package main

import (
	context "context"
)

// NameCode 省份地区的结构
type NameCode struct {
	Name  string
	Code  string
	Child []*NameCode
}

var province = &KeyList{}

type provinceserver struct {
}

func (ps *provinceserver) Province(ctx context.Context, req *Request) (*NameCodeReply, error) {
	reply := &NameCodeReply{}

	nc := GetRandomKeyBySlice(province.GetKeys()).(NameCode)
	reply.Name = nc.Name
	reply.Code = nc.Code

	return reply, nil
}

func (ps *provinceserver) Area(ctx context.Context, req *Request) (*NameCodeReply, error) {
	reply := &NameCodeReply{}

	nc := GetRandomKeyBySlice(province.GetKeys()).(NameCode)
	areanc := GetRandomKeyBySlice(nc.Child).(*NameCode)

	reply.Name = areanc.Name
	reply.Code = areanc.Code

	return reply, nil
}

func (ps *provinceserver) City(ctx context.Context, req *Request) (*NameCodeReply, error) {
	reply := &NameCodeReply{}

	nc := GetRandomKeyBySlice(province.GetKeys()).(NameCode)
	areanc := GetRandomKeyBySlice(nc.Child).(*NameCode)
	citync := GetRandomKeyBySlice(areanc.Child).(*NameCode)

	reply.Name = citync.Name
	reply.Code = citync.Code

	return reply, nil
}

func (ps *provinceserver) AreaParent(ctx context.Context, req *Request) (*NameCodeParentReply, error) {
	reply := &NameCodeParentReply{}

	nc := GetRandomKeyBySlice(province.GetKeys()).(NameCode)

	parentReply := &NameCodeParentReply{}
	parentReply.Name = nc.Name
	parentReply.Code = nc.Code

	areanc := GetRandomKeyBySlice(nc.Child).(*NameCode)
	reply.Name = areanc.Name
	reply.Code = areanc.Code
	reply.Parent = parentReply

	return reply, nil
}

func (ps *provinceserver) CityParent(ctx context.Context, req *Request) (*NameCodeParentReply, error) {
	reply := &NameCodeParentReply{}

	nc := GetRandomKeyBySlice(province.GetKeys()).(NameCode)

	parentReply := &NameCodeParentReply{}
	parentReply.Name = nc.Name
	parentReply.Code = nc.Code

	areanc := GetRandomKeyBySlice(nc.Child).(*NameCode)
	areaReply := &NameCodeParentReply{}
	areaReply.Name = areanc.Name
	areaReply.Code = areanc.Code
	areaReply.Parent = parentReply

	citync := GetRandomKeyBySlice(areanc.Child).(*NameCode)
	reply.Name = citync.Name
	reply.Code = citync.Code
	reply.Parent = areaReply

	return reply, nil
}