<?php

namespace Modules\Business\App\Http\Controllers;

use App\Models\Branch;
use App\Models\Stock;
use App\Models\Transfer;
use App\Models\TransferProduct;
use App\Models\Warehouse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use App\Http\Controllers\Controller;
use App\Services\PdfService;
use Maatwebsite\Excel\Facades\Excel;
use Modules\Business\App\Exports\ExportTransfer;

class AcnooTransferController extends Controller
{
    public function __construct()
    {
        $this->middleware('check.permission:transfers.read')->only(['index']);
        $this->middleware('check.permission:transfers.create')->only(['create', 'store']);
        $this->middleware('check.permission:transfers.update')->only(['edit', 'update']);
        $this->middleware('check.permission:transfers.delete')->only(['destroy', 'deleteAll']);
    }

    public function index(Request $request)
    {
        $user = auth()->user();
        $activeBranchId = $user->active_branch_id;

        $branches = Branch::withTrashed()->where('business_id', $user->business_id)->latest()->get();

        $transfers = Transfer::with(['fromWarehouse:id,name', 'toWarehouse:id,name', 'toBranch:id,name', 'fromBranch:id,name', 'transferProducts'])
            ->where('business_id', $user->business_id)
            ->when($activeBranchId, function ($q) use ($activeBranchId) {
                $q->where(function ($query) use ($activeBranchId) {
                    $query->where('from_branch_id', $activeBranchId)
                        ->orWhere('to_branch_id', $activeBranchId);
                });
            })
            ->when($request->branch_id && !$activeBranchId, function ($q) use ($request) {
                $q->where(function ($query) use ($request) {
                    $query->where('from_branch_id', $request->branch_id)->orWhere('to_branch_id', $request->branch_id);
                });
            })
            ->when($request->search, function ($q) use ($request) {
                $search = $request->search;

                $q->where(function ($q) use ($search) {
                    $q->where('note', 'like', '%' . $search . '%')
                        ->orWhere('status', 'like', '%' . $search . '%')
                        ->orWhere('invoice_no', 'like', '%' . $search . '%')
                        ->orWhereHas('fromWarehouse', function ($q) use ($search) {
                            $q->where('name', 'like', '%' . $search . '%');
                        })
                        ->orWhereHas('toWarehouse', function ($q) use ($search) {
                            $q->where('name', 'like', '%' . $search . '%');
                        })
                        ->orWhereHas('toBranch', function ($q) use ($search) {
                            $q->where('name', 'like', '%' . $search . '%');
                        })
                        ->orWhereHas('fromBranch', function ($q) use ($search) {
                            $q->where('name', 'like', '%' . $search . '%');
                        });
                });
            })
            ->latest()
            ->paginate($request->per_page ?? 20)->appends($request->query());

        if ($request->ajax()) {
            return response()->json([
                'data' => view('business::transfers.datas', compact('transfers','branches'))->render()
            ]);
        }

        return view('business::transfers.index', compact('transfers', 'branches'));
    }

    public function create()
    {
        $business_id =  auth()->user()->business_id;
        $warehouses = Warehouse::where('business_id', $business_id)->latest()->get();
        $branches = Branch::withTrashed()->where('business_id', auth()->user()->business_id)->latest()->get();
        return view('business::transfers.create', compact('warehouses', 'branches'));
    }

    public function store(Request $request)
    {
        // Normalize serial_numbers
        if ($request->has('products')) {
            $products = $request->products;

            foreach ($products as $key => $item) {
                if (!empty($item['serial_numbers']) && is_string($item['serial_numbers'])) {
                    $products[$key]['serial_numbers'] = json_decode($item['serial_numbers'], true);
                }
            }

            $request->merge(['products' => $products]);
        }

        $request->validate([
            'from_branch_id' => 'nullable|exists:branches,id',
            'to_branch_id' => 'nullable|exists:branches,id|required_with:from_branch_id',
            'from_warehouse_id' => 'nullable|exists:warehouses,id|required_with:to_warehouse_id',
            'to_warehouse_id' => 'nullable|exists:warehouses,id|required_with:from_warehouse_id',
            'transfer_date' => 'required|date',
            'note' => 'nullable|string',
            'status' => 'required|in:pending,completed,cancelled',
            'shipping_charge' => 'nullable|numeric|min:0',
            'products' => 'required|array|min:1',
            'products.*.quantity' => 'required|integer|min:1',
            'products.*.unit_price' => 'required|numeric|min:0',
            'products.*.discount' => 'nullable|numeric|min:0',
            'products.*.tax' => 'nullable|numeric|min:0',
            'products.*.serial_numbers' => 'nullable|array',
        ]);

        $user = auth()->user();
        $fromBranch = $request->from_branch_id ?? $user->branch_id ?? $user->active_branch_id;
        $toBranch = $request->to_branch_id;
        $fromWh = $request->from_warehouse_id;
        $toWh = $request->to_warehouse_id;

        // Transfer validation
        if ($user->active_branch_id && $toBranch && $toWh) {
            return response()->json(['message' => 'You cannot transfer to another branch warehouse.'], 400);
        }
        if (!$toBranch && !$toWh) {
            return response()->json(['message' => 'Please select a destination branch or warehouse.'], 400);
        }
        if ($fromBranch && !$fromWh && $fromBranch == $toBranch) {
            return response()->json(['message' => 'Same branch transfer is not allowed.'], 400);
        }
        if ($fromWh && $fromWh == $toWh) {
            return response()->json(['message' => 'Same warehouse transfer is not allowed.'], 400);
        }

        DB::beginTransaction();

        try {
            $subTotal = $totalDiscount = $totalTax = 0;

            // products re-arrange
            $products = collect($request->products)->map(function ($item, $key) {
                return array_merge($item, ['stock_id' => $item['stock_id'] ?? $key]);
            });

            // Calculate subtotal using serial count if available
            foreach ($products as $item) {
                $serials = !empty($item['serial_numbers'])
                    ? (is_array($item['serial_numbers']) ? $item['serial_numbers'] : json_decode($item['serial_numbers'], true))
                    : [];
                $qty = !empty($serials) ? count($serials) : $item['quantity'];
                $subTotal += $qty * $item['unit_price'];
                $totalTax += $item['tax'] ?? 0;
                $totalDiscount += $item['discount'] ?? 0;
            }

            $shipping = $request->shipping_charge ?? 0;
            $grandTotal = $subTotal + $totalTax - $totalDiscount + $shipping;

            $transfer = Transfer::create([
                'business_id' => $user->business_id,
                'user_id' => auth()->id(),
                'from_branch_id' => $fromBranch,
                'from_warehouse_id' => $fromWh,
                'to_branch_id' => $toBranch,
                'to_warehouse_id' => $toWh,
                'transfer_date' => $request->transfer_date,
                'status' => $request->status,
                'note' => $request->note,
                'shipping_charge' => $shipping,
                'sub_total' => $subTotal,
                'total_discount' => $totalDiscount,
                'total_tax' => $totalTax,
                'grand_total' => $grandTotal,
            ]);

            $transferProducts = [];

            foreach ($products as $item) {
                $stock = Stock::find($item['stock_id']);
                if (!$stock) {
                    return response()->json(['message' => "Invalid stock ID: {$item['stock_id']}"], 400);
                }

                // Ensure serial_numbers is array
                $serials = !empty($item['serial_numbers'])
                    ? (is_array($item['serial_numbers']) ? $item['serial_numbers'] : json_decode($item['serial_numbers'], true))
                    : [];

                $quantity = !empty($serials) ? count($serials) : $item['quantity'];

                $transferProducts[] = [
                    'transfer_id' => $transfer->id,
                    'stock_id' => $stock->id,
                    'product_id' => $stock->product_id,
                    'quantity' => $quantity,
                    'unit_price' => $item['unit_price'],
                    'discount' => $item['discount'] ?? 0,
                    'tax' => $item['tax'] ?? 0,
                    'serial_numbers' => !empty($serials) ? json_encode($serials) : null,
                    'created_at' => now(),
                    'updated_at' => now(),
                ];

                if ($request->status === 'completed') {
                    // FROM stock
                    $fromStock = Stock::where('id', $stock->id)
                        ->when($fromBranch, fn($q) => $q->where('branch_id', $fromBranch))
                        ->when($fromWh, fn($q) => $q->where('warehouse_id', $fromWh))
                        ->first();

                    if (!$fromStock || $fromStock->productStock < $quantity) {
                        return response()->json(['message' => 'Insufficient stock for product ID: ' . $stock->product_id], 400);
                    }

                    // Remove serials from source
                    if (!empty($serials)) {
                        $existingSerials = is_array($fromStock->serial_numbers) ? $fromStock->serial_numbers : json_decode($fromStock->serial_numbers ?? '[]', true);
                        $fromStock->serial_numbers = array_values(array_diff($existingSerials, $serials));
                    }

                    $fromStock->decrement('productStock', $quantity);
                    $fromStock->save();

                    // TO stock
                    $toStock = Stock::where('product_id', $fromStock->product_id)
                        ->when($toBranch, fn($q) => $q->where('branch_id', $toBranch))
                        ->when($toWh, fn($q) => $q->where('warehouse_id', $toWh))
                        ->where(function ($q) use ($fromStock) {
                            // if destination stock batch is NULL, skip batch compare
                            $q->whereNull('batch_no')
                                // otherwise match same batch
                                ->orWhere('batch_no', $fromStock->batch_no);
                        })
                        ->first();

                    if (!$toStock) {
                        $toStock = new Stock([
                            'business_id' => $user->business_id,
                            'product_id' => $fromStock->product_id,
                            'warehouse_id' => $toWh,
                            'productStock' => 0,
                            'productPurchasePrice' => $fromStock->productPurchasePrice,
                            'profit_percent' => $fromStock->profit_percent,
                            'productSalePrice' => $fromStock->productSalePrice,
                            'exclusive_price' => $fromStock->exclusive_price,
                            'productWholeSalePrice' => $fromStock->productWholeSalePrice,
                            'productDealerPrice' => $fromStock->productDealerPrice,
                            'mfg_date' => $fromStock->mfg_date,
                            'expire_date' => $fromStock->expire_date,
                            'serial_numbers' => !empty($serials) ? $serials : null,
                        ]);

                        // Safe branch assignment
                        $toStock->branch_id = $toBranch ?? $user->active_branch_id;

                        // Save without events/global scopes
                        Stock::withoutEvents(function () use ($toStock) {
                            $toStock->save();
                        });
                    }

                    // Increment destination stock safely
                    $toStock->increment('productStock', $quantity);

                    // Merge serial numbers if exist
                    if (!empty($serials)) {
                        $toStockSerials = is_array($toStock->serial_numbers)
                            ? $toStock->serial_numbers
                            : json_decode($toStock->serial_numbers ?? '[]', true);
                        $toStock->serial_numbers = array_values(array_unique(array_merge($toStockSerials, $serials)));
                        $toStock->save();
                    }
                }
            }

            TransferProduct::insert($transferProducts);

            DB::commit();

            return response()->json([
                'message' => __('Transfer saved successfully.'),
                'data' => $transfer,
                'redirect' => route('business.transfers.index'),
            ]);
        } catch (\Exception $e) {
            DB::rollBack();
            return response()->json([
                'success' => false,
                'message' => $e->getMessage()
            ], 500);
        }
    }

    public function edit($id)
    {
        $user = auth()->user();
        $business_id = $user->business_id;

        $transfer = Transfer::with(['transferProducts.product', 'transferProducts.stock'])
            ->where('business_id', $business_id)
            ->findOrFail($id);

        // Determine the branch to filter warehouses
        $branchId = $user->branch_id ?? $user->active_branch_id;

        $warehousesQuery = Warehouse::where('business_id', $business_id);
        if ($branchId) {
            $warehousesQuery->where('branch_id', $branchId);
        }
        $warehouses = $warehousesQuery->latest()->get();

        $branches = Branch::withTrashed()
            ->where('business_id', $business_id)
            ->latest()
            ->get();

        return view('business::transfers.edit', compact('transfer', 'warehouses', 'branches'));
    }

    public function update(Request $request, $id)
    {
        // Normalize serial_numbers
        if ($request->has('products')) {
            $products = $request->products;

            foreach ($products as $key => $item) {
                if (!empty($item['serial_numbers']) && is_string($item['serial_numbers'])) {
                    $products[$key]['serial_numbers'] = json_decode($item['serial_numbers'], true);
                }
            }

            $request->merge(['products' => $products]);
        }

        $request->validate([
            'from_branch_id' => 'nullable|exists:branches,id',
            'to_branch_id' => 'nullable|exists:branches,id|required_with:from_branch_id',
            'from_warehouse_id' => 'nullable|exists:warehouses,id|required_with:to_warehouse_id',
            'to_warehouse_id' => 'nullable|exists:warehouses,id|required_with:from_warehouse_id',
            'transfer_date' => 'required|date',
            'note' => 'nullable|string',
            'status' => 'required|in:pending,completed,cancelled',
            'shipping_charge' => 'nullable|numeric|min:0',
            'products' => 'required|array|min:1',
            'products.*.quantity' => 'required|integer|min:1',
            'products.*.unit_price' => 'required|numeric|min:0',
            'products.*.discount' => 'nullable|numeric|min:0',
            'products.*.tax' => 'nullable|numeric|min:0',
            'products.*.serial_numbers' => 'nullable|array',
        ]);

        $transfer = Transfer::findOrFail($id);

        if ($request->status === 'cancelled') {
            $transfer->update(['status' => 'cancelled']);
            return response()->json([
                'message' => __('Transfer cancelled successfully.'),
                'redirect' => route('business.transfers.index')
            ]);
        }

        $user = auth()->user();
        $fromBranch = $request->from_branch_id ?? $user->branch_id ?? $user->active_branch_id;
        $toBranch = $request->to_branch_id;
        $fromWh = $request->from_warehouse_id;
        $toWh = $request->to_warehouse_id;

        DB::beginTransaction();

        try {
            $oldStatus = $transfer->status;
            $subTotal = $totalDiscount = $totalTax = 0;

            // Calculate totals using serial count
            foreach ($request->products as $item) {
                $serials = !empty($item['serial_numbers']) ? $item['serial_numbers'] : [];
                $qty = !empty($serials) ? count($serials) : $item['quantity'];

                $subTotal += $qty * $item['unit_price'];
                $totalDiscount += $item['discount'] ?? 0;
                $totalTax += $item['tax'] ?? 0;
            }

            $shipping = $request->shipping_charge ?? 0;
            $grandTotal = $subTotal + $totalTax - $totalDiscount + $shipping;

            // Update transfer
            $transfer->update([
                'user_id' => auth()->id(),
                'from_branch_id' => $fromBranch,
                'to_branch_id' => $toBranch,
                'from_warehouse_id' => $fromWh,
                'to_warehouse_id' => $toWh,
                'transfer_date' => $request->transfer_date,
                'note' => $request->note,
                'status' => $request->status,
                'shipping_charge' => $shipping,
                'sub_total' => $subTotal,
                'total_discount' => $totalDiscount,
                'total_tax' => $totalTax,
                'grand_total' => $grandTotal,
            ]);

            // Delete old transfer products
            TransferProduct::where('transfer_id', $transfer->id)->delete();

            foreach ($request->products as $stockId => $item) {

                $serials = !empty($item['serial_numbers']) ? $item['serial_numbers'] : [];
                $quantity = !empty($serials) ? count($serials) : $item['quantity'];

                // Insert updated transfer product
                TransferProduct::create([
                    'transfer_id' => $transfer->id,
                    'stock_id' => $stockId,
                    'quantity' => $quantity,
                    'unit_price' => $item['unit_price'] ?? 0,
                    'discount' => $item['discount'] ?? 0,
                    'tax' => $item['tax'] ?? 0,
                    'serial_numbers' => !empty($serials) ? $serials : null,
                ]);

                $fromStock = Stock::where('id', $stockId)
                    ->when($fromBranch, fn($q) => $q->where('branch_id', $fromBranch))
                    ->when($fromWh, fn($q) => $q->where('warehouse_id', $fromWh))
                    ->first();

                if (!$fromStock) {
                    return response()->json([
                        'message' => "From stock not found for stock ID: {$stockId}"
                    ], 400);
                }

                $toStock = Stock::where('product_id', $fromStock->product_id)
                    ->when($toBranch, fn($q) => $q->where('branch_id', $toBranch))
                    ->when($toWh, fn($q) => $q->where('warehouse_id', $toWh))
                    ->where(function ($q) use ($fromStock) {
                        // if destination stock batch is NULL, skip batch compare
                        $q->whereNull('batch_no')
                            // otherwise match same batch
                            ->orWhere('batch_no', $fromStock->batch_no);
                    })
                    ->first();

                if (!$toStock) {
                    $toStock = new Stock([
                        'business_id' => $user->business_id,
                        'product_id' => $fromStock->product_id,
                        'warehouse_id' => $toWh,
                        'productStock' => 0,
                        'productPurchasePrice' => $fromStock->productPurchasePrice,
                        'exclusive_price' => $fromStock->exclusive_price,
                        'profit_percent' => $fromStock->profit_percent,
                        'productSalePrice' => $fromStock->productSalePrice,
                        'productWholeSalePrice' => $fromStock->productWholeSalePrice,
                        'productDealerPrice' => $fromStock->productDealerPrice,
                        'mfg_date' => $fromStock->mfg_date,
                        'expire_date' => $fromStock->expire_date,
                    ]);

                    $toStock->branch_id = $toBranch ?? $user->active_branch_id;
                    Stock::withoutEvents(fn() => $toStock->save());
                }

                // Only move stock if changing pending to completed
                if ($oldStatus === 'pending' && $request->status === 'completed') {

                    // Handle serials for source
                    if (!empty($serials)) {
                        $existing = $fromStock->serial_numbers ?? [];
                        foreach ($serials as $s) {
                            if (!in_array($s, $existing)) {
                                return response()->json([
                                    'message' => "Serial {$s} not found in source stock."
                                ], 400);
                            }
                        }
                        // Remove from source
                        $fromStock->serial_numbers = array_values(array_diff($existing, $serials));
                        $fromStock->productStock = count($fromStock->serial_numbers);
                        if ($fromStock->productStock === 0) {
                            $fromStock->serial_numbers = null;
                        }
                    } else {
                        $fromStock->decrement('productStock', $quantity);
                    }
                    $fromStock->save();

                    // Handle serials for destination
                    if (!empty($serials)) {
                        $toExisting = $toStock->serial_numbers ?? [];
                        $toStock->serial_numbers = array_values(array_unique(array_merge($toExisting, $serials)));
                        $toStock->productStock = count($toStock->serial_numbers);
                    } else {
                        $toStock->increment('productStock', $quantity);
                    }
                    $toStock->save();
                }
            }

            DB::commit();

            return response()->json([
                'message' => __('Transfer updated successfully.'),
                'redirect' => route('business.transfers.index'),
            ]);

        } catch (\Exception $e) {
            DB::rollBack();
            return response()->json([
                'message' => 'Error: ' . $e->getMessage(),
            ], 500);
        }
    }
    public function destroy(string $id)
    {
        $business_id = auth()->user()->business_id;
        $transfer = Transfer::with('transferProducts')->where('business_id', $business_id)->findOrFail($id);

        DB::beginTransaction();

        try {
            if ($transfer->status == 'completed') {
                foreach ($transfer->transferProducts as $tp) {
                    $stock = Stock::find($tp->stock_id);

                    // check if destination has enough stock to rollback
                    $toStock = Stock::where('product_id', $tp->product_id)
                        ->where('warehouse_id', $transfer->to_warehouse_id)
                        ->where('branch_id', $transfer->to_branch_id)
                        ->where(function ($q) use ($stock) {
                            $q->whereNull('batch_no')   // if batch NULL → skip compare
                            ->orWhere('batch_no', optional($stock)->batch_no);
                        })
                        ->first();

                    if (!$toStock || $toStock->quantity < $tp->quantity) {
                        return response()->json([
                            'message' => __('Cannot delete. Destination stock not enough to reverse this transfer'),
                        ], 422);
                    }
                }

                foreach ($transfer->transferProducts as $tp) {
                    $stock = Stock::find($tp->stock_id);

                    // decrease destination stock
                    $toStock = Stock::where('product_id', $tp->product_id)
                        ->where('warehouse_id', $transfer->to_warehouse_id)
                        ->where('branch_id', $transfer->to_branch_id)
                        ->where(function ($q) use ($stock) {
                            $q->whereNull('batch_no')
                                ->orWhere('batch_no', optional($stock)->batch_no);
                        })
                        ->first();

                    if ($toStock) {
                        $toStock->decrement('quantity', $tp->quantity);
                    }

                    // increase source stock
                    $fromStock = Stock::where('product_id', $tp->product_id)
                        ->where('warehouse_id', $transfer->from_warehouse_id)
                        ->where('branch_id', $transfer->from_branch_id)
                        ->where(function ($q) use ($stock) {
                            $q->whereNull('batch_no')
                                ->orWhere('batch_no', optional($stock)->batch_no);
                        })
                        ->first();

                    if ($fromStock) {
                        $fromStock->increment('quantity', $tp->quantity);
                    }
                }
            }

            $transfer->delete();

            DB::commit();

            return response()->json([
                'message' => __('Transfer deleted successfully'),
                'redirect' => route('business.transfers.index'),
            ]);
        } catch (\Exception $e) {
            DB::rollBack();
            return response()->json([
                'message' => __('Error while deleting transfer: ') . $e->getMessage(),
            ], 500);
        }
    }

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

        DB::beginTransaction();

        try {
            $transfers = Transfer::with('transferProducts')
                ->where('business_id', $business_id)
                ->whereIn('id', $request->ids)
                ->get();

            foreach ($transfers as $transfer) {
                if ($transfer->status === 'completed') {
                    foreach ($transfer->transferProducts as $tp) {
                        $stock = Stock::find($tp->stock_id);

                        // check if destination has enough stock to rollback
                        $toStock = Stock::where('product_id', $tp->product_id)
                            ->where('warehouse_id', $transfer->to_warehouse_id)
                            ->where('branch_id', $transfer->to_branch_id)
                            ->where(function ($q) use ($stock) {
                                $q->whereNull('batch_no')
                                    ->orWhere('batch_no', optional($stock)->batch_no);
                            })
                            ->first();

                        if (!$toStock || $toStock->quantity < $tp->quantity) {
                            return response()->json([
                                'message' => __('Cannot delete. Destination stock not enough to reverse transfer ID: ') . $transfer->id,
                            ], 422);
                        }
                    }
                }
            }

            foreach ($transfers as $transfer) {
                if ($transfer->status === 'completed') {
                    foreach ($transfer->transferProducts as $tp) {
                        $stock = Stock::find($tp->stock_id);

                        // decrease destination stock
                        $toStock = Stock::where('product_id', $tp->product_id)
                            ->where('warehouse_id', $transfer->to_warehouse_id)
                            ->where('branch_id', $transfer->to_branch_id)
                            ->where(function ($q) use ($stock) {
                                $q->whereNull('batch_no')
                                    ->orWhere('batch_no', optional($stock)->batch_no);
                            })
                            ->first();

                        if ($toStock) {
                            $toStock->decrement('quantity', $tp->quantity);
                        }

                        // increase source stock
                        $fromStock = Stock::where('product_id', $tp->product_id)
                            ->where('warehouse_id', $transfer->from_warehouse_id)
                            ->where('branch_id', $transfer->from_branch_id)
                            ->where(function ($q) use ($stock) {
                                $q->whereNull('batch_no')
                                    ->orWhere('batch_no', optional($stock)->batch_no);
                            })
                            ->first();

                        if ($fromStock) {
                            $fromStock->increment('quantity', $tp->quantity);
                        }
                    }
                }

                $transfer->delete();
            }

            DB::commit();

            return response()->json([
                'message' => __('Selected transfers deleted successfully.'),
                'redirect' => route('business.transfers.index'),
            ]);
        } catch (\Exception $e) {
            DB::rollBack();
            return response()->json([
                'message' => __('Error while deleting transfers: ') . $e->getMessage(),
            ], 500);
        }
    }

    public function exportExcel()
    {
        return Excel::download(new ExportTransfer, 'transfer.xlsx');
    }

    public function exportCsv()
    {
        return Excel::download(new ExportTransfer, 'transfer.csv');
    }

    public function exportPdf(Request $request)
    {
        $user = auth()->user();
        $activeBranchId = $user->active_branch_id;

        $transfers = Transfer::with(['fromWarehouse:id,name', 'toWarehouse:id,name', 'toBranch:id,name', 'fromBranch:id,name', 'transferProducts'])
            ->where('business_id', $user->business_id)
            ->when($activeBranchId, function ($q) use ($activeBranchId) {
                $q->where(function ($query) use ($activeBranchId) {
                    $query->where('from_branch_id', $activeBranchId)
                        ->orWhere('to_branch_id', $activeBranchId);
                });
            })
            ->when($request->branch_id && !$activeBranchId, function ($q) use ($request) {
                $q->where(function ($query) use ($request) {
                    $query->where('from_branch_id', $request->branch_id)->orWhere('to_branch_id', $request->branch_id);
                });
            })
            ->when($request->search, function ($q) use ($request) {
                $search = $request->search;

                $q->where(function ($q) use ($search) {
                    $q->where('note', 'like', '%' . $search . '%')
                        ->orWhere('status', 'like', '%' . $search . '%')
                        ->orWhere('invoice_no', 'like', '%' . $search . '%')
                        ->orWhereHas('fromWarehouse', function ($q) use ($search) {
                            $q->where('name', 'like', '%' . $search . '%');
                        })
                        ->orWhereHas('toWarehouse', function ($q) use ($search) {
                            $q->where('name', 'like', '%' . $search . '%');
                        })
                        ->orWhereHas('toBranch', function ($q) use ($search) {
                            $q->where('name', 'like', '%' . $search . '%');
                        })
                        ->orWhereHas('fromBranch', function ($q) use ($search) {
                            $q->where('name', 'like', '%' . $search . '%');
                        });
                });
            })
            ->latest()
            ->limit(request('per_page') ?? 20)->get();

        return PdfService::render('business::transfers.pdf', compact('transfers'),'transfers.pdf');
    }
}