blog-api.go

package main

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

	"github.com/gorilla/mux"
)

func homePage(w http.ResponseWriter, r *http.Request) {
	fmt.Fprintf(w, "Welcom to Home Page")
	fmt.Println("Endpoint Hit: homePage")
}
func returnSingleArticle(w http.ResponseWriter, r *http.Request) {
	vars := mux.Vars(r)
	key := vars["id"]
	//fmt.Fprintf(w, "Key: "+key)

	for _, article := range Articles {
		if article.Id == key {
			json.NewEncoder(w).Encode(article)
		}
	}
}
func createNewArticle(w http.ResponseWriter, r *http.Request) {
	reqBody, _ := ioutil.ReadAll(r.Body)
	var article Article
	json.Unmarshal(reqBody, &article)
	Articles = append(Articles, article)
	json.NewEncoder(w).Encode(article)
	//fmt.Fprintf(w, "%+v", string(reqBody))
}

func deleteArticle(w http.ResponseWriter, r *http.Request) {
	vars := mux.Vars(r)
	id := vars["id"]

	for index, article := range Articles {
		if article.Id == id {
			Articles = append(Articles[:index], Articles[index+1:]...)
		}
	}
}

func updateArticle(w http.ResponseWriter, r *http.Request) {

	vars := mux.Vars(r)
	id := vars["id"]

	for index, article := range Articles {
		if article.Id == id {
			Articles = append(Articles[:index], Articles[index+1:]...)
		}
	}
	var updatedArticle Article
	json.NewDecoder(r.Body).Decode(&updatedArticle)
	Articles = append(Articles, updatedArticle)
	json.NewEncoder(w).Encode(updatedArticle)
	return
}
func handleRequest() {
	myRouter := mux.NewRouter().StrictSlash(true)
	myRouter.HandleFunc("/", homePage)
	myRouter.HandleFunc("/articles", returnAllArticles).Methods("GET")
	myRouter.HandleFunc("/article", createNewArticle).Methods("POST")
	myRouter.HandleFunc("/article/{id}", updateArticle).Methods("POST")
	myRouter.HandleFunc("/article/{id}", deleteArticle).Methods("DELETE")
	myRouter.HandleFunc("/article/{id}", returnSingleArticle)
	log.Fatal(http.ListenAndServe(":10000", myRouter))
}

//Article is for struct
type Article struct {
	Id      string `json:"Id"`
	Title   string `json:"Title"`
	Desc    string `json:"Desc"`
	Content string `json:"Content"`
}

//Articles is for an Array
var Articles []Article

func returnAllArticles(w http.ResponseWriter, r *http.Request) {
	fmt.Println("Endpoint Hit: returnAllArticles")
	json.NewEncoder(w).Encode(Articles)
}

func main() {
	fmt.Println("Rest API v2.0 - Mux Routers")
	Articles = []Article{
		Article{Id: "1", Title: "Hello", Desc: "Article Description", Content: "Article Content"},
		Article{Id: "2", Title: "Hello 2", Desc: "Article Description", Content: "Article Content"},
	}

	handleRequest()
}