package client

import (
	"encoding/json"
	"fmt"
	"strings"
	"time"
)

type WeGetTokenRes struct {
	AccessToken string `json:"access_token"`
	ExpiresIn   int    `json:"expires_in"`
}

func WeGetToken() (token string, e error) {
	gotRes, err := Get(GetAccessTokenURL, nil, WeChatGetAccessTokenReq(1))
	if err != nil {
		return "", err
	}
	var body WeGetTokenRes
	if e = json.Unmarshal(gotRes, &body); e != nil {
		return
	}
	token = body.AccessToken
	return
}

type WeSendMessageReq map[string]WeSendMessageItemReq

type WeSendMessageItemReq struct {
	Value string `json:"value"`
}

func WeSendMessage(openID, templateID string, message WeSendMessageReq, token string) (e error) {
	if len(token) == 0 {
		if token, e = WeGetToken(); e != nil {
			return
		}
	}
	gotRes, err := Post(strings.ReplaceAll(SendMessageURL, "ACCESS_TOKEN", token), nil, map[string]any{
		"template_id":       templateID,
		"touser":            openID,
		"data":              message,
		"miniprogram_state": "formal", // developer为开发版；trial为体验版；formal为正式版；默认为正式版
		"lang":              "zh_CN",  // 进入小程序查看”的语言类型，支持zh_CN(简体中文)、en_US(英文)、zh_HK(繁体中文)、zh_TW(繁体中文)，默认为 zh_CN
	})
	if err != nil {
		return err
	}
	fmt.Printf("%s\n", string(gotRes))
	return
}

func WeSendNoticeTakeOrder(openID, company, driver, vehicel string, date time.Time) error {
	const tid = "Ff5tDsIlBy-t51Usxh_oBvge9WbMbBFVKI020hIpWcA"
	return WeSendMessage(openID, tid, messageNoticeTakeOrder(company, driver, vehicel, date), "")
}

// messageBookReminder 预约提醒消息
func messageNoticeTakeOrder(company, driver, vehicel string, date time.Time) WeSendMessageReq {
	return WeSendMessageReq{
		"thing1":      WeSendMessageItemReq{Value: company},           // 公司名称
		"thing2":      WeSendMessageItemReq{Value: driver},            // 接单司机
		"car_number3": WeSendMessageItemReq{Value: vehicel},           // 车牌号
		"time4":       WeSendMessageItemReq{Value: StrFromTime(date)}, // 接单时间
	}
}

const (
	TimeFormat = "2006-01-02 15:04:05"
	DateFormat = "2006-01-02"
)

func StrFromTime(t time.Time) string {
	return t.Format(TimeFormat)
}