Improve test server data reload with enhanced logging and file timestamp handling

Co-authored-by: kobenguyent <[email protected]>

Author: Copilot

lib/test-server.js

@@ -29,10 +29,11 @@ class TestServer {
       if (fs.existsSync(this.dbFile)) {
         this.lastModified = fs.statSync(this.dbFile).mtime
       }
-      console.log('Loaded data:', data)
+      console.log('[Data Load] Loaded data from file:', JSON.stringify(data))
       return data
     } catch (err) {
-      console.warn(`Could not load data file ${this.dbFile}:`, err.message)
+      console.warn(`[Data Load] Could not load data file ${this.dbFile}:`, err.message)
+      console.log('[Data Load] Using fallback default data')
       return {
         posts: [{ id: 1, title: 'json-server', author: 'davert' }],
         user: { name: 'john', password: '123456' },
@@ -41,15 +42,23 @@ class TestServer {
   }
 
   reloadData() {
+    console.log('[Reload] Reloading data from file...')
     this.data = this.loadData()
+    console.log('[Reload] Data reloaded successfully')
     return this.data
   }
 
   saveData() {
     try {
       fs.writeFileSync(this.dbFile, JSON.stringify(this.data, null, 2))
+      console.log('[Save] Data saved to file')
+      // Force update modification time to ensure auto-reload works
+      const now = new Date()
+      fs.utimesSync(this.dbFile, now, now)
+      this.lastModified = now
+      console.log('[Save] File modification time updated')
     } catch (err) {
-      console.warn(`Could not save data file ${this.dbFile}:`, err.message)
+      console.warn(`[Save] Could not save data file ${this.dbFile}:`, err.message)
     }
   }
 
@@ -79,13 +88,15 @@ class TestServer {
         if (fs.existsSync(this.dbFile)) {
           const stats = fs.statSync(this.dbFile)
           if (!this.lastModified || stats.mtime > this.lastModified) {
-            console.log('Database file changed, reloading data...')
+            console.log(`[Auto-reload] Database file changed (${this.dbFile}), reloading data...`)
+            console.log(`[Auto-reload] Old mtime: ${this.lastModified}, New mtime: ${stats.mtime}`)
             this.reloadData()
             this.lastModified = stats.mtime
+            console.log(`[Auto-reload] Data reloaded, user name is now: ${this.data.user?.name}`)
           }
         }
       } catch (err) {
-        console.warn('Error checking file modification time:', err.message)
+        console.warn('[Auto-reload] Error checking file modification time:', err.message)
       }
       next()
     })
@@ -115,6 +126,7 @@ class TestServer {
 
     // User endpoints
     this.app.get('/user', (req, res) => {
+      console.log(`[GET /user] Serving user data: ${JSON.stringify(this.data.user)}`)
       res.json(this.data.user)
     })