5.7 کتابخانه http سمت سرور پیشرفته

package main

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

// todo struct  with json tags
type Todo struct {
	ID     int    `json:"id"`
	Title  string `json:"title"`
	Status bool   `json:"status"`
}

// just work as a DB for us!
var todos []Todo

// get all the items in the Todo list and write it. GET
func getTodos(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(todos)
}

// append a new data in array. POST
func addTodo(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Content-Type", "application/json")

	var todo Todo
	json.NewDecoder(r.Body).Decode(&todo)

 // NOTE: this isn't a good way to set ids in production!
	todo.ID = len(todos) + 1
	todos = append(todos, todo)

	json.NewEncoder(w).Encode(todo)
}

// change the todo status. PATCH
func updateTodo(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Content-Type", "application/json")

	var todo Todo
	json.NewDecoder(r.Body).Decode(&todo)

	for i, t := range todos {
		if t.ID == todo.ID {
			todos[i].Status = todo.Status
			json.NewEncoder(w).Encode(todos[i])
			return
		}
	}

	w.WriteHeader(http.StatusNotFound)
	json.NewEncoder(w).Encode(map[string]string{"message": "TODO not found"})
}

// remove the TODO from array. DELETE
func deleteTodo(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Content-Type", "application/json")

	var todo Todo
	json.NewDecoder(r.Body).Decode(&todo)

	for i, t := range todos {
		if t.ID == todo.ID {
			todos = append(todos[:i], todos[i+1:]...)
			json.NewEncoder(w).Encode(map[string]string{"message": "TODO deleted"})
			return
		}
	}

	w.WriteHeader(http.StatusNotFound)
	json.NewEncoder(w).Encode(map[string]string{"message": "TODO not found"})
}


func main() {
  // set routes
	http.HandleFunc("/todos", getTodos)
	http.HandleFunc("/todos/add", addTodo)
	http.HandleFunc("/todos/update", updateTodo)
	http.HandleFunc("/todos/delete", deleteTodo)

  // start server
	fmt.Println("Server starting at port 8080")
	log.Fatal(http.ListenAndServe(":8080", nil))
}

▶ اجرای کد کپی ✖ بستن خروجی

{
    "title":"todo1 test"
}

{
    "id": 1,
    "title": "todo1 test",
    "status": false
}

[
    {
        "id": 1,
        "title": "todo1 test",
        "status": false
    },
  //...
]

{
    "id":1,
    "status":true
}

{
    "id": 1,
    "title": "todo1 test",
    "status": true
}

{
    "id":1
}

{
    "message": "TODO deleted"
}