/**
 * @Author:  jager
 * @Email:   lhj168os@gmail.com
 * @File:    fund
 * @Date:    2021/12/1 3:05 下午
 * @package: fund
 * @Version: v1.0.0
 *
 * @Description:
 *
 */

package fund

import (
	"encoding/json"
	"fmt"
	"github.com/jageros/hawox/errcode"
	"github.com/jageros/hawox/httpc"
	"github.com/jageros/hawox/logx"
	"regexp"
	"strconv"
	"sync"
)

const (
	baseUrl = "http://fundgz.1234567.com.cn/js/%s.js"
)

var (
	jsonStr = regexp.MustCompile(`{(.*?)}`)

	fds = &funds{fdsMap: map[string]*fund{}}
)

type fund struct {
	Code        string `json:"fundcode"`
	FName       string `json:"name"`
	UnitVal     string `json:"dwjz"`
	EstimateVal string `json:"gsz"`
	RisePer     string `json:"gszzl"`
	UpdateTime  string `json:"gztime"`
}

func (f *fund) Name() string {
	return f.FName
}

func (f *fund) Update() error {
	url := fmt.Sprintf(baseUrl, f.Code)
	result, err := httpc.Request(httpc.GET, url, httpc.FORM, nil, nil)
	if err != nil {
		return err
	}
	ss := jsonStr.FindStringSubmatch(string(result))
	if len(ss) <= 0 {
		return errcode.New(404, "找不到基金："+f.Code)
	}
	ff := &fund{}
	err = json.Unmarshal([]byte(ss[0]), ff)
	if err == nil {
		f.FName = ff.FName
		f.UnitVal = ff.UnitVal
		f.EstimateVal = ff.EstimateVal
		f.RisePer = ff.RisePer
		f.UpdateTime = ff.UpdateTime
	}
	return err
}

func (f *fund) Msg() string {
	var rise string
	last, err1 := strconv.ParseFloat(f.UnitVal, 64)
	cur, err2 := strconv.ParseFloat(f.EstimateVal, 64)
	if err1 == nil && err2 == nil {
		rise = fmt.Sprintf("%.5f", cur-last)
	}
	msg := fmt.Sprintf(msgTemplate, f.FName, f.UpdateTime, f.UnitVal, f.EstimateVal, rise, f.RisePer)
	return msg
}

type funds struct {
	fdsMap map[string]*fund
	mx     sync.RWMutex
}

func (fs *funds) getFund(code string) *fund {
	fs.mx.RLock()
	defer fs.mx.RUnlock()
	if fd, ok := fs.fdsMap[code]; ok {
		return fd
	}
	return nil
}

func (fs *funds) addFund(fd *fund) {
	fs.mx.Lock()
	defer fs.mx.Unlock()
	fs.fdsMap[fd.Code] = fd
}

func Clear() {
	fds.mx.Lock()
	defer fds.mx.Unlock()
	fds = &funds{
		fdsMap: map[string]*fund{},
	}
}

func FundsMsg(codes ...string) string {
	if len(codes) <= 0 {
		return ""
	}
	//var msg = "基金定投估值 >>>\n"
	msg := ""
	for _, code := range codes {
		fd := fds.getFund(code)
		if fd == nil {
			fd_, err := NewFund(code)
			if err == nil {
				fd = fd_
				fds.addFund(fd_)
			} else {
				logx.Error(err)
				continue
			}
		}
		msg += fd.Msg()
	}
	return msg
}

func NewFund(code string) (*fund, error) {
	url := fmt.Sprintf(baseUrl, code)
	result, err := httpc.Request(httpc.GET, url, httpc.FORM, nil, nil)
	if err != nil {
		return nil, err
	}
	ss := jsonStr.FindStringSubmatch(string(result))
	if len(ss) <= 0 {
		return nil, errcode.New(404, "找不到基金："+code)
	}
	ff := &fund{}
	err = json.Unmarshal([]byte(ss[0]), ff)
	return ff, err
}

const msgTemplate = `%s
更新时间：%s
单位净值：%s  估算净值：%s
估算涨幅：(%s) %s%%

`

type fundArg struct {
	codes []string
}

func NewFundArg(codes ...string) *fundArg {
	return &fundArg{
		codes: codes,
	}
}

func (fa *fundArg) Arg(openid string) map[string]interface{} {
	msg := FundsMsg(fa.codes...)
	if msg == "" {
		return nil
	}
	arg := map[string]interface{}{
		"touser":      openid,
		"template_id": "SQXWp3RiYySb2GYG-vMYDsSIm-KZNM9szVpFOryUQGQ",
		"data": map[string]interface{}{
			"keyword": map[string]interface{}{
				"value": msg,
				"color": "#173177",
			},
		},
	}
	return arg
}