const ReactionCollector = require("./awaitreactions.js");
const MessageCollector = require("./awaitmessages.js");

module.exports = async (client, message, pages, timeout = 120000) => {
  const manageMessages = message.channel.guild && message.channel.permissionsOf(client.user.id).has("manageMessages") ? true : false;
  /*const options = {
    messageReference: {
      channelID: message.channel.id,
      messageID: message.id,
      guildID: message.channel.guild ? message.channel.guild.id : undefined,
      failIfNotExists: false
    },
    allowedMentions: {
      repliedUser: false
    }
  };*/
  let page = 0;
  //let currentPage = await client.createMessage(message.channel.id, Object.assign(pages[page], options));
  let currentPage = await client.createMessage(message.channel.id, pages[page]);
  if (pages.length > 1) {
    const emojiList = ["◀", "🔢", "▶", "🗑"];
    for (const emoji of emojiList) {
      await currentPage.addReaction(emoji);
    }
    const reactionCollector = new ReactionCollector(client, currentPage, (message, reaction, member) => emojiList.includes(reaction.name) && !member.bot, { time: timeout });
    reactionCollector.on("reaction", async (msg, reaction, member) => {
      if (member.id === message.author.id) {
        switch (reaction.name) {
          case "◀":
            page = page > 0 ? --page : pages.length - 1;
            currentPage = await currentPage.edit(pages[page]);
            if (manageMessages) msg.removeReaction("◀", member.id);
            break;
          case "🔢":
            client.createMessage(message.channel.id, Object.assign({ content: "What page do you want to jump to?" }, {
              messageReference: {
                channelID: currentPage.channel.id,
                messageID: currentPage.id,
                guildID: currentPage.channel.guild ? currentPage.channel.guild.id : undefined,
                failIfNotExists: false
              },
              allowedMentions: {
                repliedUser: false
              }
            })).then(askMessage => {
              const messageCollector = new MessageCollector(client, askMessage.channel, (response) => response.author.id === message.author.id && !isNaN(response.content) && Number(response.content) <= pages.length && Number(response.content) > 0, {
                time: timeout,
                maxMatches: 1
              });
              return messageCollector.on("message", async (response) => {
                if (await client.getMessage(askMessage.channel.id, askMessage.id).catch(() => undefined)) askMessage.delete();
                if (manageMessages) await response.delete();
                page = Number(response.content) - 1;
                currentPage = await currentPage.edit(pages[page]);
                if (manageMessages) msg.removeReaction("🔢", member.id);
              });
            }).catch(error => {
              throw error;
            });
            break;
          case "▶":
            page = page + 1 < pages.length ? ++page : 0;
            currentPage = await currentPage.edit(pages[page]);
            if (manageMessages) msg.removeReaction("▶", member.id);
            break;
          case "🗑":
            reactionCollector.emit("end");
            if (await client.getMessage(currentPage.channel.id, currentPage.id).catch(() => undefined)) await currentPage.delete();
            return;
          default:
            break;
        }
      }
    });
    reactionCollector.once("end", async () => {
      try {
        await client.getMessage(currentPage.channel.id, currentPage.id);
        if (manageMessages) {
          await currentPage.removeReactions();
        }
      } catch {
        return;
      }
    });
  }
  return currentPage;
};