setupDragAndDrop()
  }

  // 监听 Tauri 事件
  setupTauriListeners()
}

// 视图切换
function switchView(viewName) {
  console.log('切换视图:', viewName)

  // 更新导航状态
  elements.navItems.forEach(item => {
    if (item.dataset.view === viewName) {
      item.classList.add('active')
    } else {
      item.classList.remove('active')
    }
  })

  // 更新视图显示
  elements.views.forEach(view => {
    if (view.id === `view-${viewName}`) {
      view.classList.add('active')
    } else {
      view.classList.remove('active')
    }
  })

  store.currentView = viewName
}

// 处理截图
async function handleCapture(type) {
  try {
    console.log('开始截图:', type)

    // 调用 Tauri 后端截图功能
    // 注意: 这需要在 Tauri 后端实现相应的命令
    const result = await invoke('capture_screenshot', {
      type,
    })

    console.log('截图成功:', result)

    // 刷新截图列表
    await loadScreenshots()

    // 显示成功提示
    showNotification('截图成功', 'success')
  } catch (error) {
    console.error('截图失败:', error)
    showNotification('截图失败: ' + error.message, 'error')
  }
}

// 加载截图列表
async function loadScreenshots() {
  try {
    console.log('加载截图列表...')

    // 调用 Tauri 后端获取截图列表
    // 注意: 这需要在 Tauri 后端实现相应的命令
    const screenshots = await invoke('get_screenshots', {})

    store.screenshots = screenshots
    renderGallery()
  } catch (error) {
    console.error('加载截图失败:', error)
    store.screenshots = []
    renderGallery()
  }
}

// 渲染画廊
function renderGallery() {
  if (!elements.galleryGrid) return

  if (store.screenshots.length === 0) {
    elements.galleryGrid.innerHTML = `
      <div class="placeholder">
        <p>暂无截图</p>
        <small>截图后会自动显示在这里</small>
      </div>
    `
    return
  }

  elements.galleryGrid.innerHTML = store.screenshots
    .map(
      screenshot => `
    <div class="gallery-item">
      <img src="${screenshot.path}" alt="${screenshot.name}">
      <div class="gallery-item-info">
        <span class="gallery-item-name">${screenshot.name}</span>
        <span class="gallery-item-date">${formatDate(screenshot.date)}</span>
      </div>
    </div>
  `
    )
    .join('')
}

// 设置拖拽上传
function setupDragAndDrop() {
  const area = elements.uploadArea

  area.addEventListener('dragover', e => {
    e.preventDefault()
    area.classList.add('dragover')
  })

  area.addEventListener('dragleave', () => {
    area.classList.remove('dragover')
  })

  area.addEventListener('drop', e => {
    e.preventDefault()
    area.classList.remove('dragover')

    const files = Array.from(e.dataTransfer.files)
    handleFileUpload(files)
  })

  area.addEventListener('click', () => {
    const input = document.createElement('input')
    input.type = 'file'
    input.accept = 'image/png,image/jpeg,image/jpg'
    input.multiple = true

    input.addEventListener('change', e => {
      const files = Array.from(e.target.files)
      handleFileUpload(files)
    })

    input.click()
  })
}

// 处理文件上传
async function handleFileUpload(files) {
  console.log('上传文件:', files)

  for (const file of files) {
    try {
      // 调用 Tauri 后端上传文件
      // 注意: 这需要在 Tauri 后端实现相应的命令
      const result = await invoke('upload_screenshot', {
        path: file.path,
      })

      console.log('上传成功:', result)
      showNotification('上传成功', 'success')
    } catch (error) {
      console.error('上传失败:', error)
      showNotification('上传失败: ' + error.message, 'error')
    }
  }
}

// 加载设置
async function loadSettings() {
  try {
    // 调用 Tauri 后端加载设置
    // 注意: 这需要在 Tauri 后端实现相应的命令
    const settings = await invoke('get_settings', {})

    store.settings = { ...store.settings, ...settings }
    applySettings()
  } catch (error) {
    console.error('加载设置失败:', error)
  }
}

// 应用设置
function applySettings() {
  // 应用主题
  document.documentElement.setAttribute('data-theme', store.settings.theme)

  // 应用其他设置
  console.log('应用设置:', store.settings)
}

// 设置 Tauri 事件监听
function setupTauriListeners() {
  // 监听截图完成事件
  listen('screenshot-taken', event => {
    console.log('收到截图事件:', event.payload)
    loadScreenshots()
  })

  // 监听上传完成事件
  listen('upload-complete', event => {
    console.log('收到上传完成事件:', event.payload)
    showNotification('上传成功', 'success')
  })
}

// 显示通知
function showNotification(message, type = 'info') {
  console.log(`[${type}] ${message}`)

  // TODO: 实现更完善的通知 UI
  const notification = document.createElement('div')
  notification.className = `notification notification-${type}`
  notification.textContent = message
  notification.style.cssText = `
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 12px 24px;
    background: ${type === 'success' ? 'var(--success-color)' : type === 'error' ? 'var(--danger-color)' : 'var(--primary-color)'};
    color: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    animation: slideIn 0.3s ease-out;
  `

  document.body.appendChild(notification)

  setTimeout(() => {
    notification.style.animation = 'slideOut 0.3s ease-out'
    setTimeout(() => {
      document.body.removeChild(notification)
    }, 300)
  }, 3000)
}

// 格式化日期
function formatDate(dateString) {
  const date = new Date(dateString)
  const now = new Date()
  const diff = now - date

  if (diff < 60000) {
    return '刚刚'
  } else if (diff < 3600000) {
    return `${Math.floor(diff / 60000)} 分钟前`
  } else if (diff < 86400000) {
    return `${Math.floor(diff / 3600000)} 小时前`
  } else {
    return date.toLocaleDateString('zh-CN')
  }
}

// 添加动画样式
const style = document.createElement('style')
style.textContent = `
  @keyframes slideIn {
    from {
      transform: translateX(100%);
      opacity: 0;
    }
    to {
      transform: translateX(0);
      opacity: 1;
    }
  }

  @keyframes slideOut {
    from {
      transform: translateX(0);
      opacity: 1;
    }
    to {
      transform: translateX(100%);
      opacity: 0;
    }
  }

  .upload-area.dragover {
    border-color: var(--primary-color);
    background: var(--bg-tertiary);
  }
`
document.head.appendChild(style)

// 初始化应用
document.addEventListener('DOMContentLoaded', init)

// 导出 API 供其他模块使用
export { store, switchView, handleCapture, loadScreenshots, showNotification }