feat: add custom hook and component that handles reordering

Author: 6ri4n

src/Reorder/Reorder.js

@@ -0,0 +1,17 @@
+import React from "react";
+
+function Reorder({ index, reorderObj, children }) {
+  return (
+    <div
+      draggable
+      onDragStart={() => (reorderObj.onCardRef.current = index)}
+      onDragEnter={() => (reorderObj.overCardRef.current = index)}
+      onDragEnd={reorderObj.handleSwap}
+      onDragOver={(e) => e.preventDefault()}
+    >
+      {children}
+    </div>
+  );
+}
+
+export default Reorder;

src/Reorder/useReorder.js

@@ -0,0 +1,64 @@
+import { useEffect, useRef, useState } from "react";
+
+const useReorder = (items, setItems, sectionType) => {
+  const onCardRef = useRef(0);
+  const overCardRef = useRef(0);
+  const timeoutRef = useRef(null);
+  const latestItemsRef = useRef(items);
+  const [response, setResponse] = useState(null);
+  const [error, setError] = useState(null);
+
+  const handleSwap = () => {
+    if (timeoutRef.current) {
+      clearTimeout(timeoutRef.current);
+    }
+
+    const updatedItems = [...items];
+    const temp = updatedItems[onCardRef.current];
+    updatedItems[onCardRef.current] = updatedItems[overCardRef.current];
+    updatedItems[overCardRef.current] = temp;
+
+    setItems(updatedItems);
+
+    timeoutRef.current = setTimeout(() => {
+      handleRequest(sectionType);
+    }, 3000);
+  };
+
+  const handleRequest = async (sectionType) => {
+    // sectionType must be a valid resume section, e.g. education, experience, skills
+
+    const baseURL = "http://localhost:5000/resume/";
+    try {
+      const response = await fetch(`${baseURL}${sectionType}`, {
+        method: "PUT",
+        headers: {
+          "Content-Type": "application/json",
+        },
+        body: JSON.stringify({ data: latestItemsRef.current }),
+      });
+
+      if (!response.ok)
+        throw new Error(`HTTP error! Status: ${response.status}`);
+
+      const data = await response.json();
+      setResponse(data);
+      setError(null);
+    } catch (error) {
+      setError(error);
+      console.error(error);
+    }
+  };
+
+  useEffect(() => {
+    latestItemsRef.current = items;
+  }, [items]);
+
+  return {
+    response,
+    error,
+    reorderObj: { handleSwap, onCardRef, overCardRef },
+  };
+};
+
+export default useReorder;