<?php

namespace App\Models;

use App\Models\Concerns\InteractsWithActivityLog;
use Illuminate\Database\Eloquent\Attributes\Appends;
use Illuminate\Database\Eloquent\Attributes\Guarded;
use Illuminate\Database\Eloquent\Casts\Attribute;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\SoftDeletes;

#[Guarded(['id'])]
#[Appends([
    'quantity_formatted',
    'quantity_input',
    'subtotal_formatted',
    'unit_abbreviation',
    'unit_price_formatted',
])]
class PurchaseItem extends Model
{
    // 1. Use Trait
    use HasFactory, InteractsWithActivityLog, SoftDeletes;

    // 2. Casting
    protected function casts(): array
    {
        return [
            'quantity' => 'decimal:4',
            'subtotal' => 'integer',
            'unit_price' => 'integer',
        ];
    }

    // 3. Attribute
    public function quantityFormatted(): Attribute
    {
        return Attribute::make(
            get: function () {
                $formatted = rtrim(rtrim(number_format((float) $this->quantity, 4, ',', '.'), '0'), ',');
                $unitAbbreviation = $this->attributes['unit_abbreviation']
                    ?? $this->rawMaterialPrice?->rawMaterial?->unit?->abbreviation();

                return "{$formatted} {$unitAbbreviation}";
            },
        );
    }

    public function quantityInput(): Attribute
    {
        return Attribute::make(
            get: fn () => rtrim(rtrim(number_format((float) $this->quantity, 4, '.', ''), '0'), '.'),
        );
    }

    public function subtotalFormatted(): Attribute
    {
        return Attribute::make(
            get: fn () => 'Rp '.number_format($this->subtotal, 0, ',', '.'),
        );
    }

    public function unitAbbreviation(): Attribute
    {
        return Attribute::make(
            get: fn () => $this->attributes['unit_abbreviation']
                ?? $this->rawMaterialPrice?->rawMaterial?->unit?->abbreviation(),
        );
    }

    public function unitPriceFormatted(): Attribute
    {
        return Attribute::make(
            get: fn () => 'Rp '.number_format($this->unit_price, 0, ',', '.'),
        );
    }

    // 4. Relation
    public function purchase(): BelongsTo
    {
        return $this->belongsTo(Purchase::class);
    }

    public function rawMaterialPrice(): BelongsTo
    {
        return $this->belongsTo(RawMaterialPrice::class);
    }

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