<?php

declare(strict_types=1);

namespace DS82\ThreeDPrintShowcase\Integrations\WooCommerce\Frontend;

use DS82\ThreeDPrintShowcase\Core\Settings;
use DS82\ThreeDPrintShowcase\Materials\MaterialRepository;
use DS82\ThreeDPrintShowcase\Support\ProductMeta;

defined('ABSPATH') || exit;

final class ViewerConfig
{
    public function __construct(private readonly MaterialRepository $materials) {}

    public function for_product(int $productId, array $overrides = []): ?array
    {
        if ('yes' !== Settings::get('enabled', 'yes') || 'yes' !== ProductMeta::get($productId, 'enabled', 'no')) {
            return null;
        }

        $attachmentId = absint(ProductMeta::get($productId, 'model_attachment_id', 0));
        $modelUrl = $attachmentId ? wp_get_attachment_url($attachmentId) : ProductMeta::get($productId, 'model_url', '');
        $modelUrl = apply_filters('ds82_3dps_model_url', $modelUrl, $productId, $attachmentId);
        $settings = Settings::all();
        $defaultMaterial = sanitize_text_field((string) ProductMeta::get($productId, 'default_material', ''));
        $available = ProductMeta::get($productId, 'available_materials', []);
        $available = is_array($available) ? array_values(array_filter(array_map('strval', $available))) : [];
        if ('builtin' === sanitize_key((string) $settings['selection_mode']) && $available && !in_array($defaultMaterial, $available, true)) {
            $defaultMaterial = (string) $available[0];
        }
        $identifiers = array_values(array_unique(array_filter(array_merge([$defaultMaterial], $available))));
        $identifiers = apply_filters('ds82_3d_print_showcase_material_identifiers', $identifiers, $productId);

        $materialData = [];
        foreach ((array) $identifiers as $identifier) {
            $identifier = sanitize_text_field((string) $identifier);
            $material = $this->materials->find($identifier);
            if ($material) {
                $materialData[$identifier] = $material->jsonSerialize();
                $materialData[$material->display_id()] = $material->jsonSerialize();
            }
        }

        $fallbackId = absint(ProductMeta::get($productId, 'fallback_image_id', 0)) ?: get_post_thumbnail_id($productId);
        $height = absint(ProductMeta::get($productId, 'height', 0)) ?: (int) $settings['height'];
        if (!empty($overrides['height'])) {
            $height = min(1200, max(240, absint($overrides['height'])));
        }

        $autoRotateMeta = ProductMeta::get($productId, 'auto_rotate', '');
        $autoRotate = '' !== $autoRotateMeta ? 'yes' === $autoRotateMeta : 'yes' === $settings['auto_rotate'];

        return [
            'productId' => $productId,
            'modelUrl' => esc_url_raw((string) $modelUrl),
            'modelFormat' => $this->resolve_model_format($productId, (string) $modelUrl),
            'fallbackImageUrl' => $fallbackId ? wp_get_attachment_image_url($fallbackId, 'large') : null,
            'height' => $height,
            'backgroundColor' => sanitize_hex_color((string) $settings['background_color']) ?: '#f7f7f7',
            'defaultModelColor' => sanitize_hex_color((string) ($settings['default_model_color'] ?? '')) ?: '#b7b7b7',
            'autoRotate' => $autoRotate,
            'maxPixelRatio' => (float) $settings['max_pixel_ratio'],
            'fpsLimit' => (int) $settings['fps_limit'],
            'fullscreen' => 'yes' === $settings['fullscreen'],
            'lazyLoading' => 'yes' === $settings['lazy_loading'],
            'defaultMaterial' => $defaultMaterial,
            'materials' => $materialData,
            'selectionMode' => sanitize_key((string) $settings['selection_mode']),
            'materialEndpoint' => rest_url('ds82-3dps/v1/materials/'),
            'nonce' => is_user_logged_in() ? wp_create_nonce('wp_rest') : '',
            'strings' => [
                'loading' => __('Loading 3D model…', '3d-print-showcase'),
                'materialLoading' => __('Loading selected color…', '3d-print-showcase'),
                'error' => __('The 3D model could not be displayed.', '3d-print-showcase'),
                'webglError' => __('This browser does not support WebGL.', '3d-print-showcase'),
                'slicerProject3mf' => __('This 3MF file is a slicer project (Bambu Studio, OrcaSlicer, PrusaSlicer, or similar), not a standard 3D model. Export the model as a standard 3MF, GLB, or STL file.', '3d-print-showcase'),
                'reset' => __('Reset view', '3d-print-showcase'),
                'fullscreen' => __('Fullscreen', '3d-print-showcase'),
                'rotation' => __('Toggle auto rotation', '3d-print-showcase'),
                'reason' => __('Reason', '3d-print-showcase'),
                'unknownError' => __('Unknown error.', '3d-print-showcase'),
                'networkError' => __('Network error or blocked access to the file (CORS).', '3d-print-showcase'),
            ],
        ];
    }

    private function resolve_model_format(int $productId, string $modelUrl): string
    {
        $stored = sanitize_key((string) ProductMeta::get($productId, 'model_format', ''));
        if (in_array($stored, ['stl', '3mf', 'glb', 'gltf'], true)) {
            return $stored;
        }
        if ('' === trim($modelUrl)) {
            return 'default';
        }
        $path = (string) wp_parse_url($modelUrl, PHP_URL_PATH);
        $extension = sanitize_key(strtolower((string) pathinfo($path, PATHINFO_EXTENSION)));
        return in_array($extension, ['stl', '3mf', 'glb', 'gltf'], true) ? $extension : '3mf';
    }

    public function position(int $productId): string
    {
        $position = sanitize_key((string) ProductMeta::get($productId, 'position', ''));
        return $position ?: sanitize_key((string) Settings::get('position', 'after_gallery'));
    }
}