Rest API in Golang

rest_api.go

import (
	"encoding/json"
	"fmt"
	"log"
	"net/http"

	"github.com/gorilla/mux"
	"github.com/rs/xid"
)

// models
type Person struct {
	ID        string `json:"id,omitempty"`
	Firstname string `json:"firstname,omitempty"`
	Lastname  string `json:"lastname,omitempty"`
	Age       int    `json:"age,omitempty"`
	Location  `json:"location,omitempty"`
}

type Location struct {
	Country string `json:"country,omitempty"`
	City    string `json:"city,omitempty"`
}

var people []Person

// handlers

func CreatePersonEndpoint(w http.ResponseWriter, r *http.Request) {
	var person Person
	_ = json.NewDecoder(r.Body).Decode(&person)
	people = append(people, person)
	json.NewEncoder(w).Encode(person)
}

func GetPeopleEndpoint(w http.ResponseWriter, r *http.Request) {
	json.NewEncoder(w).Encode(people)
}

func GetPersonEndpoint(w http.ResponseWriter, r *http.Request) {
	params := mux.Vars(r)
	for _, p := range people {
		if p.ID == params["id"] {
			json.NewEncoder(w).Encode(p)
			return
		}
	}
	json.NewEncoder(w).Encode("Person Not Found")
}

func UpdatePersonEndpoint(w http.ResponseWriter, r *http.Request) {
	var person Person
	_ = json.NewDecoder(r.Body).Decode(&person)
	params := mux.Vars(r)
	for i, p := range people {
		if p.ID == params["id"] {
			people[i] = person
			json.NewEncoder(w).Encode(person)
			break
		}
	}
}

func DeletePersonEndpoint(w http.ResponseWriter, r *http.Request) {
	params := mux.Vars(r)
	for i, p := range people {
		if p.ID == params["id"] {
			copy(people[i:], people[i+1:])
			people = people[:len(people)-1]
			break
		}
	}
	json.NewEncoder(w).Encode(people)
}

// routers
func main() {

	router := mux.NewRouter()
	people = append(people, Person{ID: xid.New().String(), Firstname: "Ruan", Lastname: "Bekker", Age: 32, Location: Location{Country: "South Africa", City: "Cape Town"}})
	people = append(people, Person{ID: xid.New().String(), Firstname: "Donovan", Lastname: "Hack", Age: 36, Location: Location{Country: "South Africa", City: "Cape Town"}})
	people = append(people, Person{ID: xid.New().String(), Firstname: "Stefan", Lastname: "Bester", Age: 32, Location: Location{Country: "South Africa", City: "Kroonstad"}})
	people = append(people, Person{ID: xid.New().String(), Firstname: "Kevin", Lastname: "Adams", Age: 37, Location: Location{Country: "New Zealand", City: "Auckland"}})
	people = append(people, Person{ID: xid.New().String(), Firstname: "James", Lastname: "Dean", Age: 44, Location: Location{Country: "America", City: "Manhattan"}})
	router.HandleFunc("/people", GetPeopleEndpoint).Methods("GET")
	router.HandleFunc("/people/{id}", GetPersonEndpoint).Methods("GET")
	router.HandleFunc("/people", CreatePersonEndpoint).Methods("POST")
	router.HandleFunc("/people/{id}", DeletePersonEndpoint).Methods("DELETE")
	router.HandleFunc("/people/{id}", UpdatePersonEndpoint).Methods("PUT")
	fmt.Println("Starting Server on Port 8000")
	log.Fatal(http.ListenAndServe(":8000", router))
}