<template>
  <div class="page-shell module-page">
    <BrandTopBar active="delete-brand" />

    <div class="main-content">
      <aside class="left-panel">
        <div class="section-title">选择文件</div>
        <div class="upload-zone">
          <div class="hint">上传删除品牌 Excel；无论是直接上传文件还是上传文件夹批量导入，都会按每个 Excel 文件名作为店铺名。</div>
          <div class="btns">
            <button type="button" class="opt-btn" @click="selectFiles">选择 Excel 文件</button>
            <button type="button" class="opt-btn" @click="selectFolder">选择文件夹</button>
          </div>

          <div class="selected-files clean-placeholder split-selected-files">
            <template v-if="selectedPaths.length">
              <span v-for="path in displayPaths" :key="path">{{ path }}</span>
              <span v-if="selectedPaths.length > displayPaths.length" class="more-line">
                还有 {{ selectedPaths.length - displayPaths.length }} 个文件未展开显示
              </span>
            </template>
            <span v-else>暂未选择删除品牌文件</span>
          </div>
        </div>

        <div class="section-title">执行说明</div>
        <div class="option-group">
          <label class="radio-item active">
            <input type="checkbox" checked disabled />
            <div>
              <span class="label">文件名作为店铺名</span>
              <div class="desc">例如 鲍丽明.xlsx 会解析为店铺名 鲍丽明；并自动联动紫鸟进行店铺匹配</div>
            </div>
          </label>

          <label class="radio-item active">
            <input type="checkbox" checked disabled />
            <div>
              <span class="label">文件夹仅用于批量导入</span>
              <div class="desc">文件夹名和子目录名不会参与店铺匹配，只是方便一次上传多个 Excel</div>
            </div>
          </label>

          <label class="radio-item active">
            <input type="checkbox" checked disabled />
            <div>
              <span class="label">按国家分组去重</span>
              <div class="desc">解析后按国家返回，并在每个国家内按 ASIN 去重（保留首次出现的状态）</div>
            </div>
          </label>
        </div>

        <div class="run-row">
          <button type="button" class="btn-run" :disabled="running" @click="submitRun">
            {{ running ? '解析中...' : '开始解析' }}
          </button>
          <span class="loading-msg">
            {{ running ? '正在读取删除品牌数据，请稍候…' : '解析后会在右侧展示按国家分组的去重结果' }}
          </span>
        </div>

        <div v-if="queuePushResult || queuePayloadText" class="queue-debug-card">
          <div class="section-title queue-debug-title">Python 队列推送结果</div>
          <div v-if="queuePushResult" class="queue-debug-line">
            {{ queuePushResult }}
          </div>
          <pre v-if="queuePayloadText" class="queue-debug-payload">{{ queuePayloadText }}</pre>
        </div>
      </aside>

      <section class="right-panel">
        <div class="panel-header">删除品牌结果</div>
        <div class="task-list-wrap">
          <div class="clean-result-summary">
            <div class="summary-card">
              <span class="summary-label">已处理文件</span>
              <strong>{{ summary.total }}</strong>
            </div>
            <div class="summary-card">
              <span class="summary-label">成功结果</span>
              <strong>{{ summary.successCount }}</strong>
            </div>
            <div class="summary-card">
              <span class="summary-label">失败文件</span>
              <strong>{{ summary.failedCount }}</strong>
            </div>
          </div>

          <div class="result-list-wrap">
            <div class="result-list-header">
              <span>删除品牌结果列表</span>
            </div>

            <div v-if="!hasVisibleItems" class="empty-tasks">
              暂无删除品牌结果，完成解析后会在这里展示按国家分组的去重结果
            </div>

            <template v-else>
              <div v-if="currentSectionItems.length" class="result-subsection">
                <div class="result-subsection-title">当前任务</div>
                <ul class="task-list clean-result-list">
                  <li v-for="item in currentSectionItems"
                    :key="`current-${item.taskId || item.resultId || item.sourceFilename}`"
                    class="task-item split-result-item">
                    <div class="left split-result-main">
                      <span class="id" :title="item.sourceFilename">{{ item.sourceFilename || '-' }}</span>
                      <div class="files">店铺名：{{ item.shopName || '-' }}</div>
                      <div class="files">匹配结果：{{ formatMatchResult(item) }}</div>
                      <div v-if="item.platform" class="files">平台：{{ item.platform }}</div>
                      <div v-if="getQueueStatus(item)" class="files">队列状态：{{ getQueueStatus(item) }}</div>
                      <div v-if="item.countryCount !== undefined && item.matched" class="files">国家数：{{ item.countryCount
                        }}</div>
                      <div v-if="item.totalRows !== undefined && item.matched" class="time">去重后 {{ item.totalRows }} 条
                      </div>
                      <div v-if="shouldShowProgress(item)" class="delete-brand-progress-block">
                        <div class="delete-brand-progress-header">
                          <span>任务进度</span>
                          <span>{{ formatProgressPercent(item.taskId!) }}%</span>
                        </div>
                        <div class="delete-brand-progress-bar">
                          <div class="delete-brand-progress-bar-fill"
                            :style="{ width: `${formatProgressPercent(item.taskId!)}%` }"></div>
                        </div>
                        <div class="files delete-brand-progress">{{ formatProgress(item.taskId!) }}</div>
                      </div>
                      <div v-if="item.previewRows?.length" class="files split-entry-list delete-brand-preview">
                        {{ formatPreview(item.previewRows) }}
                      </div>
                      <div v-if="getDisplayError(item)" class="files">错误信息：{{ getDisplayError(item) }}</div>
                    </div>

                    <div class="task-right split-result-actions">
                      <span class="status" :class="getTaskStatusInfo(item).className">
                        {{ getTaskStatusInfo(item).text }}
                      </span>
                      <button v-if="item.openStoreUrl" type="button" class="download" @click="triggerItemRun(item)">
                        打开紫鸟
                      </button>
                      <button v-if="canDownloadTaskResult(item)" type="button" class="download"
                        @click="downloadTaskResult(item)">
                        下载
                      </button>
                      <button v-if="item.resultId" type="button" class="btn-delete"
                        @click="deleteHistoryRecord(item.resultId)">
                        删除
                      </button>
                    </div>
                  </li>
                </ul>
              </div>

              <div v-if="historySectionItems.length" class="result-subsection">
                <div class="result-subsection-title">历史记录</div>
                <ul class="task-list clean-result-list">
                  <li v-for="item in historySectionItems"
                    :key="`history-${item.taskId || item.resultId || item.sourceFilename}`"
                    class="task-item split-result-item">
                    <div class="left split-result-main">
                      <span class="id" :title="item.sourceFilename">{{ item.sourceFilename || '-' }}</span>
                      <div class="files">店铺名：{{ item.shopName || '-' }}</div>
                      <div class="files">匹配结果：{{ formatMatchResult(item) }}</div>
                      <div v-if="item.platform" class="files">平台：{{ item.platform }}</div>
                      <div v-if="item.countryCount !== undefined && item.matched" class="files">国家数：{{ item.countryCount
                        }}</div>
                      <div v-if="item.totalRows !== undefined && item.matched" class="time">去重后 {{ item.totalRows }} 条
                      </div>
                      <div v-if="shouldShowProgress(item)" class="delete-brand-progress-block">
                        <div class="delete-brand-progress-header">
                          <span>任务进度</span>
                          <span>{{ formatProgressPercent(item.taskId!) }}%</span>
                        </div>
                        <div class="delete-brand-progress-bar">
                          <div class="delete-brand-progress-bar-fill"
                            :style="{ width: `${formatProgressPercent(item.taskId!)}%` }"></div>
                        </div>
                        <div class="files delete-brand-progress">{{ formatProgress(item.taskId!) }}</div>
                      </div>
                      <div v-if="item.previewRows?.length" class="files split-entry-list delete-brand-preview">
                        {{ formatPreview(item.previewRows) }}
                      </div>
                      <div v-if="getDisplayError(item)" class="files">错误信息：{{ getDisplayError(item) }}</div>
                    </div>

                    <div class="task-right split-result-actions">
                      <span class="status" :class="getTaskStatusInfo(item).className">
                        {{ getTaskStatusInfo(item).text }}
                      </span>
                      <!-- 历史记录区不再显示打开紫鸟按钮 -->
                      <button v-if="canDownloadTaskResult(item)" type="button" class="download"
                        @click="downloadTaskResult(item)">
                        下载
                      </button>
                      <button v-if="item.resultId" type="button" class="btn-delete"
                        @click="deleteHistoryRecord(item.resultId)">
                        删除
                      </button>
                    </div>
                  </li>
                </ul>
              </div>
            </template>
          </div>
        </div>
      </section>
    </div>
  </div>
</template>

<script setup lang="ts">
import { computed, onMounted, onUnmounted, ref } from 'vue'
import { ElMessage } from 'element-plus'
import BrandTopBar from './BrandTopBar.vue'
import { expandBrandFolderRecursive, type BrandExpandFolderItem } from '@/shared/api/brand'
import {
  deleteDeleteBrandHistory,
  getDeleteBrandHistory,
  getDeleteBrandTaskDetails,
  getDeleteBrandTaskDownloadUrl,
  runDeleteBrand,
  type DeleteBrandPreviewRow,
  type DeleteBrandResultItem,
  type DeleteBrandRunVo,
  type DeleteBrandTaskDetailVo,
} from '@/shared/api/java-modules'
import { getPywebviewApi, type UploadedJavaFile } from '@/shared/bridges/pywebview'

interface StoredCurrentTask {
  taskId: number
  items: DeleteBrandResultItem[]
  createdAt: number
  queuePushResult?: string
  queuePayloadText?: string
}

function getStorageKey() {
  const uid = typeof window !== 'undefined' ? window.localStorage.getItem('uid') || '0' : '0'
  return `delete-brand:current-tasks:${uid}`
}

const selectedPaths = ref<string[]>([])
const uploadedFiles = ref<UploadedJavaFile[]>([])
const running = ref(false)
const resultItems = ref<DeleteBrandResultItem[]>([])
const sessionTasks = ref<StoredCurrentTask[]>([])
const historyItems = ref<DeleteBrandResultItem[]>([])
const summary = ref<DeleteBrandRunVo>({ total: 0, successCount: 0, failedCount: 0, items: [] })
const queuePushResult = ref('')
const queuePayloadText = ref('')
const taskDetails = ref<Record<number, DeleteBrandTaskDetailVo>>({})
const pollTimer = ref<number | null>(null)
const pollingInFlight = ref(false)
const chainStarted = ref(false)
const activeItemKey = ref('')
const autoAdvancing = ref(false)
const displayPaths = computed(() => selectedPaths.value.slice(0, 10))

const currentSectionItems = computed(() => {
  const allCurrent: DeleteBrandResultItem[] = [];
  sessionTasks.value.forEach(task => {
    allCurrent.push(...task.items);
  });
  return allCurrent;
});

function loadSessionTasksFromStorage() {
  try {
    const raw = typeof window !== 'undefined' ? window.localStorage.getItem(getStorageKey()) : null
    if (raw) {
      sessionTasks.value = JSON.parse(raw)
      if (sessionTasks.value.length > 0) {
        const lastTask = sessionTasks.value[sessionTasks.value.length - 1]
        queuePushResult.value = lastTask.queuePushResult || ''
        queuePayloadText.value = lastTask.queuePayloadText || ''
      }
    } else {
      sessionTasks.value = []
    }
  } catch {
    sessionTasks.value = []
  }
}

function saveSessionTask(taskId: number, items: DeleteBrandResultItem[], pushResult?: string, payloadText?: string) {
  const validItems = items.filter(i => i.matchStatus === 'MATCHED' && i.success !== false)
  if (validItems.length === 0) return

  const newTask: StoredCurrentTask = {
    taskId,
    items: validItems,
    createdAt: Date.now(),
    queuePushResult: pushResult,
    queuePayloadText: payloadText
  }
  const existingIndex = sessionTasks.value.findIndex(t => t.taskId === taskId)
  if (existingIndex >= 0) {
    sessionTasks.value[existingIndex] = newTask
  } else {
    sessionTasks.value.push(newTask)
  }
  if (typeof window !== 'undefined') {
    window.localStorage.setItem(getStorageKey(), JSON.stringify(sessionTasks.value))
  }
}

function removeSessionTaskFromStorage(taskId: number) {
  const oldLen = sessionTasks.value.length
  sessionTasks.value = sessionTasks.value.filter(t => t.taskId !== taskId)
  if (sessionTasks.value.length !== oldLen && typeof window !== 'undefined') {
    window.localStorage.setItem(getStorageKey(), JSON.stringify(sessionTasks.value))
  }
}


const historySectionItems = computed(() =>
  historyItems.value.filter(
    (item) => !currentSectionItems.value.some(c => c.taskId === item.taskId || (c.resultId && c.resultId === item.resultId))
  ),
);
const hasVisibleItems = computed(() => currentSectionItems.value.length > 0 || historySectionItems.value.length > 0)

function getTaskStatus(taskId?: number) {
  if (!taskId) return ''
  return taskDetails.value[taskId]?.task?.status || ''
}

function getDisplayError(item: DeleteBrandResultItem) {
  if (item.error) return item.error
  if (item.matchStatus && item.matchStatus !== 'MATCHED') {
    return item.matchMessage || ''
  }
  const taskId = item.taskId
  if (!taskId) return ''
  return taskDetails.value[taskId]?.task?.errorMessage || ''
}

function shouldShowProgress(item: DeleteBrandResultItem) {
  const qs = getQueueStatus(item)
  return qs === '已入队' || qs === '处理中'
}


function normalizeDeleteBrandItems(items: DeleteBrandResultItem[]) {
  return items.map((item) => {
    if (item.matchStatus === 'MATCHED') {
      return item
    }
    return {
      ...item,
      matched: false,
      openStoreUrl: undefined,
      error: item.error || undefined,
    }
  })
}

function formatMatchResult(item: DeleteBrandResultItem) {
  if (item.matchStatus === 'MATCHED') {
    return `已匹配 ${item.shopId || ''}`.trim()
  }
  if (item.matchMessage) {
    return item.matchMessage
  }
  if (item.matchStatus === 'CONFLICT') {
    return '存在多个同名店铺，请人工确认'
  }
  if (item.matchStatus === 'PENDING' || item.matchStatus === 'INDEX_STALE') {
    return '店铺索引暂未就绪'
  }
  if (item.matchStatus) {
    return item.matchStatus
  }
  return item.matched ? `已匹配 ${item.shopId || ''}`.trim() : '待匹配'
}

function mergeVisibleItems() {
  resultItems.value = [...currentSectionItems.value, ...historySectionItems.value]
}

function syncResultState() {
  mergeVisibleItems()
  updateSummary(resultItems.value)
}

function updateSummary(items: DeleteBrandResultItem[]) {
  summary.value = {
    total: items.length,
    successCount: items.filter((item) => item.success).length,
    failedCount: items.filter((item) => !item.success).length,
    items,
  }
}

function formatProgress(taskId: number) {
  if (!taskId) return ''
  const detail = taskDetails.value[taskId]
  const info = detail?.line_progress?.info
  if (!detail?.line_progress?.has_progress || !info) {
    const status = detail?.task?.status
    return status ? `任务状态：${status}` : ''
  }

  const parts: string[] = []
  if (info.phase) parts.push(`阶段：${info.phase}`)
  if (info.file_index && info.file_total) parts.push(`文件：${info.file_index}/${info.file_total}`)
  if (info.file_name) parts.push(`当前文件：${info.file_name}`)
  if (info.current_line != null && info.total_lines != null) {
    parts.push(`进度：${info.current_line}/${info.total_lines}`)
  }
  if (info.current_country) parts.push(`国家：${info.current_country}`)
  if (info.current_asin) parts.push(`ASIN：${info.current_asin}`)
  if (info.finished_files != null) parts.push(`已完成文件：${info.finished_files}`)
  return parts.join('｜')
}

function formatProgressPercent(taskId: number) {
  if (!taskId) return 0
  const info = taskDetails.value[taskId]?.line_progress?.info
  if (!info) return 0

  if (info.current_line != null && info.total_lines && info.total_lines > 0) {
    return Math.max(0, Math.min(100, Math.round((info.current_line / info.total_lines) * 100)))
  }
  if (info.finished_files != null && info.file_total && info.file_total > 0) {
    return Math.max(0, Math.min(100, Math.round((info.finished_files / info.file_total) * 100)))
  }
  const status = taskDetails.value[taskId]?.task?.status
  return status === 'SUCCESS' ? 100 : 0
}

function isTaskTerminal(taskId: number) {
  const status = taskDetails.value[taskId]?.task?.status
  return status === 'SUCCESS' || status === 'FAILED'
}

function getPollingTaskIds() {
  const ids = new Set<number>()
  sessionTasks.value.forEach(task => {
    // 只轮询有文件被推给 Python 的任务
    if (task.items.some(i => (i as any)._pushed)) {
      ids.add(task.taskId)
    }
  })
  return Array.from(ids)
}

function getQueueStatus(item: DeleteBrandResultItem) {
  const taskId = item.taskId
  if (!taskId) return ''
  const sessionTask = sessionTasks.value.find(t => t.taskId === taskId)
  if (!sessionTask) return ''

  const status = getTaskStatus(taskId)
  if (status === 'SUCCESS' || status === 'FAILED' || item.taskStatus === 'SUCCESS' || item.taskStatus === 'FAILED') {
    return '已被全局判定为终态'
  }

  const sessionItem = sessionTask.items.find(i => i.resultId === item.resultId || i.sourceFilename === item.sourceFilename)

  const info = taskDetails.value[taskId]?.line_progress

  // 此时这个特定文件是否正好被后端报了进度名
  if (status === 'RUNNING' && info?.has_progress && info?.info?.file_name === item.sourceFilename) {
    return '处理中'
  }

  // 查查是否已经完结了这个特定文件
  const detail = taskDetails.value[taskId]
  if (detail?.items) {
    // 后端返回的 items 是 `resultJson` 解析来的，里面只含有已经做完的！
    const finished = detail.items.find((i: DeleteBrandResultItem) => i.sourceFilename === item.sourceFilename)
    if (finished) {
      return '本文件解析完毕'
    }
  }

  if (sessionItem && (sessionItem as any)._pushed) {
    return '已入队'
  }

  return '未入队'
}

function canDownloadTaskResult(item: DeleteBrandResultItem) {
  if (item.downloadUrl) return true

  const taskId = item.taskId
  if (!taskId) return false
  const status = taskDetails.value[taskId]?.task?.status
  return status === 'SUCCESS'
}

function mergeTaskDetailItemsIntoSession(detail: DeleteBrandTaskDetailVo) {
  const taskId = detail?.task?.id
  if (!taskId || !detail?.items?.length) return false
  const sessionTask = sessionTasks.value.find(t => t.taskId === taskId)
  if (!sessionTask) return false

  let changed = false
  const mergedItems = sessionTask.items.map((item) => {
    const latest = detail.items?.find((candidate) => candidate.resultId === item.resultId || candidate.sourceFilename === item.sourceFilename)
    if (!latest) return item
    const merged = {
      ...item,
      ...latest,
      success: item.success ?? latest.success,
    }
    if (JSON.stringify(merged) !== JSON.stringify(item)) {
      changed = true
    }
    return merged
  })

  const validItems = mergedItems.filter(i => i.matchStatus === 'MATCHED' && i.success !== false)
  if (JSON.stringify(validItems) !== JSON.stringify(sessionTask.items)) {
    sessionTask.items = validItems
    changed = true
  }

  if (changed && typeof window !== 'undefined') {
    window.localStorage.setItem(getStorageKey(), JSON.stringify(sessionTasks.value))
  }
  return changed
}

async function refreshTaskDetails(taskIds?: number[]) {
  const ids = taskIds || getPollingTaskIds()
  if (!ids.length) return

  try {
    const batch = await getDeleteBrandTaskDetails(ids)
    let changed = false
    for (const detail of batch.items || []) {
      const id = detail?.task?.id
      if (typeof id === 'number' && id > 0) {
        taskDetails.value[id] = detail
        if (mergeTaskDetailItemsIntoSession(detail)) {
          changed = true
        }
      }
    }
    if (changed) {
      syncResultState()
    }
  } catch {
    // ignore polling failures
  }
}

function getPollIntervalMs() {
  return document.visibilityState === 'visible' ? 4500 : 10000
}

function scheduleNextPoll(immediate = false) {
  if (pollTimer.value) {
    if (!immediate) return
    clearTimeout(pollTimer.value)
    pollTimer.value = null
  }

  const executePoll = async () => {
    pollTimer.value = null
    if (pollingInFlight.value) {
      scheduleNextPoll()
      return
    }

    const taskIds = getPollingTaskIds()
    if (!taskIds.length) return

    pollingInFlight.value = true
    let stateChanged = false
    try {
      await refreshTaskDetails(taskIds)
      await maybeAutoAdvance()
      for (const taskId of taskIds) {
        if (isTaskTerminal(taskId)) {
          removeSessionTaskFromStorage(taskId)
          stateChanged = true
        }
      }
    } finally {
      pollingInFlight.value = false
    }

    if (stateChanged) {
      loadHistory()
      syncResultState()
    }

    if (getPollingTaskIds().length > 0) {
      scheduleNextPoll()
    }
  }

  if (immediate) {
    executePoll()
  } else {
    pollTimer.value = window.setTimeout(executePoll, getPollIntervalMs())
  }
}

function ensurePolling(immediate = false) {
  if (pollTimer.value && !immediate) return
  scheduleNextPoll(immediate)
}

function getTaskStatusInfo(item: DeleteBrandResultItem) {
  // 1. 优先查实时详情中的状态
  const status = item.taskId ? taskDetails.value[item.taskId]?.task?.status : null
  if (status === 'SUCCESS') return { className: 'success', text: '已完成' }
  if (status === 'FAILED') return { className: 'failed', text: '失败' }
  if (status === 'RUNNING') return { className: 'running', text: '执行中' }

  // 2. 其次看 history 接口带回来的后端任务状态
  if (item.taskStatus === 'SUCCESS') return { className: 'success', text: '已完成' }
  if (item.taskStatus === 'FAILED') return { className: 'failed', text: '失败' }
  if (item.taskStatus === 'RUNNING') return { className: 'running', text: '执行中' }

  // 3. 最后根据 item 本身的 success 标识兜底
  if (item.success) return { className: 'success', text: '已完成' }
  return { className: 'failed', text: '失败' }
}

function stopPolling() {
  if (pollTimer.value) {
    window.clearTimeout(pollTimer.value)
    pollTimer.value = null
  }
}

async function uploadPathsToJava(paths: Array<string | BrandExpandFolderItem>) {
  const api = getPywebviewApi()
  if (!api?.upload_file_to_java) {
    throw new Error('当前桌面端未提供文件上传桥接能力')
  }
  const uploaded: UploadedJavaFile[] = []
  for (const item of paths) {
    const filePath = typeof item === 'string' ? item : item.absolutePath
    const relativePath = typeof item === 'string' ? undefined : item.relativePath
    const result = await api.upload_file_to_java(filePath, relativePath)
    if (!result?.success || !result.data) {
      throw new Error(result?.error || result?.message || `上传失败：${filePath}`)
    }
    uploaded.push(result.data)
  }
  return uploaded
}

async function selectFiles() {
  const api = getPywebviewApi()
  if (!api?.select_brand_xlsx_files) {
    ElMessage.warning('当前环境不支持文件选择，请在本机客户端中打开')
    return
  }
  try {
    const paths = await api.select_brand_xlsx_files()
    if (!paths?.length) return
    selectedPaths.value = paths
    uploadedFiles.value = await uploadPathsToJava(paths)
    ElMessage.success(`已选择 ${paths.length} 个删除品牌文件`)
  } catch (error) {
    ElMessage.error(error instanceof Error ? error.message : '选择失败')
  }
}

async function selectFolder() {
  const api = getPywebviewApi()
  if (!api?.select_brand_folder) {
    ElMessage.warning('当前环境不支持文件夹选择，请在本机客户端中打开')
    return
  }

  try {
    const folder = await api.select_brand_folder()
    if (!folder) return
    const result = await expandBrandFolderRecursive(folder)
    if (!result.success || !result.items?.length) {
      ElMessage.warning(result.error || '该文件夹下没有 xlsx 文件')
      return
    }
    selectedPaths.value = result.items.map((item) => item.relativePath || item.absolutePath)
    uploadedFiles.value = await uploadPathsToJava(result.items)
    ElMessage.success(`已选择文件夹内 ${result.items.length} 个 xlsx 文件`)
  } catch (error) {
    ElMessage.error(error instanceof Error ? error.message : '选择失败')
  }
}

async function submitRun() {
  if (!uploadedFiles.value.length) {
    ElMessage.warning('请先选择待处理文件')
    return
  }
  try {
    running.value = true
    const result = await runDeleteBrand({
      files: uploadedFiles.value.map((item) => ({
        fileKey: item.fileKey,
        originalFilename: item.originalFilename,
        relativePath: item.relativePath,
      })),
    })
    const normalizedItems = normalizeDeleteBrandItems(result.items || [])
    const hasMatchedItems = normalizedItems.some((item) => item.matchStatus === 'MATCHED')
    const hasPendingItems = normalizedItems.some((item) => item.matchStatus && item.matchStatus !== 'MATCHED')

    queuePushResult.value = '解析完成，等待手动点击打开紫鸟进行单任务处理'
    queuePayloadText.value = ''

    if (normalizedItems.length && normalizedItems[0].taskId) {
      saveSessionTask(normalizedItems[0].taskId, normalizedItems, queuePushResult.value, queuePayloadText.value)
    }
    syncResultState()

    if (hasPendingItems) {
      ElMessage.warning('部分文件尚未命中可用店铺索引，已保留状态信息，请等待后台刷新后重试。')
    } else if (hasMatchedItems) {
      ElMessage.success('删除品牌解析完成，请手动推送')
    } else {
      ElMessage.warning('当前没有可推送的已匹配文件，请先等待店铺索引刷新。')
    }

    // 更新历史记录，以展示那些未进入队列的失败项
    await loadHistory()
  } catch (error) {
    ElMessage.error(error instanceof Error ? error.message : '执行失败')
  } finally {
    running.value = false
  }
}

async function downloadTaskResult(item: DeleteBrandResultItem) {
  const taskId = item.taskId
  if (!taskId) {
    ElMessage.warning('未找到任务ID')
    return
  }
  const api = getPywebviewApi()
  const url = getDeleteBrandTaskDownloadUrl(taskId)
  const filename =
    item.outputFilename ||
    item.sourceFilename ||
    `delete-brand_${taskId}.xlsx`

  if (api?.save_file_from_url) {
    const result = await api.save_file_from_url(url, filename)
    if (result.success) {
      ElMessage.success(`已保存：${result.path || filename}`)
    } else if (result.error && result.error !== '用户取消') {
      ElMessage.error(result.error)
    }
    return
  }

  window.open(url, '_blank')
}

async function loadHistory() {
  try {
    const response = await getDeleteBrandHistory()
    historyItems.value = normalizeDeleteBrandItems(response.items || [])
    syncResultState()

    // 关键：页面加载历史后，立刻拉取详情触发状态机
    await refreshTaskDetails()
    ensurePolling(true)
  } catch (err) {
    console.error('loadHistory error:', err)
  }
}

function removeRecordFromView(resultId: number) {
  sessionTasks.value.forEach(st => {
    st.items = st.items.filter(item => item.resultId !== resultId)
  })
  const oldLen = sessionTasks.value.length
  sessionTasks.value = sessionTasks.value.filter(st => st.items.length > 0)
  if (sessionTasks.value.length !== oldLen && typeof window !== 'undefined') {
    window.localStorage.setItem(getStorageKey(), JSON.stringify(sessionTasks.value))
  }

  historyItems.value = historyItems.value.filter((item) => item.resultId !== resultId)

  syncResultState()

  if (getPollingTaskIds().length === 0) {
    stopPolling()
  }
}

async function deleteHistoryRecord(resultId: number) {
  try {
    await deleteDeleteBrandHistory(resultId)
    removeRecordFromView(resultId)
    await loadHistory()
    ElMessage.success('已删除')
  } catch (error) {
    const message = error instanceof Error ? error.message : '删除失败'
    // 后端可能已被清理/重复点击导致「记录不存在」，前端也应立即移除并停止轮询
    if (typeof message === 'string' && message.includes('记录不存在')) {
      removeRecordFromView(resultId)
      ElMessage.success('已删除')
      return
    }
    ElMessage.error(message)
  }
}

function formatPreview(rows: DeleteBrandPreviewRow[]) {
  const preview = rows.slice(0, 5).map((item) => `${item.country}:${item.asin}${item.status ? `（${item.status}）` : ''}`)
  const hiddenCount = rows.length - preview.length
  return hiddenCount > 0 ? `${preview.join('、')} 等 ${rows.length} 条` : preview.join('、')
}

function isPythonQueueBusy() {
  for (const task of sessionTasks.value) {
    for (const item of task.items) {
      const qs = getQueueStatus(item)
      if (qs === '已入队' || qs === '处理中') {
        return true
      }
    }
  }
  return false
}

function getItemKey(item: DeleteBrandResultItem) {
  if (item.resultId != null) return `result:${item.resultId}`
  return `task:${item.taskId || 0}:${item.sourceFilename || ''}`
}

function findNextAutoRunnableItem() {
  return currentSectionItems.value.find((item) => {
    if (!item.openStoreUrl) return false
    if (getItemKey(item) === activeItemKey.value) return false
    return getQueueStatus(item) === '未入队'
  })
}

async function runItem(item: DeleteBrandResultItem, options?: { auto?: boolean }) {
  if (options?.auto && isPythonQueueBusy()) {
    return false
  }

  const api = getPywebviewApi()

  const taskId = item.taskId
  if (!taskId) return false

  const sessionTask = sessionTasks.value.find(t => t.taskId === taskId)
  if (!sessionTask) return false

  if (!api?.enqueue_json) {
    ElMessage.error('当前环境未启用 pywebview enqueue_json（浏览器环境不会推送）')
    return false
  }

  const payload = {
    type: 'delete-brand-run',
    ts: Date.now(),
    data: {
      taskId: taskId,
      items: [item]
    },
  }

  queuePayloadText.value = JSON.stringify(payload, null, 2)
  const pushResult = await api.enqueue_json(payload)
  let qpr = ''
  if (pushResult?.success) {
    qpr = `已推送文件 ${item.sourceFilename}，当前队列长度：${pushResult.queue_size ?? '-'}`

    const sessionItem = sessionTask.items.find(i => i.resultId === item.resultId || i.sourceFilename === item.sourceFilename)
    if (sessionItem) {
      (sessionItem as any)._pushed = true
    }
    activeItemKey.value = getItemKey(item)
    saveSessionTask(taskId, sessionTask.items, qpr, queuePayloadText.value)
    ensurePolling(true)
  } else {
    qpr = `推送到 Python 队列失败：${pushResult?.error || '未知错误'}`
  }
  queuePushResult.value = qpr
  return Boolean(pushResult?.success)
}

async function maybeAutoAdvance() {
  if (!chainStarted.value || autoAdvancing.value) return
  if (isPythonQueueBusy()) return

  const currentKey = activeItemKey.value
  if (currentKey) {
    const currentItem = currentSectionItems.value.find(item => getItemKey(item) === currentKey)
    if (currentItem) {
      const status = getQueueStatus(currentItem)
      if (status === '已入队' || status === '处理中') {
        return
      }
    }
  }

  const nextItem = findNextAutoRunnableItem()
  if (!nextItem) {
    activeItemKey.value = ''
    chainStarted.value = false
    return
  }

  autoAdvancing.value = true
  try {
    const started = await runItem(nextItem, { auto: true })
    if (!started) {
      chainStarted.value = false
    }
  } finally {
    autoAdvancing.value = false
  }
}

async function triggerItemRun(item: DeleteBrandResultItem) {
  chainStarted.value = true
  const started = await runItem(item)
  if (!started) {
    chainStarted.value = false
    activeItemKey.value = ''
  }
}

onMounted(() => {
  loadSessionTasksFromStorage()
  const taskIds = getPollingTaskIds()
  if (taskIds.length > 0) {
    refreshTaskDetails(taskIds).then(() => {
      let stateChanged = false
      for (const taskId of taskIds) {
        if (isTaskTerminal(taskId)) {
          removeSessionTaskFromStorage(taskId)
          stateChanged = true
        }
      }
      if (stateChanged) {
        syncResultState()
      }
      ensurePolling(true)
    })
  } else {
    syncResultState()
  }
  loadHistory().catch(() => undefined)
})

onUnmounted(() => {
  stopPolling()
})

</script>

<style scoped>
.queue-debug-card {
  margin-top: 18px;
  padding: 14px;
  border: 1px solid #2a2a2a;
  border-radius: 10px;
  background: #202020;
}

.queue-debug-title {
  margin-bottom: 8px;
}

.queue-debug-line {
  color: #b8c1cc;
  font-size: 12px;
  line-height: 1.6;
  margin-bottom: 8px;
}

.queue-debug-payload {
  margin: 0;
  max-height: 220px;
  overflow: auto;
  padding: 10px;
  border-radius: 8px;
  background: #141414;
  color: #8fd3ff;
  font-size: 12px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-all;
}

.module-page {
  min-height: 100vh;
  background: #1a1a1a;
}

.main-content {
  display: flex;
  min-height: calc(100vh - 56px);
  height: calc(100vh - 56px);
}

.left-panel {
  width: 380px;
  background: #1e1e1e;
  padding: 20px;
  overflow-y: auto;
  border-right: 1px solid #2a2a2a;
}

.right-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: #1a1a1a;
}

.section-title {
  font-size: 13px;
  color: #bbb;
  margin-bottom: 10px;
}

.upload-zone {
  border: 1px dashed #3a3a3a;
  border-radius: 10px;
  padding: 24px;
  text-align: center;
  background: #252525;
  margin-bottom: 20px;
  transition: all 0.2s ease;
}

.upload-zone:hover {
  border-color: #3498db;
  background: #2a2a2a;
}

.hint {
  color: #888;
  font-size: 13px;
  margin-bottom: 12px;
  line-height: 1.5;
}

.btns {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

.opt-btn,
.btn-run,
.download,
.btn-delete {
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.opt-btn {
  padding: 8px 16px;
  font-size: 13px;
  color: #ccc;
  background: #2a2a2a;
  border: 1px solid #3a3a3a;
  border-radius: 6px;
}

.opt-btn:hover {
  color: #3498db;
  background: #333;
  border-color: #3498db;
}

.selected-files {
  margin-top: 14px;
  font-size: 12px;
  color: #888;
  max-height: 112px;
  overflow-y: auto;
  text-align: left;
}

.selected-files span {
  display: block;
  margin: 4px 0;
  word-break: break-all;
}

.more-line {
  color: #b8c1cc;
}

.split-selected-files {
  max-height: 120px;
  min-height: 72px;
  padding-right: 4px;
}

.option-group {
  margin-bottom: 20px;
}

.radio-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  padding: 10px 12px;
  border-radius: 8px;
  background: #252525;
  border: 1px solid #2a2a2a;
  margin-bottom: 8px;
  transition: all 0.2s ease;
}

.radio-item:hover,
.radio-item.active {
  background: #2a2a2a;
  border-color: #3a3a3a;
}

.radio-item input {
  margin-top: 3px;
}

.label {
  font-weight: 500;
  color: #e0e0e0;
  font-size: 13px;
}

.desc {
  font-size: 12px;
  color: #888;
  margin-top: 2px;
  line-height: 1.5;
  font-weight: 400;
}

.run-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 12px;
  margin-top: 16px;
}

.btn-run {
  padding: 10px 22px;
  background: #3498db;
  color: #fff;
  border-radius: 8px;
  font-size: 14px;
}

.btn-run:hover {
  background: #2980b9;
}

.btn-run:disabled {
  background: #555;
  color: #999;
  cursor: not-allowed;
}

.loading-msg {
  color: #3498db;
  font-size: 13px;
}

.panel-header {
  padding: 16px 20px;
  border-bottom: 1px solid #2a2a2a;
  font-size: 15px;
  font-weight: 600;
  color: #ddd;
}

.task-list-wrap {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
}

.task-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.task-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
  border: 1px solid #2a2a2a;
  border-radius: 8px;
  margin-bottom: 10px;
  background: #1e1e1e;
}

.split-result-item {
  align-items: flex-start;
}

.left {
  flex: 1;
  min-width: 0;
}

.split-result-main {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.id {
  display: inline-block;
  font-weight: 600;
  color: #e0e0e0;
  font-size: 13px;
}

.files {
  font-size: 12px;
  color: #888;
  margin-top: 4px;
}

.time {
  font-size: 12px;
  color: #666;
  margin-top: 2px;
}

.split-entry-list {
  line-height: 1.6;
  word-break: break-all;
  max-width: 100%;
}

.delete-brand-preview {
  white-space: normal;
}

.delete-brand-progress-block {
  margin-top: 8px;
}

.delete-brand-progress-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
  font-size: 12px;
  color: #8fbfff;
}

.delete-brand-progress-bar {
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.delete-brand-progress-bar-fill {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #2d8cf0 0%, #4db3ff 100%);
  transition: width 0.3s ease;
}

.delete-brand-progress {
  color: #69b6ff;
  line-height: 1.6;
  white-space: normal;
  margin-top: 6px;
}

.task-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.split-result-actions {
  flex-shrink: 0;
  min-width: 180px;
  justify-content: flex-end;
  align-self: center;
}

.status {
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  white-space: nowrap;
}

.status.success {
  background: rgba(46, 204, 113, 0.18);
  color: #2ecc71;
}

.status.failed {
  background: rgba(231, 76, 60, 0.18);
  color: #ff6b6b;
}

.status.running {
  background: rgba(52, 152, 219, 0.18);
  color: #3498db;
}

.download {
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 12px;
  background: rgba(52, 152, 219, 0.18);
  color: #69b6ff;
}

.download:hover {
  background: rgba(52, 152, 219, 0.28);
}

.btn-delete {
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 12px;
  background: rgba(231, 76, 60, 0.12);
  color: #ff8f8f;
}

.btn-delete:hover {
  background: rgba(231, 76, 60, 0.22);
}

.empty-tasks {
  color: #666;
  font-size: 13px;
  padding: 24px 8px;
}

.clean-placeholder {
  max-height: 112px;
}

.clean-result-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 220px));
  gap: 16px;
  margin-bottom: 18px;
}

.summary-card {
  padding: 16px 18px;
  border: 1px solid #2a2a2a;
  border-radius: 10px;
  background: #1e1e1e;
}

.summary-card strong {
  display: block;
  margin-top: 8px;
  font-size: 24px;
  color: #eaf4ff;
}

.summary-label {
  font-size: 12px;
  color: #8d8d8d;
}

.result-list-wrap {
  border: 1px solid #2a2a2a;
  border-radius: 10px;
  background: #1e1e1e;
  min-height: 260px;
}

.result-list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid #2a2a2a;
  font-size: 14px;
  color: #ddd;
}

@media (max-width: 1100px) {
  .main-content {
    flex-direction: column;
    height: auto;
  }

  .left-panel {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid #2a2a2a;
  }

  .right-panel {
    min-height: 420px;
  }

  .task-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .task-right {
    width: 100%;
    justify-content: flex-start;
  }

  .split-result-actions {
    min-width: 0;
    align-self: flex-start;
  }

  .clean-result-summary {
    grid-template-columns: 1fr;
  }
}
</style>
