/*
* @Author: Amalvy Arthur
 */

// This module use a property named "subscribed_chats" in the shared Users structure.
// It consists of a list of chatID as a string, chatID are separated by ":" (unix PATH style)

package commands

import (
	"strconv"
	"strings"

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

// Subscribe user sending the command to the current chat
// Command syntax : /subscribe
func Subscribe(m *tb.Message) {
	if m.Chat.Type != "group" && m.Chat.Type != "supergroup" {
		shared.Bot.Send(m.Chat, "Cette commande n'est pas authorisée pour ce type de chat")
		return
	}
	userSubscribedChats, exists := shared.Users.Get(m.Sender.Username, "subscribed_chats")
	if !exists {
		shared.Bot.Send(m.Chat, "Abonnement au chat : "+m.Chat.Title)
		shared.Users.Set(m.Sender.Username, "subscribed_chats", strconv.FormatInt(m.Chat.ID, 10))
		return
	}
	splittedChats := strings.Split(userSubscribedChats, ":")
	for _, chatID := range splittedChats {
		if chatID == strconv.FormatInt(m.Chat.ID, 10) {
			shared.Bot.Send(m.Chat, "Vous êtes déjà abonné à ce chat : "+m.Chat.Title)
			return
		}
	}
	shared.Bot.Send(m.Chat, "Abonnement au chat : "+m.Chat.Title)
	if len(userSubscribedChats) != 0 {
		shared.Users.Set(m.Sender.Username, "subscribed_chats", userSubscribedChats+":"+strconv.FormatInt(m.Chat.ID, 10))
	} else {
		shared.Users.Set(m.Sender.Username, "subscribed_chats", strconv.FormatInt(m.Chat.ID, 10))
	}
}

// Unsubscribe user sending the command from the current chat
// Command syntax : /unsubscribe
func Unsubscribe(m *tb.Message) {
	if m.Chat.Type != "group" && m.Chat.Type != "supergroup" {
		shared.Bot.Send(m.Chat, "Cette commande n'est pas authorisée pour ce type de chat")
		return
	}
	userSubscribedChats, exists := shared.Users.Get(m.Sender.Username, "subscribed_chats")
	if !exists || len(userSubscribedChats) == 0 {
		shared.Bot.Send(m.Chat, "Vous n'êtes abonné à aucun chat")
		return
	}
	splittedChats := strings.Split(userSubscribedChats, ":")
	for i, chatID := range splittedChats {
		if chatID == strconv.FormatInt(m.Chat.ID, 10) {
			shared.Bot.Send(m.Chat, "désabonnement du chat : "+m.Chat.Title)
			splittedChats = append(splittedChats[:i], splittedChats[i+1:]...)
			break
		}
	}
	shared.Users.Set(m.Sender.Username, "subscribed_chats", strings.Join(splittedChats, ":"))
}

func ListSubscribers(m *tb.Message) {
	// 	if m.Chat.Type != "group" && m.Chat.Type != "supergroup" {
	// 		shared.Bot.Send(m.Chat, "Cette commande n'est pas authorisée pour ce type de chat")
	// 		return
	// 	}
}

func Publish(m *tb.Message) {
	if m.ReplyTo == nil {
		shared.Bot.Send(m.Chat, "Please reply to a message to save it")
		return
	}

	defer shared.Bot.Send(m.Chat, "Message publié : "+m.ReplyTo.Text)
	savedMessages, exists := shared.ChatData.Get(m.Chat.ID, "saved_messages")
	if !exists {
		messageList := []string{m.ReplyTo.Text}
		shared.ChatData.Set(m.Chat.ID, "saved_messages", messageList)
		return
	}
	shared.ChatData.Set(m.Chat.ID, "saved_messages",
		append(savedMessages.([]string), m.ReplyTo.Text))
}

func Unpublish(m *tb.Message) {

}

func Retrieve(m *tb.Message) {
	if _, exists := shared.ChatData.Get(m.Chat.ID, "saved_messages"); !exists {
		shared.Bot.Send(m.Chat, "Aucun message sauvegardé")
		return
	}
	savedMessages, _ := shared.ChatData.Get(m.Chat.ID, "saved_messages")
	for _, message := range savedMessages.([]string) {
		shared.Bot.Send(m.Chat, "message : "+message)
	}
}