<?php

namespace Modules\EcommerceFinance\Repositories;

use Modules\EcommerceFinance\Services\UpstreamReadOnlyQuery;
use Modules\EcommerceFinance\Services\UpstreamReadOnlyQueryFactory;

/**
 * 原材料库存管理只读数据仓库。
 */
class InventoryRepository
{
    private const SOURCE = 'jiansun';

    private const SUMMARY_KEYS = [
        'opening_balance',
        'stock_in',
        'lamination_out',
        'inventory',
        'remaining_value',
        'stock_in_amount',
        'closing_remaining_value',
        'previous_remaining_value',
        'stock_out_amount',
    ];

    private ?UpstreamReadOnlyQuery $query = null;

    public function __construct(private readonly UpstreamReadOnlyQueryFactory $queries)
    {
    }

    /** @return array{data:array<int,array<string,mixed>>,total:int,totals:array<string,float>} */
    public function boardInventoryDetails(array $filters, int $page, int $limit): array
    {
        $where = [
            's.stockType = ?',
            's.[month] = (SELECT MAX(latest.[month]) FROM [dbo].[pm_boardInventoryDetail_snapshot] latest WHERE latest.stockType = ?)',
        ];
        $bindings = ['素板', '素板'];

        if (($filters['manufacturer'] ?? '') !== '') {
            $where[] = 's.supplier LIKE ? ESCAPE \'\\\'';
            $bindings[] = $this->contains($filters['manufacturer']);
        }
        if (($filters['specification'] ?? '') !== '') {
            $where[] = 's.name LIKE ? ESCAPE \'\\\'';
            $bindings[] = $this->contains($filters['specification']);
        }
        if (($filters['matching_value'] ?? '') !== '') {
            $where[] = 's.number LIKE ? ESCAPE \'\\\'';
            $bindings[] = $this->contains($filters['matching_value']);
        }
        if (($filters['date_from'] ?? '') !== '') {
            $where[] = 'CONVERT(date, COALESCE(s.[date], s.[month])) >= ?';
            $bindings[] = $filters['date_from'];
        }
        if (($filters['date_to'] ?? '') !== '') {
            $where[] = 'CONVERT(date, COALESCE(s.[date], s.[month])) <= ?';
            $bindings[] = $filters['date_to'];
        }

        $page = max($page, 1);
        $limit = min(max($limit, 1), 100);
        $offset = ($page - 1) * $limit;
        $whereSql = implode(' AND ', $where);

        $sql = "WITH source_rows AS (
                    SELECT
                        ISNULL(s.supplier, '') AS manufacturer,
                        CONVERT(varchar(10), COALESCE(s.[date], s.[month]), 120) AS [date],
                        ISNULL(s.name, '') AS specification,
                        ISNULL(s.number, '') AS matching_value,
                        CAST(ISNULL(s.lastBalance, 0) AS decimal(18,2)) AS opening_balance,
                        CAST(ISNULL(s.averagePrice, 0) AS decimal(18,2)) AS weighted_average_price,
                        CAST(ISNULL(s.inCount, 0) AS decimal(18,2)) AS stock_in,
                        CAST(ISNULL(s.deliveryCount, 0) AS decimal(18,2)) AS lamination_out,
                        CAST(ISNULL(s.balance, 0) AS decimal(18,2)) AS inventory,
                        CAST(ISNULL(s.surplusPrice, 0) AS decimal(18,2)) AS remaining_value,
                        CAST(ISNULL(s.inCount, 0) * ISNULL(s.averagePrice, 0) AS decimal(18,2)) AS stock_in_amount,
                        CAST(ISNULL(s.balance, 0) * ISNULL(s.averagePrice, 0) AS decimal(18,2)) AS closing_remaining_value,
                        CAST(ISNULL(s.lastBalance, 0) * ISNULL(s.averagePrice, 0) AS decimal(18,2)) AS previous_remaining_value,
                        CAST(ISNULL(s.deliveryCount, 0) * ISNULL(s.averagePrice, 0) AS decimal(18,2)) AS stock_out_amount,
                        CAST(SUM(CAST(ISNULL(s.lastBalance, 0) AS decimal(38,2))) OVER () AS decimal(18,2)) AS summary_opening_balance,
                        CAST(SUM(CAST(ISNULL(s.inCount, 0) AS decimal(38,2))) OVER () AS decimal(18,2)) AS summary_stock_in,
                        CAST(SUM(CAST(ISNULL(s.deliveryCount, 0) AS decimal(38,2))) OVER () AS decimal(18,2)) AS summary_lamination_out,
                        CAST(SUM(CAST(ISNULL(s.balance, 0) AS decimal(38,2))) OVER () AS decimal(18,2)) AS summary_inventory,
                        CAST(SUM(CAST(ISNULL(s.surplusPrice, 0) AS decimal(38,2))) OVER () AS decimal(18,2)) AS summary_remaining_value,
                        CAST(SUM(CAST(ISNULL(s.inCount, 0) * ISNULL(s.averagePrice, 0) AS decimal(38,2))) OVER () AS decimal(18,2)) AS summary_stock_in_amount,
                        CAST(SUM(CAST(ISNULL(s.balance, 0) * ISNULL(s.averagePrice, 0) AS decimal(38,2))) OVER () AS decimal(18,2)) AS summary_closing_remaining_value,
                        CAST(SUM(CAST(ISNULL(s.lastBalance, 0) * ISNULL(s.averagePrice, 0) AS decimal(38,2))) OVER () AS decimal(18,2)) AS summary_previous_remaining_value,
                        CAST(SUM(CAST(ISNULL(s.deliveryCount, 0) * ISNULL(s.averagePrice, 0) AS decimal(38,2))) OVER () AS decimal(18,2)) AS summary_stock_out_amount,
                        ROW_NUMBER() OVER (
                            ORDER BY COALESCE(s.[date], s.[month]) DESC, s.supplier, s.name, s.number, s.id DESC
                        ) AS row_no,
                        COUNT(*) OVER () AS total_count
                    FROM [dbo].[pm_boardInventoryDetail_snapshot] s
                    WHERE {$whereSql}
                )
                SELECT manufacturer, [date], specification, matching_value,
                       opening_balance, weighted_average_price, stock_in, lamination_out,
                       inventory, remaining_value, stock_in_amount, closing_remaining_value,
                       previous_remaining_value, stock_out_amount,
                       summary_opening_balance, summary_stock_in, summary_lamination_out,
                       summary_inventory, summary_remaining_value, summary_stock_in_amount,
                       summary_closing_remaining_value, summary_previous_remaining_value,
                       summary_stock_out_amount, total_count
                FROM source_rows
                WHERE row_no BETWEEN ? AND ?
                ORDER BY row_no";

        $rows = $this->query()->select($sql, array_merge($bindings, [$offset + 1, $offset + $limit]));
        $totals = array_fill_keys(self::SUMMARY_KEYS, 0.0);

        if ($rows !== []) {
            foreach (self::SUMMARY_KEYS as $key) {
                $totals[$key] = (float) ($rows[0]['summary_' . $key] ?? 0);
            }
        }

        $total = (int) ($rows[0]['total_count'] ?? 0);

        foreach ($rows as &$row) {
            unset($row['total_count']);

            foreach (self::SUMMARY_KEYS as $key) {
                unset($row['summary_' . $key]);
            }
        }

        return ['data' => $rows, 'total' => $total, 'totals' => $totals];
    }

    private function query(): UpstreamReadOnlyQuery
    {
        return $this->query ??= $this->queries->forSource(self::SOURCE);
    }

    private function contains(string $value): string
    {
        return '%' . str_replace(['\\', '%', '_'], ['\\\\', '\\%', '\\_'], trim($value)) . '%';
    }
}