<?php

namespace Longyi\Member\Http\Controllers\Admin;

use Illuminate\Http\JsonResponse;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;
use Longyi\Member\DataGrids\Member\MemberDataGrid;
use Longyi\Member\Imports\MemberPlusSpreadsheet;
use Longyi\Member\Services\MemberPlusImportException;
use Longyi\Member\Services\MemberPlusImportService;
use Longyi\Member\Services\MemberPlusStatisticsService;
use Maatwebsite\Excel\Facades\Excel;
use Webkul\Admin\Http\Controllers\Controller;

class MemberController extends Controller
{
    /**
     * Create a new controller instance.
     */
    public function __construct(
        protected MemberPlusImportService $importService,
        protected MemberPlusStatisticsService $statisticsService
    ) {}

    /**
     * Display a listing of the resource.
     */
    public function index(): View|JsonResponse
    {
        if (request()->ajax()) {
            return datagrid(MemberDataGrid::class)->process();
        }

        return view('member::admin.index');
    }

    /**
     * Plus 会员统计：新增 / 过期。
     */
    public function statistics(Request $request): JsonResponse
    {
        $request->validate([
            'start' => ['nullable', 'date'],
            'end'   => ['nullable', 'date'],
        ]);

        $end = $request->date('end') ?? now();

        $start = $request->date('start') ?? $end->copy()->subDays(29);

        return new JsonResponse($this->statisticsService->get($start, $end));
    }

    /**
     * 批量导入 Plus 会员（邮箱 + 过期天数）。
     */
    public function import(Request $request): RedirectResponse
    {
        $request->validate([
            'import_file' => [
                'required',
                'file',
                'extensions:xlsx,xls,csv',
                'mimetypes:text/csv,text/plain,application/csv,application/vnd.ms-excel,application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
                'max:10240',
            ],
        ]);

        try {
            $sheets = Excel::toArray(new MemberPlusSpreadsheet, $request->file('import_file'));

            $result = $this->importService->import($sheets[0] ?? []);
        } catch (MemberPlusImportException $e) {
            return $this->redirectToIndex('error', $e->getMessage());
        } catch (\Throwable $e) {
            return $this->redirectToIndex('error', trans('member::app.member.import.errors.generic', [
                'message' => $this->sanitizeMessage($e->getMessage()),
            ]));
        }

        return redirect()
            ->route('admin.member.index')
            ->with('member_import_result', $result)
            ->with(
                $result['failed'] > 0 ? 'warning' : 'success',
                trans('member::app.member.import.summary', [
                    'updated' => $result['updated'],
                    'failed'  => $result['failed'],
                    'skipped' => $result['skipped'],
                ])
            );
    }

    /**
     * 返回列表页并带上提示信息。
     */
    protected function redirectToIndex(string $type, string $message): RedirectResponse
    {
        return redirect()
            ->route('admin.member.index')
            ->with($type, $this->sanitizeMessage($message));
    }

    /**
     * 去掉会破坏前端提示脚本的引号与换行。
     */
    protected function sanitizeMessage(string $message): string
    {
        return trim(str_replace(['"', "\r", "\n"], ["'", ' ', ' '], $message));
    }
}