import Service from 'resource:///com/github/Aylur/ags/service.js';
import * as Utils from 'resource:///com/github/Aylur/ags/utils.js';

// Note: this service is made mainly for waifu.im. Others might work but not as properly
const APISERVICES = {
    'im': {
        'endpoint': 'https://api.waifu.im/search',
        'headers': { 'Accept-Version': 'v5' },
    },
    'nekos': {
        'endpoint': 'https://nekos.life/api/neko',
        'headers': {},
    },
    'pics': {
        'endpoint': 'https://api.waifu.pics/sfw/',
        'headers': {},
    },
};

function paramStringFromObj(params) {
    return Object.entries(params)
        .map(([key, value]) => {
            if (Array.isArray(value)) { // If it's an array, repeat
                if (value.length == 0) return '';
                let thisKey = `${encodeURIComponent(key)}=${encodeURIComponent(value[0])}`
                for (let i = 1; i < value.length; i++) {
                    thisKey += `&${encodeURIComponent(key)}=${encodeURIComponent(value[i])}`;
                }
                return thisKey;
            }
            return `${key}=${value}`;
        })
        .join('&');
}

class WaifuService extends Service {
    _baseUrl = 'https://api.waifu.im/search';
    _mode = 'im'; // Allowed: im
    _responses = [];
    _queries = [];
    _nsfw = false;
    _minHeight = 600;

    static {
        Service.register(this, {
            'initialized': [],
            'clear': [],
            'newResponse': ['int'],
            'updateResponse': ['int'],
        });
    }

    constructor() {
        super();
        this.emit('initialized');
    }

    clear() {
        this._responses = [];
        this._queries = [];
        this.emit('clear');
    }

    get mode() { return this._mode }
    set mode(value) {
        this._mode = value;
        this._baseUrl = APISERVICES[this._mode].endpoint;
    }
    get nsfw() { return this._nsfw }
    set nsfw(value) { this._nsfw = value }
    get queries() { return this._queries }
    get responses() { return this._responses }

    async fetch(msg) {
        // Init
        const userArgs = msg.split(/\s+/);

        let taglist = [];
        this._nsfw = false;
        // Construct body/headers
        for (let i = 0; i < userArgs.length; i++) {
            const thisArg = userArgs[i].trim();
            if (thisArg.length == 0) continue;
            if (thisArg == '--im') this._mode = 'im';
            else if (thisArg == '--nekos') this._mode = 'nekos';
            else if (thisArg.includes('pics')) this._mode = 'pics';
            else if (thisArg.includes('segs') || thisArg.includes('sex') || thisArg.includes('lewd')) this._nsfw = true;
            else {
                taglist.push(thisArg);
                if (['ecchi', 'hentai', 'ero', 'ass', 'paizuri', 'oral', 'milf'].includes(thisArg)) this._nsfw = true;
            }
        }
        const newMessageId = this._queries.length;
        this._queries.push(taglist);
        this.emit('newResponse', newMessageId);
        const params = {
            'included_tags': taglist,
            'height': `>=${this._minHeight}`,
            'nsfw': this._nsfw,
        };
        const paramString = paramStringFromObj(params);
        // Fetch
        // Note: body isn't included since passing directly to url is more reliable
        const options = {
            method: 'GET',
            headers: APISERVICES[this._mode].headers,
        };
        let status = 0;
        Utils.fetch(`${APISERVICES[this._mode].endpoint}?${paramString}`, options)
            .then(result => {
                status = result.status;
                return result.text();
            })
            .then((dataString) => { // Store interesting stuff and emit
                const parsedData = JSON.parse(dataString);
                if (!parsedData.images) this._responses.push({ // Failed
                    status: status,
                    signature: -1,
                    url: '',
                    extension: '',
                    source: '',
                    dominant_color: '#383A40',
                    is_nsfw: false,
                    width: 0,
                    height: 0,
                    tags: [],
                });
                else {
                    const imageData = parsedData.images[0];
                    this._responses.push({
                        status: status,
                        signature: imageData?.signature || -1,
                        url: imageData?.url || undefined,
                        extension: imageData.extension,
                        source: imageData?.source,
                        dominant_color: imageData?.dominant_color || '#9392A6',
                        is_nsfw: imageData?.is_nsfw || false,
                        width: imageData?.width || 0,
                        height: imageData?.height || 0,
                        tags: imageData?.tags.map(obj => obj["name"]) || [],
                    });
                }
                this.emit('updateResponse', newMessageId);
            })
            .catch(print);
    }
}

export default new WaifuService();