[ '機台啟動完成', '系統心跳上報', '交易成功 (訂單 #'.fake()->numberBetween(1000, 9999).')', '補貨作業完成', '環境溫度穩定 (24C)', ], 'warning' => [ '貨道 A3 庫存偏低', '通訊品質不穩定', '感測器回報數值異常', '機門開啟次數過多', ], 'error' => [ '馬達轉動失效 (貨道 B2)', '硬幣器卡幣', '散熱風扇停止運作', '電源供應模組故障', '網路連線中斷', ] ]; $level = fake()->randomElement(['info', 'warning', 'error']); return [ 'machine_id' => Machine::factory(), 'level' => $level, 'message' => fake()->randomElement($messages[$level]), 'context' => [ 'ip' => fake()->ipv4(), 'uptime' => fake()->numberBetween(1000, 100000), ], 'created_at' => fake()->dateTimeBetween('-1 day', 'now'), ]; } }