rest api in go

main.go
package main

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

    "github.com/gorilla/mux"
)

type Person struct {
    ID        string   `json:"id,omitempty"`
    Firstname string   `json:"firstname,omitempty"`
    Lastname  string   `json:"lastname,omitempty"`
    Address   *Address `json:"address,omitempty"`
}

type Address struct {
    City  string `json:"city,omitempty"`
    State string `json:"state,omitempty"`
}

var people []Person

func GetPersonEndpoint(w http.ResponseWriter, req *http.Request) {
    params := mux.Vars(req)
    for _, item := range people {
        if item.ID == params["id"] {
            json.NewEncoder(w).Encode(item)
            return
        }
    }
    json.NewEncoder(w).Encode(&Person{})
}

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

func CreatePersonEndpoint(w http.ResponseWriter, req *http.Request) {
    params := mux.Vars(req)
    var person Person
    _ = json.NewDecoder(req.Body).Decode(&person)
    person.ID = params["id"]
    people = append(people, person)
    json.NewEncoder(w).Encode(people)
}

func DeletePersonEndpoint(w http.ResponseWriter, req *http.Request) {
    params := mux.Vars(req)
    for index, item := range people {
        if item.ID == params["id"] {
            people = append(people[:index], people[index+1:]...)
            break
        }
    }
    json.NewEncoder(w).Encode(people)
}

func main() {
    router := mux.NewRouter()

    people = append(people, Person{ID: "1", Firstname: "John", Lastname: "Doe", Address: &Address{City: "City X", State: "State X"}})
    people = append(people, Person{ID: "2", Firstname: "Koko", Lastname: "Doe", Address: &Address{City: "City Z", State: "State Y"}})

    router.HandleFunc("/people", GetPeopleEndpoint).Methods("GET")
    router.HandleFunc("/people/{id}", GetPersonEndpoint).Methods("GET")
    router.HandleFunc("/people/{id}", CreatePersonEndpoint).Methods("POST")
    router.HandleFunc("/people/{id}", DeletePersonEndpoint).Methods("DELETE")

    log.Fatal(http.ListenAndServe(":8080", router))
}
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