<?php

namespace App\Http\Controllers;

use App\Jobs\ClearYearDataJob;
use App\Models\Contract;
use App\Models\File;
use App\Models\MafOrder;
use App\Models\Order;
use App\Models\Product;
use App\Models\ProductSKU;
use App\Models\Reclamation;
use App\Models\Schedule;
use App\Models\Ttn;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;

class ClearDataController extends Controller
{
    public function index(): View
    {
        return view('clear-data.index', [
            'active' => 'clear-data',
            'years' => $this->getAvailableYears(),
        ]);
    }

    public function stats(Request $request): JsonResponse
    {
        $year = (int) $request->input('year');

        if ($year < 2020 || $year > 2100) {
            return response()->json(['error' => 'Некорректный год'], 422);
        }

        $stats = $this->collectStats($year);

        return response()->json([
            'year' => $year,
            'stats' => $stats,
            'total' => array_sum($stats),
        ]);
    }

    public function destroy(Request $request)
    {
        $year = (int) $request->input('year');

        if ($year < 2020 || $year > 2100) {
            return redirect()->back()->with('danger', 'Некорректный год');
        }

        ClearYearDataJob::dispatch($year, $request->user()->id);

        return redirect()->route('clear-data.index')->with('success', 'Удаление данных за ' . $year . ' год запущено. Вы получите уведомление о завершении.');
    }

    private function getAvailableYears(): array
    {
        $years = [];

        $orderYears = Order::withoutGlobalScopes()->withTrashed()
            ->selectRaw('DISTINCT year')
            ->pluck('year')
            ->toArray();

        $productYears = Product::withoutGlobalScopes()->withTrashed()
            ->selectRaw('DISTINCT year')
            ->pluck('year')
            ->toArray();

        $mafOrderYears = MafOrder::withoutGlobalScopes()->withTrashed()
            ->selectRaw('DISTINCT year')
            ->pluck('year')
            ->toArray();

        $contractYears = Contract::selectRaw('DISTINCT year')
            ->pluck('year')
            ->toArray();

        $ttnYears = Ttn::selectRaw('DISTINCT year')
            ->pluck('year')
            ->toArray();

        $years = array_unique(array_merge($orderYears, $productYears, $mafOrderYears, $contractYears, $ttnYears));
        rsort($years);

        return $years;
    }

    private function collectStats(int $year): array
    {
        $orderIds = Order::withoutGlobalScopes()->withTrashed()->where('year', $year)->pluck('id');
        $productIds = Product::withoutGlobalScopes()->withTrashed()->where('year', $year)->pluck('id');
        $mafOrderIds = MafOrder::withoutGlobalScopes()->withTrashed()->where('year', $year)->pluck('id');
        $productSkuIds = ProductSKU::withoutGlobalScopes()->withTrashed()->where('year', $year)->pluck('id');

        $reclamationCount = Reclamation::whereIn('order_id', $orderIds)->count();
        $fileIds = $this->collectFileIds($year, $orderIds, $productIds, $productSkuIds);

        return [
            'Заказы (Orders)' => $orderIds->count(),
            'Заказы МАФ (MafOrders)' => $mafOrderIds->count(),
            'Продукты (Products)' => $productIds->count(),
            'SKU продуктов (ProductSKU)' => $productSkuIds->count(),
            'Рекламации (Reclamations)' => $reclamationCount,
            'Расписания (Schedules)' => Schedule::whereIn('order_id', $orderIds)->count(),
            'ТТН (Ttns)' => Ttn::where('year', $year)->count(),
            'Контракты (Contracts)' => Contract::where('year', $year)->count(),
            'Файлы (Files)' => $fileIds->count(),
        ];
    }

    private function collectFileIds(int $year, $orderIds, $productIds, $productSkuIds): \Illuminate\Support\Collection
    {
        $fileIds = collect();

        $fileIds = $fileIds->merge(
            \DB::table('order_photo')->whereIn('order_id', $orderIds)->pluck('file_id')
        );
        $fileIds = $fileIds->merge(
            \DB::table('order_document')->whereIn('order_id', $orderIds)->pluck('file_id')
        );
        $fileIds = $fileIds->merge(
            \DB::table('order_statement')->whereIn('order_id', $orderIds)->pluck('file_id')
        );

        $reclamationIds = Reclamation::whereIn('order_id', $orderIds)->pluck('id');

        $fileIds = $fileIds->merge(
            \DB::table('reclamation_photo_before')->whereIn('reclamation_id', $reclamationIds)->pluck('file_id')
        );
        $fileIds = $fileIds->merge(
            \DB::table('reclamation_photo_after')->whereIn('reclamation_id', $reclamationIds)->pluck('file_id')
        );
        $fileIds = $fileIds->merge(
            \DB::table('reclamation_document')->whereIn('reclamation_id', $reclamationIds)->pluck('file_id')
        );
        $fileIds = $fileIds->merge(
            \DB::table('reclamation_act')->whereIn('reclamation_id', $reclamationIds)->pluck('file_id')
        );

        $fileIds = $fileIds->merge(
            Product::withoutGlobalScopes()->withTrashed()
                ->whereIn('id', $productIds)
                ->whereNotNull('certificate_id')
                ->pluck('certificate_id')
        );

        $fileIds = $fileIds->merge(
            ProductSKU::withoutGlobalScopes()->withTrashed()
                ->whereIn('id', $productSkuIds)
                ->whereNotNull('passport_id')
                ->pluck('passport_id')
        );

        $fileIds = $fileIds->merge(
            Ttn::where('year', $year)->whereNotNull('file_id')->pluck('file_id')
        );

        return $fileIds->unique();
    }
}