<?php

declare(strict_types=1);

namespace DS82\ThreeDPrintShowcase\Core;

defined('ABSPATH') || exit;

final class Settings
{
    public const OPTION = 'ds82_3dps_settings';

    public static function defaults(): array
    {
        return [
            'height' => 560,
            'background_color' => '#f7f7f7',
            'default_model_color' => '#b7b7b7',
            'preview_model_url' => '',
            'auto_rotate' => 'no',
            'preview_auto_rotate' => 'no',
            'max_pixel_ratio' => 2.0,
            'fps_limit' => 45,
            'fullscreen' => 'yes',
            'lazy_loading' => 'yes',
            'disclaimer_enabled' => 'yes',
            'disclaimer_text' => __('3D material preview is approximate. The actual shade and color progression may vary depending on display settings, lighting, model geometry, and filament production batch.', '3d-print-showcase'),
            'debug' => 'no',
            'delete_data_on_uninstall' => 'no',
            'selection_mode' => 'builtin',
            'appearance_source' => 'builtin',
            'appearance_switching' => 'yes',
            'remember_appearance' => 'no',
            'appearance_display' => 'labels',
            'appearance_tooltips' => 'yes',
            'material_source' => 'internal',
            'custom_rest_url' => '',
            'user_viewer_enabled' => 'yes',
            'user_viewer_max_size' => 25,
            'user_viewer_formats' => ['stl', 'glb'],
            'user_viewer_material_mode' => 'all',
            'user_viewer_materials' => [],
        ];
    }

    public static function all(): array
    {
        $saved = get_option(self::OPTION, []);
        return wp_parse_args(is_array($saved) ? $saved : [], self::defaults());
    }

    public static function get(string $key, mixed $default = null): mixed
    {
        $settings = self::all();
        return $settings[$key] ?? $default;
    }

    public static function sanitize(array $input, array $allowedMaterialSources = [], array $allowedSelectionModes = []): array
    {
        $defaults = self::defaults();
        $output = self::all();

        foreach (['auto_rotate', 'preview_auto_rotate', 'fullscreen', 'lazy_loading', 'disclaimer_enabled', 'debug', 'delete_data_on_uninstall', 'appearance_switching', 'remember_appearance', 'appearance_tooltips', 'user_viewer_enabled'] as $key) {
            $output[$key] = isset($input[$key]) && 'yes' === $input[$key] ? 'yes' : 'no';
        }

        $output['height'] = min(1200, max(240, absint($input['height'] ?? $defaults['height'])));
        $output['background_color'] = sanitize_hex_color($input['background_color'] ?? '') ?: $defaults['background_color'];
        $output['default_model_color'] = sanitize_hex_color($input['default_model_color'] ?? '') ?: $defaults['default_model_color'];
        $previewModelUrl = esc_url_raw((string) ($input['preview_model_url'] ?? $defaults['preview_model_url']));
        $previewPath = (string) wp_parse_url($previewModelUrl, PHP_URL_PATH);
        $previewFormat = strtolower((string) pathinfo($previewPath, PATHINFO_EXTENSION));
        $output['preview_model_url'] = '' === $previewModelUrl || in_array($previewFormat, ['stl', '3mf', 'glb', 'gltf'], true) ? $previewModelUrl : ''; 
        $output['max_pixel_ratio'] = min(3.0, max(1.0, (float) ($input['max_pixel_ratio'] ?? $defaults['max_pixel_ratio'])));
        $output['fps_limit'] = min(60, max(15, absint($input['fps_limit'] ?? $defaults['fps_limit'])));
        $output['disclaimer_text'] = sanitize_textarea_field((string) ($input['disclaimer_text'] ?? $defaults['disclaimer_text']));


        $output['user_viewer_max_size'] = min(200, max(1, absint($input['user_viewer_max_size'] ?? $defaults['user_viewer_max_size'])));
        $allowedFormats = ['stl', 'glb', '3mf'];
        $formats = isset($input['user_viewer_formats']) && is_array($input['user_viewer_formats']) ? $input['user_viewer_formats'] : [];
        $output['user_viewer_formats'] = array_values(array_intersect($allowedFormats, array_map('sanitize_key', $formats)));
        if (!$output['user_viewer_formats']) {
            $output['user_viewer_formats'] = $defaults['user_viewer_formats'];
        }
        $materialMode = sanitize_key((string) ($input['user_viewer_material_mode'] ?? $defaults['user_viewer_material_mode']));
        $output['user_viewer_material_mode'] = in_array($materialMode, ['all', 'include', 'exclude'], true) ? $materialMode : 'all';
        $materialIds = isset($input['user_viewer_materials']) && is_array($input['user_viewer_materials']) ? $input['user_viewer_materials'] : [];
        $output['user_viewer_materials'] = array_values(array_unique(array_filter(array_map('sanitize_text_field', $materialIds))));

        $materialSource = sanitize_key((string) ($input['material_source'] ?? $output['material_source'] ?? $defaults['material_source']));
        if ($allowedMaterialSources && !in_array($materialSource, $allowedMaterialSources, true)) {
            $materialSource = $allowedMaterialSources[0];
        }
        $output['material_source'] = $materialSource;

        if (array_key_exists('custom_rest_url', $input)) {
            $output['custom_rest_url'] = esc_url_raw(trim((string) $input['custom_rest_url']));
        }

        $selectionMode = sanitize_key((string) ($input['selection_mode'] ?? $output['selection_mode'] ?? $defaults['selection_mode']));
        if ($allowedSelectionModes && !in_array($selectionMode, $allowedSelectionModes, true)) {
            $selectionMode = $allowedSelectionModes[0];
        }
        $output['selection_mode'] = $selectionMode;

        $appearanceSource = sanitize_key((string) ($input['appearance_source'] ?? $output['appearance_source'] ?? $defaults['appearance_source']));
        $output['appearance_source'] = in_array($appearanceSource, ['builtin', 'variations', 'combined'], true) ? $appearanceSource : $defaults['appearance_source'];

        $appearanceDisplay = sanitize_key((string) ($input['appearance_display'] ?? $output['appearance_display'] ?? $defaults['appearance_display']));
        $output['appearance_display'] = in_array($appearanceDisplay, ['labels', 'swatches'], true) ? $appearanceDisplay : $defaults['appearance_display'];

        return $output;
    }

    public static function sanitize_mapping(array $mapping): array
    {
        $clean = [];
        foreach ($mapping as $key => $identifier) {
            $key = sanitize_text_field((string) $key);
            $identifier = sanitize_text_field((string) $identifier);
            if ('' !== $key && '' !== $identifier) {
                $clean[$key] = $identifier;
            }
        }
        return $clean;
    }
}