const database = require("../../utils/database.js");
const paginator = require("../../utils/pagination/pagination.js");
const { random } = require("../../utils/misc.js");
const Command = require("../../classes/command.js");

class TagsCommand extends Command {
  // todo: find a way to split this into subcommands
  async run() {
    if (!this.message.channel.guild) return "This command only works in servers!";

    if (this.args.length === 0) return "You need to provide the name of the tag you want to view!";
    const tags = await database.getTags(this.message.channel.guild.id);
    const blacklist = ["create", "add", "edit", "remove", "delete", "list", "random", "own", "owner"];
    switch (this.args[0].toLowerCase()) {
      case "create":
      case "add":
        if (this.args[1] === undefined) return "You need to provide the name of the tag you want to add!";
        if (blacklist.includes(this.args[1].toLowerCase())) return "You can't make a tag with that name!";
        if (tags[this.args[1].toLowerCase()]) return "This tag already exists!";
        var result = await this.setTag(this.args.slice(2).join(" "), this.args[1].toLowerCase(), this.message);
        if (result) return result;
        return `The tag \`${this.args[1].toLowerCase()}\` has been added!`;
      case "delete":
      case "remove":
        if (this.args[1] === undefined) return "You need to provide the name of the tag you want to delete!";
        if (!tags[this.args[1].toLowerCase()]) return "This tag doesn't exist!";
        if (tags[this.args[1].toLowerCase()].author !== this.message.author.id && !this.message.member.permissions.has("manageMessages") && this.message.author.id !== process.env.OWNER) return "You don't own this tag!";
        await database.removeTag(this.args[1].toLowerCase(), this.message.channel.guild);
        return `The tag \`${this.args[1].toLowerCase()}\` has been deleted!`;
      case "edit":
        if (this.args[1] === undefined) return "You need to provide the name of the tag you want to edit!";
        if (!tags[this.args[1].toLowerCase()]) return "This tag doesn't exist!";
        if (tags[this.args[1].toLowerCase()].author !== this.message.author.id && !this.message.member.permissions.has("manageMessages") && this.message.author.id !== process.env.OWNER) return "You don't own this tag!";
        await this.setTag(this.args.slice(2).join(" "), this.args[1].toLowerCase(), this.message, true);
        return `The tag \`${this.args[1].toLowerCase()}\` has been edited!`;
      case "own":
      case "owner":
        if (this.args[1] === undefined) return "You need to provide the name of the tag you want to check the owner of!";
        if (!tags[this.args[1].toLowerCase()]) return "This tag doesn't exist!";
        var user = await this.ipc.fetchUser(tags[this.args[1].toLowerCase()].author);
        if (!user) return `I couldn't find exactly who owns this tag, but I was able to get their ID: \`${tags[this.args[1].toLowerCase()].author}\``;
        return `This tag is owned by **${user.username}#${user.discriminator}** (\`${tags[this.args[1].toLowerCase()].author}\`).`;
      case "list":
        if (!this.message.channel.permissionsOf(this.client.user.id).has("embedLinks")) return "I don't have the `Embed Links` permission!";
        var pageSize = 15;
        var embeds = [];
        var groups = Object.keys(tags).map((item, index) => {
          return index % pageSize === 0 ? Object.keys(tags).slice(index, index + pageSize) : null;
        }).filter((item) => {
          return item;
        });
        for (const [i, value] of groups.entries()) {
          embeds.push({
            "embed": {
              "title": "Tag List",
              "color": 16711680,
              "footer": {
                "text": `Page ${i + 1} of ${groups.length}`
              },
              "description": value.join("\n"),
              "author": {
                "name": this.message.author.username,
                "icon_url": this.message.author.avatarURL
              }
            }
          });
        }
        if (embeds.length === 0) return "I couldn't find any tags!";
        return paginator(this.client, this.message, embeds);
      case "random":
        return tags[random(Object.keys(tags))].content;
      default:
        if (!tags[this.args[0].toLowerCase()]) return "This tag doesn't exist!";
        return tags[this.args[0].toLowerCase()].content;
    }
  }

  async setTag(content, name, message, edit = false) {
    if ((!content || content.length === 0) && message.attachments.length === 0) return "You need to provide the content of the tag!";
    if (content && content.length >= 2000) return "Your tag content is too long!";
    if (message.attachments.length !== 0 && content) {
      await database[edit ? "editTag" : "setTag"](name, { content: `${content} ${message.attachments[0].url}`, author: message.author.id }, message.channel.guild);
    } else if (message.attachments.length !== 0) {
      await database[edit ? "editTag" : "setTag"](name, { content: message.attachments[0].url, author: message.author.id }, message.channel.guild);
    } else {
      await database[edit ? "editTag" : "setTag"](name, { content: content, author: message.author.id }, message.channel.guild);
    }
    return;
  }

  static description = {
    default: "Gets a tag",
    add: "Adds a tag",
    delete: "Deletes a tag",
    edit: "Edits a tag",
    list: "Lists all tags in the server",
    random: "Gets a random tag",
    owner: "Gets the owner of a tag"
  };
  static aliases = ["t", "tag", "ta"];
  static arguments = {
    default: ["[name]"],
    add: ["[name]", "[content]"],
    delete: ["[name]"],
    edit: ["[name]", "[content]"],
    owner: ["[name]"]
  };
}

module.exports = TagsCommand;