gpt3

main.go

package main

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

    "github.com/gorilla/mux"
)

type User struct {
    ID string `json:"id,omitempty"`
    Name string `json:"name,omitempty"`
}

var users []User

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

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

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

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

func main() {
    router := mux.NewRouter()
    users = append(users, User{ID: "1", Name: "John Doe"})
    users = append(users, User{ID: "2", Name: "Jane Doe"})
    router.HandleFunc("/users", GetUsers).Methods("GET")
    router.HandleFunc("/users/{id}", GetUser).Methods("GET")
    router.HandleFunc("/users/{id}", CreateUser).Methods("POST")
    router.HandleFunc("/users/{id}", DeleteUser).Methods("DELETE")
    log.Fatal(http.ListenAndServe(":8000", router))
}