<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;
use Illuminate\Support\Facades\DB;

class Price extends Model
{
    use SoftDeletes;

    protected $table = 'prices';

    protected $fillable = [
        'tenant_id',
        'item_type_code',
        'item_id',
        'client_group_id',
        'purchase_price',
        'processing_cost',
        'loss_rate',
        'margin_rate',
        'sales_price',
        'rounding_rule',
        'rounding_unit',
        'supplier',
        'effective_from',
        'effective_to',
        'note',
        'status',
        'is_final',
        'finalized_at',
        'finalized_by',
        'created_by',
        'updated_by',
        'deleted_by',
    ];

    protected function casts(): array
    {
        return [
            'purchase_price' => 'decimal:4',
            'processing_cost' => 'decimal:4',
            'loss_rate' => 'decimal:2',
            'margin_rate' => 'decimal:2',
            'sales_price' => 'decimal:4',
            'rounding_unit' => 'integer',
            'effective_from' => 'date',
            'effective_to' => 'date',
            'is_final' => 'boolean',
            'finalized_at' => 'datetime',
        ];
    }

    /**
     * 상태 상수
     */
    public const STATUS_DRAFT = 'draft';

    public const STATUS_ACTIVE = 'active';

    public const STATUS_INACTIVE = 'inactive';

    public const STATUS_FINALIZED = 'finalized';

    /**
     * 품목 유형 상수
     */
    public const ITEM_TYPE_PRODUCT = 'PRODUCT';

    public const ITEM_TYPE_MATERIAL = 'MATERIAL';

    /**
     * 반올림 규칙 상수
     */
    public const ROUNDING_ROUND = 'round';

    public const ROUNDING_CEIL = 'ceil';

    public const ROUNDING_FLOOR = 'floor';

    /**
     * 특정 품목의 현재 유효 단가 조회
     */
    public static function getCurrentPrice(
        int $tenantId,
        string $itemTypeCode,
        int $itemId,
        ?int $clientGroupId = null
    ): ?self {
        return static::where('tenant_id', $tenantId)
            ->where('item_type_code', $itemTypeCode)
            ->where('item_id', $itemId)
            ->where(function ($query) use ($clientGroupId) {
                if ($clientGroupId) {
                    $query->where('client_group_id', $clientGroupId)
                        ->orWhereNull('client_group_id');
                } else {
                    $query->whereNull('client_group_id');
                }
            })
            ->where('status', self::STATUS_ACTIVE)
            ->where('effective_from', '<=', now())
            ->where(function ($query) {
                $query->whereNull('effective_to')
                    ->orWhere('effective_to', '>=', now());
            })
            ->orderByRaw('client_group_id IS NULL')  // 고객그룹 지정된 것 우선
            ->orderBy('effective_from', 'desc')
            ->first();
    }

    /**
     * 품목 코드로 현재 유효 판매단가 조회
     * (quote_formula_items.item_code와 연동용)
     */
    public static function getSalesPriceByItemCode(int $tenantId, string $itemCode): float
    {
        // items 테이블에서 품목 코드로 검색 (products + materials 통합 테이블)
        $item = DB::table('items')
            ->where('tenant_id', $tenantId)
            ->where('code', $itemCode)
            ->whereNull('deleted_at')
            ->first();

        if (! $item) {
            return 0;
        }

        $price = static::getCurrentPrice($tenantId, $item->item_type, $item->id);

        return (float) ($price?->sales_price ?? 0);
    }
}