<?php

namespace Modules\EcommerceFinance\Services;

use Illuminate\Validation\ValidationException;

/**
 * 「终版」目录的按表数据登记：确定每个页签的字段（决定导入模板与表格列）
 * 以及数据标题；数据本身独立存放，与基础目录互不影响。
 */
class PayablesFinalRegistry
{
    public const SECTION_SUPPLIER = 'supplier-payables-final';

    public const SECTION_COURIER = 'courier-payables-final';

    /** @var array<string,string> 供应商应付（终版）页签 */
    private const SUPPLIER_TITLES = [
        'product-prices' => '商品价格',
        'payment-reconciliation' => '货款对账',
        'return-reconciliation' => '退货对账',
        'invoice-deductions' => '发票扣款',
        'board-deductions' => '板材扣款',
        'compensation-details' => '赔偿明细',
        'advance-details' => '借支明细',
        'sample-deductions' => '样品扣款',
        'other-adjustments' => '其他扣款补款',
        'delivery-unpriced' => '送货未定价',
        'return-unpriced' => '退货未定价',
        'dropshipping-express' => '代发快递',
        'supplier-payables-report' => '供应商应付表',
    ];

    /** 所有终版导入模板都带“月份”列，方便按月导入和查看。 */
    private const MONTH_FIELD = ['summary_month' => ['label' => '月份', 'type' => 'month']];

    public function __construct(
        private readonly SupplierPayableMaintenanceRegistry $supplier,
        private readonly ProductPriceWorkbookImporter $productPrices,
        private readonly CourierPayableFinalRegistry $courier,
    ) {
    }

    public function supports(string $section, string $dataset): bool
    {
        return array_key_exists($dataset, $this->titles($section));
    }

    /** @return array<string,string> */
    public function titles(string $section): array
    {
        return match ($section) {
            self::SECTION_SUPPLIER => self::SUPPLIER_TITLES,
            self::SECTION_COURIER => $this->courier->titles(),
            default => [],
        };
    }

    public function title(string $section, string $dataset): string
    {
        $titles = $this->titles($section);
        if (! array_key_exists($dataset, $titles)) {
            throw ValidationException::withMessages(['dataset' => '不支持该终版目录页面。']);
        }

        return $titles[$dataset];
    }

    /** @return array<string,array{label:string,type:string}> */
    public function fields(string $section, string $dataset): array
    {
        $this->title($section, $dataset);

        $fields = $section === self::SECTION_COURIER
            ? $this->courier->fields($dataset)
            : ($dataset === 'product-prices'
                ? $this->productPrices->templateFields()
                : $this->supplier->fields($dataset));

        return self::MONTH_FIELD + $fields;
    }
}