package main

import (
	"fmt"

	"github.com/julienschmidt/httprouter"
)

func init() {
	router.GET("/api/ips", apiHandler(showIPs))
	router.GET("/api/students/:sid/ips", apiHandler(studentHandler(showStudentIPs)))
}

func (s Student) IPSuffix() int64 {
	return s.Id * 5 + 10
}

func showIPs(_ httprouter.Params, body []byte) (interface{}, error) {
	r := make(map[string]map[string]string)

	students, err := getStudents()
	if err != nil {
		return nil, err
	}

	for _, std := range students {
		r[std.Login] = make(map[string]string)

		r[std.Login]["vlan0"] = fmt.Sprintf("172.23.0.%d", std.IPSuffix())
		r[std.Login]["vlan7"] = fmt.Sprintf("172.23.142.%d", std.IPSuffix())
	}

	return r, nil
}

func showStudentIPs(student Student, body []byte) (interface{}, error) {
	r := make(map[string]string)

	r["vlan0"] = fmt.Sprintf("172.23.0.%d", student.IPSuffix())
	r["vlan7"] = fmt.Sprintf("172.23.142.%d", student.IPSuffix())

	return r, nil
}