main.go

package main

import (
	"encoding/json"
	"github.com/gorilla/mux"
	"log"
	"net/http"
	"os"
	"fmt"
)

type Person struct {
	ID        string   `json:"id,omitempty"`
	Firstname string   `json:"firstname,omitempty"`
	Lastname  string   `json:"lastname,omitempty"`
	Status    string   `json:"status,omitempty"`
}


var people []Person


// get all people
func GetPeople(w http.ResponseWriter, r *http.Request) {
	json.NewEncoder(w).Encode(people)
}

// get a single person
func GetPerson(w http.ResponseWriter, r *http.Request) {
	params := mux.Vars(r)
	for _, item := range people {
		if item.ID == params["id"] {
			json.NewEncoder(w).Encode(item)
			return
		}
	}
	json.NewEncoder(w).Encode(&Person{})
}

// create a new item
func CreatePerson(w http.ResponseWriter, r *http.Request) {
	params := mux.Vars(r)
	var person Person
	_ = json.NewDecoder(r.Body).Decode(&person)
	person.ID = params["id"]
	people = append(people, person)
	json.NewEncoder(w).Encode(people)
}

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

func getEnv(w http.ResponseWriter, r *http.Request) {
	env := os.Environ()
	json.NewEncoder(w).Encode(env)
}


func initPeople() {
	people = append(people, Person{ID: "1", Firstname: "John", Lastname: "Doe", Status: "Present" })
	people = append(people, Person{ID: "2", Firstname: "Koko", Lastname: "Doe", Status: "Away"})
	people = append(people, Person{ID: "3", Firstname: "Francis", Lastname: "Sunday"})
}


// our main function
func main() {
	router := mux.NewRouter()
	initPeople()
	router.HandleFunc("/admin/env", getEnv).Methods("GET")
	router.HandleFunc("/people", GetPeople).Methods("GET")
	router.HandleFunc("/people/{id}", GetPerson).Methods("GET")
	router.HandleFunc("/people/{id}", CreatePerson).Methods("POST")
	router.HandleFunc("/people/{id}", DeletePerson).Methods("DELETE")
	fmt.Printf("Serving people on port 8000")
	log.Fatal(http.ListenAndServe(":8000", router))
}