<?php

namespace App\Http\Controllers\Business;

use App\Models\Banking\MarketingAccountBill;
use App\Models\StoreReceivables\StoreZhongcaiReconciliation;
use App\Utilities\SidebarPermissions;
use Illuminate\Routing\Controller;
use Illuminate\Pagination\LengthAwarePaginator;
use Illuminate\Support\Collection;
use Modules\EcommerceFinance\Repositories\EdgeBandingRepository;
use Modules\EcommerceFinance\Repositories\InventoryRepository;
use Modules\EcommerceFinance\Repositories\PinduoduoSpreadBillRepository;
use Modules\EcommerceFinance\Repositories\RawBoardPayablesRepository;
use Modules\EcommerceFinance\Repositories\TmallTaobaoSpreadBillRepository;
use Modules\EcommerceFinance\Services\UpstreamQueryCacheFactory;
use Symfony\Component\HttpKernel\Exception\ServiceUnavailableHttpException;
use Throwable;

class Pages extends Controller
{
    private const EDGE_BANDING_SOURCE = 'jiansun';

    private const INVENTORY_SOURCE = 'jiansun';

    private const RAW_BOARD_SOURCE = 'jiansun';

    public function __construct(
        private readonly EdgeBandingRepository $edgeBanding,
        private readonly InventoryRepository $inventory,
        private readonly RawBoardPayablesRepository $rawBoardPayables,
        private readonly UpstreamQueryCacheFactory $upstreamCaches,
    ) {
    }

    /**
     * 支持的营销账户平台列表
     */
    protected const MARKETING_PLATFORMS = [
        'taobao-alipay', 'taobao-wechat', 'pinduoduo',
        'jd-wallet', 'douyin', 'dewu', 'vipshop',
    ];
    public function home()
    {
        $section = collect(SidebarPermissions::navigationFor(user()))->first();

        abort_if(empty($section), 403, '当前账号没有已授权的侧边栏功能。');

        $page = collect($section['pages'] ?? [])->first();
        $parameters = ['section' => $section['slug']];

        if ($page) {
            $parameters['page'] = $page['slug'];

            if (! empty($page['tabs'])) {
                $parameters['tab'] = $page['tabs'][0]['slug'];
            }
        }

        return redirect()->route('business.pages.show', $parameters);
    }

    public function show(string $section, ?string $page = null, ?string $tab = null)
    {
        $sectionConfig = collect(SidebarPermissions::navigationFor(user()))->firstWhere('slug', $section);

        abort_if(empty($sectionConfig), 403, '当前账号没有该页面权限。');

        $pages = collect($sectionConfig['pages'] ?? []);

        if ($pages->isEmpty()) {
            abort_if($page !== null || $tab !== null, 404);

            return view('business.pages.show', [
                'section' => $sectionConfig,
                'page' => null,
                'tabs' => collect(),
                'activeTab' => null,
            ]);
        }

        if ($page === null) {
            return $this->redirectToPage($sectionConfig, $pages->first());
        }

        $pageConfig = $pages
            ->flatMap(fn (array $configuredPage) => [
                $configuredPage,
                ...($configuredPage['children'] ?? []),
            ])
            ->firstWhere('slug', $page);

        abort_if(empty($pageConfig), 404);

        // 如果该 page 是一个 children-only 的父级分组，访问它时跳到第一个子页面
        if (! empty($pageConfig['children']) && empty($pageConfig['tabs'])) {
            return $this->redirectToPage($sectionConfig, $pageConfig['children'][0]);
        }

        $tabs = collect($pageConfig['tabs'] ?? []);

        if ($tabs->isEmpty()) {
            abort_if($tab !== null, 404);

            $content = $this->resolveContent($page, null);

            return view('business.pages.show', [
                'section' => $sectionConfig,
                'page' => $pageConfig,
                'tabs' => $tabs,
                'activeTab' => null,
                'content' => $content,
                'edgeBanding' => $this->edgeBandingContent($page),
                'inventoryData' => $this->inventoryContent($page),
                'rawBoardData' => $this->rawBoardContent($page),
            ]);
        }

        if ($tab === null) {
            return $this->redirectToPage($sectionConfig, $pageConfig);
        }

        $activeTab = $tabs->firstWhere('slug', $tab);

        abort_if(empty($activeTab), 404);

        $content = $this->resolveContent($page, $tab);

        return view('business.pages.show', [
            'section' => $sectionConfig,
            'page' => $pageConfig,
            'tabs' => $tabs,
            'activeTab' => $activeTab,
            'content' => $content,
            'edgeBanding' => $this->edgeBandingContent($page),
            'inventoryData' => $this->inventoryContent($page),
            'rawBoardData' => $this->rawBoardContent($page),
        ]);
    }

    /**
     * 根据页面和标签加载对应的业务内容数据
     */
    protected function resolveContent(string $page, ?string $tab): ?array
    {
        return match ($page) {
            'marketing-account-bills' => $this->contentForMarketingAccountBills($tab),
            'zhongcai-reconciliation' => $this->contentForZhongcaiReconciliation(),
            default => null,
        };
    }

    /**
     * 封边条页面只读取上游快照；未启用或无快照时将错误交给页面显示，
     * 避免工作台因上游暂不可用直接返回 500。
     */
    protected function edgeBandingContent(string $page): ?array
    {
        $scope = match ($page) {
            'edge-banding-prices' => 'edge-banding.prices',
            'details' => 'edge-banding.details',
            'edge-banding-payables' => 'edge-banding.payables',
            default => null,
        };

        if ($scope === null) {
            return null;
        }

        $filters = match ($page) {
            'edge-banding-prices' => $this->edgeBandingFilters([
                'raw_name', 'raw_code', 'production_code', 'supplier',
            ]),
            'details' => $this->edgeBandingFilters([
                'date', 'production_code', 'raw_name', 'return_flag',
                'outbound_supplier', 'arrival_supplier', 'outbound_no',
            ]),
            'edge-banding-payables' => $this->edgeBandingFilters(['period', 'supplier']),
            default => [],
        };

        if ($page === 'edge-banding-payables' && ! isset($filters['period'])) {
            $filters['period'] = '2026-06';
        }

        $pageNumber = max((int) request('data_page', 1), 1);
        $limit = min(max((int) request('data_limit', 25), 1), 100);
        $cache = $this->upstreamCaches->forSource(self::EDGE_BANDING_SOURCE);

        try {
            $result = $cache->remember(
                $scope,
                ['filters' => $filters, 'page' => $pageNumber, 'limit' => $limit],
                fn () => match ($scope) {
                    'edge-banding.prices' => $this->edgeBanding->prices($filters, $pageNumber, $limit),
                    'edge-banding.details' => $this->edgeBanding->details($filters, $pageNumber, $limit),
                    'edge-banding.payables' => $this->edgeBanding->payables($filters, $pageNumber, $limit),
                },
            );

            return [
                'filters' => $filters,
                'result' => $result,
                'page' => $pageNumber,
                'limit' => $limit,
                'last_page' => max((int) ceil(max((int) ($result['total'] ?? 0), 0) / $limit), 1),
                'status' => $cache->responseHeaders(),
                'error' => null,
            ];
        } catch (ServiceUnavailableHttpException $exception) {
            return [
                'filters' => $filters,
                'result' => ['data' => [], 'total' => 0],
                'page' => $pageNumber,
                'limit' => $limit,
                'last_page' => 1,
                'status' => [],
                'error' => $exception->getMessage(),
            ];
        } catch (Throwable $exception) {
            report($exception);

            return [
                'filters' => $filters,
                'result' => ['data' => [], 'total' => 0],
                'page' => $pageNumber,
                'limit' => $limit,
                'last_page' => 1,
                'status' => [],
                'error' => '封边条数据暂时无法读取，请稍后重试。',
            ];
        }
    }

    private function edgeBandingFilters(array $fields): array
    {
        $filters = [];

        foreach ($fields as $field) {
            $value = trim((string) request($field, ''));

            if ($value !== '') {
                $filters[$field] = $value;
            }
        }

        return $filters;
    }

    /**
     * 素板价格与对账页面使用 JianSun 只读查询，并保留共享快照链路。
     */
    protected function rawBoardContent(string $page): ?array
    {
        $scope = match ($page) {
            'board-prices' => 'raw-board.prices',
            'board-reconciliation' => 'raw-board.reconciliations',
            default => null,
        };

        if ($scope === null) {
            return null;
        }

        $filters = $scope === 'raw-board.prices'
            ? $this->rawBoardFilters(['raw_name', 'raw_code', 'production_code', 'supplier'])
            : $this->rawBoardReconciliationFilters();
        $pageNumber = max((int) request('data_page', 1), 1);
        $limit = min(max((int) request('data_limit', 25), 1), 100);

        try {
            $cache = $this->upstreamCaches->forSource(self::RAW_BOARD_SOURCE);
            $result = $cache->remember(
                $scope,
                ['filters' => $filters, 'page' => $pageNumber, 'limit' => $limit],
                fn () => $scope === 'raw-board.prices'
                    ? $this->rawBoardPayables->prices($filters, $pageNumber, $limit)
                    : $this->rawBoardPayables->reconciliations($filters, $pageNumber, $limit),
            );

            return [
                'filters' => $filters,
                'result' => $result,
                'page' => $pageNumber,
                'limit' => $limit,
                'last_page' => max((int) ceil(max((int) ($result['total'] ?? 0), 0) / $limit), 1),
                'status' => $cache->responseHeaders(),
                'error' => null,
            ];
        } catch (ServiceUnavailableHttpException $exception) {
            return $this->emptyRawBoardContent($filters, $pageNumber, $limit, $exception->getMessage());
        } catch (Throwable $exception) {
            report($exception);

            return $this->emptyRawBoardContent(
                $filters,
                $pageNumber,
                $limit,
                '素板应付数据暂时无法读取，请稍后重试。',
            );
        }
    }

    private function rawBoardFilters(array $fields): array
    {
        $filters = [];

        foreach ($fields as $field) {
            $value = mb_substr(trim((string) request($field, '')), 0, 100);

            if ($value !== '') {
                $filters[$field] = $value;
            }
        }

        return $filters;
    }

    private function rawBoardReconciliationFilters(): array
    {
        $filters = $this->rawBoardFilters([
            'production_code', 'raw_name', 'outbound_supplier',
            'arrival_supplier', 'outbound_no',
        ]);

        foreach (['date_from', 'date_to'] as $field) {
            $value = $this->dateFilter(request($field));

            if ($value !== '') {
                $filters[$field] = $value;
            }
        }

        $returnFlag = trim((string) request('return_flag', ''));

        if (in_array($returnFlag, ['normal', 'return'], true)) {
            $filters['return_flag'] = $returnFlag;
        }

        return $filters;
    }

    private function emptyRawBoardContent(array $filters, int $page, int $limit, string $error): array
    {
        return [
            'filters' => $filters,
            'result' => ['data' => [], 'total' => 0, 'totals' => []],
            'page' => $page,
            'limit' => $limit,
            'last_page' => 1,
            'status' => [],
            'error' => $error,
        ];
    }

    /**
     * 板材库存页面使用 JianSun 最新素板快照，并保留生产共享快照链路。
     */
    protected function inventoryContent(string $page): ?array
    {
        if ($page !== 'board-inventory-details') {
            return null;
        }

        $filters = $this->inventoryFilters();
        $pageNumber = max((int) request('data_page', 1), 1);
        $limit = min(max((int) request('data_limit', 25), 1), 100);

        try {
            $cache = $this->upstreamCaches->forSource(self::INVENTORY_SOURCE);
            $result = $cache->remember(
                'inventory.board-details',
                ['filters' => $filters, 'page' => $pageNumber, 'limit' => $limit],
                fn () => $this->inventory->boardInventoryDetails($filters, $pageNumber, $limit),
            );

            return [
                'filters' => $filters,
                'result' => $result,
                'page' => $pageNumber,
                'limit' => $limit,
                'last_page' => max((int) ceil(max((int) ($result['total'] ?? 0), 0) / $limit), 1),
                'status' => $cache->responseHeaders(),
                'error' => null,
            ];
        } catch (ServiceUnavailableHttpException $exception) {
            return $this->emptyInventoryContent($filters, $pageNumber, $limit, $exception->getMessage());
        } catch (Throwable $exception) {
            report($exception);

            return $this->emptyInventoryContent(
                $filters,
                $pageNumber,
                $limit,
                '板材库存数据暂时无法读取，请稍后重试。',
            );
        }
    }

    private function inventoryFilters(): array
    {
        $filters = [];

        foreach (['manufacturer', 'specification', 'matching_value'] as $field) {
            $value = mb_substr(trim((string) request($field, '')), 0, 100);

            if ($value !== '') {
                $filters[$field] = $value;
            }
        }

        foreach (['date_from', 'date_to'] as $field) {
            $value = $this->dateFilter(request($field));

            if ($value !== '') {
                $filters[$field] = $value;
            }
        }

        return $filters;
    }

    private function emptyInventoryContent(array $filters, int $page, int $limit, string $error): array
    {
        return [
            'filters' => $filters,
            'result' => ['data' => [], 'total' => 0, 'totals' => []],
            'page' => $page,
            'limit' => $limit,
            'last_page' => 1,
            'status' => [],
            'error' => $error,
        ];
    }

    /**
     * 种菜应收对账 - 加载对账数据（21字段）
     */
    protected function contentForZhongcaiReconciliation(): ?array
    {
        return [
            'view' => 'store_receivables.zhongcai_reconciliations.partials.embedded-table',
            'records' => StoreZhongcaiReconciliation::orderBy('bill_date', 'desc')
                ->orderBy('id', 'desc')
                ->paginate(setting('default.list_limit', 25)),
        ];
    }

    /**
     * 营销账户账单 - 加载指定平台的数据
     * 淘系支付宝、拼多多使用独立的流水账单表，其他平台使用通用汇总账单表
     */
    protected function contentForMarketingAccountBills(string $tab): ?array
    {
        if (!in_array($tab, self::MARKETING_PLATFORMS, true)) {
            return null;
        }

        // 淘系支付宝 - 从上游 JianSun.tmall_spread_bills 读取并按表1字段展示（9列）
        if ($tab === 'taobao-alipay') {
            $request = request();
            $storeName = mb_substr(trim((string) $request->query('store_name')), 0, 191);
            $fromDate = $this->dateFilter($request->query('from'));
            $toDate = $this->dateFilter($request->query('to'));
            $flowType = trim((string) $request->query('flow_type'));
            $flowType = in_array($flowType, ['income', 'expense'], true) ? $flowType : '';
            $page = max(1, (int) $request->query('page', 1));
            $pageSize = min(max((int) setting('default.list_limit', 25), 1), 100);

            $repository = app(TmallTaobaoSpreadBillRepository::class);
            $cache = $this->upstreamCaches->forSource('jiansun');
            $filters = [
                'store_name' => $storeName !== '' ? $storeName : null,
                'from' => $fromDate !== '' ? $fromDate : null,
                'to' => $toDate !== '' ? $toDate : null,
                'flow_type' => $flowType !== '' ? $flowType : null,
            ];

            $result = $cache->remember(
                'taobao-alipay-bills.list',
                ['filters' => $filters, 'page' => $page, 'limit' => $pageSize],
                fn () => $repository->paginate(
                    $filters['store_name'],
                    $filters['from'],
                    $filters['to'],
                    $filters['flow_type'],
                    $page,
                    $pageSize
                )
            );
            $summary = $cache->remember(
                'taobao-alipay-bills.summary',
                ['filters' => $filters],
                fn () => $repository->summary(
                    $filters['store_name'],
                    $filters['from'],
                    $filters['to'],
                    $filters['flow_type']
                )
            );
            $storeOptions = $cache->remember(
                'taobao-alipay-bills.options',
                [],
                fn () => $repository->storeOptions()
            );

            $bills = new LengthAwarePaginator(
                Collection::make($result['rows']),
                $result['total'],
                $pageSize,
                $page,
                [
                    'path' => $request->url(),
                    'query' => $request->query(),
                ]
            );

            return [
                'view' => 'banking.marketing_taobao_alipay_bills.partials.embedded-table',
                'bills' => $bills,
                'filters' => [
                    'store_name' => $storeName,
                    'from' => $fromDate,
                    'to' => $toDate,
                    'flow_type' => $flowType,
                    'store_options' => $storeOptions,
                ],
                'summary' => $summary,
            ];
        }

        // 拼多多 - 从上游 JianSun.pdd_spread_bills 读取并按表1字段展示（7列）
        // 表1列：店铺名称 | 金额 | 余额 | 摘要 | 收支类型 | 资金类型 | 费用时间
        if ($tab === 'pinduoduo') {
            $request = request();
            $storeName = mb_substr(trim((string) $request->query('store_name')), 0, 191);
            $fromDate = $this->dateFilter($request->query('from'));
            $toDate = $this->dateFilter($request->query('to'));
            $flowType = trim((string) $request->query('flow_type'));
            $flowType = in_array($flowType, ['income', 'expense'], true) ? $flowType : '';
            $page = max(1, (int) $request->query('page', 1));
            $pageSize = min(max((int) setting('default.list_limit', 25), 1), 100);

            $repository = app(PinduoduoSpreadBillRepository::class);
            $cache = $this->upstreamCaches->forSource('jiansun');
            $filters = [
                'store_name' => $storeName !== '' ? $storeName : null,
                'from' => $fromDate !== '' ? $fromDate : null,
                'to' => $toDate !== '' ? $toDate : null,
                'flow_type' => $flowType !== '' ? $flowType : null,
            ];

            // 页面只读取共享查询快照；冷查询由统一限流和熔断链路访问上游。
            $result = $cache->remember(
                'pinduoduo-bills.list',
                ['filters' => $filters, 'page' => $page, 'limit' => $pageSize],
                fn () => $repository->paginate(
                    $filters['store_name'],
                    $filters['from'],
                    $filters['to'],
                    $filters['flow_type'],
                    $page,
                    $pageSize
                )
            );
            $summary = $cache->remember(
                'pinduoduo-bills.summary',
                ['filters' => $filters],
                fn () => $repository->summary(
                    $filters['store_name'],
                    $filters['from'],
                    $filters['to'],
                    $filters['flow_type']
                )
            );

            $storeOptions = $cache->remember(
                'pinduoduo-bills.options',
                [],
                fn () => $repository->storeOptions()
            );

            // 包装成 Laravel 分页器，便于 Blade 用 $bills->links()
            $bills = new LengthAwarePaginator(
                Collection::make($result['rows']),
                $result['total'],
                $pageSize,
                $page,
                [
                    'path' => $request->url(),
                    'query' => $request->query(),
                ]
            );

            return [
                'view' => 'banking.marketing_pinduoduo_bills.partials.embedded-table',
                'bills' => $bills,
                'filters' => [
                    'store_name' => $storeName,
                    'from' => $fromDate,
                    'to' => $toDate,
                    'flow_type' => $flowType,
                    'store_options' => $storeOptions,
                ],
                'summary' => $summary,
            ];
        }

        // 其他平台 - 使用通用汇总账单表（15字段）
        return [
            'view' => 'banking.marketing_account_bills.partials.embedded-table',
            'platform' => $tab,
            'accounts' => MarketingAccountBill::platform($tab)
                ->orderBy('bill_date', 'desc')
                ->orderBy('id', 'desc')
                ->paginate(setting('default.list_limit', 25)),
        ];
    }

    protected function redirectToPage(array $section, array $page)
    {
        $parameters = [
            'section' => $section['slug'],
            'page' => $page['slug'],
        ];

        if (! empty($page['tabs'])) {
            $parameters['tab'] = $page['tabs'][0]['slug'];
        }

        return redirect()->route('business.pages.show', $parameters);
    }

    private function dateFilter(mixed $value): string
    {
        $date = trim((string) $value);

        if (preg_match('/^\d{4}-\d{2}-\d{2}$/', $date) !== 1) {
            return '';
        }

        [$year, $month, $day] = array_map('intval', explode('-', $date));

        return checkdate($month, $day, $year) ? $date : '';
    }
}