feat: Create new file

models/auditLog.js

@@ -0,0 +1,64 @@
+const mongoose = require("mongoose");
+const AUDIT_ACTIONS = require("../constants/auditAction");
+
+const auditLogSchema = new mongoose.Schema({
+  model: {
+    type: String,
+    required: true,
+  },
+
+  documentId: {
+    type: mongoose.Schema.Types.ObjectId,
+    required: true,
+  },
+
+  action: {
+    type: String,
+    enum: Object.values(AUDIT_ACTIONS),
+    required: true,
+  },
+
+  before: {
+    type: mongoose.Schema.Types.Mixed,
+    default: null,
+  },
+
+  after: {
+    type: mongoose.Schema.Types.Mixed,
+    default: null,
+  },
+
+  changes: {
+    type: [
+      {
+        field: String,
+        before: mongoose.Schema.Types.Mixed,
+        after: mongoose.Schema.Types.Mixed,
+      },
+    ],
+    default: [],
+  },
+
+  ipAddress: {
+    type: String,
+    required: true,
+  },
+
+  userAgent: {
+    type: String,
+    default: "",
+  },
+
+  performedBy: {
+    type: mongoose.Schema.Types.ObjectId,
+    ref: "User",
+    default: null,
+  },
+
+  createdAt: {
+    type: Date,
+    default: Date.now,
+  },
+});
+
+module.exports = mongoose.model("AuditLog", auditLogSchema); // Index for faster queries