<?php

namespace app\models;

use Yii;
use app\components\SysConst;

/**
 * This is the model class for table "{{%balance}}".
 *
 * @property int $id ID
 * @property int $cx_mch_id 平台商户ID
 * @property int $scene 场景类型
 * @property int $user_id 用户ID
 * @property float $account_balance 账户余额
 * @property string|null $password 密码
 * @property int $created_at 添加时间
 * @property int $updated_at 更新时间
 * @property int $deleted_at 删除时间
 * @property int $is_delete 是否删除：0=否，1=是
 */
class Balance extends \yii\db\ActiveRecord
{
    const TYPE_INCOME = 1;      //收入
    const TYPE_PAY = 2;         //支出
    
    /**
     * {@inheritdoc}
     */
    public static function tableName()
    {
        return '{{%balance}}';
    }

    /**
     * {@inheritdoc}
     */
    public function rules()
    {
        return [
            [['password'], 'trim',],
            [['cx_mch_id', 'scene', 'user_id', 'created_at', 'updated_at', 'deleted_at', 'is_delete'], 'integer'],
            [['user_id'], 'required'],
            [['account_balance'], 'number'],
            [['password'], 'string', 'max' => 256],
        ];
    }

    /**
     * {@inheritdoc}
     */
    public function attributeLabels()
    {
        return [
            'id' => 'ID',
            'cx_mch_id' => '平台商户ID',
            'scene' => '场景类型',
            'user_id' => '用户ID',
            'account_balance' => '账户余额',
            'password' => '密码',
            'created_at' => '添加时间',
            'updated_at' => '更新时间',
            'deleted_at' => '删除时间',
            'is_delete' => '是否删除：0=否，1=是',
        ];
    }
    
        
    public function beforeSave($insert) {
        if(parent::beforeSave($insert)){
            if($this->isNewRecord){
                $this->created_at = time();
            }
            $this->updated_at = time();
            if($this->is_delete == 1)
                $this->deleted_at = time();            
            return true;
        } else {
            return false;
        }
    }    
    
    /** ----- BALANCE SCENE START ----- */
    
    public static $cxBalanceSceneUserWallet = 0;                    //用户钱包
    
    
    public static function getBalanceSceneLabels()
    {
        return [
            '0' => '钱包'
        ];
    }
    
    public static function getBalanceScene($scene)
    {
        $labels = self::getBalanceSceneLabels();
        return isset($labels[$scene]) ? $labels[$scene] : "未知";        
    }


    /** ----- BALANCE SCENE END ----- */    
    
    /**
     * 用户账户初始化
     * @param integer $user_id 用户ID
     * @param integer $scene 场景类型
     * @param integer $cx_mch_id 平台商户ID
     */
    public static function initBalance($user_id, $scene = 0, $cx_mch_id = 0)
    {
        $model = Balance::findOne([
            'cx_mch_id' => $cx_mch_id,
            'scene' => $scene,
            'user_id' => $user_id,
            'is_delete' => 0
        ]);
        if($model != null)
            return Model::asReturnSuccess();
        $model = new Balance();
        $model->cx_mch_id = $cx_mch_id;
        $model->scene = $scene;
        $model->user_id = $user_id;
        $model->account_balance = 0;
        $model->is_delete = 0;
        if(!$model->save())
            return (new Model())->getModelError($model);
        return Model::asReturnSuccess();
    }
    
    /**
     * 用户账户余额变动
     * @param integer $user_id 用户ID
     * @param integer $type 类型，1=收入，2=支出
     * @param number $money 金额
     * @param string $desc 交易描述
     * @param integer $order_type 订单类型
     * @param string $order_no 订单号
     * @param integer $scene 场景类型
     * @param string $ext 扩展信息（JSON）
     * @param integer $cx_mch_id 平台商户ID
     */    
    public static function logger($user_id, $type, $money, $desc, $order_type, $order_no, $scene = 0, $ext = "", $cx_mch_id = 0)
    {
        //账户余额变动
        $balance = Balance::findOne([
            'cx_mch_id' => $cx_mch_id,
            'scene' => $scene,
            'user_id' => $user_id,
            'is_delete' => 0
        ]);
        if($balance == null){
            $res = self::initBalance($user_id, $scene, $cx_mch_id);
            if($res['code'] != 0)
                return $res;
            return self::logger($user_id, $type, $money, $desc, $order_type, $order_no, $scene, $ext, $cx_mch_id);
        }
        $money = sprintf("%.2f",$money);
        $before_account_balance = $balance->account_balance;
        if($type == self::TYPE_INCOME){
            $balance->account_balance += $money;
            $after_account_balance = $before_account_balance + $money;
        }
        if($type == self::TYPE_PAY){
            $balance->account_balance -= $money;
            $after_account_balance = $before_account_balance - $money;
            //账户余额不够情况
            if($balance->account_balance < 0){
                $scene_cn = self::getBalanceScene($scene);
                return Model::asReturnError("{$scene_cn}余额不足");
            }
        }
        if(!$balance->save())
            return (new Model())->getModelError($balance);
        
        //账户变动日志
        $balance_log = new BalanceLog();
        $balance_log->cx_mch_id = $cx_mch_id;
        $balance_log->scene = $scene;
        $balance_log->type = $type;
        $balance_log->user_id = $user_id;
        $balance_log->money = $money;
        $balance_log->before_account_balance = $before_account_balance;
        $balance_log->after_account_balance = $after_account_balance;
        $balance_log->desc = $desc;
        $balance_log->order_type = $order_type;
        $balance_log->order_no = $order_no;
        $balance_log->ext = $ext;
        if(!$balance_log->save()){
            return (new Model())->getModelError($balance_log);
        }
        return Model::asReturnSuccess();
    }
    
    
    /**
     * 用户钱包余额变动
     * @param integer $user_id 用户ID
     * @param integer $type 类型，1=收入，2=支出
     * @param number $money 金额
     * @param string $desc 交易描述
     * @param integer $order_type 订单类型
     * @param string $order_no 订单号
     * @param integer $scene 场景类型
     * @param string $ext 扩展信息（JSON）
     * @param integer $cx_mch_id 平台商户ID
     */ 
    public static function userWalletLog($user_id, $type, $money, $desc, $order_type, $order_no, $ext = "", $cx_mch_id = 0)
    {
        $scene = self::$cxBalanceSceneUserWallet;
        return self::logger($user_id, $type, $money, $desc, $order_type, $order_no, $scene, $ext, $cx_mch_id);
    }
    
    
}