<?php

declare(strict_types=1);

namespace App\Support\BackupHealth;

use App\Support\BackupQuality\BackupQualitySummary;
use Carbon\CarbonInterface;

final readonly class TenantBackupHealthAssessment
{
    public const POSTURE_ABSENT = 'absent';

    public const POSTURE_STALE = 'stale';

    public const POSTURE_DEGRADED = 'degraded';

    public const POSTURE_HEALTHY = 'healthy';

    public const REASON_NO_BACKUP_BASIS = 'no_backup_basis';

    public const REASON_LATEST_BACKUP_STALE = 'latest_backup_stale';

    public const REASON_LATEST_BACKUP_DEGRADED = 'latest_backup_degraded';

    public const REASON_SCHEDULE_FOLLOW_UP = 'schedule_follow_up';

    public function __construct(
        public int $tenantId,
        public string $posture,
        public ?string $primaryReason,
        public string $headline,
        public ?string $supportingMessage,
        public ?int $latestRelevantBackupSetId,
        public ?CarbonInterface $latestRelevantCompletedAt,
        public ?BackupQualitySummary $qualitySummary,
        public BackupFreshnessEvaluation $freshnessEvaluation,
        public BackupScheduleFollowUpEvaluation $scheduleFollowUp,
        public bool $healthyClaimAllowed,
        public ?BackupHealthActionTarget $primaryActionTarget,
        public string $positiveClaimBoundary,
    ) {}

    public function hasActiveReason(): bool
    {
        return $this->primaryReason !== null;
    }

    public function tone(): string
    {
        return match ($this->primaryReason ?? $this->posture) {
            self::REASON_NO_BACKUP_BASIS => 'danger',
            self::REASON_LATEST_BACKUP_STALE => 'warning',
            self::REASON_LATEST_BACKUP_DEGRADED => 'warning',
            self::REASON_SCHEDULE_FOLLOW_UP => 'warning',
            self::POSTURE_HEALTHY => 'success',
            default => 'gray',
        };
    }
}