<?php

namespace App\Http\Controllers\Business;

use App\Business\CourierSurchargeQuoteRepository;
use App\Business\CourierSurchargeQuoteWorkbookImporter;
use App\Models\Business\CourierSurchargeQuote;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Routing\Controller;
use Illuminate\Support\Str;
use Symfony\Component\HttpFoundation\StreamedResponse;

class CourierSurchargeQuotes extends Controller
{
    public function __construct(
        private readonly CourierSurchargeQuoteRepository $quotes,
        private readonly CourierSurchargeQuoteWorkbookImporter $workbookImporter,
    ) {
        $this->middleware('auth');
        $this->middleware('company.identify');
        $this->middleware('business.page:courier-payables,courier-surcharge');
    }

    public function store(Request $request): RedirectResponse
    {
        abort_unless($this->quotes->ready(), 503, '附加费报价数据表尚未完成迁移，请联系管理员。');

        $this->quotes->create($this->validated($request), (int) user_id());

        return $this->redirect()->with('success', '报价规则已新增并保存。');
    }

    public function update(Request $request, CourierSurchargeQuote $quote): RedirectResponse
    {
        $this->ensureCompany($quote);
        abort_unless($this->quotes->ready(), 503, '附加费报价数据表尚未完成迁移，请联系管理员。');

        $this->quotes->update($quote, $this->validated($request), (int) user_id());

        return $this->redirect()->with('success', '报价规则已更新并保存。');
    }

    public function setStatus(Request $request, CourierSurchargeQuote $quote): RedirectResponse
    {
        $this->ensureCompany($quote);
        abort_unless($this->quotes->ready(), 503, '附加费报价数据表尚未完成迁移，请联系管理员。');

        $status = $request->validate([
            'status' => ['required', 'in:' . CourierSurchargeQuote::STATUS_ACTIVE . ',' . CourierSurchargeQuote::STATUS_INACTIVE],
        ])['status'];
        $this->quotes->setStatus($quote, $status, (int) user_id());

        return $this->redirect()->with('success', '报价规则状态已更新。');
    }

    public function importTemplate(): StreamedResponse
    {
        abort_unless($this->quotes->ready(), 503, '附加费报价数据表尚未完成迁移，请联系管理员。');

        return $this->workbookImporter->template();
    }

    public function importPreview(Request $request): RedirectResponse
    {
        abort_unless($this->quotes->ready(), 503, '附加费报价数据表尚未完成迁移，请联系管理员。');

        $file = $request->validate([
            'import_file' => ['required', 'file', 'max:10240'],
        ])['import_file'];
        $preview = $this->workbookImporter->preview($file);
        $token = Str::random(48);
        $previews = collect((array) $request->session()->get('courier_surcharge_import_previews', []))
            ->filter(fn (mixed $item): bool => is_array($item) && (int) ($item['expires_at'] ?? 0) >= now()->timestamp)
            ->take(-2)
            ->all();
        $previews[$token] = [
            'company_id' => (int) company_id(),
            'user_id' => (int) user_id(),
            'expires_at' => now()->addMinutes(20)->timestamp,
            'rows' => $preview['rows'],
        ];
        $request->session()->put('courier_surcharge_import_previews', $previews);

        return $this->redirect()->with('courierSurchargeImportPreview', $preview + ['token' => $token]);
    }

    public function importCommit(Request $request): RedirectResponse
    {
        abort_unless($this->quotes->ready(), 503, '附加费报价数据表尚未完成迁移，请联系管理员。');

        $validated = $request->validate([
            'preview_token' => ['required', 'string', 'size:48'],
            'duplicate_policy' => ['required', 'in:' . CourierSurchargeQuoteWorkbookImporter::DUPLICATE_SKIP . ',' . CourierSurchargeQuoteWorkbookImporter::DUPLICATE_UPDATE],
        ]);
        $previews = (array) $request->session()->get('courier_surcharge_import_previews', []);
        $payload = $previews[$validated['preview_token']] ?? null;

        if (! is_array($payload)
            || (int) ($payload['company_id'] ?? 0) !== (int) company_id()
            || (int) ($payload['user_id'] ?? 0) !== (int) user_id()
            || (int) ($payload['expires_at'] ?? 0) < now()->timestamp) {
            unset($previews[$validated['preview_token']]);
            $request->session()->put('courier_surcharge_import_previews', $previews);

            return $this->redirect()->withErrors([
                'import' => '导入预览已失效或不属于当前账号，请重新选择文件预览。',
            ]);
        }

        $counts = $this->workbookImporter->commit(
            (array) ($payload['rows'] ?? []),
            $validated['duplicate_policy'],
            (int) user_id(),
        );
        unset($previews[$validated['preview_token']]);
        $request->session()->put('courier_surcharge_import_previews', $previews);

        return $this->redirect()->with(
            'success',
            sprintf(
                '附加费报价导入完成：新增 %d 条，更新 %d 条，跳过 %d 条。',
                $counts['created'],
                $counts['updated'],
                $counts['skipped'],
            ),
        );
    }

    /** @return array<string,mixed> */
    private function validated(Request $request): array
    {
        $data = $request->validate([
            'courier' => ['required', 'string', 'max:191'],
            'scope' => ['required', 'in:' . implode(',', CourierSurchargeQuoteRepository::SCOPES)],
            'reconciler' => ['required', 'string', 'max:100'],
            'supplier' => ['nullable', 'string', 'max:191'],
            'types' => ['required', 'array', 'min:1', 'max:50'],
            'types.*' => ['string', 'in:' . implode(',', $this->quotes->activeTypeNames())],
            'mode' => ['required', 'in:' . implode(',', CourierSurchargeQuoteRepository::MODES)],
            'standard' => ['required', 'string', 'max:2000'],
            'condition' => ['required', 'string', 'max:2000'],
            'effective_at' => ['required', 'date_format:Y-m-d'],
            'remark' => ['nullable', 'string', 'max:2000'],
        ]);

        $data['courier'] = trim($data['courier']);
        $data['reconciler'] = trim($data['reconciler']);
        $data['supplier'] = trim((string) ($data['supplier'] ?? '')) ?: null;
        $data['types'] = array_values(array_unique($data['types']));

        return $data;
    }

    private function ensureCompany(CourierSurchargeQuote $quote): void
    {
        abort_unless((int) $quote->company_id === (int) company_id(), 404, '报价规则不存在。');
    }

    private function redirect(): RedirectResponse
    {
        return redirect()->route('business.pages.show', [
            'company_id' => company_id() ?: 1,
            'section' => 'courier-payables',
            'page' => 'courier-surcharge',
        ]);
    }
}