<?php

namespace Modules\EcommerceFinance\Http\Controllers;

use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Routing\Controller;
use Modules\EcommerceFinance\Repositories\DingProcessDetailMirrorRepository;
use Modules\EcommerceFinance\Services\DingProcessDetailMirrorImporter;
use Modules\EcommerceFinance\Services\DingProcessRefreshQueue;
use Modules\EcommerceFinance\View\ProcessDetailsPageData;
use Symfony\Component\HttpFoundation\StreamedResponse;

class ProcessDetails extends Controller
{
    public function __construct(
        private readonly DingProcessDetailMirrorRepository $repository,
        private readonly DingProcessRefreshQueue $refreshQueue,
    ) {}

    public function show(Request $request)
    {
        if ($request->boolean('refresh_current')) {
            return $this->requestRefresh($request);
        }
        if ($request->filled('refresh_status')) {
            return $this->refreshStatus((string) $request->query('refresh_status'));
        }

        $pageData = app(ProcessDetailsPageData::class)->page($request);

        return view('business.pages.financial-operations.process-details', [
            ...$pageData,
            'section' => ['slug' => 'process-data', 'title' => '流程数据'],
            'page' => ['slug' => 'oa-process', 'title' => 'OA流程'],
            'pageUrl' => url('/' . company_id() . '/workspace/process-data/oa-process'),
        ]);
    }

    public function approvalSummary(Request $request)
    {
        $pageData = app(ProcessDetailsPageData::class)->approvalSummaryPage($request);
        $backFilters = array_filter(
            $pageData['filters'],
            static fn (mixed $value): bool => $value !== '' && $value !== null,
        );
        $backUrl = url('/' . company_id() . '/workspace/process-data/oa-process')
            . ($backFilters === [] ? '' : '?' . http_build_query($backFilters));

        return view('business.pages.financial-operations.process-details', [
            ...$pageData,
            'section' => ['slug' => 'process-data', 'title' => '流程数据'],
            'page' => ['slug' => 'oa-process', 'title' => 'OA流程'],
            'pageUrl' => url('/' . company_id() . '/workspace/process-data/oa-process/approval-summary'),
            'backUrl' => $backUrl,
        ]);
    }

    public function export(Request $request): StreamedResponse
    {
        $filters = ProcessDetailsPageData::normalizeFilters($request);

        return response()->streamDownload(function () use ($filters): void {
            $stream = fopen('php://output', 'wb');
            fwrite($stream, "\xEF\xBB\xBF");
            $headers = DingProcessDetailMirrorImporter::HEADERS;
            array_splice($headers, 2, 0, ['发起人部门']);
            fputcsv($stream, [...$headers, '付款状态', '付款差额']);

            $number = 0;
            foreach ($this->repository->exportRows($filters) as $row) {
                $number++;
                fputcsv($stream, [
                    $number,
                    (string) ($row['business_id'] ?? ''),
                    (string) ($row['originator_department'] ?? ''),
                    (string) ($row['originator_name'] ?? ''),
                    (string) ($row['status'] ?? ''),
                    (string) ($row['document_type'] ?? ''),
                    (string) ($row['purpose'] ?? ''),
                    (int) ($row['line_no'] ?? 0),
                    (string) ($row['account_code'] ?? ''),
                    (string) ($row['account_name'] ?? ''),
                    $row['amount'] ?? '',
                    (string) ($row['bank_account_code'] ?? ''),
                    (string) ($row['bank_account_name'] ?? ''),
                    $row['bank_amount'] ?? '',
                    (string) ($row['payment_method'] ?? ''),
                    (string) ($row['paid_at'] ?? ''),
                    (string) ($row['payment_state'] ?? ''),
                    isset($row['payment_difference'])
                        ? number_format((float) $row['payment_difference'], 2, '.', '')
                        : '',
                ]);
            }

            fclose($stream);
        }, 'OA流程_' . now()->format('Ymd_His') . '.csv', [
            'Content-Type' => 'text/csv; charset=UTF-8',
        ]);
    }

    public function requestRefresh(Request $request): JsonResponse
    {
        $businessIds = $request->input('business_ids', $request->query('business_ids', []));
        if (is_string($businessIds)) {
            $businessIds = array_values(array_filter(array_map('trim', explode(',', $businessIds))));
        }
        $request->merge(['business_ids' => $businessIds]);
        $validated = $request->validate([
            'business_ids' => ['required', 'array', 'min:1', 'max:50'],
            'business_ids.*' => ['required', 'string', 'max:32', 'regex:/^[A-Za-z0-9_-]+$/'],
        ]);
        $activeBusinessIds = $this->repository->activeBusinessIds($validated['business_ids']);
        $requestState = $this->refreshQueue->enqueue(
            $activeBusinessIds,
            (int) company_id(),
            (int) user_id(),
        );

        return response()
            ->json([
                'success' => true,
                ...$requestState,
                'message' => $requestState['queued']
                    ? '当前页进行中的流程已进入刷新队列。'
                    : '当前页没有审批中的流程需要刷新。',
            ])
            ->header('Cache-Control', 'no-store');
    }

    public function refreshStatus(string $token): JsonResponse
    {
        $status = $this->refreshQueue->status(
            $token,
            (int) company_id(),
            (int) user_id(),
        );
        abort_if($status === null, 404);

        return response()
            ->json(['success' => true, 'refresh' => $status])
            ->header('Cache-Control', 'no-store');
    }

}