/**
 * @copyright NHCarrigan
 * @license Naomi's Public License
 * @author Naomi Carrigan
 */

import { DiscordAnalytics } from "@nhcarrigan/discord-analytics";
import {
  Client,
  GatewayIntentBits,
  Events,
  Partials,
  MessageFlags,
} from "discord.js";
import { scheduleJob } from "node-schedule";
import { App } from "octokit";
import { ids } from "./config/ids.js";
import { handleMessageCreate } from "./events/handleMessageCreate.js";
import { cacheData } from "./modules/cacheData.js";
import { checkRetroAchievements } from "./modules/checkAchievements.js";
import { getForumTagId } from "./modules/getForumTagId.js";
import { logMenteeJoin } from "./modules/logMenteeJoin.js";
import { logMenteeLeave } from "./modules/logMenteeLeave.js";
import { postFreeCodeCampNews, postHackerNews } from "./modules/postNews.js";
import { postProgressReminders } from "./modules/postProgressReminders.js";
import { processMentorshipRole } from "./modules/processMentorshipRole.js";
import { processUserGuildTag } from "./modules/processUserGuildTag.js";
import { respondToDm } from "./modules/respondToDm.js";
import { instantiateServer } from "./server/serve.js";
import { logger } from "./utils/logger.js";
import type { Amari } from "./interfaces/amari.js";

if (
  process.env.GH_CLIENT_ID === undefined
  || process.env.GH_PRIVATE_KEY === undefined
) {
  throw new Error("Cannot initialise GitHub!");
}

const githubApp = new App({
  appId:      process.env.GH_CLIENT_ID,
  privateKey: process.env.GH_PRIVATE_KEY.replaceAll("\\n", "\n"),
});
const octokit = await githubApp.getInstallationOctokit(83_119_105);
const { data } = await octokit.rest.apps.getAuthenticated();
await logger.log(
  "debug",
  `Authenticated to GitHub as ${data?.name ?? "unknown"}`,
);

const amari: Amari = {
  discord: new Client({
    intents: [
      GatewayIntentBits.Guilds,
      GatewayIntentBits.GuildMessages,
      GatewayIntentBits.MessageContent,
      GatewayIntentBits.GuildMembers,
      GatewayIntentBits.DirectMessages,
    ],
    partials: [ Partials.Channel ],
  }),
  github:       octokit,
  lastRssItems: {
    freeCodeCamp: null,
    hackerNews:   null,
  },
  recentlyActiveChannels: new Set<string>(),
};

const analytics = new DiscordAnalytics(amari.discord, logger);

amari.discord.once(Events.ClientReady, () => {
  void logger.log(
    "debug",
    `Authenticated to Discord as ${amari.discord.user?.username ?? "unknown"}`,
  );
  void cacheData(amari);
  analytics.startCron();
  scheduleJob("post news", "0 * * * *", async() => {
    await postFreeCodeCampNews(amari);
    await postHackerNews(amari);
  });
  scheduleJob("check guild tags", "0 0 * * *", async() => {
    await logger.log("debug", "Auditing guild tags.");
    await cacheData(amari);
  });
  scheduleJob("post progress reminders", "0 9 * * 1-5", async() => {
    await postProgressReminders(amari);
  });
  setInterval(() => {
    amari.recentlyActiveChannels = new Set<string>();
  }, 10 * 60 * 1000);
  setInterval(() => {
    void checkRetroAchievements(amari);
  }, 10 * 60 * 1000);
});

amari.discord.on(Events.MessageCreate, (message) => {
  if (!message.inGuild()) {
    void respondToDm(amari, message);
    return;
  }
  void handleMessageCreate(amari, message);
});

amari.discord.on(Events.InteractionCreate, (interaction) => {
  void analytics.logGatewayEvent(Events.InteractionCreate, { ...interaction });
  if (interaction.isButton() && interaction.customId === "resolve") {
    if (interaction.user.id !== ids.users.naomi) {
      return void interaction.reply({
        content: "Who are you????",
        flags:   [ MessageFlags.Ephemeral ],
      });
    }
    return void interaction.message.delete();
  }
  if (interaction.isAutocomplete()) {
    return void interaction;
  }
  return void interaction.reply({
    content: "What?",
    flags:   [ MessageFlags.Ephemeral ],
  });
});

amari.discord.on(Events.ThreadCreate, (thread) => {
  if (thread.parent?.isThreadOnly() !== true) {
    return;
  }
  const { bugReports, communityFeedback, featureRequests, policyIdeation }
    = ids.channels;
  if (
    ![ bugReports,
      communityFeedback,
      featureRequests,
      policyIdeation ].includes(
      thread.parent.id,
    )
  ) {
    return;
  }
  const tagId = getForumTagId(thread.parent.id);
  if (tagId === null) {
    return;
  }
  void thread.setAppliedTags([ tagId ]);
});

amari.discord.on(Events.UserUpdate, (_oldUser, updatedUser) => {
  void processUserGuildTag(amari, updatedUser);
});

amari.discord.on(Events.GuildMemberUpdate, (oldMember, updatedMember) => {
  void processMentorshipRole(amari, oldMember, updatedMember);
});

amari.discord.on(Events.GuildMemberAdd, (member) => {
  void logMenteeJoin(amari, member);
});

amari.discord.on(Events.GuildMemberRemove, (member) => {
  void logMenteeLeave(amari, member);
});

await amari.discord.login(process.env.BOT_TOKEN);
instantiateServer(amari);