<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use App\Models\StudyTour;
use App\Support\SecurePrivateImportUpload;
use App\Support\StudyTourDeclarationExporter;
use App\Support\StudyTourDeclarationParser;
use App\Support\StudyTourPayload;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Symfony\Component\HttpFoundation\BinaryFileResponse;
use Symfony\Component\HttpFoundation\HeaderUtils;

class StudyTourController extends Controller
{
    public function index(Request $request): JsonResponse
    {
        $q = StudyTour::query()->orderBy('sort')->orderByDesc('id');
        StudyTourPayload::applyListFilters($q, $request);

        return response()->json($q->get());
    }

    public function store(Request $request): JsonResponse
    {
        $this->ensureSuperAdmin($request);
        $data = $request->validate(StudyTourPayload::validationRules(true));
        $data = StudyTourPayload::normalizeIncoming($data);

        $row = StudyTour::create($data + [
            'tags' => $data['tags'] ?? [],
            'venue_ids' => $data['venue_ids'] ?? [],
            'venue_items' => $data['venue_items'] ?? [],
            'seasons' => $data['seasons'] ?? [],
            'suitable_audience' => $data['suitable_audience'] ?? null,
            'route_plans' => $data['route_plans'] ?? [],
            'courses' => $data['courses'] ?? [],
            'gallery_media' => $data['gallery_media'] ?? [],
            'sort' => $data['sort'] ?? 0,
            'is_on_shelf' => $data['is_on_shelf'] ?? true,
        ]);

        return response()->json($row, 201);
    }

    public function update(Request $request, StudyTour $studyTour): JsonResponse
    {
        $this->ensureSuperAdmin($request);
        $data = $request->validate(StudyTourPayload::validationRules(false));
        $data = StudyTourPayload::normalizeIncoming($data);

        $studyTour->fill($data)->save();

        return response()->json($studyTour->fresh());
    }

    public function destroy(Request $request, StudyTour $studyTour): JsonResponse
    {
        $this->ensureSuperAdmin($request);
        $studyTour->delete();

        return response()->json(['message' => '删除成功']);
    }

    public function export(Request $request): BinaryFileResponse|JsonResponse
    {
        $this->ensureSuperAdmin($request);
        $data = $request->validate([
            'ids' => ['required', 'array', 'min:1', 'max:'.StudyTourDeclarationExporter::MAX_BATCH],
            'ids.*' => ['integer', 'min:1'],
        ]);
        $ids = array_values(array_unique(array_map('intval', $data['ids'])));
        $order = array_flip($ids);
        $tours = StudyTour::query()
            ->whereIn('id', $ids)
            ->get()
            ->sortBy(fn (StudyTour $row) => $order[$row->id] ?? 9999)
            ->values();

        if ($tours->isEmpty()) {
            return response()->json(['message' => '未找到可导出的线路'], 422);
        }

        try {
            $download = StudyTourDeclarationExporter::writeDownload($tours);
        } catch (\Throwable $e) {
            return response()->json(['message' => '导出失败：'.$e->getMessage()], 422);
        }

        $ascii = str_ends_with(strtolower($download['filename']), '.zip')
            ? 'study-tours.zip'
            : 'study-tour.docx';
        $response = response()->download(
            $download['path'],
            $ascii,
            ['Content-Type' => $download['mime']]
        )->deleteFileAfterSend(true);
        $response->headers->set(
            'Content-Disposition',
            HeaderUtils::makeDisposition(
                HeaderUtils::DISPOSITION_ATTACHMENT,
                $download['filename'],
                $ascii
            )
        );

        return $response;
    }

    public function parseDoc(Request $request): JsonResponse
    {
        $request->validate([
            'file' => ['required', 'file', 'max:10240'],
        ]);

        $uploaded = $request->file('file');
        if ($uploaded === null) {
            return response()->json(['message' => '请上传申报表文件'], 422);
        }

        $path = null;
        try {
            $path = SecurePrivateImportUpload::storeTemporary(
                $uploaded,
                'tmp/declaration-import',
                ['doc', 'docx'],
                10240
            );
            $extension = strtolower((string) pathinfo($path, PATHINFO_EXTENSION));
            $result = StudyTourDeclarationParser::parseFile($path, $extension);
        } catch (\Illuminate\Validation\ValidationException $e) {
            throw $e;
        } catch (\Throwable $e) {
            return response()->json(['message' => '申报表解析失败：'.$e->getMessage()], 422);
        } finally {
            if (is_string($path) && is_file($path)) {
                @unlink($path);
            }
        }

        return response()->json($result);
    }

    private function ensureSuperAdmin(Request $request): void
    {
        abort_unless($request->user()?->isSuperAdmin(), 403, '仅超级管理员可操作');
    }
}