feat: enhance about us and footer CMS admin panels

- Improve aboutUs controller with better field handling
- Update footer controller with expanded content management
- Refine about admin view templates
- Update appointment and footer admin views
- Add about contract repair migration script
- Update about.json seed data

controllers/footerController.js

@@ -4,6 +4,77 @@ const writeAuditLog = require("../audit/writeAuditLog");
 const diffObject = require("../audit/diffObject");
 const AUDIT_ACTIONS = require("../constants/auditAction");
 
+const isPlainObject = (value) =>
+  value && typeof value === "object" && !Array.isArray(value);
+
+const normalizeFooterImagePath = (value) => {
+  if (!value || typeof value !== "string") return "";
+
+  const trimmed = value.trim();
+  if (!trimmed) return "";
+
+  if (trimmed.startsWith("/uploads/footer/")) {
+    return trimmed;
+  }
+
+  if (trimmed.startsWith("uploads/footer/")) {
+    return `/${trimmed}`;
+  }
+
+  if (/^https?:\/\//i.test(trimmed)) {
+    try {
+      const parsed = new URL(trimmed);
+      if (parsed.pathname.startsWith("/uploads/footer/")) {
+        return parsed.pathname;
+      }
+    } catch (error) {
+      console.warn("Failed to parse footer image URL:", trimmed, error.message);
+    }
+  }
+
+  return trimmed;
+};
+
+const sanitizeFooterData = (data = {}) => {
+  const sanitized = JSON.parse(JSON.stringify(data || {}));
+
+  if (!sanitized.top) {
+    return sanitized;
+  }
+
+  if (typeof sanitized.top.bgImage === "string") {
+    sanitized.top.bgImage = normalizeFooterImagePath(sanitized.top.bgImage);
+  }
+
+  if (sanitized.top.logo && typeof sanitized.top.logo.src === "string") {
+    sanitized.top.logo.src = normalizeFooterImagePath(sanitized.top.logo.src);
+  }
+
+  return sanitized;
+};
+
+const mergeFooterData = (currentValue, incomingValue) => {
+  if (incomingValue === undefined) {
+    return currentValue;
+  }
+
+  if (Array.isArray(incomingValue)) {
+    return incomingValue;
+  }
+
+  if (isPlainObject(currentValue) && isPlainObject(incomingValue)) {
+    const merged = { ...currentValue };
+
+    Object.keys(incomingValue).forEach((key) => {
+      merged[key] = mergeFooterData(currentValue[key], incomingValue[key]);
+    });
+
+    return merged;
+  }
+
+  return incomingValue;
+};
+
 // GET /api/footer - Public API cho website và CMS load dữ liệu
 exports.getFooter = async (req, res) => {
   try {
@@ -42,6 +113,8 @@ exports.updateFooter = async (req, res) => {
       }
     }
 
+    updateData = sanitizeFooterData(updateData);
+
     // Lấy footer hiện tại hoặc tạo mới (giống Header logic)
     let footer = await Footer.findOne();
 
@@ -52,8 +125,9 @@ exports.updateFooter = async (req, res) => {
       console.log("✓ Footer created:", footer._id);
     } else {
       console.log("✓ Found existing footer:", footer._id);
-      // Merge với dữ liệu cũ thay vì overwrite (giống Header)
-      Object.assign(footer, updateData);
+      const mergedData = mergeFooterData(footer.toObject(), updateData);
+      // Use set() so nested footer fields persist correctly in MongoDB
+      footer.set(mergedData);
       await footer.save();
       console.log("✓ Footer updated successfully");
     }
@@ -80,11 +154,10 @@ exports.updateFooter = async (req, res) => {
 exports.index = async (req, res) => {
   try {
     const data = await Footer.getSingle();
-    const processedData = addBaseUrlToImages(data.toObject());
 
     res.render("admin/footer/index", {
       title: "Footer Management",
-      data: processedData,
+      data: data.toObject(),
     });
   } catch (error) {
     console.error("Error in footer index:", error);
@@ -114,6 +187,8 @@ exports.update = async (req, res) => {
       }
     }
 
+    updateData = sanitizeFooterData(updateData);
+
     // Lấy footer hiện tại hoặc tạo mới (giống Header)
     let footer = await Footer.findOne();
 
@@ -130,8 +205,9 @@ exports.update = async (req, res) => {
       req.flash("success_msg", "Footer created successfully");
     } else {
       console.log("✓ Found existing footer:", footer._id);
-      // Merge với dữ liệu cũ (giống Header)
-      Object.assign(footer, updateData);
+      const mergedData = mergeFooterData(footer.toObject(), updateData);
+      // Use set() so nested footer fields persist correctly in MongoDB
+      footer.set(mergedData);
       await footer.save();
 
       // ✅ Capture AFTER state
@@ -166,4 +242,14 @@ exports.update = async (req, res) => {
 
 // Legacy API endpoints (giữ lại cho tương thích)
 exports.api = exports.getFooter;
-exports.getFooterData = exports.getFooter;
+exports.getFooterData = async (req, res) => {
+  try {
+    const footer = await Footer.getSingle();
+    res.json(footer.toObject());
+  } catch (error) {
+    console.error("Error getting footer data for admin:", error);
+    res.status(500).json({
+      error: "Failed to get footer data",
+    });
+  }
+};