Adds super user balance overview

Implements functionality for super users to view a breakdown of outstanding balances for all users.

This includes:
- Adding an API endpoint to fetch all user balances.
- Updating the frontend to display these balances in a table, accessible only to super users.
- Modifying the balance calculation for the current user to reflect the total owed by or to the castle for super users.

This provides super users with a comprehensive view of the castle's financial position.

crud.py

@@ -317,6 +317,43 @@ async def get_user_balance(user_id: str) -> UserBalance:
     )
 
 
+async def get_all_user_balances() -> list[UserBalance]:
+    """Get balances for all users (used by castle to see who they owe)"""
+    # Get all user-specific accounts
+    all_accounts = await db.fetchall(
+        "SELECT * FROM accounts WHERE user_id IS NOT NULL",
+        {},
+        Account,
+    )
+
+    # Group by user_id
+    users_dict = {}
+    for account in all_accounts:
+        if account.user_id not in users_dict:
+            users_dict[account.user_id] = []
+        users_dict[account.user_id].append(account)
+
+    # Calculate balance for each user
+    user_balances = []
+    for user_id, accounts in users_dict.items():
+        total_balance = 0
+        for account in accounts:
+            balance = await get_account_balance(account.id)
+            if account.account_type == AccountType.LIABILITY:
+                total_balance += balance
+            elif account.account_type == AccountType.ASSET:
+                total_balance -= balance
+
+        if total_balance != 0:  # Only include users with non-zero balance
+            user_balances.append(
+                UserBalance(
+                    user_id=user_id, balance=total_balance, accounts=accounts
+                )
+            )
+
+    return user_balances
+
+
 async def get_account_transactions(
     account_id: str, limit: int = 100
 ) -> list[tuple[JournalEntry, EntryLine]]:

static/js/index.js

@@ -8,6 +8,7 @@ window.app = Vue.createApp({
   data() {
     return {
       balance: null,
+      allUserBalances: [],
       transactions: [],
       accounts: [],
       currencies: [],
@@ -71,10 +72,27 @@ window.app = Vue.createApp({
           this.g.user.wallets[0].inkey
         )
         this.balance = response.data
+
+        // If super user, also load all user balances
+        if (this.isSuperUser) {
+          await this.loadAllUserBalances()
+        }
       } catch (error) {
         LNbits.utils.notifyApiError(error)
       }
     },
+    async loadAllUserBalances() {
+      try {
+        const response = await LNbits.api.request(
+          'GET',
+          '/castle/api/v1/balances/all',
+          this.g.user.wallets[0].adminkey
+        )
+        this.allUserBalances = response.data
+      } catch (error) {
+        console.error('Error loading all user balances:', error)
+      }
+    },
     async loadTransactions() {
       try {
         const response = await LNbits.api.request(

templates/castle/index.html

@@ -76,14 +76,17 @@
           </div>
         </div>
         <div v-if="balance !== null">
-          <div class="text-h4" :class="balance.balance >= 0 ? 'text-positive' : 'text-negative'">
+          <div class="text-h4" :class="balance.balance >= 0 ? 'text-negative' : 'text-positive'">
             {% raw %}{{ formatSats(Math.abs(balance.balance)) }} sats{% endraw %}
           </div>
-          <div class="text-subtitle2">
+          <div class="text-subtitle2" v-if="isSuperUser">
+            {% raw %}{{ balance.balance > 0 ? 'Total you owe' : balance.balance < 0 ? 'Total owed to you' : 'No outstanding balances' }}{% endraw %}
+          </div>
+          <div class="text-subtitle2" v-else>
             {% raw %}{{ balance.balance >= 0 ? 'Castle owes you' : 'You owe Castle' }}{% endraw %}
           </div>
           <q-btn
-            v-if="balance.balance < 0"
+            v-if="balance.balance < 0 && !isSuperUser"
             color="primary"
             class="q-mt-md"
             @click="showPayBalanceDialog"
@@ -98,6 +101,40 @@
       </q-card-section>
     </q-card>
 
+    <!-- User Balances Breakdown (Super User Only) -->
+    <q-card v-if="isSuperUser && allUserBalances.length > 0">
+      <q-card-section>
+        <h6 class="q-my-none q-mb-md">Outstanding Balances by User</h6>
+        <q-table
+          flat
+          :rows="allUserBalances"
+          :columns="[
+            {name: 'user', label: 'User ID', field: 'user_id', align: 'left'},
+            {name: 'balance', label: 'Amount Owed', field: 'balance', align: 'right'}
+          ]"
+          row-key="user_id"
+          hide-pagination
+          :rows-per-page-options="[0]"
+        >
+          <template v-slot:body-cell-user="props">
+            <q-td :props="props">
+              <div class="text-caption">{% raw %}{{ props.row.user_id.substring(0, 16) }}...{% endraw %}</div>
+            </q-td>
+          </template>
+          <template v-slot:body-cell-balance="props">
+            <q-td :props="props">
+              <div :class="props.row.balance > 0 ? 'text-negative' : 'text-positive'">
+                {% raw %}{{ formatSats(Math.abs(props.row.balance)) }} sats{% endraw %}
+              </div>
+              <div class="text-caption text-grey">
+                {% raw %}{{ props.row.balance > 0 ? 'You owe' : 'Owes you' }}{% endraw %}
+              </div>
+            </q-td>
+          </template>
+        </q-table>
+      </q-card-section>
+    </q-card>
+
     <!-- Quick Actions -->
     <q-card>
       <q-card-section>

views_api.py

@@ -19,6 +19,7 @@ from .crud import (
     get_account_transactions,
     get_all_accounts,
     get_all_journal_entries,
+    get_all_user_balances,
     get_journal_entries_by_user,
     get_journal_entry,
     get_or_create_user_account,
@@ -382,7 +383,19 @@ async def api_get_my_balance(
     wallet: WalletTypeInfo = Depends(require_invoice_key),
 ) -> UserBalance:
     """Get current user's balance with the Castle"""
-    return await get_user_balance(wallet.wallet.id)
+    from lnbits.settings import settings as lnbits_settings
+
+    # If super user, show total castle liabilities (what castle owes to all users)
+    if wallet.wallet.user == lnbits_settings.super_user:
+        all_balances = await get_all_user_balances()
+        total_owed = sum(b.balance for b in all_balances if b.balance > 0)
+        # Return as castle's "balance" - positive means castle owes money
+        return UserBalance(
+            user_id=wallet.wallet.user, balance=total_owed, accounts=[]
+        )
+
+    # For regular users, show their individual balance
+    return await get_user_balance(wallet.wallet.user)
 
 
 @castle_api_router.get("/api/v1/balance/{user_id}")
@@ -391,6 +404,14 @@ async def api_get_user_balance(user_id: str) -> UserBalance:
     return await get_user_balance(user_id)
 
 
+@castle_api_router.get("/api/v1/balances/all")
+async def api_get_all_balances(
+    wallet: WalletTypeInfo = Depends(require_admin_key),
+) -> list[UserBalance]:
+    """Get all user balances (admin/super user only)"""
+    return await get_all_user_balances()
+
+
 # ===== PAYMENT ENDPOINTS =====