<?php
// +----------------------------------------------------------------------
// | Niucloud-admin 企业快速开发的多应用管理平台
// +----------------------------------------------------------------------

namespace app\service\api\student;

use app\model\physical_test\PhysicalTest;
use app\model\customer_resources\CustomerResources;
use app\model\student\Student;
use core\base\BaseService;
use core\exception\CommonException;

/**
 * 体测数据服务类
 */
class PhysicalTestService extends BaseService
{
    /**
     * 获取学员体测记录列表
     * @param array $data
     * @return array
     */
    public function getPhysicalTestList($data)
    {
        $studentId = $data['student_id'];

        $page = $data['page'] ?? 1;
        $limit = $data['limit'] ?? 20;

        $list = (new PhysicalTest())
            ->where('student_id', $studentId)
            ->field('id,student_id,height,weight,physical_test_report,created_at,updated_at')
            ->order('created_at desc')
            ->page($page, $limit)
            ->select()
            ->toArray();

        // 处理数据
        foreach ($list as &$item) {
            $item['test_date'] = date('Y-m-d', strtotime($item['created_at']));
            $item['height_text'] = $item['height'] . 'cm';
            $item['weight_text'] = $item['weight'] . 'kg';
            
            // 处理体测报告PDF文件
            $item['has_report'] = !empty($item['physical_test_report']);
            $item['report_files'] = [];
            
            if ($item['physical_test_report']) {
                $files = explode(',', $item['physical_test_report']);
                foreach ($files as $file) {
                    if ($file) {
                        $item['report_files'][] = [
                            'name' => '体测报告',
                            'url' => get_image_url($file),
                            'path' => $file
                        ];
                    }
                }
            }
        }

        $total = (new PhysicalTest())->where('student_id', $studentId)->count();

        return [
            'list' => $list,
            'total' => $total,
            'page' => $page,
            'limit' => $limit,
            'pages' => ceil($total / $limit)
        ];
    }

    /**
     * 获取体测详情
     * @param int $testId
     * @return array
     */
    public function getPhysicalTestDetail($testId)
    {
        $physicalTest = (new PhysicalTest())->where('id', $testId)->find();
        
        if (!$physicalTest) {
            throw new CommonException('体测记录不存在');
        }

        $data = $physicalTest->toArray();
        
        // 格式化数据
        $data['test_date'] = date('Y-m-d', strtotime($data['created_at']));
        $data['height_text'] = $data['height'] . 'cm';
        $data['weight_text'] = $data['weight'] . 'kg';
        
        // 处理各项体测指标
        $indicators = [
            'seated_forward_bend' => ['name' => '坐位体前屈', 'unit' => 'cm'],
            'sit_ups' => ['name' => '仰卧卷腹', 'unit' => '次'],
            'push_ups' => ['name' => '九十度仰卧撑', 'unit' => '次'],
            'flamingo_balance' => ['name' => '火烈鸟平衡测试', 'unit' => 's'],
            'thirty_sec_jump' => ['name' => '三十秒双脚连续跳', 'unit' => '次'],
            'standing_long_jump' => ['name' => '立定跳远', 'unit' => 'cm'],
            'agility_run' => ['name' => '4乘10m灵敏折返跑', 'unit' => 's'],
            'balance_beam' => ['name' => '走平衡木', 'unit' => 's'],
            'tennis_throw' => ['name' => '网球掷远', 'unit' => 'm'],
            'ten_meter_shuttle_run' => ['name' => '十米往返跑', 'unit' => 's']
        ];

        $data['indicators'] = [];
        foreach ($indicators as $key => $info) {
            if ($data[$key] !== null && $data[$key] !== '') {
                $data['indicators'][] = [
                    'name' => $info['name'],
                    'value' => $data[$key],
                    'unit' => $info['unit'],
                    'value_text' => $data[$key] . $info['unit']
                ];
            }
        }

        // 处理体测报告文件
        $data['report_files'] = [];
        if ($data['physical_test_report']) {
            $files = explode(',', $data['physical_test_report']);
            foreach ($files as $file) {
                if ($file) {
                    $data['report_files'][] = [
                        'name' => '体测报告',
                        'url' => get_image_url($file),
                        'path' => $file,
                        'type' => 'pdf'
                    ];
                }
            }
        }

        return $data;
    }

    /**
     * 获取体测趋势数据（身高体重变化）
     * @param array $data
     * @return array
     */
    public function getPhysicalTestTrend($data)
    {
        $studentId = $data['student_id'];
        $months = $data['months'] ?? 12;

        // 获取指定月份内的体测数据
        $startDate = date('Y-m-d', strtotime("-{$months} months"));
        
        $trendData = (new PhysicalTest())
            ->where('student_id', $studentId)
            ->where('created_at', '>=', $startDate)
            ->field('height,weight,created_at')
            ->order('created_at asc')
            ->select()
            ->toArray();

        $heightData = [];
        $weightData = [];
        $dates = [];

        foreach ($trendData as $item) {
            $date = date('Y-m', strtotime($item['created_at']));
            $dates[] = $date;
            $heightData[] = [
                'date' => $date,
                'value' => (float)$item['height']
            ];
            $weightData[] = [
                'date' => $date,
                'value' => (float)$item['weight']
            ];
        }

        // 计算增长情况
        $heightGrowth = 0;
        $weightGrowth = 0;
        
        if (count($heightData) >= 2) {
            $heightGrowth = end($heightData)['value'] - $heightData[0]['value'];
            $weightGrowth = end($weightData)['value'] - $weightData[0]['value'];
        }

        return [
            'height_data' => $heightData,
            'weight_data' => $weightData,
            'dates' => array_unique($dates),
            'growth' => [
                'height' => round($heightGrowth, 1),
                'weight' => round($weightGrowth, 1),
                'height_text' => ($heightGrowth >= 0 ? '+' : '') . round($heightGrowth, 1) . 'cm',
                'weight_text' => ($weightGrowth >= 0 ? '+' : '') . round($weightGrowth, 1) . 'kg'
            ],
            'data_count' => count($trendData),
            'months' => $months
        ];
    }

    /**
     * PDF转图片分享
     * @param int $testId
     * @return array
     */
    public function convertPdfToImage($testId)
    {
        $physicalTest = (new PhysicalTest())->where('id', $testId)->find();
        
        if (!$physicalTest) {
            throw new CommonException('体测记录不存在');
        }

        // 获取第一个PDF文件
        $files = explode(',', $physicalTest['physical_test_report']);
        $pdfFile = trim($files[0]);
        
        if (!$pdfFile) {
            throw new CommonException('PDF文件路径无效');
        }

        // 构建完整文件路径
        $pdfPath = public_path() . $pdfFile;
        
        if (!file_exists($pdfPath)) {
            throw new CommonException('PDF文件不存在');
        }

        try {
            // 使用Imagick将PDF转换为图片
            if (!extension_loaded('imagick')) {
                throw new CommonException('系统不支持PDF转图片功能');
            }

            $imagick = new \Imagick();
            $imagick->setResolution(150, 150);
            $imagick->readImage($pdfPath . '[0]'); // 只转换第一页
            $imagick->setImageFormat('jpeg');
            $imagick->setImageCompressionQuality(85);

            // 生成图片文件名
            $imageName = 'physical_test_' . $testId . '_' . time() . '.jpg';
            $imagePath = 'uploads/share/' . date('Y/m/d') . '/' . $imageName;
            $fullImagePath = public_path() . $imagePath;

            // 确保目录存在
            $dir = dirname($fullImagePath);
            if (!is_dir($dir)) {
                mkdir($dir, 0755, true);
            }

            // 保存图片
            $imagick->writeImage($fullImagePath);
            $imagick->clear();
            $imagick->destroy();

            return [
                'image_url' => get_image_url($imagePath),
                'image_path' => $imagePath,
                'pdf_url' => get_image_url($pdfFile),
                'message' => 'PDF转换为图片成功，可以分享给朋友了'
            ];

        } catch (\Exception $e) {
            throw new CommonException('PDF转图片失败：' . $e->getMessage());
        }
    }

}