<?php

namespace App\Models;

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

class ClientTier extends Model
{
    protected $fillable = [
        'tier_name',
        'min_purchase_amount',
        'max_purchase_amount',
        'discount_percentage',
        'is_active',
    ];

    protected $casts = [
        'min_purchase_amount' => 'decimal:2',
        'max_purchase_amount' => 'decimal:2',
        'discount_percentage' => 'decimal:2',
        'is_active' => 'boolean',
    ];

    /**
     * Clientes que pertenecen a este nivel
     */
    public function clients(): HasMany
    {
        return $this->hasMany(Client::class, 'tier_id');
    }

    /**
     * Niveles nuevos en el historial
     */
    public function tierHistories(): HasMany
    {
        return $this->hasMany(ClientTierHistory::class, 'new_tier_id');
    }

    /**
     * Niveles antiguos en el historial
     */
    public function oldTierHistories(): HasMany
    {
        return $this->hasMany(ClientTierHistory::class, 'old_tier_id');
    }

    /**
     * Alcance de consulta para niveles activos
     */
    public function scopeActive($query)
    {
        return $query->where('is_active', true);
    }

    /**
     * Verifica si un monto de compra califica para este nivel
     */
    public function qualifies(float $amount): bool
    {
        if (!$this->is_active) {
            return false;
        }

        if ($amount < $this->min_purchase_amount) {
            return false;
        }

        if ($this->max_purchase_amount !== null && $amount > $this->max_purchase_amount) {
            return false;
        }

        return true;
    }
}