<?php

namespace App\Module\Mex\AdminControllers\Helper;

use Dcat\Admin\Grid;

/**
 * Mex模块Grid助手类
 * 
 * 提供通用的Grid列配置方法
 */
class GridHelper
{
    protected Grid $grid;
    protected $controller;

    public function __construct(Grid $grid, $controller = null)
    {
        $this->grid = $grid;
        $this->controller = $controller;
    }

    /**
     * 用户ID列，带链接
     */
    public function columnUserId(string $field = 'user_id', string $label = '用户ID'): Grid\Column
    {
        return $this->grid->column($field, $label)->link(function ($value) {
            return admin_url("users/{$value}");
        });
    }

    /**
     * 商品ID列，带链接
     */
    public function columnItemId(string $field = 'item_id', string $label = '商品ID'): Grid\Column
    {
        return $this->grid->column($field, $label)->link(function ($value) {
            return admin_url("game-items/{$value}");
        });
    }

    /**
     * 订单ID列，带链接
     */
    public function columnOrderId(string $field, string $label): Grid\Column
    {
        return $this->grid->column($field, $label)->link(function ($value) {
            return $value ? admin_url("mex-orders/{$value}") : '-';
        });
    }

    /**
     * 价格列，格式化显示
     */
    public function columnPrice(string $field = 'price', string $label = '价格', int $decimals = 5): Grid\Column
    {
        return $this->grid->column($field, $label)->display(function ($value) use ($decimals) {
            return number_format($value, $decimals);
        });
    }

    /**
     * 金额列，格式化显示
     */
    public function columnAmount(string $field, string $label, int $decimals = 5): Grid\Column
    {
        return $this->grid->column($field, $label)->display(function ($value) use ($decimals) {
            return $value ? number_format($value, $decimals) : '-';
        });
    }

    /**
     * 数量列，格式化显示
     */
    public function columnQuantity(string $field = 'quantity', string $label = '数量'): Grid\Column
    {
        return $this->grid->column($field, $label)->display(function ($value) {
            return number_format($value);
        });
    }

    /**
     * 百分比列
     */
    public function columnPercentage(string $field, string $label, int $decimals = 2): Grid\Column
    {
        return $this->grid->column($field, $label)->display(function ($value) use ($decimals) {
            return number_format($value * 100, $decimals) . '%';
        });
    }

    /**
     * 布尔值列，显示为是/否
     */
    public function columnBoolean(string $field, string $label): Grid\Column
    {
        return $this->grid->column($field, $label)->display(function ($value) {
            return $value ? '是' : '否';
        })->label([
            1 => 'success',
            0 => 'default',
        ]);
    }

    /**
     * 状态列，带颜色标签
     */
    public function columnStatus(string $field, string $label, array $statusMap, array $colorMap = []): Grid\Column
    {
        $column = $this->grid->column($field, $label)->using($statusMap);
        
        if (!empty($colorMap)) {
            $column->label($colorMap);
        }
        
        return $column;
    }

    /**
     * 时间戳列，格式化显示
     */
    public function columnTimestamp(string $field, string $label, string $format = 'Y-m-d H:i:s'): Grid\Column
    {
        return $this->grid->column($field, $label)->display(function ($value) use ($format) {
            return $value ? date($format, $value) : '-';
        });
    }

    /**
     * 日期时间列
     */
    public function columnDatetime(string $field, string $label): Grid\Column
    {
        return $this->grid->column($field, $label)->sortable();
    }

    /**
     * 文本截断列
     */
    public function columnText(string $field, string $label, int $limit = 50): Grid\Column
    {
        return $this->grid->column($field, $label)->limit($limit);
    }

    /**
     * JSON数据列
     */
    public function columnJson(string $field, string $label): Grid\Column
    {
        return $this->grid->column($field, $label)->display(function ($value) {
            if (is_string($value)) {
                $data = json_decode($value, true);
                return $data ? json_encode($data, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE) : $value;
            }
            return json_encode($value, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);
        })->limit(100);
    }

    /**
     * 平均价格计算列
     */
    public function columnAveragePrice(string $amountField, string $quantityField, string $label): Grid\Column
    {
        return $this->grid->column($label)->display(function () use ($amountField, $quantityField) {
            $amount = $this->{$amountField};
            $quantity = $this->{$quantityField};
            
            if ($quantity > 0) {
                $avgPrice = bcdiv($amount, $quantity, 5);
                return number_format($avgPrice, 5);
            }
            return '-';
        });
    }

    /**
     * 净值计算列
     */
    public function columnNetValue(string $positiveField, string $negativeField, string $label, int $decimals = 5): Grid\Column
    {
        return $this->grid->column($label)->display(function () use ($positiveField, $negativeField, $decimals) {
            $positive = $this->{$positiveField};
            $negative = $this->{$negativeField};
            
            if (is_numeric($positive) && is_numeric($negative)) {
                $net = bcsub($positive, $negative, $decimals);
                return number_format($net, $decimals);
            }
            return '-';
        });
    }
}