package audit

import (
	"context"
	"encoding/json"
	"log/slog"

	"github.com/noderunners/nip05api/internal/db"
)

const (
	ActorAdmin  = "admin"
	ActorSystem = "system"

	ActionUserAdded            = "user.added"
	ActionUserUsernameChanged  = "user.username_changed"
	ActionUserExtended         = "user.extended"
	ActionUserDeleted          = "user.deleted"
	ActionPaymentConfirmed     = "payment.confirmed"
	ActionUserExpired          = "user.expired"
	ActionUserGracePurged      = "user.grace_purged"
)

type Logger struct{ db *db.DB }

func New(d *db.DB) *Logger { return &Logger{db: d} }

func (l *Logger) Log(ctx context.Context, action, actor, pubkey string, details map[string]any) {
	if l == nil || l.db == nil {
		return
	}
	var detailsJSON string
	if details != nil {
		b, err := json.Marshal(details)
		if err == nil {
			detailsJSON = string(b)
		}
	}
	if _, err := l.db.ExecContext(ctx,
		`INSERT INTO audit_log (action, actor, pubkey, details) VALUES (?, ?, ?, ?)`,
		action, actor, pubkey, detailsJSON); err != nil {
		slog.Warn("audit log insert failed", "action", action, "err", err)
	}
}