<?php

namespace Modules\Frontend\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Modules\Authentication\Models\User;

class Coupon extends Model
{
    protected $fillable = [
        'restaurant_id',
        'user_id',
        'name',
        'added_by',
        'discount_type',
        'coupon_type',
        'amount',
        'valid_from',
        'valid_to',
        'usage_limit',
        'max_uses_per_customer',
        'min_order_amount',
        'image',
        'source',
        'status',
        'created_at',
        'updated_at',
        'deleted_at',
    ];

    protected $casts = [
        'amount' => 'decimal:2',
        'min_order_amount' => 'decimal:2',
        'valid_from' => 'datetime',
        'valid_to' => 'datetime',
        'status' => 'integer',
    ];

    public const TABLE_NAME = 'coupons';

    protected $table = self::TABLE_NAME;

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

    public function usages(): HasMany
    {
        return $this->hasMany(CouponUsage::class, 'coupon_id');
    }

    // Scopes
    public function scopeActive($query): mixed
    {
        return $query->where('status', 1)
            ->where(function ($q) {
                $q->whereNull('valid_from')->orWhere('valid_from', '<=', now());
            })
            ->where(function ($q) {
                $q->whereNull('valid_to')->orWhere('valid_to', '>=', now());
            });
    }

    // Helper: Calculate discount for an order
    public function calculateDiscount(float $orderTotal): float
    {
        if ($this->discount_type === 'fixed') {
            return min($this->amount, $orderTotal);
        }

        if ($this->discount_type === 'percentage') {
            return round($orderTotal * ($this->amount / 100), 2);
        }

        if ($this->discount_type === 'free_delivery') {
            return 0; // discount only applies to delivery
        }

        return 0;
    }
}