<?php

namespace Longyi\Gift\Http\Controllers\Admin;

use Illuminate\Http\JsonResponse;
use Illuminate\View\View;
use Longyi\Gift\Models\GiftCards;
use Longyi\Gift\Models\GiftCardUsageLog;
use Webkul\Admin\Http\Controllers\Controller;
use Longyi\Gift\DataGrids\GiftCards\GiftCardsDataGrid;
use Longyi\Gift\Repositories\GiftCardsRepository;
use Illuminate\Support\Str;
use Webkul\Customer\Models\Customer;


class GiftController extends Controller
{

    /**
     * Create a new controller instance.
     *
     * @return void
     */
    public function __construct(
        protected GiftCardsRepository $giftCardsRepository
    ) {
    }
    /**
     * Display a listing of the resource.
     */
    public function index(): View|JsonResponse
    {
        if (request()->ajax()) {
             return datagrid(GiftCardsDataGrid::class)->process();
        }

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

    /**
     * Show the form for creating a new resource.
     */
    public function create(): View
    {
        return view('gift::admin.create');
    }

    /**
     * Store a newly created resource in storage.
     */
    public function store(): JsonResponse|\Illuminate\Http\RedirectResponse
    {
        $data = request()->validate([
            'giftcard_amount' => 'required|numeric|min:0',
            'customer_id' => 'required|integer',
            'expirationdate' => 'required|date_format:Y-m-d',
            'giftcard_status' => 'required|in:1,2',
        ]);

        $data['giftcard_number'] = $this->generateUniqueGiftCardNumber();
        $data['used_giftcard_amount'] = 0;
        $data['type'] = 1;
        $data['remaining_giftcard_amount'] = $data['giftcard_amount'] ?? 0;

        $this->giftCardsRepository->create($data);
        // 记录使用日志
        GiftCardUsageLog::create([
            'giftcard_number' => $data['giftcard_number'],
            'customer_id' => $data['customer_id'],
            'used_amount' => 0,
            'balance_before' => $data['giftcard_amount'],
            'balance_after' => $data['giftcard_amount'],
            'action_type' => GiftCardUsageLog::ACTION_ADD,
            'status' => 'completed',
            'notes' => "Administrator addition",
        ]);
        if (request()->expectsJson()) {
            return new JsonResponse([
                'message' => '礼品卡创建成功',
            ]);
        }
        return redirect()->route('admin.gift.index');
    }

    /**
     * Validate customer email via AJAX and return customer_id
     */
    public function validateEmail(): JsonResponse
    {
        $email = request()->input('email');

        if (empty($email)) {
            return new JsonResponse([
                'valid' => true,
                'customer_id' => null,
                'message' => '',
            ]);
        }

        $customer = Customer::where('email', $email)->first();

        if (!$customer) {
            return new JsonResponse([
                'valid' => false,
                'customer_id' => null,
                'message' => '该邮箱对应的用户不存在',
            ], 422);
        }

        return new JsonResponse([
            'valid' => true,
            'customer_id' => $customer->id,
            'message' => '邮箱验证通过',
            'customer_name' => $customer->first_name . ' ' . $customer->last_name,
        ]);
    }
    /**
     * Generate a unique 16-digit gift card number
     *
     * @return string
     */
    private function generateUniqueGiftCardNumber()
    {
        do {
            // Generate a random string of characters
            $randomString = Str::upper(Str::random(16));

            // Format the string into groups of four separated by dashes
            $code = implode('-', str_split($randomString, 4));

            // Check if the code already exists in the database
            $exists = GiftCards::where('giftcard_number', $code)->exists();
        } while ($exists);

        return $code;
    }
    /**
     * Remove the specified resource from storage.
     */
    public function destroy(int $id): JsonResponse
    {
        try {
            $this->giftCardsRepository->delete($id);

            return new JsonResponse([
                'message' => '礼品卡删除成功',
            ]);
        } catch (\Exception $e) {
            return new JsonResponse([
                'message' => '礼品卡删除失败',
            ], 400);
        }
    }

    /**
     * Mass delete resources.
     */
    public function massDelete(): JsonResponse
    {
        $indices = request()->input('indices');

        if (empty($indices)) {
            return new JsonResponse([
                'message' => '请选择要删除的礼品卡',
            ], 422);
        }

        try {
            foreach ($indices as $id) {
                $this->giftCardsRepository->delete($id);
            }

            return new JsonResponse([
                'message' => '选中的礼品卡删除成功',
            ]);
        } catch (\Exception $e) {
            return new JsonResponse([
                'message' => '批量删除失败',
            ], 400);
        }
    }
}