package main

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

	"git.andreafazzi.eu/andrea/testhub/logger"
	"git.andreafazzi.eu/andrea/testhub/models"
	"git.andreafazzi.eu/andrea/testhub/store"
)

const jsonContentType = "application/json"

type QuizHubCollectorServer struct {
	store store.QuizHubCollectorStore
	http.Handler
}

type Response struct {
	Status  string      `json:"success"`
	Content interface{} `json:"content"`
}

func NewQuizHubCollectorServer(store store.QuizHubCollectorStore) *QuizHubCollectorServer {
	ps := new(QuizHubCollectorServer)
	ps.store = store

	router := http.NewServeMux()

	router.Handle("/tests", logger.WithLogging(http.HandlerFunc(ps.testHandler)))

	ps.Handler = router

	return ps
}

func (ps *QuizHubCollectorServer) testHandler(w http.ResponseWriter, r *http.Request) {
	switch r.Method {
	case http.MethodGet:
		w.Header().Set("content-type", jsonContentType)
		json.NewEncoder(w).Encode(ps.readAllQuizs(w, r))

	case http.MethodPost:
		w.WriteHeader(http.StatusAccepted)
		json.NewEncoder(w).Encode(ps.createQuiz(w, r))
	}
}

func (ps *QuizHubCollectorServer) readAllQuizs(w http.ResponseWriter, r *http.Request) *Response {
	tests, err := ps.store.ReadAllQuizzes()
	if err != nil {
		return &Response{"error", err.Error()}
	}
	return &Response{"success", tests}
}

func (ps *QuizHubCollectorServer) createQuiz(w http.ResponseWriter, r *http.Request) *models.Quiz {
	body, err := ioutil.ReadAll(r.Body)
	if err != nil {
		panic(err)
	}
	createQuizReq := new(store.CreateQuizRequest)
	err = json.Unmarshal(body, &createQuizReq)
	if err != nil {
		panic(err)
	}

	createdQuiz := ps.store.CreateQuiz(createQuizReq)

	return createdQuiz
}