import { SelectMenuOption } from '@discordjs/builders';
import Discord, { MessageActionRow, MessageButton } from "discord.js";
import EmojiEmbed from "../utils/generateEmojiEmbed.js";
import getEmojiByName from "../utils/getEmojiByName.js";
import createPageIndicator from "../utils/createPageIndicator.js";

class Embed {
    embed: Discord.MessageEmbed;
    title: string;
    description: string = "";
    pageId: number = 0;
    setEmbed(embed: Discord.MessageEmbed) { this.embed = embed; return this; }
    setTitle(title: string) { this.title = title; return this; }
    setDescription(description: string) { this.description = description; return this; }
    setPageId(pageId: number) { this.pageId = pageId; return this; }
}

export default async (guild, interaction?) => {
    let c = guild.publicUpdatesChannel ? guild.publicUpdatesChannel : guild.systemChannel;
    c = c ? c : guild.channels.cache.find(ch => ch.type === "GUILD_TEXT" && ch.permissionsFor(guild.roles.everyone).has("SEND_MESSAGES") && ch.permissionsFor(guild.me).has("EMBED_LINKS"));
    let pages = [
        new Embed()
            .setEmbed(new EmojiEmbed()
                .setTitle("Welcome to Nucleus")
                .setDescription(
                    "Thanks for adding Nucleus to your server\n\n" +
                    "On the next few pages you can find instructions on getting started, and commands you may want to set up\n\n" +
                    "If you need support, have questions or want features, you can let us know in [Clicks](https://discord.gg/bPaNnxe)"
                )
                .setEmoji("NUCLEUS.LOGO")
                .setStatus("Danger")
            ).setTitle("Welcome").setDescription("About Nucleus").setPageId(0),
        new Embed()
            .setEmbed(new EmojiEmbed()
                .setTitle("Logging")
                .setDescription(
                    "Nucleus can log server events and keep you informed with what content is being posted to your server.\n" +
                    "We have 2 different types of logs, which each can be configured to send to a channel of your choice:\n" +
                    "**General Logs:** These are events like kicks and channel changes etc.\n" +
                    "**Warning Logs:** Warnings like NSFW avatars and spam etc. that may require action by a server staff member. " +
                    "These go to to a separate staff notifications channel.\n\n" +
                    "A general log channel can be set with `/settings log`\n" +
                    "A warning log channel can be set with `/settings warnings channel`"
                )
                .setEmoji("NUCLEUS.LOGO")
                .setStatus("Danger")
            ).setTitle("Logging").setDescription("Logging, staff warning logs etc.").setPageId(1),
        new Embed()
            .setEmbed(new EmojiEmbed()
                .setTitle("Moderation")
                .setDescription(
                    "Nucleus has a number of commands that can be used to moderate your server.\n" +
                    "These commands are all found under `/mod`, and they include:\n" +
                    `**${getEmojiByName("PUNISH.WARN.YELLOW")} Warn:** The user is warned (via DM) that they violated server rules.\n` +
                    `**${getEmojiByName("PUNISH.CLEARHISTORY")} Clear:** Some messages from a user are deleted in a channel.\n` +
                    `**${getEmojiByName("PUNISH.MUTE.YELLOW")} Mute:** The user is unable to send messages or join voice chats.\n` +
                    `**${getEmojiByName("PUNISH.MUTE.GREEN")} Unmute:** The user is able to send messages in the server.\n` +
                    `**${getEmojiByName("PUNISH.KICK.RED")} Kick:** The user is removed from the server.\n` +
                    `**${getEmojiByName("PUNISH.SOFTBAN")} Softban:** Kicks the user, deleting their messages from every channel.\n` +
                    `**${getEmojiByName("PUNISH.BAN.RED")} Ban:** The user is removed from the server, and they are unable to rejoin.\n` +
                    `**${getEmojiByName("PUNISH.BAN.GREEN")} Unban:** The user is able to rejoin the server.`
                )
            .setEmoji("NUCLEUS.LOGO")
            .setStatus("Danger")
            ).setTitle("Moderation").setDescription("Basic moderation commands").setPageId(2),
        new Embed()
            .setEmbed(new EmojiEmbed()
                .setTitle("Verify")
                .setDescription(
                    "Nucleus has a verification system that allows users to prove they aren't bots.\n" +
                    "This is done by running `/verify` which sends a message only the user can see, giving them a link to a CAPTCHA to verify.\n" +
                    "After the user complete's the CAPTCHA, they are given a role and can use the permissions accordingly.\n" +
                    "You can set the role given with `/settings verify`"
                )
                .setEmoji("NUCLEUS.LOGO")
                .setStatus("Danger")
            ).setTitle("Verify").setDescription("Captcha verification system").setPageId(3),
        new Embed()
            .setEmbed(new EmojiEmbed()
                .setTitle("Content Scanning")
                .setDescription(
                    "Nucleus has a content scanning system that automatically scans links and images sent by users.\n" +
                    "Nucleus can detect, delete, and punish users for sending NSFW content, or links to scam or adult sites.\n" +
                    "You can set the threshold for this in `/settings automation`" // TODO
                )
                .setEmoji("NUCLEUS.LOGO")
                .setStatus("Danger")
            ).setTitle("Content Scanning").setDescription("Content (NSFW, malware, scams) scanning").setPageId(4),
        new Embed()
            .setEmbed(new EmojiEmbed()
                .setTitle("Tickets")
                .setDescription(
                    "Nucleus has a ticket system that allows users to create tickets and have a support team respond to them.\n" +
                    "Tickets can be created with `/ticket create` and a channel is created, pinging the user and support role.\n" +
                    "When the ticket is resolved, anyone can run `/ticket close` (or click the button) to close it.\n" +
                    "Running `/ticket close` again will delete the ticket."
                )
                .setEmoji("NUCLEUS.LOGO")
                .setStatus("Danger")
            ).setTitle("Tickets").setDescription("Ticket system").setPageId(5),
        new Embed()
            .setEmbed(new EmojiEmbed()
                .setTitle("Tags")
                .setDescription(
                    "Add a tag system to your server with the `/tag` and `/tags` commands.\n" +
                    "To create a tag, type `/tags create <tag name> <tag content>`.\n" +
                    "Tag names and content can be edited with `/tags edit`.\n" +
                    "To delete a tag, type `/tags delete <tag name>`.\n" +
                    "To view all tags, type `/tags list`.\n"
                )
                .setEmoji("NUCLEUS.LOGO")
                .setStatus("Danger")
            ).setTitle("Tags").setDescription("Tag system").setPageId(6)
    ]
    let m;
    if (interaction) {
        m = await interaction.reply({embeds: [
            new EmojiEmbed()
                .setTitle("Welcome")
                .setDescription(`One moment...`)
                .setStatus("Danger")
                .setEmoji("NUCLEUS.LOADING")
        ], fetchReply: true, ephemeral: true});
    } else {
        m = await c.send({embeds: [
            new EmojiEmbed()
                .setTitle("Welcome")
                .setDescription(`One moment...`)
                .setStatus("Danger")
                .setEmoji("NUCLEUS.LOADING")
        ], fetchReply: true });
    }
    let page = 0;

    let f = async (component) => {
        return (component.member as Discord.GuildMember).permissions.has("MANAGE_GUILD");
    }

    let selectPaneOpen = false;

    while (true) {
        let selectPane = []

        if (selectPaneOpen) {
            let options = [];
            pages.forEach(embed => {
                options.push(new SelectMenuOption({
                    label: embed.title,
                    value: embed.pageId.toString(),
                    description: embed.description || "",
                }))
            })
            selectPane = [new MessageActionRow().addComponents([
                new Discord.MessageSelectMenu()
                    .addOptions(options)
                    .setCustomId("page")
                    .setMaxValues(1)
                    .setPlaceholder("Choose a page...")
            ])]
        }
        let components = selectPane.concat([new MessageActionRow().addComponents([
            new MessageButton().setCustomId("left").setEmoji(getEmojiByName("CONTROL.LEFT", "id")).setStyle("SECONDARY").setDisabled(page === 0),
            new MessageButton().setCustomId("select").setEmoji(getEmojiByName("CONTROL.MENU", "id")).setStyle(selectPaneOpen ? "PRIMARY" : "SECONDARY").setDisabled(false),
            new MessageButton().setCustomId("right").setEmoji(getEmojiByName("CONTROL.RIGHT", "id")).setStyle("SECONDARY").setDisabled(page === pages.length - 1),
            new MessageButton().setCustomId("close").setEmoji(getEmojiByName("CONTROL.CROSS", "id")).setStyle("DANGER")
        ])])
        if (interaction) {
            let em = new Discord.MessageEmbed(pages[page].embed)
            em.setDescription(em.description + "\n\n" + createPageIndicator(pages.length, page));
            await interaction.editReply({
                embeds: [em],
                components: components
            });
        } else {
            let em = new Discord.MessageEmbed(pages[page].embed)
            em.setDescription(em.description + "\n\n" + createPageIndicator(pages.length, page));
            await m.edit({
                embeds: [em],
                components: components,
                fetchReply: true
            });
        }
        let i
        try {
            i = await m.awaitMessageComponent({filter: interaction ? () => { return true } : f, time: 300000});
        } catch(e) { break }
        i.deferUpdate()
        if (i.component.customId == "left") {
            if (page > 0) page--;
            selectPaneOpen = false;
        } else if (i.component.customId == "right") {
            if (page < pages.length - 1) page++;
            selectPaneOpen = false;
        } else if (i.component.customId == "select") {
            selectPaneOpen = !selectPaneOpen;
        } else if (i.component.customId == "page") {
            page = parseInt(i.values[0]);
            selectPaneOpen = false;
        } else {
            if (interaction) {
                let em = new Discord.MessageEmbed(pages[page].embed)
                em.setDescription(em.description + "\n\n" + createPageIndicator(pages.length, page) + " | Message closed");
                interaction.editReply({embeds: [em], components: [new MessageActionRow().addComponents([
                    new MessageButton().setCustomId("left").setEmoji(getEmojiByName("CONTROL.LEFT", "id")).setStyle("SECONDARY").setDisabled(true),
                    new MessageButton().setCustomId("select").setEmoji(getEmojiByName("CONTROL.MENU", "id")).setStyle(selectPaneOpen ? "PRIMARY" : "SECONDARY").setDisabled(true),
                    new MessageButton().setCustomId("right").setEmoji(getEmojiByName("CONTROL.RIGHT", "id")).setStyle("SECONDARY").setDisabled(true),
                    new MessageButton().setCustomId("close").setEmoji(getEmojiByName("CONTROL.CROSS", "id")).setStyle("DANGER").setDisabled(true)
                ])], fetchReply: true});
            } else {
                m.delete();
            }
            return;
        }
    }
    if (interaction) {
        let em = new Discord.MessageEmbed(pages[page])
        em.setDescription(em.description + "\n\n" + createPageIndicator(pages.length, page) + " | Message timed out");
        await interaction.editReply({
            embeds: [em],
            components: [new MessageActionRow().addComponents([
                new MessageButton().setCustomId("left").setEmoji(getEmojiByName("CONTROL.LEFT", "id")).setStyle("SECONDARY").setDisabled(true),
                new MessageButton().setCustomId("select").setEmoji(getEmojiByName("CONTROL.MENU", "id")).setStyle("SECONDARY").setDisabled(true),
                new MessageButton().setCustomId("right").setEmoji(getEmojiByName("CONTROL.RIGHT", "id")).setStyle("SECONDARY").setDisabled(true),
                new MessageButton().setCustomId("close").setEmoji(getEmojiByName("CONTROL.CROSS", "id")).setStyle("DANGER").setDisabled(true)
            ])]
        });
    } else {
        let em = new Discord.MessageEmbed(pages[page])
        em.setDescription(em.description + "\n\n" + createPageIndicator(pages.length, page) + " | Message timed out");
        await m.edit({
            embeds: [em],
            components: [new MessageActionRow().addComponents([
                new MessageButton().setCustomId("left").setEmoji(getEmojiByName("CONTROL.LEFT", "id")).setStyle("SECONDARY").setDisabled(true),
                new MessageButton().setCustomId("select").setEmoji(getEmojiByName("CONTROL.MENU", "id")).setStyle("SECONDARY").setDisabled(true),
                new MessageButton().setCustomId("right").setEmoji(getEmojiByName("CONTROL.RIGHT", "id")).setStyle("SECONDARY").setDisabled(true),
                new MessageButton().setCustomId("close").setEmoji(getEmojiByName("CONTROL.CROSS", "id")).setStyle("DANGER").setDisabled(true)
            ])]
        });
    }
}