import {
  ActionRowBuilder,
  AutocompleteInteraction,
  ButtonBuilder,
  ButtonInteraction,
  ButtonStyle,
  CacheType,
  ChatInputCommandInteraction,
  EmbedBuilder,
  Interaction,
  InteractionEditReplyOptions,
  REST,
  RESTPostAPIChatInputApplicationCommandsJSONBody,
  Routes,
  SlashCommandBuilder,
  SlashCommandSubcommandsOnlyBuilder,
} from 'discord.js';
import discord from '../../discord.json' assert { type: 'json' };
import debug from '../commands/debug.js';
import eligible from '../commands/eligible.js';
import evolution from '../commands/evolution.js';
import help from '../commands/help.js';
import inactive from '../commands/inactive.js';
import ownedtanks from '../commands/ownedtanks.js';
import ping from '../commands/ping.js';
import playerachievements from '../commands/playerachievements.js';
import playerinfo from '../commands/playerinfo.js';
import searchclans from '../commands/searchclans.js';
import searchplayers from '../commands/searchplayers.js';
import searchtanks from '../commands/searchtanks.js';
import stats from '../commands/stats.js';
import today from '../commands/today.js';
import verify from '../commands/verify.js';
import negativeEmbed from '../core/interaction/negativeEmbed.js';
import warningEmbed from '../core/interaction/warningEmbed.js';
import { DISCORD_TOKEN } from '../core/process/args.js';
import getClientId from '../core/process/getClientId.js';
import isDev from '../core/process/isDev.js';
import { psa } from '../core/process/psa.js';
import render from '../core/ui/render.js';
import { handleError } from './error.js';

export type CommandReturnable = EmbedBuilder | ButtonBuilder | JSX.Element;
export type RichCommandReturnable = CommandReturnable | CommandReturnable[];

export type CommandRegistry = {
  inDevelopment: boolean;
  inProduction: boolean;
  inPublic: boolean;

  command:
    | SlashCommandBuilder
    | SlashCommandSubcommandsOnlyBuilder
    | Omit<SlashCommandBuilder, 'addSubcommand' | 'addSubcommandGroup'>;
  autocomplete?: (interaction: AutocompleteInteraction<CacheType>) => void;
} & (
  | {
      handlesInteraction?: false;
      execute: (
        interaction: ChatInputCommandInteraction<CacheType>,
      ) => RichCommandReturnable | Promise<RichCommandReturnable>;
    }
  | {
      handlesInteraction: true;
      execute: (interaction: ChatInputCommandInteraction<CacheType>) => void;
    }
);

const rest = new REST().setToken(DISCORD_TOKEN);

const commands = (
  [
    debug,
    eligible,
    help,
    inactive,
    ownedtanks,
    playerachievements,
    playerinfo,
    searchclans,
    searchplayers,
    searchtanks,
    stats,
    today,
    verify,
    ping,
    evolution,
  ] as CommandRegistry[]
).reduce<Record<string, CommandRegistry>>((accumulator, registry) => {
  registry.command.setName(
    isDev() ? `${registry.command.name}dev` : registry.command.name,
  );

  return { ...accumulator, [registry.command.name]: registry };
}, {});

export const guildCommands: RESTPostAPIChatInputApplicationCommandsJSONBody[] =
  [];
export const publicCommands: RESTPostAPIChatInputApplicationCommandsJSONBody[] =
  [];

Object.entries(commands).forEach(([, registry]) => {
  if (isDev() ? registry.inDevelopment : registry.inProduction) {
    const json = registry.command.toJSON();

    if (registry.inPublic) {
      publicCommands.push(json);
    } else {
      guildCommands.push(json);
    }
  }
});

try {
  console.log(`Refreshing ${publicCommands.length} public command(s).`);
  rest
    .put(Routes.applicationCommands(getClientId()), { body: publicCommands })
    .then((publicData) => {
      console.log(
        `Successfully refreshed ${
          (publicData as RESTPostAPIChatInputApplicationCommandsJSONBody[])
            .length
        } public command(s).`,
      );
    });

  console.log(`Refreshing ${guildCommands.length} guild command(s).`);
  rest
    .put(
      Routes.applicationGuildCommands(getClientId(), discord.tres_guild_id),
      { body: guildCommands },
    )
    .then((guildData) => {
      console.log(
        `Successfully refreshed ${
          (guildData as unknown[]).length
        } guild command(s).`,
      );
    });
} catch (error) {
  console.error(error);
}

//#region Event type handlers
function handleAutocomplete(interaction: AutocompleteInteraction<CacheType>) {
  const command = commands[interaction.commandName];

  if (!command) {
    console.error(`No command matching ${interaction.commandName} was found.`);
    return;
  }

  if (command.autocomplete) command.autocomplete(interaction);
}

async function handleChatInputCommand(
  interaction: ChatInputCommandInteraction<CacheType>,
) {
  const command = commands[interaction.commandName];

  if (!command) {
    console.error(`No command matching ${interaction.commandName} was found.`);
    return;
  }

  console.log(interaction.toString());
  await interaction.deferReply();

  try {
    const result = await command.execute(interaction);

    if (command.handlesInteraction) return;

    const normalizedResult = Array.isArray(result) ? result : [result];
    const reply: InteractionEditReplyOptions = {};

    if (psa.data) {
      normalizedResult.push(warningEmbed(psa.data.title, psa.data.description));
    }

    await Promise.all(
      normalizedResult.map(async (item) => {
        if (item instanceof EmbedBuilder) {
          if (!reply.embeds) reply.embeds = [];
          reply.embeds.push(item);
        } else if (item instanceof ButtonBuilder) {
          if (!reply.components)
            reply.components = [new ActionRowBuilder<ButtonBuilder>()];
          (
            reply.components[0] as ActionRowBuilder<ButtonBuilder>
          ).addComponents(item);
        } else {
          const image = await render(item!);
          if (!reply.files) reply.files = [];
          reply.files.push(image);
        }
      }),
    );

    await interaction.editReply(reply);
  } catch (error) {
    const actionRow = new ActionRowBuilder<ButtonBuilder>().addComponents(
      new ButtonBuilder()
        .setLabel('Get Help on Discord Server')
        .setURL('https://discord.gg/nDt7AjGJQH')
        .setStyle(ButtonStyle.Link),
    );

    await interaction.editReply({
      embeds: [
        negativeEmbed(
          (error as Error).message,
          `${(error as Error).cause ?? 'No further information is available.'}`,
        ),
      ],
      components: [actionRow],
    });

    handleError(error as Error, interaction.commandName);
  }
}

function handleButton(interaction: ButtonInteraction<CacheType>) {
  console.log(interaction.customId);
  interaction.message.edit({
    files: [],
  });
}
//#endregion

export default async function interactionCreate(
  interaction: Interaction<CacheType>,
) {
  if (interaction.isAutocomplete()) {
    handleAutocomplete(interaction);
  } else if (interaction.isChatInputCommand()) {
    handleChatInputCommand(interaction);
  } else if (interaction.isButton()) {
    handleButton(interaction);
  }
}