[Added] Curd Operation

Author: deepti-50

models/semester.js

@@ -0,0 +1,59 @@
+import connector from "#models/databaseUtil";
+const semesterSchema = {
+  number:{Number,enum: [1,2,3,4,5,6,7,8], required:true},
+  academicYear: {
+    type: String,
+    required: true,
+    validate: {
+      validator: (value) => /^20\d{2}$/.test(value),
+      message: (props) => `${props.value} is not a valid year format starting with "2"!`,
+    },
+  },
+  type:{ enum: ["ODD", "EVEN"], required: true },
+
+  startDate: { type: Date, required: true },
+  endDate: { type: Date, required: true },
+};
+
+// eslint-disable-next-line  no-unused-vars
+const Semester = connector.model("Semester", semesterSchema);
+
+//  CURD operations
+async function create(semesterData) {
+    const {
+      number,
+      academicYear,
+      type,
+      startDate,
+      endDate,
+    } = semesterData;
+    const semester = new Semester({
+      number,
+      academicYear,
+      type,
+      startDate,
+      endDate,
+
+    });
+    const semesterDoc = await semester.save();
+    return semesterDoc;
+  }
+  
+  async function read(filter, limit = 1) {
+    const semesterDoc = await Semester.find(filter).limit(limit);
+    return semesterDoc;
+  }
+  
+  async function update(filter, updateObject, options = { multi: true }) {
+    const updateResult = await Semester.updateMany(filter, { $set: updateObject }, options);
+    return updateResult.acknowledged;
+  }
+  
+  async function remove(filter) {
+    const deleteResult = await Semester.deleteMany(filter);
+    return deleteResult.acknowledged;
+  }
+  export default {
+    create, remove, update, read,
+  };
+