package storage

import (
	"strings"
	"time"

	"gardomatic.kleiax.de/internal/platform/validate"
)

// ApplicationSettings contains application-wide automation settings.
type ApplicationSettings struct {
	LifecycleStatusEnabled bool      `json:"lifecycle_status_enabled"`
	LifecycleRemovalMonth  int       `json:"lifecycle_removal_month"`
	LifecycleRemovalDay    int       `json:"lifecycle_removal_day"`
	Timezone               string    `json:"timezone"`
	UpdatedAt              time.Time `json:"updated_at"`
	Version                int       `json:"version"`
}

// ApplicationSettingsModelInterface persists global settings and applies lifecycle cleanup atomically.
type ApplicationSettingsModelInterface interface {
	Get() (ApplicationSettings, error)
	Update(settings ApplicationSettings) (ApplicationSettings, error)
	RemoveExpiredPlants(asOf time.Time, removalMonth, removalDay int) (int, error)
}

// ValidateApplicationSettings validates global automation configuration.
func ValidateApplicationSettings(v *validate.Validator, settings ApplicationSettings) {
	v.Check(settings.LifecycleRemovalMonth >= 1 && settings.LifecycleRemovalMonth <= 12, "lifecycle_removal_month", "must be between 1 and 12")
	v.Check(settings.LifecycleRemovalDay >= 1 && settings.LifecycleRemovalDay <= 31, "lifecycle_removal_day", "must be between 1 and 31")
	v.Check(strings.TrimSpace(settings.Timezone) != "", "timezone", "must be provided")
	if strings.TrimSpace(settings.Timezone) != "" {
		_, err := time.LoadLocation(settings.Timezone)
		v.Check(err == nil, "timezone", "must be a valid IANA timezone")
	}
}