<?php

namespace Modules\EcommerceFinance\Http\Controllers\Api;

use App\Abstracts\Http\ApiController;
use Modules\EcommerceFinance\Repositories\GoodsReconciliationRepository;
use Modules\EcommerceFinance\Services\JianSunQueryCache;
use Modules\EcommerceFinance\Services\SupplierPayableOverrideStore;

/**
 * 货款对账 API
 *
 * 提供供应商应付-货款对账页面的全部数据接口：
 *   GET /api/ecommerce-finance/goods-reconciliations        列表（分页 + 筛选）
 *   GET /api/ecommerce-finance/goods-reconciliations/summary 统计卡片
 *   GET /api/ecommerce-finance/goods-reconciliations/options 筛选器选项
 */
class GoodsReconciliations extends ApiController
{
    private GoodsReconciliationRepository $repo;

    private JianSunQueryCache $cache;

    public function __construct(GoodsReconciliationRepository $repo, JianSunQueryCache $cache, private readonly SupplierPayableOverrideStore $overrides)
    {
        $this->repo = $repo;
        $this->cache = $cache;
    }

    /**
     * 货款对账列表（分页 + 筛选）
     */
    public function index()
    {
        $filters = $this->buildFilters();
        $page    = max((int) request('page', 1), 1);
        $limit   = $this->limit();

        $result = $this->cache->remember(
            'goods.list',
            ['filters' => $filters, 'page' => $page, 'limit' => $limit],
            fn () => $this->repo->list($filters, $page, $limit)
        );

        $result['data'] = $this->overrides->decorate('payment-reconciliation', $result['data'] ?? [], (int) (company_id() ?: 1));

        return $this->snapshotResponse([
            'data'       => $result['data'],
            'total'      => $result['total'],
            'page'       => $page,
            'per_page'   => $limit,
            'last_page'  => (int) ceil($result['total'] / $limit),
        ]);
    }

    /**
     * 汇总统计卡片
     */
    public function summary()
    {
        $filters = $this->buildFilters();
        $summary = $this->cache->remember(
            'goods.summary',
            ['filters' => $filters],
            fn () => $this->repo->summary($filters)
        );

        return $this->snapshotResponse($summary);
    }

    /**
     * 筛选器选项（供应商/仓库下拉列表等）
     */
    public function options()
    {
        $options = $this->cache->remember(
            'goods.options',
            [],
            fn () => $this->repo->filterOptions()
        );

        return $this->snapshotResponse($options);
    }

    // ===================================================================
    // Helpers
    // ===================================================================

    private function snapshotResponse(array $payload)
    {
        $response = response()->json($payload);

        foreach ($this->cache->responseHeaders() as $name => $value) {
            $response->headers->set($name, $value);
        }

        return $response;
    }

    /**
     * 从请求参数构建筛选条件
     */
    private function buildFilters(): array
    {
        $filters = [];

        // 记录类型
        if ($type = request('record_type')) {
            $filters['record_type'] = $type; // purchase | sale | all
        }

        // 文本筛选
        $textFields = ['supplier', 'stock_no', 'purchase_no', 'product_code', 'express_no', 'warehouse'];
        foreach ($textFields as $field) {
            if ($val = request($field)) {
                $filters[$field] = trim($val);
            }
        }

        // 日期范围
        $dateFields = ['send_time_from', 'send_time_to', 'create_time_from', 'create_time_to'];
        foreach ($dateFields as $field) {
            if ($val = request($field)) {
                $filters[$field] = $val;
            }
        }

        // 发出状态
        if (($sent = request('sent_status')) && $sent !== 'all') {
            $filters['sent_status'] = $sent; // sent | unsent
        }

        // 是否有差异
        if (request('has_diff')) {
            $filters['has_diff'] = true;
        }

        return $filters;
    }

    private function limit(): int
    {
        return min(max((int) request('limit', 25), 1), 100);
    }
}