<?php

declare(strict_types=1);

namespace LIT\MCP\Integrations\Divi\Release;

defined('ABSPATH') || exit;

/**
 * Divi versions released on this site after a green admin check (spec §5.3, source "database"). An entry holds for
 * the plugin version that ran the check only.
 *
 * Not final so the resolver can be tested with a mock.
 */
class ReleaseStore
{
    public const OPTION = 'lit_mcp_divi_releases';

    /**
     * @return list<array{divi_version: string, plugin_version: string, user_id: int, released_at: string,
     *     report_id: string}>
     */
    public function entries(): array
    {
        $raw = get_option(self::OPTION, []);
        $entries = [];
        foreach (is_array($raw) ? $raw : [] as $row) {
            if (
                is_array($row)
                && is_string($row['divi_version'] ?? null)
                && is_string($row['plugin_version'] ?? null)
                && is_int($row['user_id'] ?? null)
                && is_string($row['released_at'] ?? null)
                && is_string($row['report_id'] ?? null)
            ) {
                $entries[] = [
                    'divi_version' => $row['divi_version'],
                    'plugin_version' => $row['plugin_version'],
                    'user_id' => $row['user_id'],
                    'released_at' => $row['released_at'],
                    'report_id' => $row['report_id'],
                ];
            }
        }

        return $entries;
    }

    /**
     * @return array{divi_version: string, plugin_version: string, user_id: int, released_at: string,
     *     report_id: string}|null
     */
    public function find(string $diviVersion, string $pluginVersion): ?array
    {
        foreach ($this->entries() as $entry) {
            if ($entry['divi_version'] === $diviVersion && $entry['plugin_version'] === $pluginVersion) {
                return $entry;
            }
        }

        return null;
    }

    public function add(string $diviVersion, string $pluginVersion, int $userId, string $reportId): void
    {
        $entries = $this->without($diviVersion, $pluginVersion);
        $entries[] = [
            'divi_version' => $diviVersion,
            'plugin_version' => $pluginVersion,
            'user_id' => $userId,
            'released_at' => gmdate('c'),
            'report_id' => $reportId,
        ];
        update_option(self::OPTION, $entries, false);
    }

    public function withdraw(string $diviVersion, string $pluginVersion): bool
    {
        if ($this->find($diviVersion, $pluginVersion) === null) {
            return false;
        }
        update_option(self::OPTION, $this->without($diviVersion, $pluginVersion), false);

        return true;
    }

    /**
     * @return list<array{divi_version: string, plugin_version: string, user_id: int, released_at: string,
     *     report_id: string}>
     */
    private function without(string $diviVersion, string $pluginVersion): array
    {
        return array_values(array_filter(
            $this->entries(),
            static fn (array $entry): bool => $entry['divi_version'] !== $diviVersion
                || $entry['plugin_version'] !== $pluginVersion
        ));
    }
}