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101 lines
4.1 KiB
Go
101 lines
4.1 KiB
Go
package domain
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import (
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"context"
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"fmt"
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"time"
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"github.com/lib/pq"
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"gorm.io/datatypes"
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)
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// ProductCategory defines the category of a product
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type ProductCategory string
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const (
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ProductCategoryChemicals ProductCategory = "chemicals"
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ProductCategoryEquipment ProductCategory = "equipment"
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ProductCategoryMaterials ProductCategory = "materials"
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ProductCategoryFood ProductCategory = "food"
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ProductCategoryPackaging ProductCategory = "packaging"
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ProductCategoryOilGas ProductCategory = "oil_gas"
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ProductCategoryConstruction ProductCategory = "construction"
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ProductCategoryManufacturing ProductCategory = "manufacturing"
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ProductCategoryOther ProductCategory = "other"
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)
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// Product represents a product offered by an organization (database entity)
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// Note: There's also a ProductJSON struct in organization.go for API serialization
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type Product struct {
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ID string `gorm:"primaryKey;type:text"`
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Name string `gorm:"not null;type:text;index"`
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Category ProductCategory `gorm:"not null;type:varchar(50);index"`
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Description string `gorm:"type:text"`
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UnitPrice float64 `gorm:"type:decimal(10,2);index"` // € per unit
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MOQ int `gorm:"type:integer"` // Minimum Order Quantity
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Certifications datatypes.JSON `gorm:"default:'[]'"` // []string
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// Business information
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OrganizationID string `gorm:"not null;type:text;index"`
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Organization *Organization `gorm:"foreignKey:OrganizationID"`
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// Site information (for location-based matching)
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SiteID *string `gorm:"type:text;index"`
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Site *Site `gorm:"foreignKey:SiteID"`
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// Location (PostGIS Point for spatial queries)
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Location Point `gorm:"type:geometry(Point,4326)"` // PostGIS geometry point
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// Discovery and search fields
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SearchKeywords string `gorm:"type:text"` // Full-text search keywords
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Tags pq.StringArray `gorm:"type:text[]"` // Searchable tags array
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AvailabilityStatus string `gorm:"type:varchar(20);default:'available';index"` // available, limited, out_of_stock
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Images pq.StringArray `gorm:"type:text[]"` // Array of image URLs
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// Additional metadata
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Capacity string `gorm:"type:text"` // Production capacity info
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Specifications datatypes.JSON `gorm:"type:jsonb;default:'{}'"` // Technical specifications
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Availability string `gorm:"type:text"` // Availability status (legacy field, kept for compatibility)
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Sources datatypes.JSON `gorm:"type:jsonb"` // Data sources
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// Timestamps
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CreatedAt time.Time `gorm:"autoCreateTime"`
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UpdatedAt time.Time `gorm:"autoUpdateTime"`
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}
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// TableName specifies the table name for GORM
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func (Product) TableName() string {
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return "products"
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}
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// ProductRepository defines operations for product management
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type ProductRepository interface {
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Create(ctx context.Context, product *Product) error
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GetByID(ctx context.Context, id string) (*Product, error)
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GetByOrganization(ctx context.Context, organizationID string) ([]*Product, error)
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GetByCategory(ctx context.Context, category ProductCategory) ([]*Product, error)
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SearchByName(ctx context.Context, name string) ([]*Product, error)
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GetByPriceRange(ctx context.Context, minPrice, maxPrice float64) ([]*Product, error)
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Update(ctx context.Context, product *Product) error
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Delete(ctx context.Context, id string) error
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GetAll(ctx context.Context) ([]*Product, error)
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// Discovery methods
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SearchWithLocation(ctx context.Context, query string, location *Point, radiusKm float64) ([]*Product, error)
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GetBySite(ctx context.Context, siteID string) ([]*Product, error)
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GetNearby(ctx context.Context, lat, lng, radiusKm float64) ([]*Product, error)
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}
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// Validate performs business rule validation
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func (p *Product) Validate() error {
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if p.Name == "" {
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return fmt.Errorf("product name cannot be empty")
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}
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if p.UnitPrice < 0 {
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return fmt.Errorf("unit price cannot be negative")
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}
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if p.MOQ < 0 {
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return fmt.Errorf("minimum order quantity cannot be negative")
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}
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return nil
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}
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