<?php

namespace App\Models;

use App\User;
use Carbon\Carbon;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\SoftDeletes;

/**
 * Vorlage (Blueprint) für neue Angebote — stellt Default-Texte und eine
 * Default-Positionsliste (`default_items`, JSON) bereit. Beim Anlegen
 * eines neuen Angebots über eine Vorlage werden diese Defaults in die
 * erste OfferVersion kopiert.
 *
 * @property int            $id
 * @property int|null       $branch_id
 * @property string         $name
 * @property string|null    $description
 * @property string|null    $default_headline
 * @property string|null    $default_intro
 * @property string|null    $default_itinerary
 * @property string|null    $default_closing
 * @property array|null     $default_items
 * @property bool           $is_active
 * @property int            $created_by
 * @property Carbon         $created_at
 * @property Carbon         $updated_at
 * @property Carbon|null    $deleted_at
 * @property-read Branch|null $branch
 * @property-read User       $createdBy
 */
class OfferTemplate extends Model
{
    use HasFactory, SoftDeletes;

    protected $connection = 'mysql';
    protected $table = 'offer_templates';

    protected $fillable = [
        'branch_id',
        'name',
        'description',
        'default_headline',
        'default_intro',
        'default_itinerary',
        'default_closing',
        'default_items',
        'is_active',
        'created_by',
    ];

    protected $casts = [
        'branch_id'     => 'int',
        'created_by'    => 'int',
        'is_active'     => 'bool',
        'default_items' => 'array',
    ];

    public function branch(): BelongsTo
    {
        return $this->belongsTo(Branch::class, 'branch_id');
    }

    public function createdBy(): BelongsTo
    {
        return $this->belongsTo(User::class, 'created_by');
    }

    public function scopeActive(Builder $query): Builder
    {
        return $query->where('is_active', true);
    }

    public function scopeForBranch(Builder $query, ?int $branchId): Builder
    {
        if ($branchId === null) {
            return $query;
        }
        return $query->where(function (Builder $q) use ($branchId) {
            $q->whereNull('branch_id')->orWhere('branch_id', $branchId);
        });
    }
}