<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Support\Facades\Storage;

class Product extends Model
{
    protected $fillable = [
        'nom',
        'reference',
        'categorie_id',
        'fabricant',
        'stock_actuel',
        'stock_minimum',
        'unite',
        'prix_unitaire',
        'date_expiration',
        'numero_lot',
        'conditionnement_nom',
        'conditionnement_quantite',
        'conditionnement_unite',
        'image',
        'fiche_technique_url',
        'fournisseur_id',
    ];

    protected $casts = [
        'stock_actuel' => 'decimal:2',
        'stock_minimum' => 'decimal:2',
        'prix_unitaire' => 'decimal:2',
        'conditionnement_quantite' => 'decimal:2',
        'date_expiration' => 'date',
    ];

    /**
     * Get the fournisseur that owns the product.
     */
    public function fournisseur(): BelongsTo
    {
        return $this->belongsTo(Fournisseur::class);
    }

    /**
     * Get the category that owns the product.
     */
    public function category(): BelongsTo
    {
        return $this->belongsTo(ProductCategory::class, 'categorie_id');
    }

    /**
     * Handle image upload
     */
    public function uploadImage($image)
    {
        if ($image) {
            // Delete old image if exists
            if ($this->image) {
                $this->deleteImage();
            }

            // Store the new image
            $imageName = time() . '_' . uniqid() . '.' . $image->getClientOriginalExtension();
            $imagePath = $image->storeAs('products', $imageName, 'public');

            $this->image = $imagePath;
            $this->save();

            return $imagePath;
        }

        return null;
    }

    /**
     * Delete the product image
     */
    public function deleteImage()
    {
        if ($this->image) {
            Storage::disk('public')->delete($this->image);
            $this->image = null;
            $this->save();
        }
    }

    /**
     * Get the full URL of the image
     */
    public function getImageUrlAttribute()
    {
        if ($this->image) {
            return Storage::url($this->image);
        }

        return null;
    }

    /**
     * Get the stock items for the product.
     */
    public function stockItems(): \Illuminate\Database\Eloquent\Relations\HasMany
    {
        return $this->hasMany(StockItem::class);
    }

    /**
     * Get the packagings for the product.
     */
    public function packagings(): \Illuminate\Database\Eloquent\Relations\HasMany
    {
        return $this->hasMany(\App\Models\Stock\ProductPackaging::class);
    }

    /**
     * Get the stock moves for the product.
     */
    public function stockMoves(): \Illuminate\Database\Eloquent\Relations\HasMany
    {
        return $this->hasMany(StockMove::class);
    }

    /**
     * Get the goods receipt lines for the product.
     */
    public function goodsReceiptLines(): \Illuminate\Database\Eloquent\Relations\HasMany
    {
        return $this->hasMany(GoodsReceiptLine::class);
    }

    /**
     * Boot the model
     */
    protected static function boot()
    {
        parent::boot();

        static::deleting(function ($product) {
            // Delete the image when the product is deleted
            $product->deleteImage();
        });
    }
}