Add Tiers and Game Prize

internal/entities/game_prize.go

@@ -0,0 +1,37 @@
+package entities
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+)
+
+type GamePrize struct {
+	ID              uuid.UUID  `gorm:"type:uuid;primary_key;default:gen_random_uuid()" json:"id"`
+	GameID          uuid.UUID  `gorm:"type:uuid;not null;index" json:"game_id" validate:"required"`
+	Name            string     `gorm:"type:varchar(255);not null" json:"name" validate:"required"`
+	Weight          int        `gorm:"not null" json:"weight" validate:"min=1"`
+	Stock           int        `gorm:"default:0" json:"stock" validate:"min=0"`
+	MaxStock        *int       `gorm:"" json:"max_stock,omitempty"`
+	Threshold       *int64     `gorm:"" json:"threshold,omitempty"`
+	FallbackPrizeID *uuid.UUID `gorm:"type:uuid" json:"fallback_prize_id,omitempty"`
+	Metadata        Metadata   `gorm:"type:jsonb;default:'{}'" json:"metadata"`
+	CreatedAt       time.Time  `gorm:"autoCreateTime" json:"created_at"`
+	UpdatedAt       time.Time  `gorm:"autoUpdateTime" json:"updated_at"`
+
+	Game          Game       `gorm:"foreignKey:GameID" json:"game,omitempty"`
+	FallbackPrize *GamePrize `gorm:"foreignKey:FallbackPrizeID" json:"fallback_prize,omitempty"`
+	Plays         []GamePlay `gorm:"foreignKey:PrizeID" json:"plays,omitempty"`
+}
+
+func (gp *GamePrize) BeforeCreate(tx *gorm.DB) error {
+	if gp.ID == uuid.Nil {
+		gp.ID = uuid.New()
+	}
+	return nil
+}
+
+func (GamePrize) TableName() string {
+	return "game_prizes"
+}