// frontend/utils/handlers/progressHandler.js
// 活动进度缓存 handler（简单型）
import { isProtectedKey } from '@/utils/cacheManager'

const PREFIX = 'progress_'

function listProgressKeys() {
  try {
    const info = uni.getStorageInfoSync()
    return (info.keys || []).filter((k) => k.startsWith(PREFIX) && !isProtectedKey(k))
  } catch (e) { return [] }
}

function computeSizeOf(keys) {
  let total = 0
  for (const k of keys) {
    try {
      const v = uni.getStorageSync(k)
      if (v != null) total += JSON.stringify(v).length
    } catch (e) { /* skip */ }
  }
  return total
}

export default {
  id: 'progress',
  label: '活动进度缓存',
  description: '支持活动页断网浏览',
  warning: false,
  async computeSize() {
    const keys = listProgressKeys()
    return { sizeBytes: computeSizeOf(keys), keyCount: keys.length }
  },
  async clean() {
    const keys = listProgressKeys()
    let freed = 0
    for (const k of keys) {
      try {
        const v = uni.getStorageSync(k)
        if (v != null) freed += JSON.stringify(v).length
        uni.removeStorageSync(k)
      } catch (e) { /* skip */ }
    }
    return { freedBytes: freed, keyCount: keys.length }
  },
}