package orders

import (
	"encoding/json"
	"errors"
	"sync"
	"time"

	"github.com/qit-team/snow-core/db"
)

var (
	once sync.Once
	m    *ordersModel
)

/**
 * Orders
 */
type Orders struct {
	Id         int64 `xorm:"pk autoincr"` //注：使用getOne 或者ID() 需要设置主键
	OrderNo    string
	MerchantId int64
	ProductId  int64

	OutTradeNo      string
	RechargeAccount string
	AccountType     int64
	Number          int64
	NotifyUrl       string
	ExtendParameter string

	Status         int64
	TransferStatus int64
	FailReason     string
	CreatedAt      time.Time `xorm:"created"`
}

func (o *Orders) MarshalBinary() ([]byte, error) {
	return json.Marshal(o)
}

/**
 * 表名规则
 * @wiki http://gobook.io/read/github.com/go-xorm/manual-zh-CN/chapter-02/3.tags.html
 */
func (m *Orders) TableName() string {
	return "orders"
}

/**
 * 私有化，防止被外部new
 */
type ordersModel struct {
	db.Model //组合基础Model，集成基础Model的属性和方法
}

// 单例模式
func GetInstance() *ordersModel {
	once.Do(func() {
		m = new(ordersModel)
		//m.DiName = "" //设置数据库实例连接，默认db.SingletonMain
	})
	return m
}

/**
 * 查询主键ID的记录
 * @param id 主键ID
 * @return has 是否有记录
 * @return err 错误信息
 * @return orders 查询结果
 */
func (m *ordersModel) GetById(id int64) (orders *Orders, has bool, err error) {
	orders = &Orders{}
	has, err = m.GetDb().ID(id).Get(orders)
	if err != nil || !has {
		orders = nil
	}
	return
}

func (m *ordersModel) GetByOutTradeNo(out_trade_no string, merchant_id int64) (orders *Orders, has bool, err error) {
	orders = &Orders{}
	has, err = m.GetDb().Where("out_trade_no = ? and merchant_id = ?", out_trade_no, merchant_id).Get(orders)
	if err != nil || !has {
		orders = nil
	}
	return
}

func (m *ordersModel) Search(
	id int64,
	order_no string,
	merchant_id int64,
	product_id int64,
	out_trade_no string,
	recharge_account string,
	account_type int64,

	status int64,
	transfer_status int64,
	startTime string,
	endTime string,
	limit int,
	page int) (orders []*Orders, err error) {
	orders = make([]*Orders, 0)
	sql := "1=1"
	var args []interface{}
	if id != 0 {
		sql += " and id = ?"
		args = append(args, id)
	}
	if order_no != "" {
		sql += " and order_no = ?"
		args = append(args, order_no)
	}
	if merchant_id != 0 {
		sql += " and merchant_id = ?"
		args = append(args, merchant_id)
	}
	if product_id != 0 {
		sql += " and product_id = ?"
		args = append(args, product_id)
	}
	if out_trade_no != "" {
		sql += " and out_trade_no = ?"
		args = append(args, out_trade_no)
	}
	if recharge_account != "" {
		sql += " and recharge_account = ?"
		args = append(args, recharge_account)
	}
	if account_type != 0 {
		sql += " and account_type = ?"
		args = append(args, recharge_account)
	}
	if status != 0 {
		sql += " and status = ?"
		args = append(args, status)
	}
	if transfer_status != 0 {
		sql += " and transfer_status = ?"
		args = append(args, transfer_status)
	}
	if startTime != "" && endTime != "" {
		sql += " and created_at >= ? and created_at <= ?"
		args = append(args, startTime, endTime)
	}
	err = m.GetDb().Where(sql, args...).OrderBy("created_at desc").Limit(limit, page).Find(&orders)
	return
}

func (m *ordersModel) CountAll(
	id int64,
	order_no string,
	merchant_id int64,
	product_id int64,
	out_trade_no string,
	recharge_account string,
	account_type int64,

	status int64,
	transfer_status int64,
	startTime string,
	endTime string,
) (res int64, err error) {
	sql := "1=1"
	var args []interface{}
	if id != 0 {
		sql += " and id = ?"
		args = append(args, id)
	}
	if order_no != "" {
		sql += " and order_no = ?"
		args = append(args, order_no)
	}
	if merchant_id != 0 {
		sql += " and merchant_id = ?"
		args = append(args, merchant_id)
	}
	if product_id != 0 {
		sql += " and merchant_id = ?"
		args = append(args, product_id)
	}
	if out_trade_no != "" {
		sql += " and out_trade_no = ?"
		args = append(args, out_trade_no)
	}
	if recharge_account != "" {
		sql += " and recharge_account = ?"
		args = append(args, recharge_account)
	}
	if account_type != 0 {
		sql += " and account_type = ?"
		args = append(args, recharge_account)
	}
	if status != 0 {
		sql += " and status = ?"
		args = append(args, status)
	}
	if transfer_status != 0 {
		sql += " and transfer_status = ?"
		args = append(args, transfer_status)
	}
	if startTime != "" && endTime != "" {
		sql += " and created_at >= ? and created_at <= ?"
		args = append(args, startTime, endTime)
	}
	res, err = m.GetDb().Where(sql, args...).Table("orders").Count()
	return
}

func (m *ordersModel) Create(orders *Orders) (affected int64, err error) {
	orders.CreatedAt = time.Now()
	affected, err = m.GetDb().Insert(orders)
	return
}

func (m *ordersModel) Update(orders *Orders) (affected int64, err error) {
	affected, err = m.GetDb().ID(orders.Id).Update(orders)
	return
}

func (m *ordersModel) Delete(id int64) (affected int64, err error) {
	affected, err = m.GetDb().ID(id).Delete(&Orders{})
	return
}

func (m *ordersModel) GetIdleOrder() (orders *Orders, has bool, err error) {
	orders = &Orders{}

	session := m.GetDb().NewSession()
	defer session.Close()
	// add Begin() before any action
	if err = session.Begin(); err != nil {
		orders = nil
		return
	}

	has, err = session.Where("transfer_status = 3").Limit(1).Get(orders)
	if err != nil || !has {
		orders = nil
		return
	}
	orders.TransferStatus = 7 // 1.成功 2.充值中 3. 等待充值 4.充值失败 5.异常需要人工处理 6.取消订单 7.订单入队
	affected, err := session.ID(orders.Id).Where("transfer_status = 3").Update(orders)
	if err != nil || affected == 0 {
		orders = nil
		return
	}
	err = session.Commit()
	return
}

func (m *ordersModel) OrderOutQueue(orderId int64) (err error) {
	orders := &Orders{}

	session := m.GetDb().NewSession()
	defer session.Close()
	// add Begin() before any action
	if err = session.Begin(); err != nil {
		orders = nil
		return
	}

	orders = &Orders{}
	has, err := session.ID(orderId).Get(orders)
	if err != nil || !has {
		orders = nil
		return
	}

	if orders.TransferStatus != 7 {
		err = errors.New("订单已取消或者未在队列中")
		return
	}

	orders.TransferStatus = 2 // 1.成功 2.充值中 3. 等待充值 4.充值失败 5.异常需要人工处理 6.取消订单 7.订单入队
	affected, err := session.ID(orders.Id).Where("transfer_status = 7").Update(orders)
	if err != nil || affected == 0 {
		orders = nil
		return
	}
	err = session.Commit()
	return
}

func (m *ordersModel) CancelOrder(orderId int64) (affected int64, err error) {
	orders := &Orders{}

	session := m.GetDb().NewSession()
	defer session.Close()
	// add Begin() before any action
	if err = session.Begin(); err != nil {
		orders = nil
		return
	}

	orders = &Orders{}
	has, err := session.ID(orderId).Get(orders)
	if err != nil || !has {
		orders = nil
		return
	}

	orders.Status = 5
	orders.TransferStatus = 6 // 1.成功 2.充值中 3. 等待充值 4.充值失败 5.异常需要人工处理 6.取消订单 7.订单入队
	orders.FailReason = "订单取消"
	affected, err = session.ID(orders.Id).Where("transfer_status not in (1,2,4,5,6)").Update(orders)
	if err != nil || affected == 0 {
		err = errors.New("订单正在充值或者已经完成")
		orders = nil
		return
	}
	err = session.Commit()
	return
}

func (m *ordersModel) SetDealingOrder(orders *Orders) (affected int64, err error) {

	session := m.GetDb().NewSession()
	defer session.Close()
	// add Begin() before any action
	if err = session.Begin(); err != nil {
		orders = nil
		return
	}

	has, err := session.Where("id = ? and merchant_id = ? and product_id = ? and transfer_status = 2",
		orders.Id, orders.MerchantId, orders.ProductId).Get(&Orders{})
	if err != nil || !has {
		orders = nil
		return
	}
	// 1.成功 2.充值中 3. 等待充值 4.充值失败 5.异常需要人工处理
	affected, err = session.ID(orders.Id).Where("transfer_status = 2").Update(orders)
	if err != nil || affected == 0 {
		orders = nil
		return
	}
	err = session.Commit()
	return
}