import { computed, ref } from 'vue'

import { watch } from 'vue'

export default {
  name: 'PoliciesView' ,
  setup(props, { emit }) {
    const folderSearch = ref('')
    const activeFolder = ref('差旅规范')
    const selectedDocument = ref(null)

    const folders = [
      { name: '财务知识库', count: 36, icon: 'mdi mdi-folder' },
      { name: '制度政策', count: 8, icon: 'mdi mdi-folder' },
      { name: '报销制度', count: 12, icon: 'mdi mdi-folder-open' },
      { name: '差旅规范', count: 18, icon: 'mdi mdi-folder' },
      { name: '发票管理', count: 14, icon: 'mdi mdi-folder' },
      { name: '税务合规', count: 16, icon: 'mdi mdi-folder' },
      { name: '预算管理', count: 9, icon: 'mdi mdi-folder' },
      { name: '财务共享', count: 7, icon: 'mdi mdi-folder' },
      { name: '培训资料', count: 6, icon: 'mdi mdi-folder' },
      { name: '常见问答', count: 11, icon: 'mdi mdi-folder' }
    ]

    const documents = [
      {
        name: '差旅报销管理办法（2024版）',
        folder: '差旅规范',
        tag: '差旅 / 制度',
        time: '2024-05-12 14:35',
        version: 'v3.2',
        state: '已生效',
        stateTone: 'success',
        owner: '张明',
        icon: 'mdi mdi-file-document-outline-pdf pdf',
        fileType: 'pdf',
        fileTypeLabel: 'PDF 预览',
        summary: '面向员工与财务共享团队的差旅费用标准、审批边界和附件要求。',
        previewPages: [
          {
            title: '差旅报销管理办法（2024版）',
            subtitle: '住宿、交通、审批与附件要求',
            stats: [
              { label: '适用范围', value: '全员' },
              { label: '生效日期', value: '2024-05-12' },
              { label: '更新重点', value: '住宿标准' }
            ],
            blocks: [
              {
                heading: '一、适用范围',
                lines: ['适用于国内差旅申请、预订、报销与借款冲销。', '共享中心审核以出差申请、票据与预算中心为准。']
              },
              {
                heading: '二、住宿标准',
                lines: ['一线城市单晚标准 650 元，超标需附业务说明。', '连续住宿超过 3 晚需补充行程与客户拜访记录。']
              }
            ]
          },
          {
            title: '审批与附件要求',
            subtitle: '流程节点与必要凭证',
            stats: [
              { label: '附件校验', value: '7 项' },
              { label: '审批节点', value: '4 级' },
              { label: '自动拦截', value: '超标 / 重复' }
            ],
            blocks: [
              {
                heading: '三、审批规则',
                lines: ['直属主管审批通过后进入财务复核。', '超预算或超标申请需追加部门负责人审批。']
              },
              {
                heading: '四、附件清单',
                lines: ['机票行程单、酒店发票、住宿水单、出租车发票。', '如存在改签、退票或异常情况，需补充说明材料。']
              }
            ]
          }
        ]
      },
      {
        name: '发票查验规范及操作指引',
        folder: '发票管理',
        tag: '发票 / 操作',
        time: '2024-05-10 10:22',
        version: 'v1.5',
        state: '已生效',
        stateTone: 'success',
        owner: '李娜',
        icon: 'mdi mdi-file-document-outline-word word',
        fileType: 'word',
        fileTypeLabel: 'Word 预览',
        summary: '说明发票验真路径、异常票据处理方式以及入账留痕要求。',
        previewPages: [
          {
            title: '发票查验规范及操作指引',
            subtitle: '验真流程与异常识别',
            stats: [
              { label: '查验入口', value: '3 个' },
              { label: '异常类型', value: '6 类' },
              { label: '责任角色', value: '财务专员' }
            ],
            blocks: [
              {
                heading: '一、查验入口',
                lines: ['优先通过税务查验接口进行自动验真。', '无法自动识别时转人工核验并保留截图。']
              },
              {
                heading: '二、异常票据',
                lines: ['票面抬头不一致、号码重复、跨月补录需重点标注。', '出现红冲票据时需关联原单据并补充说明。']
              }
            ]
          }
        ]
      },
      {
        name: '费用报销标准细则（2024）',
        folder: '报销制度',
        tag: '报销 / 标准',
        time: '2024-05-08 09:16',
        version: 'v2.1',
        state: '已生效',
        stateTone: 'success',
        owner: '王磊',
        icon: 'mdi mdi-file-document-outline-pdf pdf',
        fileType: 'pdf',
        fileTypeLabel: 'PDF 预览',
        summary: '定义招待、差旅、办公采购与培训等费用类型的标准与限制。',
        previewPages: [
          {
            title: '费用报销标准细则（2024）',
            subtitle: '费用口径与报销边界',
            stats: [
              { label: '费用大类', value: '8 类' },
              { label: '更新日期', value: '2024-05-08' },
              { label: '重点事项', value: '招待 / 交通' }
            ],
            blocks: [
              {
                heading: '一、业务招待',
                lines: ['需填写客户单位、参与人数及招待事由。', '单次超过 2000 元需上传审批邮件或会议纪要。']
              },
              {
                heading: '二、交通与差旅',
                lines: ['市内交通按真实票据报销，超标部分需说明。', '夜间出行或跨城交通需关联出差申请。']
              }
            ]
          }
        ]
      },
      {
        name: '差旅费用标准对照表（国内）',
        folder: '差旅规范',
        tag: '差旅 / 标准',
        time: '2024-05-05 08:20',
        version: 'v1.3',
        state: '审批中',
        stateTone: 'warning',
        owner: '陈杰',
        icon: 'mdi mdi-file-document-outline-excel excel',
        fileType: 'excel',
        fileTypeLabel: 'Excel 预览',
        summary: '各城市住宿、餐补与交通等级对照表，供申请与审核环节快速查询。',
        previewPages: [
          {
            title: '差旅费用标准对照表（国内）',
            subtitle: '城市维度对照',
            stats: [
              { label: '覆盖城市', value: '48 个' },
              { label: '住宿档位', value: '4 级' },
              { label: '餐补标准', value: '日维度' }
            ],
            blocks: [
              {
                heading: '一、住宿标准',
                lines: ['北京 / 上海 / 深圳：650 元 / 晚。', '新一线城市：500 元 / 晚，其余城市按 380 元 / 晚执行。']
              },
              {
                heading: '二、交通等级',
                lines: ['总监及以上可乘坐高铁商务座或机票公务舱。', '其他员工默认经济舱、高铁二等座。']
              }
            ]
          }
        ]
      },
      {
        name: '借款管理办法及流程',
        folder: '财务共享',
        tag: '借款 / 流程',
        time: '2024-05-03 11:05',
        version: 'v1.0',
        state: '已生效',
        stateTone: 'success',
        owner: '刘洋',
        icon: 'mdi mdi-file-document-outline-pdf pdf',
        fileType: 'pdf',
        fileTypeLabel: 'PDF 预览',
        summary: '覆盖差旅借款、项目借款和借款冲销的全流程要求。',
        previewPages: [
          {
            title: '借款管理办法及流程',
            subtitle: '借款申请与冲销闭环',
            stats: [
              { label: '适用场景', value: '差旅 / 项目' },
              { label: '冲销时限', value: '30 天' },
              { label: '审批路径', value: '3 级' }
            ],
            blocks: [
              {
                heading: '一、借款申请',
                lines: ['借款申请需绑定预算中心与费用类型。', '超过 5000 元需部门负责人额外审批。']
              },
              {
                heading: '二、冲销要求',
                lines: ['借款发生后 30 日内完成报销与冲销。', '逾期未冲销将纳入月度风险提醒。']
              }
            ]
          }
        ]
      }
    ]

    const filteredFolders = computed(() => {
      const key = folderSearch.value.trim()
      if (!key) return folders
      return folders.filter((folder) => folder.name.includes(key))
    })

    const filteredDocuments = computed(() =>
      documents.filter((doc) => {
        const inFolder = activeFolder.value ? doc.folder === activeFolder.value : true
        return inFolder
      })
    )

    const currentPage = ref(1)
    const pageSize = ref(10)
    const pageSizes = [10, 20, 50]
    const pageSizeOpen = ref(false)

    const totalCount = computed(() => filteredDocuments.value.length)
    const totalPages = computed(() => Math.max(1, Math.ceil(totalCount.value / pageSize.value)))

    const visibleDocuments = computed(() => {
      const start = (currentPage.value - 1) * pageSize.value
      return filteredDocuments.value.slice(start, start + pageSize.value)
    })

    function changePageSize(size) {
      pageSize.value = size
      pageSizeOpen.value = false
      currentPage.value = 1
    }

    watch(filteredDocuments, () => {
      currentPage.value = 1
      pageSizeOpen.value = false
    })

    return {
      folderSearch,
      activeFolder,
      selectedDocument,
      folders,
      documents,
      filteredFolders,
      filteredDocuments,
      currentPage,
      pageSize,
      pageSizes,
      pageSizeOpen,
      totalCount,
      totalPages,
      visibleDocuments,
      changePageSize
    }
  }
}