perbaikan generete tool

internal/models/product/product.go

@@ -0,0 +1,195 @@
+package models
+
+import (
+	"database/sql"
+	"database/sql/driver"
+	"encoding/json"
+	"time"
+)
+
+// NullableInt32 is a custom type to replace sql.NullInt32 for swagger compatibility
+type NullableInt32 struct {
+	Int32 int32 `json:"int32,omitempty"`
+	Valid bool  `json:"valid"`
+}
+
+// Scan implements the sql.Scanner interface for NullableInt32
+func (n *NullableInt32) Scan(value interface{}) error {
+	var ni sql.NullInt32
+	if err := ni.Scan(value); err != nil {
+		return err
+	}
+	n.Int32 = ni.Int32
+	n.Valid = ni.Valid
+	return nil
+}
+
+// Value implements the driver.Valuer interface for NullableInt32
+func (n NullableInt32) Value() (driver.Value, error) {
+	if !n.Valid {
+		return nil, nil
+	}
+	return n.Int32, nil
+}
+
+// Product represents the data structure for the product table
+type Product struct {
+	ID          string         `json:"id" db:"id"`
+	Status      string         `json:"status" db:"status"`
+	Sort        NullableInt32  `json:"sort,omitempty" db:"sort"`
+	UserCreated sql.NullString `json:"user_created,omitempty" db:"user_created"`
+	DateCreated sql.NullTime   `json:"date_created,omitempty" db:"date_created"`
+	UserUpdated sql.NullString `json:"user_updated,omitempty" db:"user_updated"`
+	DateUpdated sql.NullTime   `json:"date_updated,omitempty" db:"date_updated"`
+	Name        sql.NullString `json:"name,omitempty" db:"name"`
+}
+
+// Custom JSON marshaling for Product
+func (r Product) MarshalJSON() ([]byte, error) {
+	type Alias Product
+	aux := &struct {
+		Sort        *int       `json:"sort,omitempty"`
+		UserCreated *string    `json:"user_created,omitempty"`
+		DateCreated *time.Time `json:"date_created,omitempty"`
+		UserUpdated *string    `json:"user_updated,omitempty"`
+		DateUpdated *time.Time `json:"date_updated,omitempty"`
+		Name        *string    `json:"name,omitempty"`
+		*Alias
+	}{
+		Alias: (*Alias)(&r),
+	}
+
+	if r.Sort.Valid {
+		sort := int(r.Sort.Int32)
+		aux.Sort = &sort
+	}
+	if r.UserCreated.Valid {
+		aux.UserCreated = &r.UserCreated.String
+	}
+	if r.DateCreated.Valid {
+		aux.DateCreated = &r.DateCreated.Time
+	}
+	if r.UserUpdated.Valid {
+		aux.UserUpdated = &r.UserUpdated.String
+	}
+	if r.DateUpdated.Valid {
+		aux.DateUpdated = &r.DateUpdated.Time
+	}
+	if r.Name.Valid {
+		aux.Name = &r.Name.String
+	}
+
+	return json.Marshal(aux)
+}
+
+// Helper methods
+func (r *Product) GetName() string {
+	if r.Name.Valid {
+		return r.Name.String
+	}
+	return ""
+}
+
+// Response struct for GET by ID
+type ProductGetByIDResponse struct {
+	Message string `json:"message"`
+	Data    *Product   `json:"data"`
+}
+
+// Enhanced GET response with pagination and aggregation
+type ProductGetResponse struct {
+	Message string        `json:"message"`
+	Data    []Product          `json:"data"`
+	Meta    MetaResponse  `json:"meta"`
+	Summary *AggregateData `json:"summary,omitempty"`
+}
+
+// Request struct for create
+type ProductCreateRequest struct {
+	Status string  `json:"status" validate:"required,oneof=draft active inactive"`
+	Name   *string `json:"name,omitempty" validate:"omitempty,min=1,max=255"`
+}
+
+// Response struct for create
+type ProductCreateResponse struct {
+	Message string `json:"message"`
+	Data    *Product   `json:"data"`
+}
+
+// Update request
+type ProductUpdateRequest struct {
+	ID     string  `json:"-" validate:"required,uuid4"` // ID dari URL path
+	Status string  `json:"status" validate:"required,oneof=draft active inactive"`
+	Name   *string `json:"name,omitempty" validate:"omitempty,min=1,max=255"`
+}
+
+// Response struct for update
+type ProductUpdateResponse struct {
+	Message string `json:"message"`
+	Data    *Product   `json:"data"`
+}
+
+// Response struct for delete
+type ProductDeleteResponse struct {
+	Message string `json:"message"`
+	ID      string `json:"id"`
+}
+
+// Metadata for pagination
+type MetaResponse struct {
+	Limit       int  `json:"limit"`
+	Offset      int  `json:"offset"`
+	Total       int  `json:"total"`
+	TotalPages  int  `json:"total_pages"`
+	CurrentPage int  `json:"current_page"`
+	HasNext     bool `json:"has_next"`
+	HasPrev     bool `json:"has_prev"`
+}
+
+// Aggregate data for summary
+type AggregateData struct {
+	TotalActive   int            `json:"total_active"`
+	TotalDraft    int            `json:"total_draft"`
+	TotalInactive int            `json:"total_inactive"`
+	ByStatus      map[string]int `json:"by_status"`
+	LastUpdated   *time.Time     `json:"last_updated,omitempty"`
+	CreatedToday  int            `json:"created_today"`
+	UpdatedToday  int            `json:"updated_today"`
+}
+
+// Error response
+type ErrorResponse struct {
+	Error     string    `json:"error"`
+	Code      int       `json:"code"`
+	Message   string    `json:"message"`
+	Timestamp time.Time `json:"timestamp"`
+}
+
+// Filter struct for query parameters
+type ProductFilter struct {
+	Status   *string    `json:"status,omitempty" form:"status"`
+	Search   *string    `json:"search,omitempty" form:"search"`
+	DateFrom *time.Time `json:"date_from,omitempty" form:"date_from"`
+	DateTo   *time.Time `json:"date_to,omitempty" form:"date_to"`
+}
+
+// Validation constants
+const (
+	StatusDraft    = "draft"
+	StatusActive   = "active"
+	StatusInactive = "inactive"
+	StatusDeleted  = "deleted"
+)
+
+// ValidStatuses for validation
+var ValidStatuses = []string{StatusDraft, StatusActive, StatusInactive}
+
+// IsValidStatus helper function
+func IsValidStatus(status string) bool {
+	for _, validStatus := range ValidStatuses {
+		if status == validStatus {
+			return true
+		}
+	}
+	return false
+}