<?php

namespace App\Services;

use Modules\Erprawmaterials\Models\RawMaterial;
use Modules\ErpStock\Models\RawMaterialStockMovement;
use Illuminate\Database\Capsule\Manager as DB;
use App\Helpers\Log;

class RawMaterialStockMovementService
{
    /**
     * Create a stock movement for a raw material.
     *
     * @param array $data Normalized data for the movement
     * @param object $user The current user
     * @return RawMaterialStockMovement
     * @throws \Exception
     */
    public function createMovement(array $data, $user)
    {
        // Validate required fields
        if (empty($data['mp_id'])) {
            throw new \Exception("Raw Material ID is required.");
        }

        // Find the raw material
        $material = RawMaterial::where('mp_id', $data['mp_id'])
            ->where('mp_idbus', $user->users_bus_id)
            ->first();

        if (!$material) {
            throw new \Exception("Raw Material not found.");
        }

        $quantity = $data['quantity'] ?? 0;
        if ($quantity <= 0) {
             throw new \Exception("Invalid quantity: must be greater than zero.");
        }

        $type = $data['type'] ?? 'E'; // E = Entry, S = Exit
        
        // Prepare data for model
        $movementData = [
            'memp_idbus' => $user->users_bus_id,
            'memp_idmp' => $material->mp_id,
            'memp_data' => date('Y-m-d'),
            'memp_idoperador' => $user->users_id,
            'memp_tipoes' => $type,
            'memp_qtdade' => $quantity,
            'memp_historico' => $data['history'] ?? '',
            'memp_documento' => $data['document'] ?? '',
            'memp_lote' => $data['batch'] ?? '',
            'memp_custo' => $data['cost'] ?? 0,
            'memp_preco' => $data['price'] ?? 0,
            'memp_ipi' => $data['ipi'] ?? 0,
            'memp_icms' => $data['icms'] ?? 0,
            'memp_oimpostos' => $data['other_taxes'] ?? 0,
            'memp_obs' => $data['observation'] ?? '',
            'memp_codigo' => $material->mp_codigo,
            'memp_nome' => $material->mp_descricao,
            'memp_idfornecedor' => $data['supplier_id'] ?? 0,
            'memp_idcliente' => $data['customer_id'] ?? 0,
            'memp_idarmazem' => $data['warehouse_id'] ?? 0,
        ];

        // Begin transaction
        DB::beginTransaction();
        try {
            // Create movement record using the ErpStock model which includes warehouse support
            $movement = RawMaterialStockMovement::create($movementData);

            // Update raw material stock level
            if ($type === 'E') {
                $material->mp_estocado += $quantity;
            } else {
                $material->mp_estocado -= $quantity;
            }
            $material->save();

            DB::commit();

            Log::write("Movimentação de estoque ({$type}) para: {$material->mp_descricao} (Qtd: {$quantity})", 'erprawmaterials');

            return $movement;

        } catch (\Exception $e) {
            DB::rollBack();
            throw $e;
        }
    }
}