Initial Version

server/utils/searchFeatures.js

@@ -0,0 +1,51 @@
+class SearchFeatures {
+    constructor(query, queryString) {
+        this.query = query
+        this.queryString = queryString
+    }
+
+    search() {
+        const keyword = this.queryString.keyword ? {
+            name: {
+                $regex: this.queryString.keyword,
+                $options: "i",
+            }
+        } : {};
+
+        // console.log(keyword);
+
+        this.query = this.query.find({ ...keyword });
+        return this;
+    }
+
+    filter() {
+        const queryCopy = { ...this.queryString }
+
+        // fields to remove for category
+        const removeFields = ["keyword", "page", "limit"];
+
+        // console.log(queryCopy);
+        removeFields.forEach(key => delete queryCopy[key]);
+        // console.log(queryCopy);
+
+        // price filter
+        let queryString = JSON.stringify(queryCopy);
+        queryString = queryString.replace(/\b(gt|gte|lt|lte)\b/g, key => `$${key}`);
+
+        // console.log(JSON.parse(queryString));
+
+        this.query = this.query.find(JSON.parse(queryString));
+        return this;
+    }
+
+    pagination(resultPerPage) {
+        const currentPage = Number(this.queryString.page) || 1;
+
+        const skipProducts = resultPerPage * (currentPage - 1);
+
+        this.query = this.query.limit(resultPerPage).skip(skipProducts);
+        return this;
+    }
+};
+
+module.exports = SearchFeatures;