allowances/handlers.go

package main

import (
	"encoding/json"
	"log"
	"net/http"
	"strconv"
	"strings"
)

func homeHandler(w http.ResponseWriter, req *http.Request) {
	session, _ := store.Get(req, "creds")
	loggedIn := session.Values["logged in"]
	if loggedIn == nil {
		http.Redirect(w, req, "/login", http.StatusSeeOther)
		return
	}
	children := loadChildren(*db_file)
	T("index.html").Execute(w, map[string]interface{}{
		"children": children})
}

func loginHandler(w http.ResponseWriter, req *http.Request) {
	pwAttempt := req.FormValue("passwd")
	if check_password(*passes_file, pwAttempt) {
		session, _ := store.Get(req, "creds")
		session.Values["logged in"] = true
		session.Save(req, w)
		http.Redirect(w, req, "/", http.StatusSeeOther)
		return
	}
	T("login.html").Execute(w, map[string]interface{}{})
}

func logoutHandler(w http.ResponseWriter, req *http.Request) {
	session, _ := store.Get(req, "creds")
	delete(session.Values, "logged in")
	session.Save(req, w)
	http.Redirect(w, req, "/", http.StatusSeeOther)
	return
}

func addHandler(w http.ResponseWriter, req *http.Request) {
	path := req.URL.Path[len(addPath):]
	bits := strings.Split(path, "/")
	child := bits[0]
	amount, err := strconv.Atoi(bits[1])
	if err != nil {
		log.Fatal("couldn't parse a dollar amount", err)
	}
	children := loadChildren(*db_file)
	children[child] += amount
	defer dumpChildren(*db_file, children)
	w.Header().Set("Content-Type", "application/json")
    b, err := json.Marshal(map[string]interface{}{
        "amount": dollarize(children[child]),
        "name": child,
    })
	w.Write(b)
}