bug fixes: Ensure agent transactions exists while seeder

src/backend/app/Models/Meter/MeterToken.php

@@ -6,6 +6,7 @@
 use App\Models\PaymentHistory;
 use App\Models\Transaction\Transaction;
 use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\Relations\MorphOne;
 use Illuminate\Support\Facades\DB;
@@ -17,6 +18,8 @@
  * @property float  $energy
  */
 class MeterToken extends BaseModel {
+    use HasFactory;
+
     public const RELATION_NAME = 'meter_token';
 
     public function transaction(): BelongsTo {

src/backend/app/Models/Token.php

@@ -4,10 +4,13 @@
 
 use App\Models\Base\BaseModel;
 use App\Models\Transaction\Transaction;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\Relations\MorphOne;
 
 class Token extends BaseModel {
+    use HasFactory;
+
     public const RELATION_NAME = 'token';
 
     public function transaction(): BelongsTo {

src/backend/app/Models/Transaction/Transaction.php

@@ -10,6 +10,7 @@
 use App\Models\Sms;
 use App\Models\Token;
 use App\Relations\BelongsToMorph;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Relations\HasMany;
 use Illuminate\Database\Eloquent\Relations\HasOne;
 use Illuminate\Database\Eloquent\Relations\MorphOne;
@@ -28,6 +29,7 @@
  * @property string $original_transaction_type
  */
 class Transaction extends BaseModel {
+    use HasFactory;
     use RelationsManager;
 
     public const RELATION_NAME = 'transaction';

src/backend/database/seeders/AgentBalanceHistorySeeder.php

@@ -4,6 +4,7 @@
 
 use App\Models\Agent;
 use App\Models\AgentBalanceHistory;
+use App\Models\Transaction\AgentTransaction;
 use Illuminate\Database\Seeder;
 use MPM\DatabaseProxy\DatabaseProxyManagerService;
 
@@ -23,7 +24,25 @@ public function run() {
         $agents = Agent::all();
 
         foreach ($agents as $agent) {
-            AgentBalanceHistory::factory()->create(['agent_id' => $agent->id]);
+            // Fetch all transactions for this agent
+            $transactions = AgentTransaction::where('agent_id', $agent->id)->pluck('id')->toArray();
+
+            // If no transaction exists, create a default one
+            if (empty($transactions)) {
+                $transaction = AgentTransaction::create([
+                    'agent_id' => $agent->id,
+                    'status' => 1,
+                    'sender' => 'System',
+                ]);
+                $transactions = [$transaction->id];
+            }
+
+            for ($i = 0; $i < 30; ++$i) {
+                AgentBalanceHistory::factory()->create([
+                    'agent_id' => $agent->id,
+                    'transaction_id' => fake()->randomElement($transactions),
+                ]);
+            }
         }
     }
 }