package domain

import (
	"errors"
	"time"

	"github.com/google/uuid"
)

type EventStatus string

const (
	EventStatusDraft     EventStatus = "draft"
	EventStatusPublished EventStatus = "published"
	EventStatusClosed    EventStatus = "closed"
	EventStatusArchived  EventStatus = "archived"
)

func (s EventStatus) Valid() bool {
	switch s {
	case EventStatusDraft, EventStatusPublished, EventStatusClosed, EventStatusArchived:
		return true
	}
	return false
}

type Event struct {
	ID          uuid.UUID      `json:"id"`
	HostID      uuid.UUID      `json:"host_id"`
	Name        string         `json:"name"`
	Slug        string         `json:"slug"`
	EventDate   time.Time      `json:"event_date"`
	Venue       string         `json:"venue"`
	MaxCapacity int            `json:"max_capacity"`
	Settings    map[string]any `json:"settings"`
	Status      EventStatus    `json:"status"`
	CreatedAt   time.Time      `json:"created_at"`
	UpdatedAt   time.Time      `json:"updated_at"`

	// Per-event fraud-band thresholds (Tier 2 Block G). The defaults are
	// set by the migration so events created pre-Block-G continue to use
	// the previous global 30/60/85 boundaries until a host changes them.
	FraudMediumThreshold int `json:"fraud_medium_threshold"`
	FraudHighThreshold   int `json:"fraud_high_threshold"`
	FraudBlockThreshold  int `json:"fraud_block_threshold"`
}

// Thresholds returns the event's fraud band trio as a single value the
// scoring path can pass around (or fall back to defaults if the row was
// loaded before this migration).
func (e *Event) Thresholds() FraudThresholds {
	t := FraudThresholds{
		Medium: e.FraudMediumThreshold,
		High:   e.FraudHighThreshold,
		Block:  e.FraudBlockThreshold,
	}
	// Treat zeros (or invalid orderings) as "host hasn't customised";
	// fall back to defaults rather than wedge every score into the lowest
	// band.
	if t.Valid() != nil || t.Block == 0 {
		return DefaultThresholds()
	}
	return t
}

var (
	ErrEventNotFound = errors.New("event not found")
	ErrSlugTaken     = errors.New("slug already in use")
)