const { InteractionContextType, ApplicationIntegrationType, SlashCommandBuilder, EmbedBuilder, escapeMarkdown, bold, ButtonBuilder, ButtonStyle } = require("discord.js");
const { generateImageUrl } = require('@imgproxy/imgproxy-node');
const { stringify } = require("node:querystring");
const { Pagination } = require('pagination.djs');

const data = new SlashCommandBuilder()
  .setName("isrch")
  .setDescription("SearxNG-powered image search")
  .addStringOption(builder =>
    builder //
      .setName("query")
      .setRequired(true)
      .setDescription("What to search for")
  )
  .setContexts([
    InteractionContextType.Guild,
    InteractionContextType.BotDM,
    InteractionContextType.PrivateChannel
  ])
  .setIntegrationTypes([
    ApplicationIntegrationType.GuildInstall,
    ApplicationIntegrationType.UserInstall
  ]);

function notEmpty(str) {
  return str.trim() !== ''
}

function proxy(url) {
  if (!process.env.IMGPROXY_HOST)
    return url;

  url = generateImageUrl({
    endpoint: process.env.IMGPROXY_HOST,
    url: url,
    salt: process.env.IMGPROXY_SALT,
    key: process.env.IMGPROXY_KEY
  });

  return url;
}

module.exports = {
  data,
  async execute(interaction) {
    const query = interaction.options.getString("query");
    await interaction.deferReply();

    var queryString = stringify({
      "category_images": "",
      "format": "json",
      "q": "!goi " + query
    });

    const embeds = [];
    const data = await (await fetch(`https://s.koda.re/search?${queryString}`)).json();
    for (const result of data.results) {
      if (result.img_src == '') continue;

      var description = result.source ?? result.title;
      if (description.length > 1024) description = description.slice(0, 1021) + "...";

      if (result.img_src.startsWith("//")) result.img_src = "http:" + result.img_src

      const embed = new EmbedBuilder()
        .setColor("#cba6f7")
        .setImage(proxy(result.img_src))
        .setFooter({
          text: result.engines.join(", ")
        });

      if (description.length >= 1)
        embed.setDescription(description);

      embeds.push(embed);
    }

    const pagination = new Pagination(interaction);
    pagination.setEmbeds(embeds, (embed, index, array) => {
      const footerText = [
        `${index + 1}/${array.length}`,
        embed.data.footer.text
      ].filter(notEmpty).join(' · ')
      return embed.setFooter({ text: footerText });
    });
    pagination.render();
  }
}