<?php

declare(strict_types=1);

namespace DS82\ThreeDPrintShowcase\Materials;

defined('ABSPATH') || exit;

final class MaterialOverrideStore
{
    public const OPTION = 'ds82_3dps_material_overrides';

    public function apply(Material $material): Material
    {
        if ('internal' === $material->source) return $material;

        $override = $this->get($material->identifier());
        if (!$override) return $material;

        $sourceData = array_merge($material->sourceData, $override);

        $useSourceAlpha = $material->source === 'acf_local'
            && isset($material->sourceData['acf_color_alpha'])
            && (float) $material->sourceData['acf_color_alpha'] < 1.0
            && empty($override['opacity_overridden']);

        $opacity = $useSourceAlpha
            ? $material->opacity
            : (float)($override['opacity'] ?? $material->opacity);
        $transparent = $useSourceAlpha
            ? $material->transparent
            : (array_key_exists('transparent',$override) ? !empty($override['transparent']) : $material->transparent);

        return new Material(
            source: $material->source,
            sourceId: $material->sourceId,
            slug: $material->slug,
            name: $material->name,
            materialType: $material->materialType,
            appearanceType: (string)($override['appearance_type'] ?? $material->appearanceType ?? 'standard'),
            colorMode: $material->colorMode,
            colorModeType: (string)($override['color_mode_type'] ?? $material->colorModeType ?? 'standard'),
            manufacturer: $material->manufacturer,
            baseColor: $material->baseColor,
            secondaryColors: $material->secondaryColors,
            backgroundColor: $this->nullable($override['background_color'] ?? $material->backgroundColor),
            textureUrl: $this->nullable($override['texture_url'] ?? $material->textureUrl),
            normalMapUrl: $this->nullable($override['normal_map_url'] ?? $material->normalMapUrl),
            roughness: (float)($override['roughness'] ?? $material->roughness),
            metalness: (float)($override['metalness'] ?? $material->metalness),
            opacity: $opacity,
            transparent: $transparent,
            previewImageUrl: $material->previewImageUrl,
            previewVideoUrl: $material->previewVideoUrl,
            sourceData: $sourceData
        );
    }

    public function get(string $identifier): array
    {
        $items = get_option(self::OPTION, []);
        return is_array($items) && is_array($items[$identifier] ?? null) ? $items[$identifier] : [];
    }

    public function editing_values(Material $material): array
    {
        $data = $material->jsonSerialize();
        return array_merge([
            'appearance_type' => (string)($data['appearance_type'] ?? 'standard'),
            'color_mode_type' => (string)($data['color_mode_type'] ?? 'standard'),
            'color_direction' => (string)($data['color_direction'] ?? 'left_right'),
            'color_blend_percent' => (float)($data['color_blend_percent'] ?? 45),
            'color_shares' => (array)($data['color_shares'] ?? [25,25,25,25]),
            'layer_band_percent' => (float)($data['layer_band_percent'] ?? 1),
            'layer_variation_percent' => (float)($data['layer_variation_percent'] ?? 10),
            'layer_blend_percent' => (float)($data['layer_blend_percent'] ?? 6),
            'background_color' => (string)($data['background_color'] ?? ''),
            'texture_url' => (string)($data['texture_url'] ?? ''),
            'normal_map_url' => (string)($data['normal_map_url'] ?? ''),
            'roughness' => (float)($data['roughness'] ?? .55),
            'metalness' => (float)($data['metalness'] ?? .05),
            'opacity' => (float)($data['opacity'] ?? 1),
            'transparent' => !empty($data['transparent']),
            'advanced_enabled' => !empty($data['advanced_enabled']),
            'clearcoat' => (float)($data['clearcoat'] ?? 0),
            'sheen' => (float)($data['sheen'] ?? 0),
            'iridescence' => (float)($data['iridescence'] ?? 0),
            'transmission' => (float)($data['transmission'] ?? 0),
            'ior' => (float)($data['ior'] ?? 1.5),
            'light_key' => (float)($data['light_key'] ?? 1.55),
            'light_fill' => (float)($data['light_fill'] ?? .55),
            'light_ambient' => (float)($data['light_ambient'] ?? .85),
            'exposure' => (float)($data['exposure'] ?? 1),
        ], $this->get($material->identifier()));
    }

    public function save(Material $material, array $input): void
    {
        if ('internal' === $material->source) return;
        $items = get_option(self::OPTION, []);
        $items = is_array($items) ? $items : [];

        $layout = sanitize_key((string)($input['color_mode_type'] ?? 'standard'));
        if (!in_array($layout,['standard','gradient','rainbow','layered'],true)) $layout='standard';
        $direction = sanitize_key((string)($input['color_direction'] ?? ($layout==='rainbow'?'bottom_top':'left_right')));
        if (!in_array($direction,['left_right','right_left','front_back','back_front','bottom_top','top_bottom'],true)) $direction='left_right';
        $appearance = sanitize_key((string)($input['appearance_type'] ?? 'standard'));
        if (!in_array($appearance,['standard','matte','glossy','silk','satin','metallic','pearl','transparent'],true)) $appearance='standard';

        $shares=[];
        for($i=1;$i<=4;$i++) $shares[]=min(100,max(1,(float)($input['color_share_'.$i] ?? 25)));

        $items[$material->identifier()] = [
            'appearance_type'=>$appearance,
            'color_mode_type'=>$layout,
            'color_direction'=>$direction,
            'color_blend_percent'=>min(100,max(0,(float)($input['color_blend_percent'] ?? 45))),
            'color_shares'=>$shares,
            'layer_band_percent'=>min(50,max(.25,(float)($input['layer_band_percent'] ?? 1))),
            'layer_variation_percent'=>min(25,max(0,(float)($input['layer_variation_percent'] ?? 10))),
            'layer_blend_percent'=>min(20,max(0,(float)($input['layer_blend_percent'] ?? 6))),
            'background_color'=>sanitize_hex_color((string)($input['background_color'] ?? '')) ?: '',
            'texture_url'=>esc_url_raw((string)($input['texture_url'] ?? '')),
            'normal_map_url'=>esc_url_raw((string)($input['normal_map_url'] ?? '')),
            'roughness'=>min(1,max(0,(float)($input['roughness'] ?? .55))),
            'metalness'=>min(1,max(0,(float)($input['metalness'] ?? .05))),
            'opacity'=>min(1,max(0,(float)($input['opacity'] ?? 1))),
            'transparent'=>isset($input['transparent']) && 'yes'===(string)$input['transparent'],
            'opacity_overridden'=>true,
            'advanced_enabled'=>isset($input['advanced_enabled']) && 'yes'===(string)$input['advanced_enabled'],
            'clearcoat'=>min(1,max(0,(float)($input['clearcoat'] ?? 0))),
            'sheen'=>min(1,max(0,(float)($input['sheen'] ?? 0))),
            'iridescence'=>min(1,max(0,(float)($input['iridescence'] ?? 0))),
            'transmission'=>min(1,max(0,(float)($input['transmission'] ?? 0))),
            'ior'=>min(2.5,max(1,(float)($input['ior'] ?? 1.5))),
            'light_key'=>min(3,max(0,(float)($input['light_key'] ?? 1.55))),
            'light_fill'=>min(2,max(0,(float)($input['light_fill'] ?? .55))),
            'light_ambient'=>min(2,max(0,(float)($input['light_ambient'] ?? .85))),
            'exposure'=>min(2,max(.25,(float)($input['exposure'] ?? 1))),
        ];
        update_option(self::OPTION,$items,false);
    }

    public function delete(string $identifier): void
    {
        $items=get_option(self::OPTION,[]);
        if(!is_array($items)) return;
        unset($items[$identifier]);
        update_option(self::OPTION,$items,false);
    }

    private function nullable(mixed $value): ?string
    {
        $value=trim((string)$value);
        return ''===$value?null:$value;
    }
}