<?php

namespace App\Livewire\Home;

use App\Models\Outlet;
use App\Models\Voucher as VoucherModel;
use App\Traits\Components\WithToast;
use Illuminate\Contracts\View\View;
use Illuminate\Support\Facades\DB;
use Livewire\Attributes\Layout;
use Livewire\Component;
use Livewire\WithPagination;

#[Layout('components.layouts.home', [
    'title' => 'Voucher',
])]
class Voucher extends Component
{
    use WithPagination, WithToast;

    public $outlets;

    public string $search = '';

    public ?string $outlet_id = null;

    public ?string $sort = null;

    public ?VoucherModel $selectedVoucher = null;

    public bool $showDetailModal = false;

    public function mount(): void
    {
        $this->outlets = Outlet::query()->operational()->pluck('name', 'id');
    }

    public function updatedSearch(): void
    {
        $this->resetPage();
    }

    public function updatedOutletId(): void
    {
        $this->resetPage();
    }

    public function updatedSort(): void
    {
        $this->resetPage();
    }

    public function showDetail(string $hashId): void
    {
        $this->selectedVoucher = VoucherModel::byHash($hashId);
        $this->selectedVoucher->load('outlets');

        $this->selectedVoucher->min_purchase_formatted = formatCurrencyNumber($this->selectedVoucher->min_purchase, 'Rp');
        $this->selectedVoucher->end_date_formatted = formatDateLocalized($this->selectedVoucher->end_date);

        $this->showDetailModal = true;
    }

    public function closeDetail(): void
    {
        $this->showDetailModal = false;
        $this->selectedVoucher = null;
    }

    public function claim(string $hashId): void
    {
        if (! auth()->check()) {
            $this->redirect(route('login'), navigate: true);

            return;
        }

        $voucher = VoucherModel::byHash($hashId);
        $user = auth()->user();

        // Basic checks
        if (! $voucher) {
            $this->toast('Voucher tidak ditemukan.', 'Gagal', 'danger');

            return;
        }

        if ($voucher->quota !== null && $voucher->available_count >= $voucher->quota) {
            $this->toast('Klaim gagal! Kuota voucher sudah habis.', 'Gagal', 'danger');

            return;
        }

        // Check if user already reached limit
        $claimedCount = $user->vouchers()->where('voucher_id', $voucher->id)->exists();
        if ($voucher->limit_per_user !== null) {
            $claimedCount = $user->vouchers()->where('voucher_id', $voucher->id)->count();
            if ($claimedCount >= $voucher->limit_per_user) {
                $this->toast('Anda sudah mencapai batas klaim untuk voucher ini.', 'Peringatan', 'warning');

                return;
            }
        } elseif ($claimedCount) {
            // If limit_per_user is null, assume it can only be claimed once?
            // Or can it be claimed multiple times?
            // Usually vouchers are one-time claim per user unless specified.
            // Based on common logic, if limit_per_user is null, maybe it's unlimited?
            // But usually it's 1. Let's stick to the limit_per_user check.
        }

        // Check if voucher is for specific tier
        $userTierId = $user->membership?->tier_id;
        if ($voucher->tiers()->exists() && ! $voucher->tiers()->where('tiers.id', $userTierId)->exists()) {
            $this->toast('Voucher ini tidak tersedia untuk tier Anda.', 'Gagal', 'danger');

            return;
        }

        try {
            // Claim with transaction
            DB::transaction(function () use ($user, $voucher) {
                // Re-check quota inside transaction
                $v = VoucherModel::where('id', $voucher->id)->lockForUpdate()->first();
                if ($v->quota !== null && $v->available_count >= $v->quota) {
                    throw new \Exception('Kuota voucher sudah habis.');
                }

                $user->vouchers()->attach($v->id);
                $v->increment('available_count');
            });

            $this->toast('Voucher berhasil diklaim! Silakan cek di menu Voucher Saya.', 'Berhasil', 'success');
        } catch (\Throwable $e) {
            $this->toast($e->getMessage(), 'Gagal', 'danger');
        }
    }

    public function render(): View
    {
        $vouchers = VoucherModel::where(function ($query) {
            $query->where('name', 'like', '%'.$this->search.'%')
                ->orWhere('code', 'like', '%'.$this->search.'%');
        })
            ->when($this->outlet_id, function ($query) {
                $query->whereHas('outlets', function ($q) {
                    $q->where('outlets.id', $this->outlet_id);
                });
            })
            ->when($this->sort, function ($query) {
                match ($this->sort) {
                    'latest' => $query->orderBy('created_at', 'desc'),
                    'biggest' => $query->orderBy('discount_amount', 'desc'),
                    'ending-soon' => $query->orderByRaw('end_date IS NULL')
                        ->orderBy('end_date', 'asc'),
                };
            })
            ->active()
            ->latest()
            ->paginate(3)
            ->through(function (VoucherModel $voucher) {
                $voucher->min_purchase_formatted = formatCurrencyNumber($voucher->min_purchase, 'Rp');
                $voucher->end_date = formatDateLocalized($voucher->end_date);

                return $voucher;
            });

        return view('livewire.home.vouchers', [
            'vouchers' => $vouchers,
        ]);
    }
}