<?php

declare(strict_types=1);

namespace LinkCheckup\Features\Fixes;

use LinkCheckup\Shared\Links\Link;
use LinkCheckup\Shared\Links\Outcome;
use LinkCheckup\Shared\Links\Verdict;

enum FixAction: string {

	case Replace  = 'replace';
	case Update   = 'update';
	case Remove   = 'remove';
	case Redirect = 'redirect';
	case Ignore   = 'ignore';
	case Works    = 'works';

	public function changes_posts(): bool {
		return match ( $this ) {
			self::Replace, self::Update, self::Remove => true,
			default => false,
		};
	}

	public function needs_new_url(): bool {
		return match ( $this ) {
			self::Replace, self::Redirect => true,
			default => false,
		};
	}

	public function outcome(): Outcome {
		return match ( $this ) {
			self::Remove => Outcome::Removed,
			self::Ignore => Outcome::Ignored,
			default => Outcome::Resolved,
		};
	}

	public function applies_to( Link $link ): bool {
		$is_broken = Verdict::Broken === $link->verdict;
		$is_moved  = Verdict::Moved === $link->verdict;

		return match ( $this ) {
			self::Replace, self::Remove => $is_broken || $is_moved,
			self::Update => $is_moved && null !== $link->final_url,
			self::Redirect => $is_broken && $link->internal,
			self::Works => Verdict::Blocked === $link->verdict,
			default => true,
		};
	}
}