<?php

namespace app\common\model;

use think\Model;

/**
 * 身体测量数据模型
 */
class BodyMeasurements extends Model
{
    // 表名
    protected $table = 'fa_body_measurements';
    
    // 开启自动写入时间戳字段
    protected $autoWriteTimestamp = 'int';
    // 定义时间戳字段名
    protected $createTime = 'createtime';
    protected $updateTime = 'updatetime';
    protected $deleteTime = false;

    // 追加属性
    protected $append = [
        'measurement_date_text'
    ];

    /**
     * 关联身体档案
     */
    public function profile()
    {
        return $this->belongsTo('BodyProfile', 'profile_id', 'id', [], 'LEFT')->setEagerlyType(0);
    }

    /**
     * 获取测量日期文本
     */
    public function getMeasurementDateTextAttr($value, $data)
    {
        return $data['measurement_date'] ? date('Y-m-d', $data['measurement_date']) : '';
    }

    /**
     * 设置测量日期
     */
    public function setMeasurementDateAttr($value)
    {
        return is_numeric($value) ? $value : strtotime($value);
    }

    /**
     * 获取所有测量数据的字段映射
     */
    public static function getMeasurementFields($gender = 0)
    {
        $commonFields = [
            'chest' => '胸围',
            'waist' => '腰围',
            'hip' => '臀围',
            'thigh' => '大腿围',
            'calf' => '小腿围',
            'upper_arm' => '上臂围',
            'forearm' => '前臂围',
            'neck' => '颈围',
            'shoulder_width' => '肩宽',
            'inseam' => '内缝长',
            'outseam' => '外缝长',
            'knee' => '膝围',
            'arm_length' => '臂长',
            'wrist' => '腕围',
            'pants_length' => '裤长',
            'shoe_size' => '鞋码',
            'belly_belt' => '肚围',
            'leg_root' => '腿根',
            'ankle' => '脚踝',
            'waist_lower' => '下腰围',
            'mid_waist' => '中腰围',
        ];

        // 女性专用字段
        if ($gender == 2) {
            $commonFields['bust'] = '胸围/乳围';
            $commonFields['underbust'] = '下胸围';
        }

        return $commonFields;
    }

    /**
     * 计算身体比例数据
     */
    public function calculateBodyRatios()
    {
        $profile = $this->profile;
        if (!$profile || $profile->height <= 0) {
            return [];
        }

        $height = $profile->height;
        $ratios = [];

        // 计算各部位与身高的比例
        $measurementFields = [
            'chest' => '胸围比例',
            'waist' => '腰围比例', 
            'hip' => '臀围比例',
            'thigh' => '大腿围比例',
            'shoulder_width' => '肩宽比例'
        ];

        foreach ($measurementFields as $field => $label) {
            if ($this->$field > 0) {
                $ratios[$field] = round(($this->$field / $height) * 100, 2);
            }
        }

        // 计算腰臀比
        if ($this->waist > 0 && $this->hip > 0) {
            $ratios['waist_hip_ratio'] = round($this->waist / $this->hip, 2);
        }

        return $ratios;
    }

    /**
     * 获取理想测量范围建议
     */
    public function getIdealRanges($gender, $height, $weight)
    {
        if ($height <= 0) return [];

        $ranges = [];

        // 根据身高和性别计算理想范围
        if ($gender == 1) { // 男性
            $ranges = [
                'chest' => [
                    'min' => round($height * 0.48, 1),
                    'max' => round($height * 0.52, 1)
                ],
                'waist' => [
                    'min' => round($height * 0.42, 1),
                    'max' => round($height * 0.47, 1)
                ],
                'hip' => [
                    'min' => round($height * 0.51, 1),
                    'max' => round($height * 0.55, 1)
                ]
            ];
        } else { // 女性
            $ranges = [
                'bust' => [
                    'min' => round($height * 0.49, 1),
                    'max' => round($height * 0.53, 1)
                ],
                'waist' => [
                    'min' => round($height * 0.37, 1),
                    'max' => round($height * 0.42, 1)
                ],
                'hip' => [
                    'min' => round($height * 0.52, 1),
                    'max' => round($height * 0.56, 1)
                ]
            ];
        }

        return $ranges;
    }
}