import {
    Guild,
    Client,
    GuildMember,
    IntentsBitField,
    Interaction,
    Message,
    TextChannel,
    BaseGuildTextChannel,
    TextBasedChannelMixin,
    ChannelType,
    BaseGuildVoiceChannel,
    InteractionType
} from 'discord.js';

import Logger from '../libs/Logger';
import Environment from './Environment';

import Discord_Core from '../discord/Core';
import Discord_Settings from '../discord/Settings';
import Discord_Ping from '../discord/Ping';
import Discord_Help from '../discord/Help';
import Discord_Invite from '../discord/Invite';
import Discord_Say from '../discord/Say';
import Discord_InteractionManager from '../discord/InteractionManager';
import Discord_MembershipScreening from '../discord/MembershipScreening';
import Discord_osu from '../discord/osu';
import Discord_VRChat from '../discord/VRChat';
import Discord_VRChatLogin from '../discord/Developer/VRChatLogin';
import Discord_UserInfo from '../discord/UserInfo';
import Discord_Stats from '../discord/Stats';
import Discord_Support from '../discord/Support';

import Discord_MusicPlayer_Play from '../discord/MusicPlayer/Play';
import Discord_MusicPlayer_PlayMy from '../discord/MusicPlayer/PlayMy';
import Discord_MusicPlayer_Skip from '../discord/MusicPlayer/Skip';
import Discord_MusicPlayer_Join from '../discord/MusicPlayer/Join';
import Discord_MusicPlayer_Leave from '../discord/MusicPlayer/Leave';
import Discord_MusicPlayer_Queue from '../discord/MusicPlayer/Queue';
import Discord_MusicPlayer_Search from '../discord/MusicPlayer/Search';
import Discord_MusicPlayer_NowPlaying from '../discord/MusicPlayer/NowPlaying';
import Discord_MusicPlayer_Loop from '../discord/MusicPlayer/Loop';
import Discord_MusicPlayer_Pause from '../discord/MusicPlayer/Pause';
import Discord_MusicPlayer_Resume from '../discord/MusicPlayer/Resume';

import Discord_Developer_ServiceAnnouncement from '../discord/Developer/ServiceAnnouncement';
import Discord_Developer_Debug from '../discord/Developer/Debug';

import Cache from './Cache';
import DiscordModule from '../utils/DiscordModule';

const LOGGING_TAG = '[DiscordProvider]';

class Discord {
    public client: Client;
    private loaded_module = new Map<string, DiscordModule>();

    constructor() {
        this.client = new Client({
            intents: [
                IntentsBitField.Flags.MessageContent,
                IntentsBitField.Flags.Guilds,
                IntentsBitField.Flags.GuildMessages,
                IntentsBitField.Flags.GuildMembers,
                IntentsBitField.Flags.GuildPresences,
                IntentsBitField.Flags.GuildVoiceStates
            ]
        });
    }

    public init(): void {
        Logger.info('Logging in to discord');
        this.client.login(Environment.get().DISCORD_TOKEN);

        const modules: DiscordModule[] = [
            new Discord_Core(),
            new Discord_Help(),
            new Discord_Invite(),
            new Discord_Ping(),
            new Discord_Stats(),
            new Discord_UserInfo(),
            new Discord_Say(),
            new Discord_InteractionManager(),
            new Discord_osu(),
            new Discord_VRChat(),
            new Discord_VRChatLogin(),
            new Discord_Settings(),
            new Discord_Support(),

            new Discord_MusicPlayer_Play(),
            new Discord_MusicPlayer_PlayMy(),
            new Discord_MusicPlayer_NowPlaying(),
            new Discord_MusicPlayer_Skip(),
            new Discord_MusicPlayer_Join(),
            new Discord_MusicPlayer_Leave(),
            new Discord_MusicPlayer_Queue(),
            new Discord_MusicPlayer_Search(),
            new Discord_MusicPlayer_Loop(),
            new Discord_MusicPlayer_Pause(),
            new Discord_MusicPlayer_Resume(),

            new Discord_MembershipScreening(),

            new Discord_Developer_ServiceAnnouncement(),
            new Discord_Developer_Debug()
        ];

        for (const _module of modules) {
            if (_module.id) {
                if (this.loaded_module.has(_module.id))
                    Logger.error(
                        `Module ${_module.constructor.name} is trying to assign a conflicting module id ${
                            _module.id
                        }. ${this.loaded_module.get(_module.id)!.constructor.name} is already assigned to this id.`
                    );
                else {
                    Logger.verbose(LOGGING_TAG, `Loaded module ${_module.constructor.name}`);
                    this.loaded_module.set(_module.id, _module);
                }
            } else Logger.error(`Invalid module ${_module.constructor.name}. The module does not have an id.`);
        }

        Logger.info(`Loaded ${this.loaded_module.size} Discord Modules`);

        for (const module of this.loaded_module) {
            let thisModule: DiscordModule = module[1];
            Logger.verbose(LOGGING_TAG, `Initializing module ${thisModule.constructor.name}`);
            thisModule.Init();
        }

        // On bot logged in
        this.client.on('ready', () => {
            for (const module of this.loaded_module) {
                let thisModule: DiscordModule = module[1];
                Logger.verbose(LOGGING_TAG, `Triggering 'ready' event for module ${thisModule.constructor.name}`);
                thisModule.Ready();
            }
        });

        // Member join guild event to modules
        this.client.on('guildMemberAdd', (member: GuildMember) => {
            for (const module of this.loaded_module) {
                let thisModule: DiscordModule = module[1];
                Logger.verbose(
                    LOGGING_TAG,
                    `Triggering 'guildMemberAdd' event for module ${thisModule.constructor.name}`
                );
                thisModule.GuildMemberAdd(member);
            }
        });

        // Interaction create event to modules
        this.client.on('interactionCreate', async (interaction: Interaction) => {
            if (!Cache.isUserCached(interaction.user.id)) await Cache.updateUserCache(interaction.user.id);

            for (const module of this.loaded_module) {
                let thisModule: DiscordModule = module[1];

                if (interaction.guild) {
                    thisModule.GuildInteractionCreate(interaction);

                    if (
                        interaction.type === InteractionType.ApplicationCommand &&
                        interaction.commandName &&
                        thisModule.commandInteractionName
                    ) {
                        thisModule.GuildCommandInteractionCreate(interaction);
                        if (interaction.commandName.toLowerCase() === thisModule.commandInteractionName) {
                            Logger.verbose(
                                LOGGING_TAG,
                                `Triggering 'GuildModuleCommandInteractionCreate' event for module ${thisModule.constructor.name}`
                            );
                            thisModule.GuildModuleCommandInteractionCreate(interaction);
                        }
                    } else if (interaction.isButton()) {
                        Logger.verbose(
                            LOGGING_TAG,
                            `Triggering 'GuildButtonInteractionCreate' event for module ${thisModule.constructor.name}`
                        );
                        thisModule.GuildButtonInteractionCreate(interaction);
                    } else if (interaction.isSelectMenu()) {
                        Logger.verbose(
                            LOGGING_TAG,
                            `Triggering 'GuildSelectMenuInteractionCreate' event for module ${thisModule.constructor.name}`
                        );
                        thisModule.GuildSelectMenuInteractionCreate(interaction);
                    }
                }

                //thisModule.InteractionCreate(interaction);
            }
        });

        // Message create event to modules
        this.client.on('messageCreate', (message: Message) => {
            for (const module of this.loaded_module) {
                let thisModule: DiscordModule = module[1];
                // This spamms too much logs
                //Logger.verbose(
                //    LOGGING_TAG,
                //    `Triggering 'messageCreate' event for module ${thisModule.constructor.name}`
                //);
                thisModule.GuildMessageCreate(message);
            }
        });

        // Joined guild event to modules
        this.client.on('guildCreate', (guild: Guild) => {
            for (const module of this.loaded_module) {
                let thisModule: DiscordModule = module[1];
                Logger.verbose(LOGGING_TAG, `Triggering 'guildCreate' event for module ${thisModule.constructor.name}`);
                thisModule.GuildCreate(guild);
            }
        });

        // Handling guild commands
        this.client.on('messageCreate', async (message: Message) => {
            if (!(message.channel instanceof BaseGuildTextChannel || message.channel instanceof BaseGuildVoiceChannel))
                return;
            if (message.author.bot) return;
            if (typeof message.guild?.id === 'undefined') return;

            let GuildCache = await Cache.getCachedGuild(message.guild.id);
            if (typeof GuildCache === 'undefined' || typeof GuildCache.prefix === 'undefined') return;

            if (!message.content.startsWith(GuildCache.prefix)) return;

            let noPrefixMessage = message.content.replace(GuildCache.prefix, '');
            let symbols = [
                '!',
                '@',
                '#',
                '$',
                '%',
                '^',
                '&',
                '*',
                '(',
                ')',
                '-',
                '=',
                '_',
                '+',
                '\\',
                '/',
                '<',
                '>',
                '[',
                ']',
                '{',
                '}',
                '`',
                '"',
                "'",
                ',',
                '.',
                '~',
                '|',
                ';',
                ':',
                '?',
                '、',
                '。'
            ];

            const isTag = (prefix: string) => {
                return (
                    (prefix.startsWith('<@!') && prefix.endsWith('>')) ||
                    (prefix.startsWith('<:') && prefix.endsWith('>')) ||
                    (prefix.startsWith('<a:') && prefix.endsWith('>')) ||
                    (prefix.startsWith('<#') && prefix.endsWith('>'))
                );
            };

            if (GuildCache.prefix.indexOf(' ') >= 0) {
                if (noPrefixMessage.charAt(0) !== ' ') return;
            } else {
                if (symbols.includes(GuildCache.prefix.charAt(GuildCache.prefix.length - 1))) {
                    if (noPrefixMessage.charAt(0) === ' ') {
                        //Handle for "@Bot <command>"
                        if (isTag(GuildCache.prefix)) {
                        } else return;
                    } else {
                        //Handle for "@Bot<command>"
                        if (isTag(GuildCache.prefix)) return;
                    }
                } else {
                    if (noPrefixMessage.charAt(0) !== ' ') return;
                }
            }

            if (noPrefixMessage === '') return;
            if (noPrefixMessage.charAt(0) === ' ') {
                noPrefixMessage = noPrefixMessage.substring(1);
            }

            let args = noPrefixMessage.split(' ');
            args = args.filter((e) => e !== '');

            let command = args[0];

            args.shift();

            if (args.length === 0) args = [];

            if (!Cache.isUserCached(message.author.id)) await Cache.updateUserCache(message.author.id);

            Logger.verbose(
                LOGGING_TAG,
                `Triggering 'GuildOnCommand (Message)' event to loaded modules for command ${command} by ${message.author.username} (${message.author.id}) in ${message.guild.name} (${message.guild.id})`
            );

            for (const module of this.loaded_module) {
                let thisModule: DiscordModule = module[1];
                thisModule.GuildOnCommand(command, args, message);

                if (thisModule.commands && thisModule.commands.includes(command))
                    thisModule.GuildOnModuleCommand(args, message);
            }
        });

        // Handling mentions
        this.client.on('messageCreate', async (message: Message) => {
            // TODO: Handle DMs commands soon
            if (!(message.channel instanceof BaseGuildTextChannel || message.channel instanceof BaseGuildVoiceChannel))
                return;
            if (message.author.bot) return;

            if (typeof message.guild?.id === 'undefined') return;
            if (!message.mentions.users) return;

            if (message.mentions.users.first()?.id !== this.client.user?.id) return;
            if (
                !message.content.startsWith(`<@!${this.client.user?.id}>`) &&
                !message.content.startsWith(`<@${this.client.user?.id}>`)
            )
                return;

            let args = message.content.split(' ');
            let command = args[1];

            args.shift();
            args.shift();
            args = args.filter((e) => e !== '');

            if (args.length === 0) args = [];

            if (!Cache.isUserCached(message.author.id)) await Cache.updateUserCache(message.author.id);

            for (const module of this.loaded_module) {
                let thisModule: DiscordModule = module[1];
                Logger.verbose(
                    LOGGING_TAG,
                    `Triggering 'GuildOnCommand (Mention)' event for module ${thisModule.constructor.name}`
                );
                thisModule.GuildOnCommand(command, args, message);

                if (thisModule.commands && thisModule.commands.includes(command))
                    thisModule.GuildOnModuleCommand(args, message);
            }
        });
    }
}

export default new Discord();