restproject.go

package main

import (
	"encoding/json"
	"fmt"
	"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) {
	fmt.Println("Inside GetPersonEndpoint ...")
	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) {
	fmt.Println("Inside GetPeopleEndpoint ...")
	json.NewEncoder(w).Encode(people)
}

func CreatePersonEndpoint(w http.ResponseWriter, req *http.Request) {
	fmt.Println("Inside CreatePersonEndpoint ...")
	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) {
	fmt.Println("Inside DeletePersonEndpoint ...")
	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() {
	fmt.Println("accepting connections ....")
	router := mux.NewRouter()
	people = append(people, Person{ID: "1", Firstname: "Malar", Lastname: "K"})
	people = append(people, Person{ID: "2", Firstname: "Mahathi", Lastname: "V"})
	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))
}