<?php

namespace Longyi\RewardPoints\Http\Controllers;

use Longyi\RewardPoints\Repositories\RewardPointRepository;
use Longyi\RewardPoints\Models\RewardPointCustomerSign;
use Longyi\RewardPoints\Models\RewardActiveRule;
use Carbon\Carbon;
use Illuminate\Http\Request;
use Illuminate\Routing\Controller;
use Webkul\User\Repositories\RoleRepository;
use Illuminate\Support\Facades\DB;
class RewardPointsController extends Controller
{
    protected $rewardPointRepository;
    protected $_config;

    public function __construct(RewardPointRepository $rewardPointRepository)
    {
        $this->rewardPointRepository = $rewardPointRepository;
        $this->_config = request('_config');
    }

    public function index()
    {
        $customer = auth()->guard('customer')->user();

        if (!$customer) {
            return redirect()->route('customer.session.index');
        }

        $points = $this->rewardPointRepository->getCustomerPoints($customer->id);
        $history = $this->rewardPointRepository->getHistory($customer->id);

        return view($this->_config['view'], compact('points', 'history'));
    }

    public function signIn()
    {
        $customer = auth()->guard('customer')->user();

        if (!$customer) {
            return response()->json(['error' => 'Please login first'], 401);
        }

        $today = Carbon::now()->format('Y-m-d');

        $existingSign = RewardPointCustomerSign::where('customer_id', $customer->id)
            ->where('sign_date', $today)
            ->first();

        if ($existingSign) {
            return response()->json(['error' => 'Already signed in today'], 400);
        }

        $lastSign = RewardPointCustomerSign::where('customer_id', $customer->id)
            ->orderBy('sign_date', 'desc')
            ->first();

        $countDate = 1;
        if ($lastSign) {
            $lastSignDate = Carbon::parse($lastSign->sign_date);
            $yesterday = Carbon::yesterday();

            if ($lastSignDate->toDateString() === $yesterday->toDateString()) {
                $countDate = $lastSign->count_date + 1;
            } elseif ($lastSignDate->toDateString() !== $today) {
                $countDate = 1;
            }
        }

        $rule = RewardActiveRule::where('type_of_transaction', RewardActiveRule::TYPE_SIGN_IN)
            ->where('status', 1)
            ->first();

        if ($rule) {
            $points = $rule->reward_point;
        } else {
            $points = $this->getSignInPointsByDay($countDate);
        }

        $sign = RewardPointCustomerSign::create([
            'customer_id' => $customer->id,
            'sign_date' => $today,
            'count_date' => $countDate,
            'point' => $points,
            'code' => uniqid('SIGN_'),
            'created' => Carbon::now(),
            'updated' => Carbon::now()
        ]);

        $this->rewardPointRepository->addPoints(
            $customer->id,
            RewardActiveRule::TYPE_SIGN_IN,
            $points,
            null,
            "每日签到奖励（第 {$countDate} 天）"
        );

        return response()->json([
            'success' => true,
            'points' => $points,
            'streak' => $countDate,
            'total_points' => $this->rewardPointRepository->getCustomerPoints($customer->id)
        ]);
    }

    /**
     * 根据签到天数获取对应的积分
     */
    protected function getSignInPointsByDay($day)
    {
        $settingRepository = app(\Longyi\RewardPoints\Repositories\RewardPointSettingRepository::class);

        $dayPointsMap = [
            1 => $settingRepository->getConfigValue('signin_day1_points', 10),
            2 => $settingRepository->getConfigValue('signin_day2_points', 10),
            3 => $settingRepository->getConfigValue('signin_day3_points', 15),
            4 => $settingRepository->getConfigValue('signin_day4_points', 25),
            5 => $settingRepository->getConfigValue('signin_day5_points', 50),
            6 => $settingRepository->getConfigValue('signin_day6_points', 70),
            7 => $settingRepository->getConfigValue('signin_day7_points', 70),
        ];

        if ($day <= 7) {
            return (int) $dayPointsMap[$day];
        }

        return (int) $settingRepository->getConfigValue('signin_day8_plus_points', 70);
    }

    public function getSignStatus()
    {
        $customer = auth()->guard('customer')->user();

        if (!$customer) {
            return response()->json(['error' => 'Please login first'], 401);
        }

        $today = Carbon::now()->format('Y-m-d');
        $signedToday = RewardPointCustomerSign::where('customer_id', $customer->id)
            ->where('sign_date', $today)
            ->exists();

        $lastSign = RewardPointCustomerSign::where('customer_id', $customer->id)
            ->orderBy('sign_date', 'desc')
            ->first();

        return response()->json([
            'signed_today' => $signedToday,
            'current_streak' => $lastSign ? $lastSign->count_date : 0,
            'total_points' => $this->rewardPointRepository->getCustomerPoints($customer->id)
        ]);
    }

    /**
     * Apply reward points to cart
     */
    public function applyPoints(Request $request)
    {
        $points = $request->input('points', 0);

        $cartRewardPoints = app('cartrewardpoints');
        $validation = $cartRewardPoints->validatePoints($points);

        if ($validation !== true) {
            return response()->json([
                'success' => false,
                'message' => $validation
            ], 400);
        }

        $result = $cartRewardPoints->applyPoints($points);

        if ($result) {
            $discountDetails = $cartRewardPoints->getDiscountDetails();

            return response()->json([
                'success' => true,
                'message' => 'Reward points applied successfully',
                'discount' => $discountDetails
            ]);
        }

        return response()->json([
            'success' => false,
            'message' => 'Failed to apply reward points'
        ], 400);
    }

    /**
     * Remove reward points from cart
     */
    public function removePoints()
    {
        $cartRewardPoints = app('cartrewardpoints');
        $cartRewardPoints->removePoints();

        return response()->json([
            'success' => true,
            'message' => 'Reward points removed successfully'
        ]);
    }

    /**
     * Get points information for cart
     */
    public function getPointsInfo()
    {
        $cartRewardPoints = app('cartrewardpoints');

        return response()->json([
            'available_points' => $cartRewardPoints->getAvailablePoints(),
            'points_used' => $cartRewardPoints->getPointsUsed(),
            'discount_amount' => $cartRewardPoints->getDiscountAmount(),
            'points_value' => $cartRewardPoints->getPointsValue(1),
            'max_points_allowed' => $cartRewardPoints->getMaxPointsByCartTotal()
        ]);
    }
}