From a6ce2cf0e89284887dfa90c56888a4f13d228768 Mon Sep 17 00:00:00 2001
From: Rohan-uel <u2700818@uel.ac.uk>
Date: Thu, 5 Dec 2024 23:14:46 +0000
Subject: [PATCH] Update add_book.js

 Allow admins to update book information in the library catalog.
---
 js/add_book.js | 99 ++++++++++++++++++++++++++++++++++----------------
 1 file changed, 67 insertions(+), 32 deletions(-)

diff --git a/js/add_book.js b/js/add_book.js
index 1d9abfb..62daf66 100644
--- a/js/add_book.js
+++ b/js/add_book.js
@@ -1,36 +1,36 @@
+
 $(document).ready(function() {
     var firebaseConfig = {
-    apiKey: "AIzaSyBin1evT-H6jfR49WIhtVPsGMLzbEklIQY",
-    authDomain: "library-management-syste-f2a85.firebaseapp.com",
-    databaseURL: "https://library-management-syste-f2a85.firebaseio.com",
-    projectId: "library-management-syste-f2a85",
-    storageBucket: "library-management-syste-f2a85.appspot.com",
-    messagingSenderId: "914416876417",
-    appId: "1:914416876417:web:bf9e7762c1c283ba"
+        apiKey: "AIzaSyBA2O5kze6cSrMqrUpDYoP5KZepBsNEa4k",
+        authDomain: "library-management-syste-37dc2.firebaseapp.com",
+        databaseURL: "https://library-management-syste-37dc2-default-rtdb.firebaseio.com",
+        projectId: "library-management-syste-37dc2",
+        storageBucket: "library-management-syste-37dc2.firebasestorage.app",
+        messagingSenderId: "962676782645",
+        appId: "1:962676782645:web:c008daf774bcee5a80e37c",
+        measurementId: "G-NZ9VJF0LJ2"
     };
+
     // Initialize Firebase
     firebase.initializeApp(firebaseConfig);
-    
     var db = firebase.firestore();
-    
+
     $("#book-form").submit(function(e) {
         e.preventDefault();
     });
 
     $('#submit').click(function() {
-      add_this();
+        add_this();
     });
 
     firebase.auth().onAuthStateChanged(user => {
-        if(!user) {
+        if (!user) {
             window.location = 'index.html';
-            }
+        }
     });
-
 });
 
-function add_this()
-{
+function add_this() {
     var BookCode = document.getElementById("book_code").value;
     var BookName = document.getElementById("book_name").value;
     var Author1 = document.getElementById("author1").value;
@@ -38,21 +38,56 @@ function add_this()
     var Subject = document.getElementById("Subject").value;
     var tags = document.getElementById("tags").value;
     var db = firebase.firestore();
- 
-    db.collection("books").doc(BookCode).set({
-        bookcode: BookCode,
-        bookname : BookName,
-        author1: Author1,
-        author2: Author2,
-        subject : Subject,
-        tags : tags
-    })
-    .then(function() {
-        console.log("Document successfully written!");
-        window.alert("Successfully Book Added");
-        window.location = 'admin_portal.html';
-    })
-    .catch(function(error) {
-        console.error("Error writing document: ", error);
-    });
+
+    if (!BookCode) {
+        alert("Book Code is required.");
+        return;
+    }
+
+    // Prepare the data for update
+    var updateData = {};
+    if (BookName) updateData.bookname = BookName;
+    if (Author1) updateData.author1 = Author1;
+    if (Author2) updateData.author2 = Author2;
+    if (Subject) updateData.subject = Subject;
+    if (tags) updateData.tags = tags;
+
+    // Check if data exists in Firestore
+    db.collection("books").doc(BookCode).get()
+        .then((doc) => {
+            if (doc.exists) {
+                // If the document exists, update the fields
+                db.collection("books").doc(BookCode).update(updateData)
+                    .then(() => {
+                        alert("Book successfully updated!");
+                        console.log("Update successful!");
+                    })
+                    .catch((error) => {
+                        alert("Error updating document: " + error);
+                        console.error("Error updating document: ", error);
+                    });
+            } else {
+                // If the document does not exist, add the book
+                db.collection("books").doc(BookCode).set({
+                    bookcode: BookCode,
+                    bookname: BookName || "",
+                    author1: Author1 || "",
+                    author2: Author2 || "",
+                    subject: Subject || "",
+                    tags: tags || ""
+                })
+                .then(() => {
+                    alert("Book successfully added!");
+                    console.log("Book added successfully!");
+                })
+                .catch((error) => {
+                    alert("Error adding document: " + error);
+                    console.error("Error adding document: ", error);
+                });
+            }
+        })
+        .catch((error) => {
+            alert("Error fetching document: " + error);
+            console.error("Error fetching document: ", error);
+        });
 }