// Package ironlicensing provides an SDK for software licensing.
package ironlicensing

import "time"

// LicenseStatus represents the status of a license.
type LicenseStatus string

const (
	StatusValid        LicenseStatus = "valid"
	StatusExpired      LicenseStatus = "expired"
	StatusSuspended    LicenseStatus = "suspended"
	StatusRevoked      LicenseStatus = "revoked"
	StatusInvalid      LicenseStatus = "invalid"
	StatusTrial        LicenseStatus = "trial"
	StatusTrialExpired LicenseStatus = "trial_expired"
	StatusNotActivated LicenseStatus = "not_activated"
	StatusUnknown      LicenseStatus = "unknown"
)

// LicenseType represents the type of license.
type LicenseType string

const (
	TypePerpetual    LicenseType = "perpetual"
	TypeSubscription LicenseType = "subscription"
	TypeTrial        LicenseType = "trial"
)

// Feature represents a feature in a license.
type Feature struct {
	Key         string         `json:"key"`
	Name        string         `json:"name"`
	Enabled     bool           `json:"enabled"`
	Description string         `json:"description,omitempty"`
	Metadata    map[string]any `json:"metadata,omitempty"`
}

// License represents license information.
type License struct {
	ID                 string         `json:"id"`
	Key                string         `json:"key"`
	Status             LicenseStatus  `json:"status"`
	Type               LicenseType    `json:"type"`
	Email              string         `json:"email,omitempty"`
	Name               string         `json:"name,omitempty"`
	Company            string         `json:"company,omitempty"`
	Features           []Feature      `json:"features"`
	MaxActivations     int            `json:"maxActivations"`
	CurrentActivations int            `json:"currentActivations"`
	ExpiresAt          *time.Time     `json:"expiresAt,omitempty"`
	CreatedAt          time.Time      `json:"createdAt"`
	LastValidatedAt    *time.Time     `json:"lastValidatedAt,omitempty"`
	Metadata           map[string]any `json:"metadata,omitempty"`
}

// Activation represents activation information.
type Activation struct {
	ID          string    `json:"id"`
	MachineID   string    `json:"machineId"`
	MachineName string    `json:"machineName,omitempty"`
	Platform    string    `json:"platform,omitempty"`
	ActivatedAt time.Time `json:"activatedAt"`
	LastSeenAt  time.Time `json:"lastSeenAt"`
}

// LicenseResult represents the result of license validation.
type LicenseResult struct {
	Valid       bool         `json:"valid"`
	License     *License     `json:"license,omitempty"`
	Activations []Activation `json:"activations,omitempty"`
	Error       string       `json:"error,omitempty"`
	Cached      bool         `json:"cached,omitempty"`
}

// CheckoutResult represents the result of checkout.
type CheckoutResult struct {
	Success     bool   `json:"success"`
	CheckoutURL string `json:"checkoutUrl,omitempty"`
	SessionID   string `json:"sessionId,omitempty"`
	Error       string `json:"error,omitempty"`
}

// ProductTier represents a product tier for purchase.
type ProductTier struct {
	ID            string    `json:"id"`
	Slug          string    `json:"slug"`
	Name          string    `json:"name"`
	Description   string    `json:"description,omitempty"`
	Price         float64   `json:"price"`
	Currency      string    `json:"currency"`
	BillingPeriod string    `json:"billingPeriod,omitempty"`
	Features      []Feature `json:"features"`
}