/*
* @Author: Bartuccio Antoine
* @Date:   2018-11-14 00:15:43
* @Last Modified by:   Bartuccio Antoine
* @Last Modified time: 2019-01-04 10:40:01
 */

package commands

import (
	"encoding/json"
	"io/ioutil"
	"math/rand"
	"sync"

	"git.klmp200.net/ALFRED/ALFRED/shared"

	tb "gopkg.in/tucnak/telebot.v2"
)

type quoteStorage struct {
	mutex sync.Mutex
	data  []string
}

var sharedQuotes *quoteStorage

// Quote display a quote on the chat
func Quote(m *tb.Message) {

	if sharedQuotes == nil {
		loadQuotes("quotes.json")
	}
	sharedQuotes.mutex.Lock()
	defer sharedQuotes.mutex.Unlock()
	shared.Bot.Send(m.Chat, sharedQuotes.data[rand.Intn(len(sharedQuotes.data))])
}

func loadQuotes(path string) {

	sharedQuotes = &quoteStorage{}
	sharedQuotes.mutex.Lock()
	defer sharedQuotes.mutex.Unlock()

	sharedQuotes.data = []string{}
	data, err := ioutil.ReadFile(path)
	if err != nil {
		return
	}
	if json.Unmarshal(data, &sharedQuotes.data) != nil {
		sharedQuotes.data = []string{}
	}
}