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

const ICON_BASE = "https://cdn.discordapp.com/icons/";
const AVATAR_BASE = "https://cdn.discordapp.com/avatars/";
const SPLASH_BASE = "https://cdn.discordapp.com/splashes/";
const BANNER_BASE = "https://cdn.discordapp.com/banners/";

const STATUS_ICONS = {
  online: "<:online:493173082421461002>",
  idle: "<:idle:493173082006093836>",
  dnd: "<:dnd:493173082261815307>",
  offline: "<:offline:493173082253426688>",
};

const {pastelize, getTopColor, lookupUser} = require("../lib/utils.js");

const avatar = new Command("avatar");
avatar.category = CATEGORY;
avatar.helpText = "Get avatar of a user";
avatar.usage = "<user>";
avatar.callback = async function (msg, line) {
  const color = getTopColor(msg, hf.bot.user.id, pastelize(hf.bot.user.id));

  if (line == "--server" || line == "--guild") {
    if (!msg.channel.guild) {
      return "`--server/--guild` can only be used within guilds.";
    } else {
      const url = `${ICON_BASE}${msg.channel.guild.id}/${
        msg.channel.guild.icon
      }.${
        msg.channel.guild.icon.startsWith("a_")
          ? "gif?size=1024&_=.gif"
          : "png?size=1024"
      }`;
      return {
        embed: {
          color,
          title: "Server Icon",
          url,
          image: {
            url,
          },
        },
      };
    }
  } else if (line) {
    const user = await lookupUser(msg, line);
    if (
      user == "No results" ||
      user == "Canceled" ||
      user == "Request timed out"
    ) {
      return user;
    } else {
      const url = `${AVATAR_BASE}${user.id}/${user.avatar}.${
        user.avatar.startsWith("a_") ? "gif?size=1024&_=.gif" : "png?size=1024"
      }`;
      return {
        embed: {
          color,
          title: `Avatar for \`${user.username}#${user.discriminator}\``,
          url,
          image: {
            url,
          },
        },
      };
    }
  } else {
    const url = `${AVATAR_BASE}${msg.author.id}/${msg.author.avatar}.${
      msg.author.avatar.startsWith("a_")
        ? "gif?size=1024&_=.gif"
        : "png?size=1024"
    }`;
    return {
      embed: {
        color,
        title: `Avatar for \`${msg.author.username}#${msg.author.discriminator}\``,
        url,
        image: {
          url,
        },
      },
    };
  }
};
hf.registerCommand(avatar);

const lookupinvite = new Command("lookupinvite");
lookupinvite.category = CATEGORY;
lookupinvite.helpText = "Lookup an invite";
lookupinvite.usage = "<invite code>";
lookupinvite.addAlias("linvite");
lookupinvite.callback = async function (msg, line) {
  const color = getTopColor(msg, hf.bot.user.id, pastelize(hf.bot.user.id));

  if (!line) {
    return "No arguments passed.";
  }

  line = line.replace(/(https?:\/\/)?discord\.gg\//, "");

  const invite = await hf.bot.requestHandler.request(
    "GET",
    "/invites/" + line + "?with_counts=1"
  );
  if (!invite) return ":warning: No data returned.";

  if (invite.message) {
    if (invite.message == "Unknown Invite") {
      return "Invite provided is not valid.";
    } else {
      return `:warning: Got error \`${invite.code}: "${invite.message}"\``;
    }
  } else {
    const embed = {
      color,
      title: `Invite Info: \`${invite.code}\``,
      description: invite.description,
      fields: [
        {
          name: "Guild",
          value: `**${invite.guild.name}** (${invite.guild.id})`,
          inline: true,
        },
        {
          name: "Channel",
          value: `**${invite.channel.name}** (${invite.channel.id})`,
          inline: true,
        },
        {
          name: "Member Count",
          value: `${STATUS_ICONS.online}${invite.approximate_presence_count} online\t\t${STATUS_ICONS.offline}${invite.approximate_member_count} members`,
          inline: false,
        },
        {
          name: "Features",
          value:
            invite.guild.features.length > 0
              ? invite.guild.features
                  .map((feature) =>
                    feature
                      .split("_")
                      .map((x) => x[0] + x.substring(1).toLowerCase())
                      .join(" ")
                  )
                  .join(", ")
              : "None",
          inline: false,
        },
      ],
      thumbnail: {
        url:
          invite.guild.icon &&
          `${ICON_BASE}${invite.guild.id}/${invite.guild.icon}.${
            invite.guild.icon.startsWith("a_")
              ? "gif?size=1024&_=.gif"
              : "png?size=1024"
          }`,
      },
    };

    if (invite.inviter) {
      embed.fields.push({
        name: "Inviter",
        value: `**${invite.inviter.username}#${invite.inviter.discriminator}** (${invite.inviter.id})`,
        inline: true,
      });
    }

    if (invite.guild.icon || invite.guild.splash || invite.guild.banner) {
      embed.fields.push({
        name: "\u200b",
        value: `${
          invite.guild.icon
            ? `[Icon](${ICON_BASE}${invite.guild.id}/${invite.guild.icon}.${
                invite.guild.icon.startsWith("a_")
                  ? "gif?size=1024"
                  : "png?size=1024"
              })`
            : ""
        }${
          invite.guild.splash
            ? `${invite.guild.icon ? " | " : ""}[Splash](${SPLASH_BASE}${
                invite.guild.id
              }/${invite.guild.splash}.png?size=2048)`
            : ""
        }${
          invite.guild.banner
            ? `${
                invite.guild.icon || invite.guild.splash ? " | " : ""
              }[Banner](${BANNER_BASE}${invite.guild.id}/${
                invite.guild.banner
              }.png?size=2048)`
            : ""
        }`,
        inline: false,
      });
    }

    if (invite.guild.splash) {
      embed.image = {
        url: `${SPLASH_BASE}${invite.guild.id}/${invite.guild.splash}.png?size=256`,
      };
    }

    return {embed};
  }
};
hf.registerCommand(lookupinvite);

const snowflake = new Command("snowflake");
snowflake.category = CATEGORY;
snowflake.helpText = "Converts a snowflake ID into readable time.";
snowflake.usage = "<--twitter> [snowflake]";
snowflake.callback = function (msg, line) {
  let twitter = false;
  if (line.startsWith("--twitter")) {
    twitter = true;
    line.replace("--twitter ", "");
  }
  const num = parseInt(line);
  if (!isNaN(num)) {
    let binary = num.toString(2);
    binary = "0".repeat(64 - binary.length) + binary;
    const timestamp =
      parseInt(binary.substr(0, 42), 2) +
      (twitter ? 1288834974657 : 1420070400000);

    return `The timestamp for \`${line}\` is ${
      new Date(timestamp).toUTCString
    }`;
  } else {
    return "Argument provided is not a number.";
  }
};
hf.registerCommand(snowflake);

const USER_FLAGS = [
  "STAFF",
  "PARTNER",
  "HYPESQUAD",
  "BUG_HUNTER_LEVEL_1",
  "MFA_SMS",
  "PREMIUM_PROMO_DISMISSED",
  "HYPESQUAD_ONLINE_HOUSE_1",
  "HYPESQUAD_ONLINE_HOUSE_2",
  "HYPESQUAD_ONLINE_HOUSE_3",
  "PREMIUM_EARLY_SUPPORTER",
  "TEAM_PSEUDO_USER",
  "<Internal Application (Partner, etc) Flag>",
  "SYSTEM",
  "HAS_UNREAD_URGENT_MESSAGES",
  "BUG_HUNTER_LEVEL_2",
  "UNDERAGE_DELETED",
  "VERIFIED_BOT",
  "VERIFIED_DEVELOPER",
  "CERTIFIED_MODERATOR",
];

const flagdump = new Command("flagdump");
flagdump.category = CATEGORY;
flagdump.helpText = "Dumps Discord user flags.";
flagdump.usage = "[flags]";
flagdump.callback = function (msg, line) {
  const num = parseInt(line);
  if (!isNaN(num)) {
    const bits = num.toString(2);
    const splitBits = bits.split("").reverse();

    const reassignedBits = {};

    for (const shift in splitBits) {
      reassignedBits[shift] = splitBits[shift];
    }

    const flags = Object.keys(reassignedBits).filter(
      (bit) => reassignedBits[bit] == 1
    );

    let out = "```\n";

    for (const flag of flags) {
      out +=
        (USER_FLAGS[flag] || "<Undocumented Flag>") +
        ` (1 << ${flag}, ${1n << BigInt(flag)})\n`;
    }
    out += "```";

    return out;
  } else {
    return "Argument provided is not a number.";
  }
};
hf.registerCommand(flagdump);