const PLATFORM_META = Object.freeze({
  xiaohongshu: { short: '红', className: 'platform-xiaohongshu' },
  douyin: { short: '抖', className: 'platform-douyin' },
  wechat_channels: { short: '视', className: 'platform-wechat_channels' },
  bilibili: { short: 'B', className: 'platform-bilibili' },
  xianyu: { short: '闲', className: 'platform-xianyu' }
})

const STATUS_META = Object.freeze({
  PENDING: { text: '等待扩展接收', className: '' },
  OPENING: { text: '正在打开平台', className: 'is-running' },
  LOGIN_REQUIRED: { text: '需要登录', className: 'is-login' },
  DOWNLOADING: { text: '正在读取素材', className: 'is-running' },
  UPLOADING: { text: '正在上传素材', className: 'is-running' },
  FILLING: { text: '正在填写资料', className: 'is-running' },
  READY_TO_PUBLISH: { text: '等待手动发布', className: 'is-ready' },
  SUCCEEDED: { text: '发布成功', className: 'is-ready' },
  FAILED: { text: '处理失败，可重试', className: 'is-failed' },
  CANCELLED: { text: '页面已关闭，可重试', className: 'is-failed' }
})

const taskList = document.getElementById('task-list')
const emptyState = document.getElementById('empty-state')
const notice = document.getElementById('notice')
const template = document.getElementById('task-template')
document.getElementById('version').textContent = 'v' + chrome.runtime.getManifest().version
document.getElementById('refresh-list').addEventListener('click', loadTasks)

chrome.storage.onChanged.addListener((changes, areaName) => {
  if (areaName !== 'local') return
  if (Object.keys(changes).some(key => key.startsWith('publisher_task_'))) loadTasks()
})

async function loadTasks() {
  const response = await sendMessage({ type: 'SIDEPANEL_GET_TASKS' })
  if (!response || !response.ok) {
    showNotice(response && response.message || '读取发布任务失败')
    return
  }
  renderTasks(response.tasks || [])
}

function renderTasks(tasks) {
  taskList.replaceChildren()
  emptyState.hidden = tasks.length > 0
  for (const task of tasks) {
    const card = template.content.firstElementChild.cloneNode(true)
    const meta = PLATFORM_META[task.platform] || { short: '?', className: '' }
    const status = STATUS_META[task.status] || { text: task.status || '未知状态', className: '' }
    const icon = card.querySelector('.platform-icon')
    icon.textContent = meta.short
    icon.classList.add(meta.className)
    card.querySelector('.platform-name').textContent = task.platformName || task.platform
    card.querySelector('.task-title').textContent = task.title || '当前发布任务'
    const statusLine = card.querySelector('.status-line')
    statusLine.classList.add(status.className)
    statusLine.querySelector('span').textContent = task.statusMessage || status.text

    card.querySelector('.task-main').addEventListener('click', async () => {
      const response = await sendMessage({ type: 'SIDEPANEL_ACTIVATE_TASK', taskId: task.taskId })
      if (!response || !response.ok) showNotice(response && response.message || '无法定位平台页面')
    })

    const retryButton = card.querySelector('.retry-button')
    retryButton.disabled = !task.canRetry
    retryButton.title = task.canRetry ? '重新打开并重试' : '已发布成功，不能重复执行'
    retryButton.addEventListener('click', async () => {
      retryButton.disabled = true
      retryButton.classList.add('is-loading')
      const response = await sendMessage({ type: 'SIDEPANEL_RETRY_TASK', taskId: task.taskId })
      retryButton.classList.remove('is-loading')
      if (!response || !response.ok) {
        retryButton.disabled = !task.canRetry
        showNotice(response && response.message || '重试失败')
        return
      }
      showNotice('已重新打开' + (task.platformName || task.platform) + '并开始填写', true)
      await loadTasks()
    })
    taskList.appendChild(card)
  }
}

function showNotice(message, success = false) {
  notice.textContent = message
  notice.classList.toggle('is-success', success)
  notice.hidden = false
  window.setTimeout(() => { notice.hidden = true }, 4000)
}

function sendMessage(message) {
  return new Promise(resolve => {
    chrome.runtime.sendMessage(message, response => {
      if (chrome.runtime.lastError) {
        resolve({ ok: false, message: chrome.runtime.lastError.message })
        return
      }
      resolve(response)
    })
  })
}

loadTasks()