import { Client, TextChannel } from 'discord.js';
import dedent from 'ts-dedent';
import { ImplementableApi } from './implementableApi';

namespace DiscordParser {
    export type Config = ImplementableApi.Config & {
        token: string;
        channelsId: {
            idChannelYtb: string;
            idChannelPeerTube: string;
        };
        keyWord: string;
    };
}

///Penser a split mes event peertube Ytb en 2 channel differents
class DiscordParser extends ImplementableApi {
    readonly token: string;
    readonly keyWord: string;
    readonly channels: {
        readonly ChannelYtb: TextChannel;
        readonly ChannelPeerTube: TextChannel;
    };
    readonly client: Client;

    constructor(readonly config: DiscordParser.Config) {
        super(config);
        this.token = config.token;
        this.keyWord = config.keyWord;
        this.settingEvents();
        this.client = this.instantiateClient();
        this.channels = this.setChannel(config.channelsId);
    }

    private setChannel(ids: {
        [key: string]: string;
        idChannelYtb: string;
        idChannelPeerTube: string;
    }): {
        ChannelYtb: TextChannel;
        ChannelPeerTube: TextChannel;
    } {
        let resp: {
            [key: string]: TextChannel | undefined;
            ChannelYtb?: TextChannel;
            ChannelPeerTube?: TextChannel;
        } = {};
        // construct and check the channels
        for (const key in ids) {
            if (ids[key]) {
                const tmpChannel = this.client.channels.resolve(ids[key]);
                if (tmpChannel)
                    if (tmpChannel instanceof TextChannel)
                        resp[key] = tmpChannel;
                    else throw new Error('The channel must be a TextChannel');
                else
                    throw new Error(
                        dedent`The channel cannot be found by the bot. 
                Check if you had the bot to your server or if the channel ID is correct`
                    );
            }
        }
        // return the well formed object
        if (resp.ChannelPeerTube)
            if (resp.ChannelYtb)
                return {
                    ChannelPeerTube: resp.ChannelPeerTube,
                    ChannelYtb: resp.ChannelYtb,
                };
        throw new Error('Theres an issue concerned the channel check');
    }

    private instantiateClient(): Client {
        const newClient = new Client();
        newClient.login(this.token);
        return newClient;
    }

    public receivedMessage(message: ImplementableApi.Message) {
        switch (message.type) {
            case 'newEntriesNotify':
                this.sendMsgYtb(
                    `New YouTubes entries received :\n${JSON.parse(
                        message.rawContent
                    ).items.map((item: any) => `Author : ${item.author}`)}`
                );
            default:
                break;
        }
    }

    private sendMsgYtb(message: string) {
        this.channels.ChannelYtb.send(message);
    }
    private sendMsgPeerTube(message: string) {
        this.channels.ChannelPeerTube.send(message);
    }

    private settingEvents(): void {
        this.client.on('message', (message) => {
            const msg_splitted = message.content.split(' ');
            if (msg_splitted[0] === this.keyWord) {
                // if (!this.channel) {
                //     this.channel = message.channel;
                // }
                switch (msg_splitted[1]) {
                    case 'add':
                }
            }
        });
    }
}

export { DiscordParser };