const Command = require("../lib/command.js");
const CATEGORY = "misc";

const fetch = require("node-fetch");
const {hastebin, safeString, parseHtmlEntities} = require("../lib/utils.js");
const GoogleImages = require("google-images");

const imagesClient = new GoogleImages(hf.apikeys.gimg, hf.apikeys.google);

const yt = new Command("youtube");
yt.addAlias("yt");
yt.category = CATEGORY;
yt.helpText = "Search YouTube";
yt.usage = "[search term]";
yt.callback = async function (msg, line) {
  if (!line) return "Arguments are required.";

  const req = await fetch(
    `https://www.googleapis.com/youtube/v3/search?key=${
      hf.apikeys.google
    }&maxResults=5&part=snippet&type=video&q=${encodeURIComponent(line)}`
  ).then((x) => x.json());

  const topVid = req.items[0];

  let out = `**${safeString(
    parseHtmlEntities(topVid.snippet.title)
  )}** | \`${safeString(
    parseHtmlEntities(topVid.snippet.channelTitle)
  )}\`\nhttps://youtu.be/${topVid.id.videoId}\n\n**__See Also:__**\n`;

  for (let i = 1; i < req.items.length; i++) {
    const vid = req.items[i];
    out += `- **${safeString(
      parseHtmlEntities(vid.snippet.title)
    )}** | By: \`${safeString(
      parseHtmlEntities(vid.snippet.channelTitle)
    )}\` | <https://youtu.be/${vid.id.videoId}>\n`;
  }

  return out;
};
hf.registerCommand(yt);

const fyt = new Command("fyt");
fyt.category = CATEGORY;
fyt.helpText = "Search YouTube and take the first result.";
fyt.usage = "[search term]";
fyt.callback = async function (msg, line) {
  if (!line) return "Arguments are required.";

  const req = await fetch(
    `https://www.googleapis.com/youtube/v3/search?key=${
      hf.apikeys.google
    }&maxResults=2&part=snippet&type=video&q=${encodeURIComponent(line)}`
  ).then((x) => x.json());

  const vid = req.items[0];

  return `**${safeString(
    parseHtmlEntities(vid.snippet.title)
  )}** | \`${safeString(
    parseHtmlEntities(vid.snippet.channelTitle)
  )}\`\nhttps://youtu.be/${vid.id.videoId}`;
};
hf.registerCommand(fyt);

const WA_NO_ANSWER = "<:ms_cross:503341994974773250> No answer.";

const wolfram = new Command("wolfram");
wolfram.category = CATEGORY;
wolfram.helpText = "Wolfram Alpha";
wolfram.usage = "<-v> [query]";
wolfram.addAlias("wa");
wolfram.callback = async function (msg, line) {
  let verbose = false;

  if (line.includes("-v")) {
    line = line.replace("-v", "").trim();
    verbose = true;
  }

  const req = await fetch(
    `http://api.wolframalpha.com/v2/query?input=${encodeURIComponent(
      line
    )}&appid=LH2K8H-T3QKETAGT3&output=json`
  ).then((x) => x.json());

  const data = req.queryresult.pods;

  if (!data) return WA_NO_ANSWER;

  // fake no answer
  if (data[0].subpods[0].plaintext.includes("geoIP")) return WA_NO_ANSWER;

  if (verbose) {
    const embed = {
      title: `Result for: \`${safeString(line)}\``,
      fields: [],
      footer: {
        icon_url: "http://www.wolframalpha.com/share.png",
        text: "Powered by Wolfram Alpha",
      },
      image: {
        url: data[1].subpods[0].img.src,
      },
    };

    const extra = data.slice(1, 6);
    for (const x in extra) {
      embed.fields.push({
        name: extra[x].title,
        value: `[${
          extra[x].subpods[0].plaintext.length > 0
            ? extra[x].subpods[0].plaintext
            : "<click for image>"
        }](${extra[x].subpods[0].img.src})`,
        inline: true,
      });
    }

    return {embed};
  } else {
    let image;

    if (data[1].subpods[0].img.src)
      image = Buffer.from(
        await fetch(data[1].subpods[0].img.src).then((x) => x.arrayBuffer())
      );

    let string = "";
    if (data[1].subpods[0].plaintext.length > 0)
      string = safeString(data[1].subpods[0].plaintext);

    if (string.length > 2000 - (6 + safeString(line).length))
      string = "Output too long: " + (await hastebin(string));

    return {
      content: `\`${safeString(line)}\` -> ${string.length > 0 ? string : ""}`,
      file: image && {
        file: image,
        name: "wolfram_output.gif",
      },
    };
  }
};
hf.registerCommand(wolfram);

const gimg = new Command("gimg");
gimg.category = CATEGORY;
gimg.helpText = "Search Google Images";
gimg.usage = "[query]";
gimg.addAlias("img");
gimg.callback = async function (msg, line) {
  if (!line) return "No arguments given.";

  const images = await imagesClient.search(line, {
    safe:
      msg.channel.nsfw && !msg.channel?.topic.includes("[no_nsfw]")
        ? "off"
        : "high",
  });

  const index = Math.floor(Math.random() * images.length);
  const image = images[index];

  return {
    embeds: [
      {
        title: image.description,
        url: image.parentPage,
        image: {
          url: image.url,
        },
        footer: {
          text: `Image ${index}/${images.length}. Rerun to get a different image.`,
        },
      },
    ],
  };
};
hf.registerCommand(gimg);

const fimg = new Command("fimg");
fimg.category = CATEGORY;
fimg.helpText = "Send first result from Google Images";
fimg.usage = "[query]";
fimg.callback = async function (msg, line) {
  if (!line) return "No arguments given.";

  const images = await imagesClient.search(line, {
    safe:
      msg.channel.nsfw && !msg.channel?.topic.includes("[no_nsfw]")
        ? "off"
        : "high",
  });

  const image = images[0];

  return {
    embeds: [
      {
        title: image.description,
        url: image.parentPage,
        image: {
          url: image.url,
        },
      },
    ],
  };
};
hf.registerCommand(fimg);

const poll = new Command("poll");
poll.category = CATEGORY;
poll.helpText = "Start a poll";
poll.usage = "[topic] [option 1] [option 2] [...option 3-10]";
poll.callback = async function (msg, line, topic, ...options) {
  if (!line || !topic)
    return 'Usage: hf!poll "topic" "option 1" "option 2" "...options 3-10"';

  const arrOptions = [...options].slice(0, 10);
  if (arrOptions.length < 2) return "A minimum of two options are required.";

  const reactions = [];
  let displayString = `**${msg.author.username}#${msg.author.discriminator}** has started a poll:\n**__${topic}__**\n`;
  for (let i = 0; i < arrOptions.length; i++) {
    displayString +=
      (i === 9 ? "\ud83d\udd1f" : `${i + 1}\u20e3`) +
      ": " +
      arrOptions[i] +
      "\n";
    reactions[i] = i === 9 ? "\ud83d\udd1f" : `${i + 1}\u20e3`;
  }

  return {
    content: displayString,
    addReactions: reactions,
  };
};
hf.registerCommand(poll);

const vote = new Command("vote");
vote.category = CATEGORY;
vote.helpText = "Start a yes/no vote";
vote.usage = "[topic]";
vote.callback = async function (msg, line) {
  if (!line) return "No topic given.";

  return {
    content: `**${msg.author.username}#${msg.author.discriminator}** has started a vote:\n**__${line}__**\n<:ms_tick:503341995348066313>: Yes\n<:ms_cross:503341994974773250>: No`,
    addReactions: [
      ":ms_tick:503341995348066313",
      ":ms_cross:503341994974773250",
    ],
  };
};
hf.registerCommand(vote);

const DAYS = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];
const arsched = new Command("arsched");
arsched.category = CATEGORY;
arsched.helpText = "aNONradio.net schedule";
arsched.callback = async function (msg, line) {
  const now = new Date();

  const schedule = await fetch("https://anonradio.net/schedule/").then((res) =>
    res.text()
  );

  let lines = schedule.split("\n");
  lines = lines.slice(4, lines.length - 2);

  const parsedLines = [];

  for (const line of lines) {
    const [_, time, id, name] = line.match(/^(.{3,4} .{4})\s+(.+?) {2}(.+?)$/);

    const tmp = time.split(" ");
    const day = tmp[0];
    let hour = tmp[1];
    const currentDay = now.getUTCDay();
    const targetDay = DAYS.indexOf(day);
    const delta = (targetDay + 7 - currentDay) % 7;

    let currentYear = now.getUTCFullYear();
    const currentMonth = now.getUTCMonth();
    const currentDateDay = now.getUTCDate();
    let targetMonth = currentMonth;
    const lastDay = new Date(currentYear, currentMonth, 0).getDate();
    let targetDateDay = currentDateDay + delta;
    if (targetDateDay > lastDay) {
      targetMonth = currentMonth === 12 ? 1 : currentMonth + 1;
      targetDateDay = 1;
      if (currentMonth === 12) currentYear++;
    }

    hour = hour.slice(0, 2) + ":" + hour.slice(-2);

    const timestamp =
      Date.parse(
        `${DAYS[targetDay]}, ${currentYear}-${targetMonth}-${targetDateDay} ${hour} UTC`
      ) / 1000;

    parsedLines.push({timestamp, id, name});
  }

  const liveNow = parsedLines.splice(0, 1)[0];
  liveNow.name = liveNow.name.replace("  <- Live NOW", "");

  return {
    embeds: [
      {
        title: "Click to listen",
        url: "http://anonradio.net:8000/anonradio",
        author: {
          name: `LIVE NOW: ${liveNow.name} (\`${liveNow.id}\`)`,
        },
        fields: parsedLines.map((line) => ({
          inline: true,
          name: `${line.name} (\`${line.id}\`)`,
          value: `<t:${line.timestamp}:R>`,
        })),
      },
    ],
  };
};
hf.registerCommand(arsched);