<?php

namespace App\Http\Controllers\Web\Payment;

use App\Http\Controllers\Controller;
use App\Services\Payments\PaymentService;
use Illuminate\Http\Request;

final class DanalController extends Controller
{
    public function __construct(
        private readonly PaymentService $service,
    ) {}

    // 결제 시작(POST 권장)
    public function start(Request $request)
    {
        $data = $request->validate([
            'oid' => ['required','string','max:64'],
            'method' => ['required','in:card,vact,phone'],
            'card_kind' => ['nullable','in:general,exchange'],
            'phone_mode' => ['nullable','in:prod,dev'],
            'is_mobile' => ['nullable','boolean'],
        ]);

        $memNo = $this->currentMemNo($request);
        if ($memNo <= 0) abort(403);

        $out = $this->service->start(
            $data['oid'],
            $memNo,
            $data['method'],
            [
                'card_kind' => $data['card_kind'] ?? null,
                'phone_mode' => $data['phone_mode'] ?? null,
                'is_mobile' => (bool)($data['is_mobile'] ?? false),
            ]
        );

        if (($out['type'] ?? '') === 'redirect') {
            return view('web.payments.danal.redirect', [
                'actionUrl' => $out['start']['actionUrl'],
                'params' => $out['start']['params'],
                'acceptCharset' => $out['start']['acceptCharset'] ?? 'EUC-KR',
            ]);
        }

        return view('web.payments.danal.result', $out);
    }

    // 카드 RETURNURL
    public function cardReturn(Request $request)
    {
        $token = (string)$request->query('a', '');
        if ($token === '') abort(404);

        if (($out['ok'] ?? false) && ($out['status'] ?? '') === 'paid') {
            $attemptId = (int)($out['meta']['attempt_id'] ?? 0);
            $redirect = url("/mypage/usage?attempt_id={$attemptId}");

            return view('web.payments.danal.finish_top_action', [
                'action' => 'close_modal',
                'title' => '결제완료',
                'message' => '결제가 완료되었습니다. 구매페이지로 이동합니다.',
                'redirect' => url($redirect),
            ]);
        }

        return view('web.payments.danal.finish_top_action', [
            'action' => 'close_modal',
            'title' => '결제실패',
            'message' => '결제에 실패했습니다.',
        ]);
    }

    // 가상계좌 RETURNURL
    public function vactReturn(Request $request)
    {
        $token = (string)$request->query('a', '');
        if ($token === '') abort(404);

        $out = $this->service->handleVactReturn($token, $request->all());

        if (($out['ok'] ?? false) && ($out['status'] ?? '') === 'issued') {
            $attemptId = (int)($out['meta']['attempt_id'] ?? 0);
            $redirect = url("/mypage/usage?attempt_id={$attemptId}");

            return view('web.payments.danal.finish_top_action', [
                'action' => 'close_modal',
                'title' => '가상계좌 발급',
                'message' => '가상계좌가 발급되었습니다. 입금 후 결제가 완료됩니다. 구매페이지로 이동합니다.',
                'redirect' => url($redirect),
            ]);
        }

        return view('web.payments.danal.finish_top_action', [
            'action' => 'close_modal',
            'title' => '처리실패',
            'message' => '가상계좌 처리에 실패했습니다.',
        ]);
    }


    // 가상계좌 NOTIURL (반드시 OK)
    public function vactNoti(Request $request)
    {
        $this->service->handleVactNoti($request->all());
        return response('OK', 200)->header('Content-Type', 'text/plain');
    }

    // 휴대폰 TargetURL
    public function phoneReturn(Request $request)
    {
        $out = $this->service->handlePhoneReturn($request->all());

        if (($out['ok'] ?? false) && ($out['status'] ?? '') === 'paid') {
            $attemptId = (int)($out['meta']['attempt_id'] ?? 0);
            $redirect = url("/mypage/usage?attempt_id={$attemptId}");

            return view('web.payments.danal.finish_top_action', [
                'action' => 'close_modal',
                'title' => '결제완료',
                'message' => '결제가 완료되었습니다. 구매페이지로 이동합니다.',
                'redirect' => url($redirect),
            ]);
        }

        return view('web.payments.danal.finish_top_action', [
            'action' => 'close_modal',
            'title' => '결제실패',
            'message' => '결제에 실패했습니다.',
        ]);
    }

    // 휴대폰 BackURL(취소)
    public function phoneCancel(Request $request)
    {
        $out = $this->service->handlePhoneCancel($request->all());

        return view('web.payments.danal.finish_top_action', [
            'action' => 'close_modal',
            'message' => '결제가 취소되었습니다.',
            'title' => '결제취소',
        ]);
    }

    // 카드/가상계좌 CancelURL
    public function cancel(Request $request)
    {
        $token = (string)$request->query('a', '');
        if ($token === '') abort(404);

        $out = $this->service->handleCancel($token);

        // ✅ 취소면: iframe 닫고 showMsg 실행
        if (($out['meta']['code'] ?? '') === 'CANCEL') {
            return view('web.payments.danal.finish_top_action', [
                'action' => 'close_modal',
                'message' => '결제가 취소되었습니다.',
                'title' => '결제취소',
            ]);
        }

        return view('web.payments.danal.result', $out);
    }

    private function currentMemNo(Request $request): int
    {
        // 프로젝트에 맞게 연결해라:
        // 1) Auth::user()->mem_no 가 있으면 그걸 쓰고,
        // 2) local 테스트용은 request('mem_no') 허용
        $u = $request->user();
        if ($u && isset($u->mem_no)) return (int)$u->mem_no;

        if (app()->environment('local')) {
            return (int)$request->input('mem_no', 0);
        }

        return 0;
    }
}