nongchang
/
kknongchang_2506


			
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							<?php

namespace App\Module\Farm\AdminControllers\Metrics;

use Dcat\Admin\Widgets\Metrics\Line;
use Illuminate\Http\Request;
use App\Module\Farm\Models\FarmDailyStats;
use Carbon\Carbon;

/**
 * 农场土地类型趋势图 - 多线折线图
 * 
 * 参考UCore\DcatAdmin\Metrics\Examples\NewUsersDou实现
 * 每个土地类型一条线，支持时间范围选择
 */
class FarmLandTrendChart extends Line
{
    /**
     * 图表默认高度
     *
     * @var int
     */
    protected $chartHeight = 200;

    /**
     * 土地类型名称映射
     */
    protected $landTypeNames = [
        1 => '普通土地',
        2 => '红土地',
        3 => '黑土地',
        4 => '金色特殊土地',
        5 => '蓝色特殊土地',
        6 => '紫色特殊土地',
    ];

    /**
     * 初始化卡片内容
     *
     * @return void
     */
    protected function init()
    {
        parent::init();

        $this->title('土地类型趋势图');
        $this->dropdown([
            '7' => '最近7天',
            '15' => '最近15天',
            '30' => '最近30天',
        ]);
    }

    /**
     * 处理请求，获取数值
     *
     * @param Request $request
     *
     * @return mixed|void
     */
    public function handle(Request $request)
    {
        $days = $request->get('option', '7');
        
        // 获取指定天数的统计数据
        $stats = FarmDailyStats::where('stats_date', '>=', Carbon::now()->subDays($days))
            ->orderBy('stats_date', 'asc')
            ->get();

        if ($stats->isEmpty()) {
            // 如果没有数据，显示提示
            $this->withContent('暂无数据');
            $this->withChart([]);
            return;
        }

        // 准备图表数据
        $chartData = [];
        $totalLands = 0;

        // 遍历每种土地类型
        for ($type = 1; $type <= 6; $type++) {
            $field = "land_type_{$type}";
            $typeData = [];
            $hasData = false;

            foreach ($stats as $stat) {
                $value = $stat->$field ?? 0;
                $typeData[] = $value;
                if ($value > 0) {
                    $hasData = true;
                }
            }

            // 只添加有数据的土地类型
            if ($hasData) {
                $chartData[$this->landTypeNames[$type]] = $typeData;
                $totalLands += array_sum($typeData);
            }
        }

        // 计算总土地数（取最新一天的数据）
        $latestStats = $stats->last();
        $currentTotal = 0;
        for ($type = 1; $type <= 6; $type++) {
            $field = "land_type_{$type}";
            $currentTotal += $latestStats->$field ?? 0;
        }

        // 设置卡片内容
        $this->withContent($currentTotal . '块');
        
        // 设置图表数据
        $this->withChart($chartData);
    }


    /**
     * 设置卡片内容
     *
     * @param string $content
     *
     * @return $this
     */
    public function withContent($content)
    {
        return $this->content(
            <<<HTML
<div class="d-flex justify-content-between align-items-center mt-1" style="margin-bottom: 2px">
    <h2 class="ml-1 font-lg-1">{$content}</h2>
    <span class="mb-0 mr-1 text-80">总土地数</span>
</div>
HTML
        );
    }
}