<?php
/**
 * @package Aumframe
 */

namespace Aumframe;

use WP_CLI;

defined('ABSPATH') || exit;

class Cli
{
    public function import($args, $assoc)
    {
        $zip = $args[0] ?? '';

        if ($zip === '' || !is_readable($zip)) {
            WP_CLI::error(sprintf('Cannot read that package: %s', $zip));   // error() exits 1 and writes to stderr.
        }

        if (!get_current_user_id()) {
            $admins = get_users(['role' => 'administrator', 'number' => 1, 'fields' => 'ID']);
            if (!$admins) {
                WP_CLI::error('This site has no administrator account. An import needs one to attribute authors and sideload media.');
            }
            wp_set_current_user((int) $admins[0]);
        }

        foreach (['file.php', 'media.php', 'image.php'] as $f) {
            require_once ABSPATH . 'wp-admin/includes/' . $f;
        }

        $started = microtime(true);
        $opts = [
            'siteIdentity' => !empty($assoc['site-identity']),
            'componentsOnly' => !empty($assoc['components-only']),
            'dryRun'       => !empty($assoc['dry-run']),
        ];

        try {
            $res = Kit\Package::import($zip, $opts);
        } catch (\Throwable $e) {
            WP_CLI::error(sprintf('The import threw an exception: %s', $e->getMessage()));
        }

        if (empty($res['ok'])) {
            WP_CLI::error(sprintf('The import failed: %s', $res['error'] ?? 'the package could not be parsed'));
        }

        $warnings = (array) ($res['warnings'] ?? []);
        $secs     = round(microtime(true) - $started, 1);

        $stats = [
            'site'          => get_current_blog_id(),
            'url'           => home_url('/'),
            'contentModel'  => (int) ($res['contentModel'] ?? 0),
            'terms'         => (int) ($res['terms'] ?? 0),
            'posts'         => (int) ($res['posts'] ?? 0),
            'media'         => (int) ($res['media'] ?? 0),
            'library'       => (int) ($res['library'] ?? 0),
            'templates'     => (int) ($res['templates'] ?? 0),
            'menus'         => (int) ($res['menus'] ?? 0),
            'warnings'      => count($warnings),
            'seconds'       => $secs,
        ];

        foreach ($warnings as $w) {
            WP_CLI::warning((string) $w);
        }

        if (!empty($assoc['porcelain'])) {
            WP_CLI::line(wp_json_encode($stats));
            WP_CLI::halt(0);
        }

        WP_CLI::success(sprintf(
            '%s - content %d, terms %d, media %d, components %d, templates %d, menus %d, warnings %d (%ss)',
            $stats['url'], $stats['posts'], $stats['terms'], $stats['media'], (int) ($stats['library'] ?? 0),
            $stats['templates'], $stats['menus'], $stats['warnings'], $secs
        ));
    }

    public function kit_requires($args, $assoc)
    {
        $zip = $args[0] ?? '';
        if ($zip === '' || !is_readable($zip)) {
            WP_CLI::error(sprintf('Cannot read that package: %s', $zip));
        }

        if (!class_exists('\ZipArchive')) {
            throw new \RuntimeException('This needs PHP\'s zip extension (ZipArchive), which is not installed on this server.');
        }

        $za = new \ZipArchive();
        if ($za->open($zip) !== true) {
            WP_CLI::error('That package could not be opened.');
        }
        $json = $za->getFromName('kit.json');
        $za->close();
        if ($json === false) {
            WP_CLI::error('The package contains no kit.json.');
        }

        $kit = json_decode((string) $json);
        $req = $kit->requires ?? null;
        $out = [
            'kit'      => (string) ($kit->meta->slug ?? ''),
            'version'  => (string) ($kit->meta->version ?? ''),
            'theme'    => (string) ($req->theme ?? ''),
            'plugins'  => array_values(array_map('strval', (array) ($req->plugins ?? []))),
            'optional' => array_values(array_map('strval', (array) ($req->optional ?? []))),
        ];

        if (!empty($assoc['porcelain'])) {
            WP_CLI::line(wp_json_encode($out));
            WP_CLI::halt(0);
        }
        WP_CLI::line(sprintf('%s %s - theme %s, plugins %s',
            $out['kit'], $out['version'], $out['theme'],
            $out['plugins'] ? implode(' ', $out['plugins']) : '(no additional dependencies)'));
    }

    public function doctor($args, $assoc)
    {
        $urls = Kit\Importer::audit_foreign_uploads();
        $col  = Kit\Importer::audit_collapsed_instances();

        $known = get_option('aumframe_kit_components', null);
        $cmp   = is_array($known) && $known ? Kit\Importer::audit_stray_components(
            array_map(static function ($slug) {
                return (object) ['slug' => $slug];
            }, $known)
        ) : null;

        if (!empty($assoc['porcelain'])) {
            WP_CLI::line((string) wp_json_encode([
                'foreignUploads'      => $urls,
                'strayComponents'     => $cmp,
                'collapsedInstances'  => $col,
            ]));
            WP_CLI::halt($urls['foreign'] > 0 || ($cmp && $cmp['stray'] > 0) || $col['collapsed'] > 0 ? 1 : 0);
        }

        WP_CLI::line(sprintf(
            'Image URLs   scanned %d, pointing off-site %d%s',
            $urls['scanned'],
            $urls['foreign'],
            $urls['hosts'] ? '（' . implode('、', $urls['hosts']) . '）' : ''
        ));
        foreach ($urls['samples'] as $u) {
            WP_CLI::line('            ' . $u);
        }

        if ($cmp === null) {
            WP_CLI::line('Components   this site has no record of which kit it has, so this section cannot be answered (no kit was ever imported, or it was imported before 1.33.0)');
        } else {
            WP_CLI::line(sprintf(
                'Components   %d on this site, %d not belonging to this kit%s',
                $cmp['total'],
                $cmp['stray'],
                $cmp['slugs'] ? '（' . implode('、', array_slice($cmp['slugs'], 0, 10)) . '）' : ''
            ));
        }

        WP_CLI::line(sprintf(
            'Designs      scanned %d, with collapsed compiled output %d (across %d instances)%s',
            $col['scanned'],
            $col['collapsed'],
            $col['instances'],
            $col['slugs'] ? '（' . implode('、', $col['slugs']) . '）' : ''
        ));
        if ($col['collapsed'] > 0) {
            WP_CLI::line('             On those designs, component instances with per-node overrides render as the component itself, so several instances look identical.');
            WP_CLI::line('             Fix: open each one in the editor and save it again. The design data was never wrong; only the compiled output is,');
            WP_CLI::line('             and compiling happens only on save, so updating the plugin does not repair them on its own.');
        }

        if ($urls['foreign'] === 0 && $urls['scanned'] === 0) {
            WP_CLI::warning('No image URL was scanned at all. Either this site has no designs, or this check is broken.');
        }
        if ($col['scanned'] === 0) {
            WP_CLI::warning('No design was scanned at all. Either this site has no designs, or this check is broken.');
        }
        if ($urls['foreign'] > 0 || ($cmp && $cmp['stray'] > 0) || $col['collapsed'] > 0) {
            WP_CLI::halt(1);
        }
        WP_CLI::success('No problems found.');
    }

}