tercul-backend/models/rights.go

package models

import (
	"time"
)

// Copyright represents a copyright that can be attached to any entity
type Copyright struct {
	BaseModel
	Identificator string `gorm:"size:100;not null"` // Rails: identificator field
	Name          string `gorm:"size:255;not null"`
	Description   string `gorm:"type:text"`
	License       string `gorm:"size:100"`
	StartDate     *time.Time
	EndDate       *time.Time

	// Polymorphic relationships - can attach to any entity
	Copyrightables []Copyrightable `gorm:"polymorphic:Copyrightable"`

	// Translations for multilingual copyright messages
	Translations []CopyrightTranslation `gorm:"foreignKey:CopyrightID"`
}

// Copyrightable represents a polymorphic relationship for copyrights
type Copyrightable struct {
	BaseModel
	CopyrightID       uint
	Copyright         *Copyright `gorm:"foreignKey:CopyrightID"`
	CopyrightableID   uint       // ID of the entity (work, translation, book, etc.)
	CopyrightableType string     // Type: "Work", "Translation", "Book", "Author", etc.
}

// CopyrightTranslation for multilingual copyright messages
type CopyrightTranslation struct {
	BaseModel
	CopyrightID  uint
	Copyright    *Copyright `gorm:"foreignKey:CopyrightID"`
	LanguageCode string     `gorm:"size:10;not null"`
	Message      string     `gorm:"type:text;not null"`
	Description  string     `gorm:"type:text"`
}

// CopyrightClaimStatus represents the status of a copyright claim
type CopyrightClaimStatus string

const (
	CopyrightClaimStatusPending  CopyrightClaimStatus = "pending"
	CopyrightClaimStatusApproved CopyrightClaimStatus = "approved"
	CopyrightClaimStatusRejected CopyrightClaimStatus = "rejected"
)

// CopyrightClaim represents a copyright claim
type CopyrightClaim struct {
	BaseModel
	Details    string               `gorm:"type:text;not null"`
	Status     CopyrightClaimStatus `gorm:"size:50;default:'pending'"`
	ClaimDate  time.Time            `gorm:"not null"`
	Resolution string               `gorm:"type:text"`
	ResolvedAt *time.Time
	UserID     *uint
	User       *User `gorm:"foreignKey:UserID"`
	// Polymorphic relationship - can attach to any entity
	Claimables []Copyrightable `gorm:"polymorphic:Copyrightable"`
}

// MonetizationType represents the type of monetization
type MonetizationType string

const (
	MonetizationTypeSubscription  MonetizationType = "subscription"
	MonetizationTypeOneTime       MonetizationType = "one_time"
	MonetizationTypeDonation      MonetizationType = "donation"
	MonetizationTypeAdvertisement MonetizationType = "advertisement"
	MonetizationTypeLicensing     MonetizationType = "licensing"
)

// MonetizationStatus represents the status of monetization
type MonetizationStatus string

const (
	MonetizationStatusActive   MonetizationStatus = "active"
	MonetizationStatusInactive MonetizationStatus = "inactive"
	MonetizationStatusPending  MonetizationStatus = "pending"
)

// Monetizable represents a polymorphic relationship for monetization
type Monetizable struct {
	BaseModel
	MonetizationID  uint
	Monetization    *Monetization `gorm:"foreignKey:MonetizationID"`
	MonetizableID   uint          // ID of the entity (work, translation, book, etc.)
	MonetizableType string        // Type: "Work", "Translation", "Book", "Author", etc.
}

// Monetization represents monetization information for any entity
type Monetization struct {
	BaseModel
	Amount    float64            `gorm:"type:decimal(10,2);default:0.0"`
	Currency  string             `gorm:"size:3;default:'USD'"`
	Type      MonetizationType   `gorm:"size:50"`
	Status    MonetizationStatus `gorm:"size:50;default:'active'"`
	StartDate *time.Time
	EndDate   *time.Time
	Language  string `gorm:"size:50;not null"`
	// Polymorphic relationships - can attach to any entity
	Monetizables []Monetizable `gorm:"polymorphic:Monetizable"`
}

// License represents a standard license record
type License struct {
	BaseModel
	SPDXIdentifier string `gorm:"size:64;uniqueIndex"`
	Name           string `gorm:"size:255;not null"`
	URL            string `gorm:"size:512"`
	Description    string `gorm:"type:text"`
}

// ModerationFlag represents moderation flags for any entity
type ModerationFlag struct {
	BaseModel
	TargetType string `gorm:"size:50;not null"`
	TargetID   uint   `gorm:"not null"`
	Reason     string `gorm:"size:255"`
	Status     string `gorm:"size:50;default:'open'"`
	ReviewerID *uint
	Reviewer   *User  `gorm:"foreignKey:ReviewerID"`
	Notes      string `gorm:"type:text"`
}

// AuditLog captures changes for governance and traceability
type AuditLog struct {
	BaseModel
	ActorID    *uint
	Actor      *User     `gorm:"foreignKey:ActorID"`
	Action     string    `gorm:"size:50;not null"`
	EntityType string    `gorm:"size:50;not null"`
	EntityID   uint      `gorm:"not null"`
	Before     JSONB     `gorm:"type:jsonb;default:'{}'"`
	After      JSONB     `gorm:"type:jsonb;default:'{}'"`
	At         time.Time `gorm:"autoCreateTime"`
}