gotodo/internal/webserver/webserver.go

package webserver

import ( 
	"fmt"
	"html/template"
	"net/http"
	"strconv"
	"snamellit.com/play/todo/internal/persist"
)


func PathHandleFunc(path string, f func(http.ResponseWriter, *http.Request)) {
	http.Handle(path, http.StripPrefix(path, http.HandlerFunc(f)))
}

func IndexHandler(w http.ResponseWriter, r *http.Request) {
	t, _ := template.ParseFiles("templates/index.html")
	t.Execute(w, nil)
}


func renderTodos(w http.ResponseWriter) {
	fmt.Println("renderTodos")
	todos,err := persist.GetTodos()
	if err != nil {
		w.WriteHeader(http.StatusInternalServerError)
		fmt.Fprintf(w, "Error: %s", err)
	}
	t, _ := template.ParseFiles("templates/todos.html")
	t.Execute(w, todos)
}

func TodosHandler(w http.ResponseWriter, r *http.Request) {
	fmt.Println("TodosHandler")
	if r.Method == "POST" {
		r.ParseForm()
		todoTitle := r.Form.Get("title")
		persist.AddTodo(todoTitle)
	}
	renderTodos(w)
}

func ToggleTodoHandler(w http.ResponseWriter, r *http.Request) {
	fmt.Println("ToggleTodoHandler")
	todoId, err := strconv.Atoi(r.URL.Path)
	if err != nil {
		w.WriteHeader(http.StatusInternalServerError)
		fmt.Fprintf(w, "Error: %s", err)
	}
	fmt.Println("Toggle Todo Id: %d", todoId)
	todo, err := persist.GetTodoById(todoId)
	if err != nil {
		w.WriteHeader(http.StatusInternalServerError)
		fmt.Fprintf(w, "Error: %s", err)
	}
	todo.Completed = !todo.Completed
	err = persist.SetTodo(todo)
	if err != nil {
		w.WriteHeader(http.StatusInternalServerError)
		fmt.Fprintf(w, "Error: %s", err)
	}
	renderTodos(w)
}

func TodoHandler(w http.ResponseWriter, r *http.Request) {
	if r.Method != "DELETE" {
		w.WriteHeader(http.StatusMethodNotAllowed)
		fmt.Fprintf(w, "Method %s not allowed", r.Method)
		return
	}
	todoId, err := strconv.Atoi(r.URL.Path)
	if err != nil {
		panic(err)
	}
	fmt.Println("Todo Id: %d", todoId)
	persist.DeleteTodoById(todoId)
	TodosHandler(w, r)
	return
}