ADD file via upload

1.0 pages rollcall.js

@@ -0,0 +1,121 @@
+const db = wx.cloud.database();
+const app = getApp();
+
+Page({
+  data: {
+    students: [],
+    selectedStudent: null,
+    score: ''
+  },
+
+  onLoad: function() {
+    this.getStudents();
+  },
+
+  // 获取学生列表
+  getStudents: function() {
+    db.collection('students').get().then(res => {
+      console.log('Students retrieved:', res.data);
+      if (res.data && res.data.length > 0) {
+        this.setData({
+          students: res.data
+        });
+        // 将学生列表存储到全局数据中
+        app.globalData.students = res.data;
+      } else {
+        console.warn('No students found in the database.');
+        wx.showToast({
+          title: '没有学生信息',
+          icon: 'none'
+        });
+      }
+    }).catch(err => {
+      console.error('Failed to get students:', err);
+      wx.showToast({
+        title: '获取学生信息失败',
+        icon: 'none'
+      });
+    });
+  },
+
+  // 随机点名
+  randomRollCall: function() {
+    const students = this.data.students;
+    if (students.length === 0) {
+      wx.showToast({
+        title: '没有学生信息',
+        icon: 'none'
+      });
+      return;
+    }
+
+    const totalPoints = students.reduce((sum, student) => sum + Math.max(0, 10 - student.points), 0);
+    let randomPoint = Math.random() * totalPoints;
+    let cumulativePoint = 0;
+
+    let selectedStudent = null;
+    for (const student of students) {
+      cumulativePoint += Math.max(0, 10 - student.points);
+      if (randomPoint <= cumulativePoint) {
+        selectedStudent = student;
+        break;
+      }
+    }
+
+    if (selectedStudent) {
+      this.setData({
+        selectedStudent: selectedStudent
+      });
+      wx.showToast({
+        title: `点名成功: ${selectedStudent.name} (${selectedStudent.id})`,
+        icon: 'success'
+      });
+    } else {
+      wx.showToast({
+        title: '点名失败',
+        icon: 'none'
+      });
+    }
+  },
+
+  // 输入评分
+  inputScore: function(e) {
+    this.setData({
+      score: e.detail.value
+    });
+  },
+
+  // 更新积分
+  updatePoints: function() {
+    const student = this.data.selectedStudent;
+    const score = parseFloat(this.data.score);
+
+    if (isNaN(score)) {
+      wx.showToast({
+        title: '请输入有效的评分',
+        icon: 'none'
+      });
+      return;
+    }
+
+    student.points += score;
+
+    db.collection('students').doc(student._id).update({
+      data: {
+        points: student.points
+      }
+    }).then(() => {
+      this.getStudents();
+      wx.showToast({
+        title: '评分成功',
+        icon: 'success'
+      });
+    }).catch(err => {
+      console.error('Failed to update student points:', err);
+      wx.showToast({
+        title: '评分失败',
+        icon: 'none'
+      });
+    });
+  }
+});