<?php

namespace Modules\Business\App\Http\Controllers;

use App\Http\Controllers\Controller;
use App\Models\Purchase;
use App\Models\PurchaseReturnDetail;
use App\Models\Sale;
use App\Models\SaleDetails;
use App\Models\SaleReturnDetails;
use App\Models\Vat;
use App\Models\VatTransaction;
use App\Services\PdfService;
use App\Traits\DateFilterTrait;
use App\Traits\DateRangeTrait;
use Illuminate\Http\Request;
use Maatwebsite\Excel\Facades\Excel;
use Modules\Business\App\Exports\ExportTaxReport;

class AcnooVatReportController extends Controller
{
    use DateFilterTrait, DateRangeTrait;

    public function __construct()
    {
        $this->middleware('check.permission:vat-reports.read')->only(['index']);
    }

    public function index(Request $request)
    {
        $businessId = auth()->user()->business_id;

        $vats = Vat::where('business_id', $businessId)
                    ->whereStatus(1)
                    ->get();

        $duration = $request->custom_days ?: 'today';
        [$filter_from_date, $filter_to_date] = $this->applyDateRange($duration, $request->from_date, $request->to_date);

        $salesQuery = Sale::where('business_id', $businessId)
            ->with([
                'user:id,name',
                'party:id,name,email,phone,type',
                'business:id,companyName',
                'payment_type:id,name',
                'transactions'
            ]);

        $this->applyDateFilter(
            $salesQuery,
            $duration,
            'saleDate',
            $request->from_date,
            $request->to_date
        );

        if ($request->filled('search')) {
            $search = $request->search;
            $salesQuery->where(function ($query) use ($search) {
                $query->where('invoiceNumber', 'like', '%' . $search . '%')
                    ->orWhere('totalAmount', 'like', '%' . $search . '%')
                    ->orWhere('discountAmount', 'like', '%' . $search . '%')
                    ->orWhereHas('party', fn($q) => $q->where('name', 'like', '%' . $search . '%')->orWhere('tax_no', 'like', '%' . $search . '%'));
            });
        }

        $sales = $salesQuery->latest()->paginate($request->per_page ?? 20, ['*'], 'sales')->appends($request->query());

        $salesVatTotals = VatTransaction::where('vat_transactions.business_id', $businessId)
                            ->where('vat_transactions.vatable_type', SaleDetails::class)
                            ->join('sale_details', 'sale_details.id', '=', 'vat_transactions.vatable_id')
                            ->join('sales', 'sales.id', '=', 'sale_details.sale_id')
                            ->where('sales.business_id', $businessId)
                            ->selectRaw('vat_transactions.vat_id, SUM(vat_transactions.vat_amount) as total')
                            ->groupBy('vat_transactions.vat_id')
                            ->pluck('total','vat_transactions.vat_id')
                            ->toArray();

        $salesReturnVatTotals = VatTransaction::where('vat_transactions.business_id', $businessId)
                                    ->where('vat_transactions.vatable_type', SaleReturnDetails::class)
                                    ->join('sale_return_details', 'sale_return_details.id', '=', 'vat_transactions.vatable_id')
                                    ->join('sale_details', 'sale_details.id', '=', 'sale_return_details.sale_detail_id')
                                    ->join('sales', 'sales.id', '=', 'sale_details.sale_id')
                                    ->where('sales.business_id', $businessId)
                                    ->selectRaw('vat_transactions.vat_id, SUM(vat_transactions.vat_amount) as total')
                                    ->groupBy('vat_transactions.vat_id')
                                    ->pluck('total', 'vat_transactions.vat_id')
                                    ->toArray();

        $saleVatRowMap = VatTransaction::where('business_id', $businessId)
                            ->where('vatable_type', \App\Models\SaleDetails::class)
                            ->whereIn('vatable_id', function ($query) use ($businessId, $duration, $request) {
                                $query->select('sale_details.id')
                                    ->from('sale_details')
                                    ->join('sales', 'sales.id', '=', 'sale_details.sale_id')
                                    ->where('sales.business_id', $businessId);

                                if ($duration === 'custom_days' && $request->from_date && $request->to_date) {
                                    $query->whereBetween('sales.saleDate', [$request->from_date, $request->to_date]);
                                }
                            })
                            ->join('sale_details', 'sale_details.id', '=', 'vat_transactions.vatable_id')
                            ->selectRaw('sale_details.sale_id, vat_transactions.vat_id, SUM(vat_transactions.vat_amount) as total')
                            ->groupBy('sale_details.sale_id', 'vat_transactions.vat_id')
                            ->get()
                            ->groupBy('sale_id')
                            ->map(function ($items) {
                                return $items->pluck('total', 'vat_id')->toArray();
                            })
                            ->toArray();

        $saleReturnVatRows = VatTransaction::where('vat_transactions.business_id', $businessId)
                                ->where('vat_transactions.vatable_type', SaleReturnDetails::class)

                                ->join('sale_return_details','sale_return_details.id','=','vat_transactions.vatable_id')
                                ->join('sale_details','sale_details.id','=','sale_return_details.sale_detail_id')
                                ->join('sales','sales.id','=','sale_details.sale_id')

                                ->selectRaw('sales.id as sale_id, vat_transactions.vat_id, SUM(vat_transactions.vat_amount) as vat_amount')
                                ->groupBy('sales.id','vat_transactions.vat_id')
                                ->get();

        $saleReturnVatRowMap = $saleReturnVatRows
                                    ->groupBy('sale_id')
                                    ->map(fn($rows)=>$rows->pluck('vat_amount','vat_id'))
                                    ->toArray();

        $purchasesQuery = Purchase::with([
                'details',
                'party',
                'details.product',
                'details.product.category',
                'payment_type:id,name',
                'transactions'
            ])
            ->where('business_id', $businessId);

        $this->applyDateFilter(
            $purchasesQuery,
            $duration,
            'purchaseDate',
            $request->from_date,
            $request->to_date
        );

        if ($request->filled('search')) {
            $search = $request->search;
            $purchasesQuery->where(function ($query) use ($search) {
                $query->where('invoiceNumber', 'like', '%' . $search . '%')
                    ->orWhere('totalAmount', 'like', '%' . $search . '%')
                    ->orWhere('discountAmount', 'like', '%' . $search . '%')
                    ->orWhereHas('party', fn($q) => $q->where('name', 'like', '%' . $search . '%')->orWhere('tax_no', 'like', '%' . $search . '%'));
            });
        }

        $purchases = $purchasesQuery->latest()->paginate($request->per_page ?? 20, ['*'], 'purchases')->appends($request->query());

        $purchasesVatTotals = VatTransaction::where('vat_transactions.business_id', $businessId)
                                ->where('vat_transactions.vatable_type', \App\Models\PurchaseDetails::class)
                                ->join('purchase_details', 'purchase_details.id', '=', 'vat_transactions.vatable_id')
                                ->join('purchases', 'purchases.id', '=', 'purchase_details.purchase_id')
                                ->where('purchases.business_id', $businessId)
                                ->selectRaw('vat_transactions.vat_id, SUM(vat_transactions.vat_amount) as total')
                                ->groupBy('vat_transactions.vat_id')
                                ->pluck('total','vat_transactions.vat_id')
                                ->toArray();


        $purchaseReturnVatTotals = VatTransaction::where('vat_transactions.business_id', $businessId)
                                        ->where('vat_transactions.vatable_type', PurchaseReturnDetail::class)
                                        ->join('purchase_return_details', 'purchase_return_details.id', '=', 'vat_transactions.vatable_id')
                                        ->join('purchase_details', 'purchase_details.id', '=', 'purchase_return_details.purchase_detail_id')
                                        ->join('purchases', 'purchases.id', '=', 'purchase_details.purchase_id')
                                        ->where('purchases.business_id', $businessId)
                                        ->selectRaw('vat_transactions.vat_id, SUM(vat_transactions.vat_amount) as total')
                                        ->groupBy('vat_transactions.vat_id')
                                        ->pluck('total', 'vat_transactions.vat_id')
                                        ->toArray();

        $purchaseVatRowMap = VatTransaction::where('business_id', $businessId)
                                ->where('vatable_type', \App\Models\PurchaseDetails::class)
                                ->whereIn('vatable_id', function ($query) use ($businessId, $duration, $request) {
                                    $query->select('purchase_details.id')
                                        ->from('purchase_details')
                                        ->join('purchases', 'purchases.id', '=', 'purchase_details.purchase_id')
                                        ->where('purchases.business_id', $businessId);

                                    if ($duration === 'custom_date' && $request->from_date && $request->to_date) {
                                        $query->whereBetween('purchases.purchaseDate', [$request->from_date, $request->to_date]);
                                    }
                                })
                                ->join('purchase_details', 'purchase_details.id', '=', 'vat_transactions.vatable_id')
                                ->selectRaw('purchase_details.purchase_id, vat_transactions.vat_id, SUM(vat_transactions.vat_amount) as total')
                                ->groupBy('purchase_details.purchase_id', 'vat_transactions.vat_id')
                                ->get()
                                ->groupBy('purchase_id')
                                ->map(function ($items) {
                                    return $items->pluck('total', 'vat_id')->toArray();
                                })
                                ->toArray();

            $purchaseReturnVatRows = VatTransaction::where('vat_transactions.business_id', $businessId)
                                        ->where('vat_transactions.vatable_type', PurchaseReturnDetail::class)

                                        ->join('purchase_return_details','purchase_return_details.id','=','vat_transactions.vatable_id')
                                        ->join('purchase_details','purchase_details.id','=','purchase_return_details.purchase_detail_id')
                                        ->join('purchases','purchases.id','=','purchase_details.purchase_id')

                                        ->selectRaw('purchases.id as purchase_id, vat_transactions.vat_id, SUM(vat_transactions.vat_amount) as vat_amount')
                                        ->groupBy('purchases.id','vat_transactions.vat_id')
                                        ->get();

            $purchaseReturnVatRowMap = $purchaseReturnVatRows
                                            ->groupBy('purchase_id')
                                            ->map(fn($rows) => $rows->pluck('vat_amount','vat_id'))
                                            ->toArray();

        if ($request->ajax()) {
            return response()->json([
                'sale_data' => view('business::reports.vats.sale-datas', compact(
                    'sales',
                    'salesVatTotals',
                    'salesReturnVatTotals',
                    'saleVatRowMap',
                    'saleReturnVatRowMap',
                    'vats',
                    'filter_from_date',
                    'filter_to_date',
                    'duration'
                ))->render(),

                'purchase_data' => view('business::reports.vats.purchase-datas', compact(
                    'purchases',
                    'purchasesVatTotals',
                    'purchaseReturnVatTotals',
                    'purchaseVatRowMap',
                    'purchaseReturnVatRowMap',
                    'vats',
                    'filter_from_date',
                    'filter_to_date',
                    'duration'
                ))->render(),
            ]);
        }

        return view('business::reports.vats.index', compact(
            'sales',
            'salesVatTotals',
            'salesReturnVatTotals',
            'saleVatRowMap',
            'saleReturnVatRowMap',
            'purchases',
            'purchasesVatTotals',
            'purchaseReturnVatTotals',
            'purchaseVatRowMap',
            'purchaseReturnVatRowMap',
            'vats',
            'filter_from_date',
            'filter_to_date',
            'duration'
        ));
    }

    public function exportExcel()
    {
        return Excel::download(new ExportTaxReport, 'tax-report.xlsx');
    }

    public function exportCsv()
    {
        return Excel::download(new ExportTaxReport, 'tax-report.csv');
    }

    public function exportPdf(Request $request)
    {
        $businessId = auth()->user()->business_id;
        $type = $request->type ?? 'sales';

        $duration = $request->custom_days ?: 'today';
        [$filter_from_date, $filter_to_date] = $this->applyDateRange($duration, $request->from_date, $request->to_date);

        // SALES QUERY
        $salesQuery = Sale::with('party', 'payment_type', 'transactions')
            ->where('business_id', $businessId);

        $this->applyDateFilter($salesQuery, $duration, 'saleDate', $request->from_date, $request->to_date);

        if ($request->filled('search')) {
            $search = $request->search;
            $salesQuery->where(function ($query) use ($search) {
                $query->where('invoiceNumber', 'like', '%' . $search . '%')
                    ->orWhere('totalAmount', 'like', '%' . $search . '%')
                    ->orWhere('discountAmount', 'like', '%' . $search . '%')
                    ->orWhereHas('party', fn($q) => $q->where('name', 'like', '%' . $search . '%')->orWhere('tax_no', 'like', '%' . $search . '%'));
            });
        }

        $salesVatTotals = VatTransaction::where('vat_transactions.business_id', $businessId)
            ->where('vat_transactions.vatable_type', SaleDetails::class)
            ->join('sale_details', 'sale_details.id', '=', 'vat_transactions.vatable_id')
            ->join('sales', 'sales.id', '=', 'sale_details.sale_id')
            ->where('sales.business_id', $businessId)
            ->selectRaw('vat_transactions.vat_id, SUM(vat_transactions.vat_amount) as total')
            ->groupBy('vat_transactions.vat_id')
            ->pluck('total','vat_transactions.vat_id')
            ->toArray();

        $salesReturnVatTotals = VatTransaction::where('vat_transactions.business_id', $businessId)
            ->where('vat_transactions.vatable_type', SaleReturnDetails::class)
            ->join('sale_return_details', 'sale_return_details.id', '=', 'vat_transactions.vatable_id')
            ->join('sale_details', 'sale_details.id', '=', 'sale_return_details.sale_detail_id')
            ->join('sales', 'sales.id', '=', 'sale_details.sale_id')
            ->where('sales.business_id', $businessId)
            ->selectRaw('vat_transactions.vat_id, SUM(vat_transactions.vat_amount) as total')
            ->groupBy('vat_transactions.vat_id')
            ->pluck('total', 'vat_transactions.vat_id')
            ->toArray();

        $saleVatRowMap = VatTransaction::where('business_id', $businessId)
            ->where('vatable_type', \App\Models\SaleDetails::class)
            ->whereIn('vatable_id', function ($query) use ($businessId, $duration, $request) {
                $query->select('sale_details.id')
                    ->from('sale_details')
                    ->join('sales', 'sales.id', '=', 'sale_details.sale_id')
                    ->where('sales.business_id', $businessId);

                if ($duration === 'custom_days' && $request->from_date && $request->to_date) {
                    $query->whereBetween('sales.saleDate', [$request->from_date, $request->to_date]);
                }
            })
            ->join('sale_details', 'sale_details.id', '=', 'vat_transactions.vatable_id')
            ->selectRaw('sale_details.sale_id, vat_transactions.vat_id, SUM(vat_transactions.vat_amount) as total')
            ->groupBy('sale_details.sale_id', 'vat_transactions.vat_id')
            ->get()
            ->groupBy('sale_id')
            ->map(function ($items) {
                return $items->pluck('total', 'vat_id')->toArray();
            })
            ->toArray();

        $saleReturnVatRows = VatTransaction::where('vat_transactions.business_id', $businessId)
            ->where('vat_transactions.vatable_type', SaleReturnDetails::class)

            ->join('sale_return_details','sale_return_details.id','=','vat_transactions.vatable_id')
            ->join('sale_details','sale_details.id','=','sale_return_details.sale_detail_id')
            ->join('sales','sales.id','=','sale_details.sale_id')

            ->selectRaw('sales.id as sale_id, vat_transactions.vat_id, SUM(vat_transactions.vat_amount) as vat_amount')
            ->groupBy('sales.id','vat_transactions.vat_id')
            ->get();

        $saleReturnVatRowMap = $saleReturnVatRows
            ->groupBy('sale_id')
            ->map(fn($rows)=>$rows->pluck('vat_amount','vat_id'))
            ->toArray();

        // PURCHASE QUERY
        $purchasesQuery = Purchase::with('party', 'payment_type', 'transactions')
            ->where('business_id', $businessId);

        $this->applyDateFilter($purchasesQuery, $duration, 'purchaseDate', $request->from_date, $request->to_date);

        if ($request->filled('search')) {
            $search = $request->search;
            $purchasesQuery->where(function ($query) use ($search) {
                $query->where('invoiceNumber', 'like', '%' . $search . '%')
                    ->orWhere('totalAmount', 'like', '%' . $search . '%')
                    ->orWhere('discountAmount', 'like', '%' . $search . '%')
                    ->orWhereHas('party', fn($q) => $q->where('name', 'like', '%' . $search . '%')->orWhere('tax_no', 'like', '%' . $search . '%'));
            });
        }

        $purchasesVatTotals = VatTransaction::where('vat_transactions.business_id', $businessId)
            ->where('vat_transactions.vatable_type', \App\Models\PurchaseDetails::class)
            ->join('purchase_details', 'purchase_details.id', '=', 'vat_transactions.vatable_id')
            ->join('purchases', 'purchases.id', '=', 'purchase_details.purchase_id')
            ->where('purchases.business_id', $businessId)
            ->selectRaw('vat_transactions.vat_id, SUM(vat_transactions.vat_amount) as total')
            ->groupBy('vat_transactions.vat_id')
            ->pluck('total','vat_transactions.vat_id')
            ->toArray();


        $purchaseReturnVatTotals = VatTransaction::where('vat_transactions.business_id', $businessId)
            ->where('vat_transactions.vatable_type', PurchaseReturnDetail::class)
            ->join('purchase_return_details', 'purchase_return_details.id', '=', 'vat_transactions.vatable_id')
            ->join('purchase_details', 'purchase_details.id', '=', 'purchase_return_details.purchase_detail_id')
            ->join('purchases', 'purchases.id', '=', 'purchase_details.purchase_id')
            ->where('purchases.business_id', $businessId)
            ->selectRaw('vat_transactions.vat_id, SUM(vat_transactions.vat_amount) as total')
            ->groupBy('vat_transactions.vat_id')
            ->pluck('total', 'vat_transactions.vat_id')
            ->toArray();

        $purchaseVatRowMap = VatTransaction::where('business_id', $businessId)
            ->where('vatable_type', \App\Models\PurchaseDetails::class)
            ->whereIn('vatable_id', function ($query) use ($businessId, $duration, $request) {
                $query->select('purchase_details.id')
                    ->from('purchase_details')
                    ->join('purchases', 'purchases.id', '=', 'purchase_details.purchase_id')
                    ->where('purchases.business_id', $businessId);

                if ($duration === 'custom_date' && $request->from_date && $request->to_date) {
                    $query->whereBetween('purchases.purchaseDate', [$request->from_date, $request->to_date]);
                }
            })
            ->join('purchase_details', 'purchase_details.id', '=', 'vat_transactions.vatable_id')
            ->selectRaw('purchase_details.purchase_id, vat_transactions.vat_id, SUM(vat_transactions.vat_amount) as total')
            ->groupBy('purchase_details.purchase_id', 'vat_transactions.vat_id')
            ->get()
            ->groupBy('purchase_id')
            ->map(function ($items) {
                return $items->pluck('total', 'vat_id')->toArray();
            })
            ->toArray();

        $purchaseReturnVatRows = VatTransaction::where('vat_transactions.business_id', $businessId)
            ->where('vat_transactions.vatable_type', PurchaseReturnDetail::class)

            ->join('purchase_return_details','purchase_return_details.id','=','vat_transactions.vatable_id')
            ->join('purchase_details','purchase_details.id','=','purchase_return_details.purchase_detail_id')
            ->join('purchases','purchases.id','=','purchase_details.purchase_id')

            ->selectRaw('purchases.id as purchase_id, vat_transactions.vat_id, SUM(vat_transactions.vat_amount) as vat_amount')
            ->groupBy('purchases.id','vat_transactions.vat_id')
            ->get();

        $purchaseReturnVatRowMap = $purchaseReturnVatRows
            ->groupBy('purchase_id')
            ->map(fn($rows) => $rows->pluck('vat_amount','vat_id'))
            ->toArray();

        // TAB CONTROL
        $sales = collect();
        $purchases = collect();

        $limit = $request->per_page ?? 20;

        if ($type === 'sales') {
            $sales = $salesQuery->latest()->limit($limit)->get();
        }

        if ($type === 'purchases') {
            $purchases = $purchasesQuery->latest()->limit($limit)->get();
        }

        $vats = Vat::where('business_id', $businessId)->get();

        return PdfService::render('business::reports.vats.pdf',
            compact(
                'sales',
                'salesVatTotals',
                'salesReturnVatTotals',
                'saleVatRowMap',
                'saleReturnVatRowMap',
                'purchases',
                'purchasesVatTotals',
                'purchaseReturnVatTotals',
                'purchaseVatRowMap',
                'purchaseReturnVatRowMap',
                'vats',
                'type',
                'filter_from_date',
                'filter_to_date',
                'duration'
            ), 'tax-report.pdf', 'A4', 'L'
        );
    }
}