修改管理后台

backend/models/ElectronicFence.js

@@ -0,0 +1,243 @@
+const { DataTypes } = require('sequelize')
+const BaseModel = require('./BaseModel')
+const { sequelize } = require('../config/database-simple')
+
+/**
+ * 电子围栏模型
+ */
+class ElectronicFence extends BaseModel {
+  static init(sequelize) {
+    return super.init({
+      id: {
+        type: DataTypes.INTEGER,
+        primaryKey: true,
+        autoIncrement: true,
+        comment: '围栏ID'
+      },
+      name: {
+        type: DataTypes.STRING(100),
+        allowNull: false,
+        comment: '围栏名称'
+      },
+      type: {
+        type: DataTypes.ENUM('collector', 'grazing', 'safety'),
+        allowNull: false,
+        defaultValue: 'collector',
+        comment: '围栏类型: collector-采集器电子围栏, grazing-放牧围栏, safety-安全围栏'
+      },
+      description: {
+        type: DataTypes.TEXT,
+        allowNull: true,
+        comment: '围栏描述'
+      },
+      coordinates: {
+        type: DataTypes.JSON,
+        allowNull: false,
+        comment: '围栏坐标点数组'
+      },
+      center_lng: {
+        type: DataTypes.DECIMAL(10, 7),
+        allowNull: false,
+        comment: '围栏中心经度'
+      },
+      center_lat: {
+        type: DataTypes.DECIMAL(10, 7),
+        allowNull: false,
+        comment: '围栏中心纬度'
+      },
+      area: {
+        type: DataTypes.DECIMAL(10, 4),
+        allowNull: true,
+        comment: '围栏面积(平方米)'
+      },
+      grazing_status: {
+        type: DataTypes.ENUM('grazing', 'not_grazing'),
+        allowNull: false,
+        defaultValue: 'not_grazing',
+        comment: '放牧状态: grazing-放牧中, not_grazing-未放牧'
+      },
+      inside_count: {
+        type: DataTypes.INTEGER,
+        allowNull: false,
+        defaultValue: 0,
+        comment: '安全区域内动物数量'
+      },
+      outside_count: {
+        type: DataTypes.INTEGER,
+        allowNull: false,
+        defaultValue: 0,
+        comment: '安全区域外动物数量'
+      },
+      is_active: {
+        type: DataTypes.BOOLEAN,
+        allowNull: false,
+        defaultValue: true,
+        comment: '是否启用'
+      },
+      created_by: {
+        type: DataTypes.INTEGER,
+        allowNull: true,
+        comment: '创建人ID'
+      },
+      updated_by: {
+        type: DataTypes.INTEGER,
+        allowNull: true,
+        comment: '更新人ID'
+      }
+    }, {
+      sequelize,
+      modelName: 'ElectronicFence',
+      tableName: 'electronic_fences',
+      timestamps: true,
+      createdAt: 'created_at',
+      updatedAt: 'updated_at',
+      comment: '电子围栏表',
+      indexes: [
+        {
+          name: 'idx_fence_name',
+          fields: ['name']
+        },
+        {
+          name: 'idx_fence_type',
+          fields: ['type']
+        },
+        {
+          name: 'idx_fence_center',
+          fields: ['center_lng', 'center_lat']
+        },
+        {
+          name: 'idx_fence_active',
+          fields: ['is_active']
+        }
+      ]
+    })
+  }
+
+  /**
+   * 定义关联关系
+   */
+  static associate(models) {
+    // 围栏与农场关联（可选）
+    this.belongsTo(models.Farm, {
+      foreignKey: 'farm_id',
+      as: 'farm'
+    })
+  }
+
+  /**
+   * 获取围栏类型文本
+   */
+  getTypeText() {
+    const typeMap = {
+      'collector': '采集器电子围栏',
+      'grazing': '放牧围栏',
+      'safety': '安全围栏'
+    }
+    return typeMap[this.type] || '未知类型'
+  }
+
+  /**
+   * 获取放牧状态文本
+   */
+  getGrazingStatusText() {
+    const statusMap = {
+      'grazing': '放牧中',
+      'not_grazing': '未放牧'
+    }
+    return statusMap[this.grazing_status] || '未知状态'
+  }
+
+  /**
+   * 计算围栏面积（简化计算）
+   */
+  calculateArea() {
+    if (!this.coordinates || this.coordinates.length < 3) {
+      return 0
+    }
+
+    // 使用Shoelace公式计算多边形面积
+    let area = 0
+    const coords = this.coordinates
+    
+    for (let i = 0; i < coords.length; i++) {
+      const j = (i + 1) % coords.length
+      area += coords[i].lng * coords[j].lat
+      area -= coords[j].lng * coords[i].lat
+    }
+    
+    // 转换为平方米（粗略计算）
+    return Math.abs(area) * 111000 * 111000 / 2
+  }
+
+  /**
+   * 计算围栏中心点
+   */
+  calculateCenter() {
+    if (!this.coordinates || this.coordinates.length === 0) {
+      return { lng: 0, lat: 0 }
+    }
+
+    let lngSum = 0
+    let latSum = 0
+    
+    this.coordinates.forEach(coord => {
+      lngSum += coord.lng
+      latSum += coord.lat
+    })
+    
+    return {
+      lng: lngSum / this.coordinates.length,
+      lat: latSum / this.coordinates.length
+    }
+  }
+
+  /**
+   * 检查点是否在围栏内
+   */
+  isPointInside(lng, lat) {
+    if (!this.coordinates || this.coordinates.length < 3) {
+      return false
+    }
+
+    let inside = false
+    const coords = this.coordinates
+    
+    for (let i = 0, j = coords.length - 1; i < coords.length; j = i++) {
+      if (((coords[i].lat > lat) !== (coords[j].lat > lat)) &&
+          (lng < (coords[j].lng - coords[i].lng) * (lat - coords[i].lat) / (coords[j].lat - coords[i].lat) + coords[i].lng)) {
+        inside = !inside
+      }
+    }
+    
+    return inside
+  }
+
+  /**
+   * 转换为前端格式
+   */
+  toFrontendFormat() {
+    return {
+      id: this.id,
+      name: this.name,
+      type: this.getTypeText(),
+      description: this.description,
+      coordinates: this.coordinates,
+      center: {
+        lng: this.center_lng,
+        lat: this.center_lat
+      },
+      area: this.area,
+      grazingStatus: this.getGrazingStatusText(),
+      insideCount: this.inside_count,
+      outsideCount: this.outside_count,
+      isActive: this.is_active,
+      createdAt: this.created_at,
+      updatedAt: this.updated_at
+    }
+  }
+}
+
+// 初始化模型
+ElectronicFence.init(sequelize)
+
+module.exports = ElectronicFence