import { load as parseHTML } from "cheerio";
import { isUrlAbsolute } from "@libs/isAbsoluteUrl";
import { fetchApi, fetchFile } from "@libs/fetch";
import { Plugin } from "@typings/plugin";
import { Filters, FilterTypes } from "@libs/filterInputs";
import dayjs from "dayjs";

class ReadLiteNovel implements Plugin.PluginBase {
    id = "rln.app";
    name = "ReadLiteNovel";
    version = "1.0.0";
    icon = "src/en/readlitenovel/icon.png";
    site = "https://rln.app";

    parseAgoDate(date: string | undefined){ //parseMadaraDate
        if (date?.includes("ago")) {
            const dayJSDate = dayjs(new Date()); // today
            const timeAgo = date.match(/\d+/)?.[0] || "";
            const timeAgoInt = parseInt(timeAgo, 10);
    
            if (!timeAgo) return null; // there is no number!
    
            if (date.includes("hours ago") || date.includes("hour ago")) {
                dayJSDate.subtract(timeAgoInt, "hours"); // go back N hours
            }
    
            if (date.includes("days ago") || date.includes("day ago")) {
                dayJSDate.subtract(timeAgoInt, "days"); // go back N days
            }
    
            if (date.includes("months ago") || date.includes("month ago")) {
                dayJSDate.subtract(timeAgoInt, "months"); // go back N months
            }

            if (date.includes("years ago") || date.includes("year ago")) {
                dayJSDate.subtract(timeAgoInt, "years"); // go back N years
            }

            return dayJSDate.toISOString();
        }
        return null; // there is no "ago" so give up
    };

    async popularNovels(
        page: number, 
        { filters }: Plugin.PopularNovelsOptions<typeof this.filters>
    ): Promise<Plugin.NovelItem[]> {
        const link = `${this.site}/ranking/${filters.order.value}/${page}`;
        const result = await fetchApi(link);
        const body = await result.text();

        const loadedCheerio = parseHTML(body);

        const novels: Plugin.NovelItem[] = [];

        loadedCheerio(".category-items li").each((i,el) => {
            const novelUrl = loadedCheerio(el)
                .find(".category-name a")
                .attr("href");

            if (!novelUrl) return;
            const novelName = loadedCheerio(el)
                .find(".category-name a")
                .text()
                .trim();
            let novelCover = loadedCheerio(el)
                .find(".category-img img")
                .attr("src");

            if (novelCover && !isUrlAbsolute(novelCover)) {
                novelCover = this.site + novelCover;
            }

            const novel = {
                path: novelUrl?.replace(this.site, ''),
                name: novelName,
                cover: novelCover,
            };
            novels.push(novel);
            })
        return novels;
    };

    async parseNovel(novelPath: string): Promise<Plugin.SourceNovel> {
        const result = await fetchApi(this.site + novelPath);
        const body = await result.text();

        const loadedCheerio = parseHTML(body);

        const novel: Plugin.SourceNovel = {
            path: novelPath,
            name: loadedCheerio(".novel-title").text() || "Untitled",
            cover: loadedCheerio(".novels-detail img").attr("src"),
            summary: loadedCheerio('.empty-box').text().trim(),
            chapters: [],
        };

        loadedCheerio('.novels-detail-right li').each((i,el) => {
            const detailName = loadedCheerio(el).find('div:first').text();
            const detail = loadedCheerio(el).find('div:last');

            switch(detailName){
                case "Status:":
                    novel.status = detail.text();
                    break;
                case "Genres:":
                    novel.genres = detail.find('a')
                        .map((i,el) => loadedCheerio(el).text())
                        .toArray()
                        .join(', ') || detail.text();
                    break;
                case "Author(s):":
                    novel.author = detail.find('a')
                        .map((i,el) => loadedCheerio(el).text())
                        .toArray()
                        .join(', ') || detail.text();
                    break;
                case "Translator:":
                    novel.artist = detail.text();
                    break;
            }
        })
        const chapter: Plugin.ChapterItem[] = [];
        loadedCheerio(".cm-tabs-content li").each((i,el) => {
            const chapterUrl = loadedCheerio(el).find("a").attr("href");
            if (!chapterUrl) return;
            const chapterName = loadedCheerio(el).find("a").text().trim();
            const releaseDate = this.parseAgoDate(
                loadedCheerio(el).find('svg').attr('data-bs-original-title')!
            );

            chapter.push({
                name: chapterName,
                path: chapterUrl?.replace(this.site, ''),
                releaseTime: releaseDate,
            })})

        novel.chapters = chapter;
        return novel;
    };

    async parseChapter(chapterPath: string): Promise<string> {
        const result = await fetchApi(this.site + chapterPath);
        const body = await result.text();

        const loadedCheerio = parseHTML(body);

        const chapterText = loadedCheerio("#chapterText").html() || "";

        return chapterText;
    };

    async searchNovels(searchTerm: string, pageNo: number): Promise<Plugin.NovelItem[]> {
        const url = this.site + `/search/autocomplete?dataType=json&query=${searchTerm}`;
        const result = await fetchApi(url);
        const body = await result.json();
        const novels: Plugin.NovelItem[] = [];

        body.results.forEach((item: {link: string; original_title:string; image:string;}) => 
            novels.push({
                path: item.link,
                name: item.original_title,
                cover: item.image,
            })
        );

        return novels;
    };

    async fetchImage(url: string): Promise<string | undefined> {
        return fetchFile(url);
    }

    filters = {
        order: {
            value: "top-rated",
            label: "Order by",
            options: [
                { label: "MOST VIEWED", value: "most-viewed" },
                { label: "TOP RATED", value: "top-rated" },
                { label: "BOOKMARKS", value: "subscribers" },
                { label: "NEW", value: "new" },
            ],
            type: FilterTypes.Picker,
        },
    } satisfies Filters;
}

export default new ReadLiteNovel();