import Discord, { Client, ClientOptions, GatewayIntentBits, Collection, Events, Interaction, MessagePayload, InteractionReplyOptions, InteractionResponse, BooleanCache, Message, CommandInteraction, AutocompleteInteraction } from "discord.js";
import { interactionHandlers } from "./InteractionHandler";
import { slashCommandHandlers } from "./SlashCommand";

import { pathToFileURL } from 'url';
import { utils } from "../functions/index"
import { z } from "zod";

import * as path from 'path';
import { ISlashCommandHandler } from "./SlashCommand";

const allIntents: GatewayIntentBits[] = [
    GatewayIntentBits.Guilds,
    GatewayIntentBits.MessageContent,
    GatewayIntentBits.GuildMessages,
    GatewayIntentBits.GuildMembers,
    GatewayIntentBits.GuildPresences,
    GatewayIntentBits.GuildMessageReactions,
    GatewayIntentBits.GuildMessageTyping,
    GatewayIntentBits.DirectMessages,
    GatewayIntentBits.DirectMessageReactions,
    GatewayIntentBits.DirectMessageTyping
];

interface CustomOptions {
    autoImport?: string[];
    intents?: GatewayIntentBits[];
}

export default class FastClient extends Client {

    customOptions?: CustomOptions;
    slashCommands: Collection<string, ISlashCommandHandler> = new Collection();
    slashArray: any[] = [];

    constructor({ autoImport, intents }: { autoImport?: string[], intents?: GatewayIntentBits[] } = {}) {
        
        const intentsValidation = z.array(z.nativeEnum(GatewayIntentBits), { invalid_type_error: "Intents list must be a GatewayIntentBits object from discord" });
        intentsValidation.parse(intents || allIntents);

        const customOptions = { autoImport, intents };
        const options: ClientOptions = {
            intents: customOptions.intents || allIntents
        };

        super(options);
        this.customOptions = customOptions;
    }

    public async login(token: string): Promise<string> {

        const tokenValidation = z.string({ required_error: "Token is required", invalid_type_error: "Token must be a string" });
        tokenValidation.parse(token);

        const result = super.login(token);
        this.startListening();

        return result;
    }

    public async invokeInteraction(interactionName: string, interaction: Interaction){
        const runInteractionHandler = this.getInteractionCallback(interactionName, interaction) ;
        if (runInteractionHandler) return await runInteractionHandler();
    }

    public async invokeCommand(commandName: string, interaction: Interaction | CommandInteraction){
        const command = this.slashCommands.get(commandName)
                
        if (!command){
            return console.error('Error on interaction! Command not found.');
        }

        await command.run(this, interaction as CommandInteraction);
    }

    public reloadCommands() {
        this.guilds.cache.forEach(guild => guild.commands.set(this.slashArray))
    }
    
    private async loadAutoImportPaths() {
        const root_path = path.resolve();
    
        this.slashCommands = new Discord.Collection();
        const autoImportPath = this.customOptions?.autoImport;
    
        if (autoImportPath) {
            for (const importPath of autoImportPath) {
                const files = utils.getRecursiveFiles(`${root_path}/${importPath}`);
                if (!files) throw new Error(`Auto Import path not found: '${importPath}'. You need to pass a valid path to the components folder`);
    
                for (const file of files) {
                    const isValidFile = file.endsWith('.mjs') || file.endsWith('.js') || file.endsWith(".ts");
                    if (!isValidFile) continue;
    
                    const componentPath = pathToFileURL(file).href;
                    await import(componentPath).catch(err => {
                        throw new Error(`Error on import component: ${err}`)
                    });
                }
            }
        }
    
        for (const [key, value] of slashCommandHandlers.entries()) {
            this.slashCommands.set(key, value);
            this.slashArray.push(value);
        }
    }
    
    private startListening() {

        this.once(Events.ClientReady, async (client) => {
            await this.loadAutoImportPaths();
            this.reloadCommands();
        });

        this.on(Events.InteractionCreate, async (interaction: Interaction) => {
            if (interaction.isCommand()) {
                const command = this.slashCommands.get(interaction.commandName)
                
                if (!command){
                    return interaction.reply({content: 'Error on interaction! Command not found.', ephemeral: true});
                }

                await command.run(this, interaction);
            }

            if (interaction.isAutocomplete()){
                const command = this.slashCommands.get(interaction.commandName)

                if (!command){
                    return console.error('Error on interaction autocomplete! Command not found.');
                }

                if (command.autocomplete){
                    try {
                        await command.autocomplete(this, interaction);
                    } catch (error) {
                        console.error(error);
                    }
                }
            }

            if (interaction.isButton() || interaction.isAnySelectMenu() || interaction.isModalSubmit()){
                const runInteractionHandler = this.getInteractionCallback(interaction.customId, interaction) ;
                if (runInteractionHandler) return await runInteractionHandler();
            }
        });

        this.on(Events.GuildCreate, async () => {
            this.reloadCommands();
        })
    }

    private getInteractionCallback(customId: string, interaction: Interaction | CommandInteraction){
        if (interaction.isButton() || interaction.isAnySelectMenu() || interaction.isCommand() || interaction.isModalSubmit()){

            const useOptionInLastParam = customId.includes("(OILP)");
            customId = customId.replace("(OILP)", "");

            const customId_whitout_params = customId?.split(":")[0]
            const interactionHandler = interactionHandlers.get(customId_whitout_params);

            if (!interactionHandler){
                return console.log(`\x1b[36mInteractionHandler not found for customId: ${customId}\x1b[0m`);
            }

            let params: string[] = [];

            const separate_params = customId.split(":");
            params = separate_params.slice(1);
            
            if (interaction.isAnySelectMenu() && useOptionInLastParam) {
                params.push(interaction.values[0]);
            }

            const callback = interactionHandlers.get(customId_whitout_params)?.run;
            if (!callback) return console.log(`\x1b[36mCallback not found for customId: ${customId}\x1b[0m`);

            // vamos retornar a função para ser chamada posteriormente
            return callback.bind(null, this, interaction, ...params)
        }
    }
}