import html, { HTMLElement } from "node-html-parser";
import request from "request-promise-native";
import { Response } from "request";
import { INewsItem, IAggregator } from "./aggregator";
import { getRepository } from "typeorm";
import { AggroNewsItem } from "../../entity/AggroNewsItem";

const kissDiaryRoot = "https://com3d2.world/r18/notices.php";
const FEED_NAME = "com3d2-world-notices";

async function aggregate() {
    let repo = getRepository(AggroNewsItem);
    
    let lastPost = await repo.findOne({
        select: [ "newsId" ],
        where: { feedName: FEED_NAME },
        order: { newsId: "DESC" }
    });

    try {
        let mainPageRes = await request(kissDiaryRoot, {resolveWithFullResponse: true}) as Response;
        
        if(mainPageRes.statusCode != 200)
            return [];

        let rootNode = html.parse(mainPageRes.body, {
                pre: true,
                script: false,
                style: false
        });

        if(!(rootNode instanceof HTMLElement))
            return;

        let diaryEntries = rootNode.querySelectorAll("div.frame a");

        if(!diaryEntries) {
            console.log("[COM3D2 WORLD BLOG] Failed to find listing!");
        }

        let result : INewsItem[] = [];
        let latestEntry = lastPost.newsId;

        for(let a of diaryEntries) {
            if(!a.rawAttributes.id)
                continue;
            
            let id = +a.rawAttributes.id;

            if(id <= lastPost.newsId)
                continue;

            if(id > latestEntry)
                latestEntry = id;

            let diaryLink = `${kissDiaryRoot}?no=${id}`;
            let res = await request(diaryLink, {resolveWithFullResponse: true}) as Response;
            if(res.statusCode != 200)
                continue;

            let node = html.parse(res.body, {
                pre: true,
                script: false,
                style: false
            });

            if(!(node instanceof HTMLElement))
                continue;

            let title = node.querySelector("div.frame div.notice_title th");
            let contents = node.querySelectorAll("div.frame div")[1];

            result.push({
                newsId: id,
                feedId: FEED_NAME,
                link: diaryLink,
                title: title.text,
                author: "com3d2.world",
                contents: contents.outerHTML,
                embedColor: 0xa39869
            });
        }
        return result;
    } catch(err) {
        return [];
    }
}

export default {
    aggregate: aggregate
} as IAggregator;