<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Casts\Attribute;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\HasMany;

class Coupon extends Model
{
    public const TYPE_PERCENT = 'percent';
    public const TYPE_FIXED = 'fixed';
    public const TYPES = [self::TYPE_PERCENT, self::TYPE_FIXED];

    public const APPLIES_NEW = 'new';
    public const APPLIES_RENEWAL = 'renewal';
    public const APPLIES_ALL = 'all';
    public const APPLIES_TO = [self::APPLIES_NEW, self::APPLIES_RENEWAL, self::APPLIES_ALL];

    protected $guarded = [];

    protected $casts = [
        'value' => 'integer',
        'max_discount' => 'integer',
        'min_order' => 'integer',
        'usage_limit' => 'integer',
        'per_customer_limit' => 'integer',
        'product_types' => 'array',
        'product_ids' => 'array',
        'billing_cycles' => 'array',
        'starts_at' => 'datetime',
        'ends_at' => 'datetime',
        'is_active' => 'boolean',
    ];

    public static function normalizeCode(string $code): string
    {
        return strtoupper(trim($code));
    }

    protected function code(): Attribute
    {
        return Attribute::set(fn (string $value) => self::normalizeCode($value));
    }

    public function redemptions(): HasMany
    {
        return $this->hasMany(CouponRedemption::class);
    }

    public function activeRedemptions(): HasMany
    {
        return $this->redemptions()->whereNull('released_at');
    }
}