const axios = require('axios');
const cheerio = require('cheerio');
const Manga = require('../models/manga');
const Chapter = require('../models/chapter');
const connectors = require('../connectors.json');

class MangaController {
    constructor() {}

    async fetchAndStoreMangas(connectorId, localisation) {
        const connectorsToFetch = connectors.filter((config) => {
            const matchesConnectorId = !connectorId || config.id === connectorId;
            const matchesLocalisation = !localisation || config.localisation === localisation;
            return matchesConnectorId && matchesLocalisation;
        });

        for (const config of connectorsToFetch) {
            await this.fetchMangas(config);
        }
    }

    async fetchMangas(config) {
        let page = 1;
        let shouldContinue = true;

        while (shouldContinue) {
            const pageUrl = config.paramSup !== "null" ? `${config.url}${config.paramSup}${page}` : config.url;
            shouldContinue = config.paramSup !== "null";

            try {
                const response = await axios.get(pageUrl);
                const $ = cheerio.load(response.data);

                const titleElements = $(config.titleSelector);
                const imageElements = $(config.imageMangaSelector);
                const linkElements = $(config.chapterPage);

                if (!titleElements.length || !imageElements.length || !linkElements.length) break;

                const mangasOnPage = [];

                for (let i = 0; i < titleElements.length; i++) {
                    const title = $(titleElements[i]).text().trim();
                    const imageUrl = $(imageElements[i]).attr(config.attributManga) || '';
                    let linkChapter = $(linkElements[i]).attr('href') || '';
                    if (linkChapter.startsWith('/')) linkChapter = config.baseUrl + linkChapter;

                    if (!title) continue;

                    try {
                        const mangaPageResponse = await axios.get(linkChapter);
                        const $$ = cheerio.load(mangaPageResponse.data);

                        const description = $$(config.description).text().trim() || 'Not available';
                        const categories = [];

                        const categorieElement = $$(config.categorieElement);
                        const categoriesSelector = config.categorieElement === config.categories
                            ? $$(config.categorieElement)
                            : categorieElement.find(config.categories);

                        categoriesSelector.each((_, elem) => {
                            categories.push($$(elem).text().trim());
                        });

                        const rate = $$(config.rate).text().trim() || '0';

                        const chapters = await this.fetchChapters(linkChapter, config);

                        // Enregistrer le manga dans la base de données
                        const [manga, created] = await Manga.findOrCreate({
                            where: { title },
                            defaults: {
                                connectorId: config.id,
                                connectorName: config.name,
                                imageUrl,
                                linkChapter,
                                description,
                                categories,
                                rate,
                            },
                        });

                        if (!created) {
                            // Mettre à jour le manga existant
                            await manga.update({
                                connectorId: config.id,
                                connectorName: config.name,
                                imageUrl,
                                linkChapter,
                                description,
                                categories,
                                rate,
                            });
                        }

                        // Enregistrer les chapitres
                        for (const chapterData of chapters) {
                            await Chapter.findOrCreate({
                                where: { chapterLink: chapterData.chapterLink },
                                defaults: {
                                    ...chapterData,
                                    mangaId: manga.id,
                                },
                            });
                        }
                    } catch (e) {
                        console.error(`Erreur lors du traitement du manga ${title}: ${e.message}`);
                        continue;
                    }
                }
                page++;
            } catch (e) {
                console.error(`Erreur lors de la récupération de la page ${pageUrl}: ${e.message}`);
                shouldContinue = false;
            }
        }
    }

    async fetchChapters(linkChapter, config) {
        try {
            const response = await axios.get(linkChapter);
            const $ = cheerio.load(response.data);

            const chapterElements = $(config.chapterSelector);

            const chapters = [];

            chapterElements.each((_, elem) => {
                const chapterNum = $(elem).find(config.chapterNumSelector).text().trim() || 'N/A';
                let chapterLink = $(elem).find(config.chapterTitleSelector).attr('href') || '';
                const chapterTitle = $(elem).find(config.chapterTitleSelector).text().replace(/^\s+|\s+$/g, '') || 'N/A';
                const chapterDate = $(elem).find(config.chapterDateSelector).text().trim() || '';

                if (chapterLink.startsWith('/')) chapterLink = config.baseUrl + chapterLink;
                console.log(chapterTitle)
                chapters.push({
                    chapterNum,
                    chapterTitle,
                    chapterLink,
                    chapterDate,
                });
            });

            return chapters;
        } catch (e) {
            console.error(`Erreur lors de la récupération des chapitres: ${e.message}`);
            return [];
        }
    }
}

module.exports = new MangaController();