monitoring

var (
	// Function execution metrics
	FunctionExecutionCount = promauto.NewCounterVec(
		prometheus.CounterOpts{
			Name: "service_layer_function_executions_total",
			Help: "The total number of function executions",
		},
		[]string{"function_id", "user_id", "status"},
	)

	FunctionExecutionDuration = promauto.NewHistogramVec(
		prometheus.HistogramOpts{
			Name:    "service_layer_function_execution_duration_seconds",
			Help:    "Function execution duration in seconds",
			Buckets: prometheus.ExponentialBuckets(0.001, 2, 15),
		},
		[]string{"function_id", "user_id"},
	)

	FunctionMemoryUsage = promauto.NewHistogramVec(
		prometheus.HistogramOpts{
			Name:    "service_layer_function_memory_usage_bytes",
			Help:    "Function memory usage in bytes",
			Buckets: prometheus.ExponentialBuckets(1024*1024, 2, 10),
		},
		[]string{"function_id", "user_id"},
	)

	// Secret management metrics
	SecretOperationsCount = promauto.NewCounterVec(
		prometheus.CounterOpts{
			Name: "service_layer_secret_operations_total",
			Help: "The total number of secret operations",
		},
		[]string{"user_id", "operation", "status"},
	)

	SecretCount = promauto.NewGaugeVec(
		prometheus.GaugeOpts{
			Name: "service_layer_secrets_count",
			Help: "The number of secrets stored per user",
		},
		[]string{"user_id"},
	)

	// TEE metrics
	TEEAttestationCount = promauto.NewCounterVec(
		prometheus.CounterOpts{
			Name: "service_layer_tee_attestations_total",
			Help: "The total number of TEE attestation operations",
		},
		[]string{"status"},
	)

	TEEAttestationDuration = promauto.NewHistogram(
		prometheus.HistogramOpts{
			Name:    "service_layer_tee_attestation_duration_seconds",
			Help:    "TEE attestation duration in seconds",
			Buckets: prometheus.ExponentialBuckets(0.01, 2, 10),
		},
	)

	// API metrics
	APIRequestsCount = promauto.NewCounterVec(
		prometheus.CounterOpts{
			Name: "service_layer_api_requests_total",
			Help: "The total number of API requests",
		},
		[]string{"path", "method", "status"},
	)

	APIRequestDuration = promauto.NewHistogramVec(
		prometheus.HistogramOpts{
			Name:    "service_layer_api_request_duration_seconds",
			Help:    "API request duration in seconds",
			Buckets: prometheus.ExponentialBuckets(0.001, 2, 15),
		},
		[]string{"path", "method"},
	)

	// Health metrics
	SystemUptime = promauto.NewCounter(
		prometheus.CounterOpts{
			Name: "service_layer_uptime_seconds_total",
			Help: "The total uptime of the service layer in seconds",
		},
	)

	DatabaseConnections = promauto.NewGauge(
		prometheus.GaugeOpts{
			Name: "service_layer_database_connections",
			Help: "The number of active database connections",
		},
	)

	BlockchainConnections = promauto.NewGauge(
		prometheus.GaugeOpts{
			Name: "service_layer_blockchain_connections",
			Help: "The number of active blockchain node connections",
		},
	)

	// Gas bank metrics
	GasBankBalance = promauto.NewGaugeVec(
		prometheus.GaugeOpts{
			Name: "service_layer_gas_bank_balance",
			Help: "The current balance of the gas bank",
		},
		[]string{"asset"},
	)

	GasBankTransactionsCount = promauto.NewCounterVec(
		prometheus.CounterOpts{
			Name: "service_layer_gas_bank_transactions_total",
			Help: "The total number of gas bank transactions",
		},
		[]string{"operation", "status"},
	)

	// Error metrics
	ErrorsCount = promauto.NewCounterVec(
		prometheus.CounterOpts{
			Name: "service_layer_errors_total",
			Help: "The total number of errors",
		},
		[]string{"component", "error_type"},
	)

	// System resource metrics
	SystemCPUUsage = promauto.NewGauge(
		prometheus.GaugeOpts{
			Name: "service_layer_system_cpu_usage",
			Help: "The CPU usage of the service layer",
		},
	)

	SystemMemoryUsage = promauto.NewGauge(
		prometheus.GaugeOpts{
			Name: "service_layer_system_memory_bytes",
			Help: "The memory usage of the service layer in bytes",
		},
	)

	SystemGoroutines = promauto.NewGauge(
		prometheus.GaugeOpts{
			Name: "service_layer_goroutines",
			Help: "The number of goroutines",
		},
	)
)