Merge branch 'espid2sensor-passwort'

espid2sensor: Selfservice-Passwortänderung fuer alle User und
Admin-gesteuerter Passwort-Reset (kein Mail-Versand noetig).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

espid2sensor/package.json

@@ -1,6 +1,6 @@
 {
   "name": "espid2sensor",
-  "version": "1.3.2",
+  "version": "1.4.0",
   "date": "2026-08-06",
   "type": "module",
   "description": "Kleine Webapp ESP-ID <-> Sensornummer, speichern in MongoDB",

espid2sensor/public/global.js

@@ -2,10 +2,12 @@
 function showTab(tab) {
   document.getElementById('tabInputContent').style.display = tab === 'input' ? '' : 'none';
   document.getElementById('tabListContent').style.display = tab === 'list' ? '' : 'none';
+  document.getElementById('tabProfileContent').style.display = tab === 'profile' ? '' : 'none';
   const tabUserContent = document.getElementById('tabUserContent');
   if (tabUserContent) tabUserContent.style.display = tab === 'user' ? '' : 'none';
   document.getElementById('tabInput').classList.toggle('active', tab === 'input');
   document.getElementById('tabList').classList.toggle('active', tab === 'list');
+  document.getElementById('tabProfile').classList.toggle('active', tab === 'profile');
   const tabUser = document.getElementById('tabUser');
   if (tabUser) tabUser.classList.toggle('active', tab === 'user');
 }
@@ -40,6 +42,69 @@ document.addEventListener('DOMContentLoaded', () => {
       }
     });
   }
+
+  const profileSaveBtn = document.getElementById('profileSaveBtn');
+  if (profileSaveBtn) {
+    profileSaveBtn.addEventListener('click', async () => {
+      const currentPassword = document.getElementById('currentPassword').value;
+      const newPassword = document.getElementById('newPassword').value;
+      const newPasswordRepeat = document.getElementById('newPasswordRepeat').value;
+      const profileResult = document.getElementById('profileResult');
+      if (!currentPassword || !newPassword) {
+        profileResult.textContent = 'Aktuelles und neues Passwort erforderlich.';
+        return;
+      }
+      if (newPassword !== newPasswordRepeat) {
+        profileResult.textContent = 'Die Wiederholung stimmt nicht mit dem neuen Passwort überein.';
+        return;
+      }
+      try {
+        const res = await fetch('/api/changePassword', {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify({ currentPassword, newPassword })
+        });
+        const data = await res.json();
+        if (data.success) {
+          profileResult.textContent = 'Passwort erfolgreich geändert!';
+          document.getElementById('profileForm').reset();
+        } else {
+          profileResult.textContent = data.error || 'Fehler beim Ändern.';
+        }
+      } catch (err) {
+        profileResult.textContent = 'Serverfehler.';
+      }
+    });
+  }
+
+  const resetPasswordBtn = document.getElementById('resetPasswordBtn');
+  if (resetPasswordBtn) {
+    resetPasswordBtn.addEventListener('click', async () => {
+      const email = document.getElementById('resetEmail').value.trim();
+      const newPassword = document.getElementById('resetNewPassword').value;
+      const resetPasswordResult = document.getElementById('resetPasswordResult');
+      if (!email || !newPassword) {
+        resetPasswordResult.textContent = 'Email und neues Passwort erforderlich.';
+        return;
+      }
+      try {
+        const res = await fetch('/api/resetPassword', {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify({ email, newPassword })
+        });
+        const data = await res.json();
+        if (data.success) {
+          resetPasswordResult.textContent = 'Passwort erfolgreich zurückgesetzt!';
+          document.getElementById('resetPasswordForm').reset();
+        } else {
+          resetPasswordResult.textContent = data.error || 'Fehler beim Zurücksetzen.';
+        }
+      } catch (err) {
+        resetPasswordResult.textContent = 'Serverfehler.';
+      }
+    });
+  }
 });
 
 function updateSortArrows() {

espid2sensor/routes/api.js

@@ -92,4 +92,39 @@ export function registerApiRoutes(app, requireLogin) {
       res.status(500).json({ error: 'Fehler beim Anlegen' });
     }
   });
+
+  app.post('/api/changePassword', requireLogin, async (req, res) => {
+    const { currentPassword, newPassword } = req.body;
+    if (!currentPassword || !newPassword) {
+      return res.status(400).json({ error: 'Aktuelles und neues Passwort erforderlich' });
+    }
+    try {
+      const user = await usersCollection.findOne({ _id: new ObjectId(req.session.userId) });
+      if (!user) return res.status(404).json({ error: 'User nicht gefunden' });
+      const match = await bcrypt.compare(currentPassword, user.passwordHash);
+      if (!match) return res.status(403).json({ error: 'Aktuelles Passwort ist falsch' });
+      const hash = await bcrypt.hash(newPassword, 10);
+      await usersCollection.updateOne({ _id: user._id }, { $set: { passwordHash: hash } });
+      res.json({ success: true });
+    } catch (err) {
+      res.status(500).json({ error: 'Fehler beim Ändern des Passworts' });
+    }
+  });
+
+  app.post('/api/resetPassword', requireLogin, async (req, res) => {
+    if (!req.session.isAdmin) return res.status(403).json({ error: 'Nur Admins erlaubt' });
+    const { email, newPassword } = req.body;
+    if (!email || !newPassword) return res.status(400).json({ error: 'Email und neues Passwort erforderlich' });
+    try {
+      const hash = await bcrypt.hash(newPassword, 10);
+      const result = await usersCollection.updateOne(
+        { email: email.toLowerCase() },
+        { $set: { passwordHash: hash } }
+      );
+      if (result.matchedCount === 0) return res.status(404).json({ error: 'User nicht gefunden' });
+      res.json({ success: true });
+    } catch (err) {
+      res.status(500).json({ error: 'Fehler beim Zurücksetzen' });
+    }
+  });
 }

espid2sensor/views/index.pug

@@ -11,6 +11,7 @@ html(lang="de")
     div.tabs
       button.tab-btn#tabInput.active(type="button" onclick="showTab('input')") Eingabe
       button.tab-btn#tabList(type="button" onclick="showTab('list')") Liste
+      button.tab-btn#tabProfile(type="button" onclick="showTab('profile')") Profil
       if isAdmin
         button.tab-btn#tabUser(type="button" onclick="showTab('user')") User
 
@@ -67,6 +68,22 @@ html(lang="de")
               th Aktionen
         tbody
 
+  // Profil-Tab (für alle eingeloggten User)
+  div#tabProfileContent.tab-content(style="display:none")
+      div.card
+        h2 Passwort ändern
+        form#profileForm
+          label(for="currentPassword") Aktuelles Passwort:
+          input#currentPassword(type="password" required)
+          label(for="newPassword") Neues Passwort:
+          input#newPassword(type="password" required)
+          label(for="newPasswordRepeat") Neues Passwort (Wiederholung):
+          input#newPasswordRepeat(type="password" required)
+          .twobuttons
+            button#profileSaveBtn(type="button") Ändern
+          div#profileResult
+        #version Version: #{version} vom #{vdate}
+
   // User-Tab (nur für Admins)
   if isAdmin
     div#tabUserContent.tab-content(style="display:none")
@@ -85,6 +102,16 @@ html(lang="de")
             button#userSaveBtn(type="button") Anlegen
             button#userCancelBtn(type="button") Abbrechen
           div#userResult
+      div.card
+        h2 Passwort eines Users zurücksetzen
+        form#resetPasswordForm
+          label(for="resetEmail") Email:
+          input#resetEmail(type="email" required)
+          label(for="resetNewPassword") Neues Passwort:
+          input#resetNewPassword(type="password" required)
+          .twobuttons
+            button#resetPasswordBtn(type="button") Zurücksetzen
+          div#resetPasswordResult
         #version Version: #{version} vom #{vdate}
 
   script(type="module" src="/global.js")

espid2sensor/views/login.pug

@@ -16,6 +16,7 @@ html(lang="de")
         label(for="password") Passwort:
         input#password(type="password" name="password" required)
         button(type="submit") Login
+      p.hint Passwort vergessen? Bitte an einen Admin wenden.
       #version Version: #{version} vom #{vdate}
     
       if error