package main

import (
	"encoding/json"
	"math/rand"
	"net/http"
)

type Question struct {
	ID            int    `json:"id"`
	Category      string `json:"category"`
	Question      string `json:"question"`
	Answer1       string `json:"answer1"`
	Answer2       string `json:"answer2"`
	Answer3       string `json:"answer3"`
	Answer4       string `json:"answer4"`
	CorrectAnswer int    `json:"-"`
}

// let's declare a global Questions array
// that we can then populate in our main function
// to simulate a database
var Questions []Question

func initializeQuestions() {
	Questions = []Question{
		Question{ID: 0, Category: "Muzika", Question: "Koji kompozitor je stariji od Mozarta?", Answer1: "Haydn", Answer2: "Rizo Ruža", Answer3: "Wagner", Answer4: "Vatroslav Lisinski", CorrectAnswer: 1},
		Question{ID: 1, Category: "Matematika", Question: "Beskonačno minus beskonačno - koliki je rezultat ?", Answer1: "0", Answer2: "Zavisi", Answer3: "2 beskonačna", Answer4: "Nedefinisano u matematici"},
		Question{ID: 2, Category: "Književnost", Question: "Ko je napisao djelo 'Idiot'?", Answer1: "Dostojevski", Answer2: "Decembarski", Answer3: "Lenjin", Answer4: "Branko Čopić"},
	}
}

func randomQuestionHandler(w http.ResponseWriter, r *http.Request) {
	randomIndex := rand.Intn(len(Questions))
	question := Questions[randomIndex]
	json.NewEncoder(w).Encode(question)
}