fixed numerous linter issues

backend-go/internal/domain/types.go

@@ -1,17 +1,21 @@
+// Package domain defines core domain types shared across the application.
 package domain
 
 import "time"
 
+// Address represents a tracked Ethereum address.
 type Address struct {
 	ID        int       `json:"id"`
-	UserID    string    `json:"user_id"`
+	UserID    string    `json:"user_id"`    //nolint:tagliatelle
 	Address   string    `json:"address"`
 	Label     *string   `json:"label"`
-	CreatedAt time.Time `json:"created_at"`
+	CreatedAt time.Time `json:"created_at"` //nolint:tagliatelle
 }
 
+// AlertType identifies the kind of alert rule.
 type AlertType string
 
+// Alert type constants define the supported alert triggers.
 const (
 	AlertIncomingTx    AlertType = "incoming_tx"
 	AlertOutgoingTx    AlertType = "outgoing_tx"
@@ -19,6 +23,7 @@ const (
 	AlertBalanceBelow  AlertType = "balance_below"
 )
 
+// ValidAlertTypes lists all alert types accepted by the API.
 var ValidAlertTypes = []AlertType{
 	AlertIncomingTx,
 	AlertOutgoingTx,
@@ -26,90 +31,104 @@ var ValidAlertTypes = []AlertType{
 	AlertBalanceBelow,
 }
 
+// ThresholdRequiredTypes lists alert types that require a threshold value.
 var ThresholdRequiredTypes = []AlertType{
 	AlertLargeTransfer,
 	AlertBalanceBelow,
 }
 
+// IsValidAlertType returns true if the given string matches a known AlertType.
 func IsValidAlertType(t string) bool {
 	for _, v := range ValidAlertTypes {
 		if string(v) == t {
 			return true
 		}
 	}
+
 	return false
 }
 
+// IsThresholdRequired returns true if the given AlertType requires a threshold.
 func IsThresholdRequired(t AlertType) bool {
 	for _, v := range ThresholdRequiredTypes {
 		if v == t {
 			return true
 		}
 	}
+
 	return false
 }
 
+// AlertRule represents a user-defined alert rule for an address.
 type AlertRule struct {
 	ID        int       `json:"id"`
-	AddressID int       `json:"address_id"`
+	AddressID int       `json:"address_id"` //nolint:tagliatelle
 	Type      AlertType `json:"type"`
 	Threshold *float64  `json:"threshold"`
 	Enabled   bool      `json:"enabled"`
-	CreatedAt time.Time `json:"created_at"`
+	CreatedAt time.Time `json:"created_at"` //nolint:tagliatelle
 }
 
+// AlertEvent represents a fired alert event stored for history.
 type AlertEvent struct {
 	ID           int       `json:"id"`
-	AlertRuleID  int       `json:"alert_rule_id"`
+	AlertRuleID  int       `json:"alert_rule_id"`   //nolint:tagliatelle
 	Message      string    `json:"message"`
-	AddressLabel *string   `json:"address_label"`
-	TxHash       *string   `json:"tx_hash"`
+	AddressLabel *string   `json:"address_label"`   //nolint:tagliatelle
+	TxHash       *string   `json:"tx_hash"`         //nolint:tagliatelle
 	Timestamp    time.Time `json:"timestamp"`
 }
 
+// AddressCheckpoint tracks the last block checked for an address.
 type AddressCheckpoint struct {
-	AddressID        int       `json:"address_id"`
-	LastCheckedBlock int       `json:"last_checked_block"`
-	LastCheckedAt    time.Time `json:"last_checked_at"`
+	AddressID        int       `json:"address_id"`         //nolint:tagliatelle
+	LastCheckedBlock int       `json:"last_checked_block"` //nolint:tagliatelle
+	LastCheckedAt    time.Time `json:"last_checked_at"`    //nolint:tagliatelle
 }
 
+// CheckpointDetail combines checkpoint and address info for reporting.
 type CheckpointDetail struct {
-	AddressID        int       `json:"address_id"`
+	AddressID        int       `json:"address_id"`         //nolint:tagliatelle
 	Address          string    `json:"address"`
 	Label            *string   `json:"label"`
-	LastCheckedBlock int       `json:"last_checked_block"`
-	LastCheckedAt    time.Time `json:"last_checked_at"`
+	LastCheckedBlock int       `json:"last_checked_block"` //nolint:tagliatelle
+	LastCheckedAt    time.Time `json:"last_checked_at"`    //nolint:tagliatelle
 }
 
+// NotificationConfig holds a user's notification preferences.
 type NotificationConfig struct {
-	UserID              string     `json:"user_id"`
-	DiscordWebhookURL   *string    `json:"discord_webhook_url"`
-	TelegramChatID      *string    `json:"telegram_chat_id"`
-	TelegramBotToken    *string    `json:"telegram_bot_token,omitempty"`
+	UserID              string     `json:"user_id"`              //nolint:tagliatelle
+	DiscordWebhookURL   *string    `json:"discord_webhook_url"`  //nolint:tagliatelle
+	TelegramChatID      *string    `json:"telegram_chat_id"`     //nolint:tagliatelle
+	TelegramBotToken    *string    `json:"telegram_bot_token,omitempty"` //nolint:tagliatelle
 	Email               *string    `json:"email"`
-	NotificationEnabled bool       `json:"notification_enabled"`
-	CreatedAt           *time.Time `json:"created_at,omitempty"`
-	UpdatedAt           *time.Time `json:"updated_at,omitempty"`
+	NotificationEnabled bool       `json:"notification_enabled"` //nolint:tagliatelle
+	CreatedAt           *time.Time `json:"created_at,omitempty"` //nolint:tagliatelle
+	UpdatedAt           *time.Time `json:"updated_at,omitempty"` //nolint:tagliatelle
 }
 
+// NormalizedTx is a blockchain transaction normalized for internal use.
 type NormalizedTx struct {
 	Hash           string  `json:"hash"`
 	From           string  `json:"from"`
 	To             *string `json:"to"`
 	Value          string  `json:"value"` // Wei as string for precision
-	BlockNumber    int     `json:"block_number"`
-	BlockTimestamp int64   `json:"block_timestamp"`
+	BlockNumber    int     `json:"block_number"`    //nolint:tagliatelle
+	BlockTimestamp int64   `json:"block_timestamp"` //nolint:tagliatelle
 }
 
+// Direction indicates whether a transaction is incoming or outgoing.
 type Direction string
 
+// Direction constants indicate the flow of a transaction relative to a watched address.
 const (
 	DirectionIncoming Direction = "incoming"
 	DirectionOutgoing Direction = "outgoing"
 )
 
+// ObservedTx is a NormalizedTx enriched with address and direction context.
 type ObservedTx struct {
 	NormalizedTx
-	AddressID int       `json:"address_id"`
+	AddressID int       `json:"address_id"` //nolint:tagliatelle
 	Direction Direction `json:"direction"`
 }