<?php

namespace App\Http\Livewire\Business;

use App\Business\ThirdPartyWarehouseStorageFeeCalculator;
use App\Exports\ThirdPartyWarehouseStorageDetailExport;
use App\Exports\ThirdPartyWarehouseStorageSettlementExport;
use App\Models\Business\ThirdPartyWarehouseStorageSettlement;
use App\Utilities\SidebarPermissions;
use Illuminate\Contracts\View\View;
use Livewire\Attributes\Locked;
use Livewire\Component;
use Maatwebsite\Excel\Facades\Excel;
use Symfony\Component\HttpFoundation\BinaryFileResponse;

class WarehouseFreight extends Component
{
    /** 固定核算「三方-南昌樵舍仓」，与镜像仓库一致。 */
    public const WAREHOUSE_ID = 15045364;

    #[Locked]
    public string $warehouseName = '南昌樵舍仓';

    /** 仓储费核算 */
    public string $settlementPeriod = '';

    /** @var array<string,mixed>|null */
    public ?array $settlementSummary = null;

    public ?string $settlementMessage = null;

    public ?string $settlementError = null;

    public ?string $settlementDetailPeriod = null;

    public string $settlementDetailDate = '';

    /** @var list<string> */
    public array $settlementDetailDates = [];

    public ?string $settlementDetailMessage = null;

    public function mount(): void
    {
        $this->ensureAuthenticated();
        $this->settlementPeriod = now()->startOfMonth()->subMonth()->format('Y-m');
    }

    public function calculateStorageFee(): void
    {
        $this->ensureAuthenticated();
        $this->settlementMessage = null;
        $this->settlementError = null;

        $this->validate([
            'settlementPeriod' => ['required', 'regex:/^\d{4}-(0[1-9]|1[0-2])$/'],
        ], [
            'settlementPeriod.regex' => '结算月份格式应为 YYYY-MM。',
        ]);

        try {
            $result = app(ThirdPartyWarehouseStorageFeeCalculator::class)
                ->calculate(self::WAREHOUSE_ID, $this->warehouseName, $this->settlementPeriod);
        } catch (\Symfony\Component\HttpKernel\Exception\HttpException $e) {
            $this->settlementError = $e->getMessage();

            return;
        }

        $summary = $result['summary'];
        ThirdPartyWarehouseStorageSettlement::query()->updateOrCreate(
            [
                'company_id' => (int) company_id(),
                'warehouse_id' => self::WAREHOUSE_ID,
                'period' => $this->settlementPeriod,
            ],
            [
                'warehouse_name' => $this->warehouseName,
                'quote_id' => $summary['quote_id'] ?? null,
                'inbound_rate_per_ton' => $summary['inbound_rate_per_ton'],
                'outbound_rate_per_order' => $summary['outbound_rate_per_order'],
                'pieces_per_pallet' => $summary['pieces_per_pallet'],
                'pallet_area_sqm' => $summary['pallet_area_sqm'],
                'storage_rate_per_sqm_month' => $summary['storage_rate_per_sqm_month'],
                'days_in_month' => $summary['days_in_month'],
                'inbound_tons' => $summary['inbound_tons'],
                'outbound_qty' => $summary['outbound_qty'],
                'inbound_fee' => $summary['inbound_fee'],
                'outbound_fee' => $summary['outbound_fee'],
                'storage_fee' => $summary['storage_fee'],
                'memo_fee' => $summary['memo_fee'],
                'loss_fee' => $summary['loss_fee'],
                'compensation_fee' => $summary['compensation_fee'],
                'total_fee' => $summary['total_fee'],
                'detail_json' => [
                    'daily' => $result['daily'],
                    'per_sku' => $result['per_sku'],
                    'daily_sku' => $result['daily_sku'],
                ],
                'calculated_by' => (int) user_id(),
            ],
        );

        $this->settlementSummary = $summary;
        $this->settlementMessage = $this->settlementPeriod . ' 仓储费核算完成，已存档。';
    }

    public function exportSettlement(string $period): ?BinaryFileResponse
    {
        $this->ensureAuthenticated();

        $settlement = ThirdPartyWarehouseStorageSettlement::query()
            ->where('company_id', (int) company_id())
            ->where('warehouse_id', self::WAREHOUSE_ID)
            ->where('period', $period)
            ->first();

        if ($settlement === null) {
            $this->settlementError = '未找到 ' . $period . ' 的核算存档，请先核算。';

            return null;
        }

        $detail = $settlement->detail_json ?: ['daily' => [], 'per_sku' => [], 'daily_sku' => []];
        $result = [
            'summary' => $this->summaryFromSettlement($settlement),
            'daily' => $detail['daily'] ?? [],
            'per_sku' => $detail['per_sku'] ?? [],
            'daily_sku' => $detail['daily_sku'] ?? [],
        ];

        $fileName = $settlement->warehouse_name . '仓储费用_' . $period . '.xlsx';

        return Excel::download(new ThirdPartyWarehouseStorageSettlementExport($result), $fileName);
    }

    public function exportSettlementDetails(string $period): ?BinaryFileResponse
    {
        $this->ensureAuthenticated();
        abort_unless(preg_match('/^\d{4}-(0[1-9]|1[0-2])$/', $period) === 1, 422);

        $settlement = $this->settlementForPeriod($period);
        if ($settlement === null) {
            $this->settlementError = '未找到 ' . $period . ' 的核算存档，请先核算。';

            return null;
        }

        $dailySku = ($settlement->detail_json ?: [])['daily_sku'] ?? [];
        if ($dailySku === []) {
            $this->showMissingSettlementDetails($period);

            return null;
        }

        $fileName = $settlement->warehouse_name . '每日商品仓储费明细_' . $period . '.xlsx';

        return Excel::download(new ThirdPartyWarehouseStorageDetailExport($dailySku), $fileName);
    }

    public function viewSettlementDetails(string $period): void
    {
        $this->ensureAuthenticated();
        abort_unless(preg_match('/^\d{4}-(0[1-9]|1[0-2])$/', $period) === 1, 422);

        $this->settlementDetailPeriod = $period;
        $this->settlementDetailDate = '';
        $this->settlementDetailDates = [];
        $this->settlementDetailMessage = null;

        $settlement = $this->settlementForPeriod($period);
        if ($settlement === null) {
            $this->settlementDetailMessage = '未找到 ' . $period . ' 的核算存档。';
            $this->dispatch('warehouse-settlement-details-opened');

            return;
        }

        $detail = $settlement->detail_json ?: [];
        $dailySku = $detail['daily_sku'] ?? [];
        if ($dailySku === []) {
            $this->showMissingSettlementDetails($period);

            return;
        }

        $dates = array_values(array_unique(array_column($dailySku, 'date')));
        sort($dates);
        $this->settlementDetailDates = $dates;
        $this->settlementDetailDate = $dates[0] ?? '';
        $this->dispatch('warehouse-settlement-details-opened');
    }

    public function closeSettlementDetails(): void
    {
        $this->settlementDetailPeriod = null;
        $this->settlementDetailDate = '';
        $this->settlementDetailDates = [];
        $this->settlementDetailMessage = null;
    }

    public function render(): View
    {
        $this->ensureAuthenticated();

        $history = ThirdPartyWarehouseStorageSettlement::query()
            ->where('company_id', (int) company_id())
            ->where('warehouse_id', self::WAREHOUSE_ID)
            ->orderByDesc('period')
            ->limit(24)
            ->get()
            ->map(fn (ThirdPartyWarehouseStorageSettlement $row): array => [
                'period' => $row->period,
                'total_fee' => (float) $row->total_fee,
                'inbound_fee' => (float) $row->inbound_fee,
                'outbound_fee' => (float) $row->outbound_fee,
                'storage_fee' => (float) $row->storage_fee,
                'calculated_at' => optional($row->updated_at)->format('Y-m-d H:i'),
            ])
            ->all();
        $settlementDetail = $this->settlementDetailData();

        return view('business.pages.courier-payables.partials.warehouse-freight', [
            'settlementHistory' => $history,
            'settlementDetailRows' => $settlementDetail['rows'],
            'settlementDetailSummary' => $settlementDetail['summary'],
        ]);
    }

    /** @return array<string,mixed> */
    private function summaryFromSettlement(ThirdPartyWarehouseStorageSettlement $s): array
    {
        return [
            'period' => $s->period,
            'warehouse_id' => (int) $s->warehouse_id,
            'warehouse_name' => $s->warehouse_name,
            'quote_id' => $s->quote_id,
            'days_in_month' => (int) $s->days_in_month,
            'inbound_rate_per_ton' => (float) $s->inbound_rate_per_ton,
            'outbound_rate_per_order' => (float) $s->outbound_rate_per_order,
            'pieces_per_pallet' => (float) $s->pieces_per_pallet,
            'pallet_area_sqm' => (float) $s->pallet_area_sqm,
            'storage_rate_per_sqm_month' => (float) $s->storage_rate_per_sqm_month,
            'inbound_tons' => (float) $s->inbound_tons,
            'inbound_fee' => (float) $s->inbound_fee,
            'outbound_qty' => (float) $s->outbound_qty,
            'outbound_fee' => (float) $s->outbound_fee,
            'storage_fee' => (float) $s->storage_fee,
            'memo_fee' => (float) $s->memo_fee,
            'loss_fee' => (float) $s->loss_fee,
            'compensation_fee' => (float) $s->compensation_fee,
            'total_fee' => (float) $s->total_fee,
        ];
    }

    /**
     * 明细行只参与当前服务端渲染，不进入 Livewire 公共快照，避免日期切换时回传整张表。
     *
     * @return array{rows:list<array<string,mixed>>,summary:array<string,float|int>|null}
     */
    private function settlementDetailData(): array
    {
        $empty = ['rows' => [], 'summary' => null];

        if ($this->settlementDetailPeriod === null
            || ! in_array($this->settlementDetailDate, $this->settlementDetailDates, true)) {
            return $empty;
        }

        $settlement = $this->settlementForPeriod($this->settlementDetailPeriod);
        if ($settlement === null) {
            return $empty;
        }

        $detail = $settlement->detail_json ?: [];
        $rows = array_values(array_filter(
            $detail['daily_sku'] ?? [],
            fn (array $row): bool => ($row['date'] ?? null) === $this->settlementDetailDate,
        ));
        usort($rows, static fn (array $left, array $right): int => strcmp(
            (string) ($left['sku_code'] ?? ''),
            (string) ($right['sku_code'] ?? ''),
        ));

        return [
            'rows' => $rows,
            'summary' => [
                'sku_count' => count($rows),
                'opening' => array_sum(array_column($rows, 'opening')),
                'net_movement' => array_sum(array_column($rows, 'net_movement')),
                'closing' => array_sum(array_column($rows, 'closing')),
                'storage_fee' => array_sum(array_column($rows, 'storage_fee')),
            ],
        ];
    }

    private function settlementForPeriod(string $period): ?ThirdPartyWarehouseStorageSettlement
    {
        return ThirdPartyWarehouseStorageSettlement::query()
            ->where('company_id', (int) company_id())
            ->where('warehouse_id', self::WAREHOUSE_ID)
            ->where('period', $period)
            ->first();
    }

    private function showMissingSettlementDetails(string $period): void
    {
        $this->settlementPeriod = $period;
        $this->settlementDetailPeriod = $period;
        $this->settlementDetailDate = '';
        $this->settlementDetailDates = [];
        $this->settlementDetailMessage = $period . ' 的原存档没有每日商品明细，请重新核算该月份后查看和导出。';
        $this->dispatch('warehouse-settlement-details-opened');
    }

    private function ensureAuthenticated(): void
    {
        abort_unless(auth()->check(), 401);

        $section = collect(SidebarPermissions::navigationFor(user()))->firstWhere('slug', 'courier-payables');
        abort_unless(collect($section['pages'] ?? [])->contains('slug', 'warehouse-freight'), 403, '当前账号没有该页面权限。');
    }
}