<template>
  <div class="welcome">
    <HeaderBar />

    <div class="operation-bar">
      <h2 class="page-title">设备管理</h2>
      <div class="right-operations">
        <el-input placeholder="请输入设备型号或Mac地址查询" v-model="searchKeyword"
                 class="search-input" @keyup.enter.native="handleSearch" clearable />
        <el-button class="btn-search" @click="handleSearch">搜索</el-button>
      </div>
    </div>

    <div class="main-wrapper">
      <div class="content-panel">
        <div class="content-area">
          <el-card class="params-card" shadow="never">
            <el-table
              ref="deviceTable"
              :data="paginatedDeviceList"
              @selection-change="handleSelectionChange"
              class="transparent-table"
              :header-cell-class-name="headerCellClassName"
              border
              stripe>
              <el-table-column type="selection" align="center" width="120"></el-table-column>
              <el-table-column label="设备型号" prop="model" align="center"></el-table-column>
              <el-table-column label="固件版本" prop="firmwareVersion" align="center" width="120"></el-table-column>
              <el-table-column label="Mac地址" prop="macAddress" align="center"></el-table-column>
              <el-table-column label="绑定时间" prop="bindTime" align="center" width="200"></el-table-column>
              <el-table-column label="最近对话" prop="lastConversation" align="center" width="140"></el-table-column>
              <el-table-column label="备注" align="center" width="180">
                <template slot-scope="scope">
                  <el-input v-if="scope.row.isEdit" v-model="scope.row.remark" size="mini"
                    @blur="stopEditRemark(scope.$index)"></el-input>
                  <span v-else>
                    <i v-if="!scope.row.remark" class="el-icon-edit" @click="startEditRemark(scope.$index, scope.row)"></i>
                    <span v-else @click="startEditRemark(scope.$index, scope.row)">
                      {{ scope.row.remark }}
                    </span>
                  </span>
                </template>
              </el-table-column>
              <el-table-column label="OTA升级" align="center" width="120">
                <template slot-scope="scope">
                  <el-switch v-model="scope.row.otaSwitch" size="mini" active-color="#13ce66"
                    inactive-color="#ff4949"></el-switch>
                </template>
              </el-table-column>
              <el-table-column label="操作" align="center" width="80">
                <template slot-scope="scope">
                  <el-button size="mini" type="text" @click="handleUnbind(scope.row.device_id)" style="color: #ff4949">
                    解绑
                  </el-button>
                </template>
              </el-table-column>
            </el-table>

            <div class="table_bottom">
              <div class="ctrl_btn">
                <el-button size="mini" type="primary" class="select-all-btn" @click="toggleAllSelection">
                  {{ isAllSelected ? '取消全选' : '全选' }}
                </el-button>
                <el-button type="success" size="mini" class="add-device-btn" @click="handleAddDevice">
                  新增
                </el-button>
                <el-button size="mini" type="danger" icon="el-icon-delete"
                  @click="deleteSelected">删除</el-button>
              </div>
              <div class="custom-pagination">
                <button class="pagination-btn" :disabled="currentPage === 1" @click="goFirst">首页</button>
                <button class="pagination-btn" :disabled="currentPage === 1" @click="goPrev">上一页</button>
                <button
                  v-for="page in visiblePages"
                  :key="page"
                  class="pagination-btn"
                  :class="{ active: page === currentPage }"
                  @click="goToPage(page)"
                >
                  {{ page }}
                </button>
                <button class="pagination-btn" :disabled="currentPage === pageCount" @click="goNext">下一页</button>
                <span class="total-text">共{{ deviceList.length }}条记录</span>
              </div>
            </div>
          </el-card>
        </div>
      </div>
    </div>

    <div class="copyright">©2025 xiaozhi-esp32-server</div>
    <AddDeviceDialog :visible.sync="addDeviceDialogVisible" :agent-id="currentAgentId"
      @refresh="fetchBindDevices(currentAgentId)" />
  </div>
</template>

<script>
import Api from '@/apis/api';
import AddDeviceDialog from "@/components/AddDeviceDialog.vue";
import HeaderBar from "@/components/HeaderBar.vue";

export default {
  components: { HeaderBar, AddDeviceDialog },
  data() {
    return {
      addDeviceDialogVisible: false,
      selectedDevices: [],
      isAllSelected: false,
      searchKeyword: "",
      currentAgentId: this.$route.query.agentId || '',
      currentPage: 1,
      pageSize: 5,
      deviceList: [],
      loading: false,
      userApi: null,
    };
  },
  computed: {
    filteredDeviceList() {
      const keyword = this.searchKeyword.toLowerCase();
      if (!keyword) return this.deviceList;
      return this.deviceList.filter(device =>
        (device.model && device.model.toLowerCase().includes(keyword)) ||
        (device.macAddress && device.macAddress.toLowerCase().includes(keyword))
      );
    },

    paginatedDeviceList() {
      const start = (this.currentPage - 1) * this.pageSize;
      const end = start + this.pageSize;
      return this.filteredDeviceList.slice(start, end);
    },
    pageCount() {
      return Math.ceil(this.filteredDeviceList.length / this.pageSize);
    },
    visiblePages() {
      const pages = [];
      const maxVisible = 3;
      let start = Math.max(1, this.currentPage - 1);
      let end = Math.min(this.pageCount, start + maxVisible - 1);

      if (end - start + 1 < maxVisible) {
        start = Math.max(1, end - maxVisible + 1);
      }

      for (let i = start; i <= end; i++) {
        pages.push(i);
      }
      return pages;
    }
  },
  mounted() {
    const agentId = this.$route.query.agentId;
    if (agentId) {
      this.fetchBindDevices(agentId);
    }
  },
  methods: {
    handleSearch() {
      this.currentPage = 1;
      this.fetchBindDevices(this.currentAgentId);
    },

    handleSelectionChange(val) {
      this.selectedDevices = val;
      this.isAllSelected = val.length === this.paginatedDeviceList.length;
    },
    toggleAllSelection() {
      this.$refs.deviceTable.toggleAllSelection();
    },

    deleteSelected() {
      if (this.selectedDevices.length === 0) {
        this.$message.warning("请先选择需要删除的设备");
        return;
      }

      this.$confirm(`确定要删除选中的${this.selectedDevices.length}个设备吗？`, '警告', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        const ids = this.selectedDevices.map(device => device.device_id);
        Api.device.batchDeleteDevices(ids, ({ data }) => {
          if (data.code === 0) {
            this.$message.success(`成功删除${this.selectedDevices.length}个设备`);
            this.fetchBindDevices(this.currentAgentId);
          } else {
            this.$message.error(data.msg || '删除失败');
          }
        });
      });
    },

    handleAddDevice() {
      this.addDeviceDialogVisible = true;
    },
    startEditRemark(index, row) {
      this.deviceList[index].isEdit = true;
    },
    stopEditRemark(index) {
      this.deviceList[index].isEdit = false;
    },
    handleUnbind(device_id) {
      this.$confirm('确认要解绑该设备吗？', '警告', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        Api.device.unbindDevice(device_id, ({ data }) => {
          if (data.code === 0) {
            this.$message.success({
              message: '设备解绑成功',
              showClose: true
            });
            this.fetchBindDevices(this.$route.query.agentId);
          } else {
            this.$message.error({
              message: data.msg || '设备解绑失败',
              showClose: true
            });
          }
        });
      });
    },
    goFirst() {
      this.currentPage = 1;
    },
    goPrev() {
      if (this.currentPage > 1) this.currentPage--;
    },
    goNext() {
      if (this.currentPage < this.pageCount) this.currentPage++;
    },
    goToPage(page) {
      this.currentPage = page;
    },

    fetchBindDevices(agentId) {
      this.loading = true;
      Api.device.getAgentBindDevices(agentId, ({ data }) => {
        this.loading = false;
        if (data.code === 0) {
          this.deviceList = data.data.map(device => {
            const bindDate = new Date(device.createDate);
            const formattedBindTime = `${bindDate.getFullYear()}-${(bindDate.getMonth() + 1).toString().padStart(2, '0')}-${bindDate.getDate().toString().padStart(2, '0')} ${bindDate.getHours().toString().padStart(2, '0')}:${bindDate.getMinutes().toString().padStart(2, '0')}:${bindDate.getSeconds().toString().padStart(2, '0')}`;
            return {
              device_id: device.id,
              model: device.board,
              firmwareVersion: device.appVersion,
              macAddress: device.macAddress,
              bindTime: formattedBindTime,
              lastConversation: device.lastConnectedAt,
              remark: device.alias,
              isEdit: false,
              otaSwitch: device.autoUpdate === 1,
              rawBindTime: new Date(device.createDate).getTime()
            };
          })
            .sort((a, b) => a.rawBindTime - b.rawBindTime);
        } else {
          this.$message.error(data.msg || '获取设备列表失败');
        }
      });
    },
    headerCellClassName({ columnIndex }) {
      if (columnIndex === 0) {
        return "custom-selection-header";
      }
      return "";
    }
  }
};
</script>

<style scoped>
.welcome {
  min-width: 900px;
  min-height: 506px;
  height: 100vh;
  display: flex;
  position: relative;
  flex-direction: column;
  background: linear-gradient(to bottom right, #dce8ff, #e4eeff, #e6cbfd);
  background-size: cover;
  -webkit-background-size: cover;
  -o-background-size: cover;
}

.main-wrapper {
  margin: 5px 22px;
  border-radius: 15px;
  min-height: 600px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
  position: relative;
  background: rgba(237, 242, 255, 0.5);
}

.operation-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
}

.page-title {
  font-size: 24px;
  margin: 0;
  color: #2c3e50;
}

.right-operations {
  display: flex;
  gap: 10px;
  margin-left: auto;
}

.search-input {
  width: 280px;
  border-radius: 4px;
}

.btn-search {
  background: linear-gradient(135deg, #6b8cff, #a966ff);
  border: none;
  color: white;
}

.content-panel {
  flex: 1;
  display: flex;
  overflow: hidden;
  height: 100%;
  border-radius: 15px;
  background: transparent;
  border: 1px solid #fff;
}

.content-area {
  flex: 1;
  height: 100%;
  min-width: 600px;
  overflow-x: auto;
  background-color: white;
}

.params-card {
  background: white;
  border: none;
  box-shadow: none;
}

.table_bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 20px;
  padding: 0 20px;
}

.ctrl_btn {
  display: flex;
  gap: 8px;
  padding-left: 26px;
}

.ctrl_btn .el-button {
  min-width: 72px;
  height: 32px;
  padding: 7px 12px;
  border-radius: 4px;
  border: none;
  transition: all 0.3s;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.ctrl_btn .el-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.ctrl_btn .el-button--primary {
  background: #5f70f3;
  color: white;
}

.ctrl_btn .el-button--success {
  background: #5bc98c;
  color: white;
}

.ctrl_btn .el-button--danger {
  background: #fd5b63;
  color: white;
}

.custom-pagination {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 15px;
}

.pagination-btn {
  min-width: 28px;
  height: 32px;
  padding: 0 12px;
  border-radius: 4px;
  border: 1px solid #e4e7ed;
  background: #dee7ff;
  color: #606266;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.pagination-btn:first-child,
.pagination-btn:nth-child(2),
.pagination-btn:nth-last-child(2) {
  min-width: 60px;
}

.pagination-btn:hover {
  background: #d7dce6;
}

.pagination-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.pagination-btn.active {
  background: #5f70f3 !important;
  color: #ffffff !important;
  border-color: #5f70f3 !important;
}

.total-text {
  color: #909399;
  font-size: 14px;
  margin-left: 10px;
}

.copyright {
  text-align: center;
  color: #979db1;
  font-size: 12px;
  font-weight: 400;
  margin-top: auto;
  padding: 30px 0 20px;
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
}

/* 表格样式覆盖 */
:deep(.transparent-table) {
  background: white;
}

:deep(.transparent-table .el-table__header th) {
  background: white !important;
  color: black;
}

:deep(.transparent-table .el-table__body tr td) {
  border-top: 1px solid rgba(0, 0, 0, 0.04);
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

:deep(.el-icon-edit) {
  color: #7079aa;
  cursor: pointer;
}

:deep(.el-icon-edit:hover) {
  color: #5a64b5;
}

:deep(.custom-selection-header .el-checkbox) {
  display: none !important;
}

:deep(.custom-selection-header::after) {
  content: "选择";
  display: inline-block;
  color: black;
  font-weight: bold;
  padding-bottom: 18px;
}
</style>
