package session

import "time"

// Status represents lifecycle state of a game session.
type Status string

const (
	StatusCreated   Status = "created"
	StatusActive    Status = "active"
	StatusCompleted Status = "completed"
	StatusTimedOut  Status = "timed_out"
	StatusAbandoned Status = "abandoned"
)

// GameSession is the aggregate root for gameplay session state.
type GameSession struct {
	ID               string
	PlayerID         string
	PlayerName       string
	Status           Status
	TotalScore       int
	QuestionsAsked   int
	QuestionsCorrect int
	HintsUsed        int

	CurrentQuestionID string
	CurrentAttempts   int
	CurrentHintUsed   bool
	QuestionStartedAt *time.Time

	StartTime time.Time
	EndTime   *time.Time
	CreatedAt time.Time
	UpdatedAt time.Time
}

// SessionAttempt stores one answer attempt for audit and gameplay history.
type SessionAttempt struct {
	ID             string
	SessionID      string
	QuestionID     string
	AttemptNumber  int
	ProvidedAnswer string
	IsCorrect      bool
	UsedHint       bool
	AwardedScore   int
	LatencyMs      int
	CreatedAt      time.Time
}

// SessionEvent stores lifecycle and anti-cheat events.
type SessionEvent struct {
	ID        string
	SessionID string
	EventType string
	Metadata  string
	CreatedAt time.Time
}

// IsTerminal reports whether the status is terminal.
func (s Status) IsTerminal() bool {
	return s == StatusCompleted || s == StatusTimedOut || s == StatusAbandoned
}

// Remaining returns remaining attempts under max attempts.
func (g *GameSession) Remaining(maxAttempts int) int {
	remaining := maxAttempts - g.CurrentAttempts
	if remaining < 0 {
		return 0
	}
	return remaining
}