package modelimpl

import (
	"fmt"
	"strings"
)

// 城轨uid
type CgUid struct {
	// 城市
	city string
	// 线路
	line string
	// 设备编号
	codes []string
	// codestr
	codestr string
	// uid
	idstr string
}

func NewCgUid(city string, line string, codes ...string) *CgUid {
	if city == "" || line == "" {
		panic(fmt.Errorf("创建城轨uid错误: 城市、线路、车站不能为空 city=%s, line=%s", city, line))
	}
	l := len(codes)
	if l == 0 {
		panic(fmt.Errorf("创建城轨uid错误: codes不能为空"))
	}
	codestr := strings.Join(codes, "_")
	elems := []string{city, line, codestr}
	uid := strings.Join(elems, "_")
	return &CgUid{
		city:    city,
		line:    line,
		codes:   codes,
		codestr: codestr,
		idstr:   uid,
	}
}
func (u *CgUid) Id() string {
	return u.idstr
}