class AnimeAV1 {

    constructor() {
        this.type = "anime-board"; // Required for scanner
        this.api = "https://animeav1.com";
    }

    getSettings() {
        return {
            episodeServers: ["HLS", "HLS-DUB"],
            supportsDub: true,
        };
    }

    async search(query) {
        const res = await fetch(`${this.api}/api/search`, {
            method: "POST",
            headers: { "Content-Type": "application/json" },
            body: JSON.stringify({ query: query.query }),
        });

        if (!res.ok) return [];

        const data = await res.json();

        return data.map(anime => ({
            id: anime.title.toLowerCase().replace(/\s+/g, '-'),
            title: anime.title,
            url: `${this.api}/anime/${anime.slug}`,
            subOrDub: "both",
        }));
    }

    async getMetadata(id) {
        const html = await fetch(`${this.api}/media/${id}`).then(r => r.text());
        const parsed = this.parseSvelteData(html);
        const media = parsed.find(x => x?.data?.media)?.data.media ?? {};

        // IMAGE
        const imageMatch = html.match(/<img[^>]*class="aspect-poster[^"]*"[^>]*src="([^"]+)"/i);
        const image = imageMatch ? imageMatch[1] : null;

        // BLOCK INFO (STATUS, SEASON, YEAR)
        const infoBlockMatch = html.match(
            /<div class="flex flex-wrap items-center gap-2 text-sm">([\s\S]*?)<\/div>/
        );

        let status = media.status ?? "Unknown";
        let season = media.seasons ?? null;
        let year = media.startDate ? Number(media.startDate.slice(0, 4)) : null;

        if (infoBlockMatch) {
            const raw = infoBlockMatch[1];

            // Extraer spans internos
            const spans = [...raw.matchAll(/<span[^>]*>([^<]+)<\/span>/g)].map(m => m[1].trim());

            // EJEMPLO:
            // ["TV Anime", "•", "2025", "•", "Temporada Otoño", "•", "En emisión"]

            const clean = spans.filter(x => x !== "•");

            // YEAR
            const yearMatch = clean.find(x => /^\d{4}$/.test(x));
            if (yearMatch) year = Number(yearMatch);

            // SEASON (el que contiene "Temporada")
            const seasonMatch = clean.find(x => x.toLowerCase().includes("temporada"));
            if (seasonMatch) season = seasonMatch;

            // STATUS (normalmente "En emisión", "Finalizado", etc)
            const statusMatch = clean.find(x =>
                /emisión|finalizado|completado|pausa|cancelado/i.test(x)
            );
            if (statusMatch) status = statusMatch;
        }

        return {
            title: media.title ?? "Unknown",
            summary: media.synopsis ?? "No summary available",
            episodes: media.episodesCount ?? 0,
            characters: [],
            season,
            status,
            studio: "Unknown",
            score: media.score ?? 0,
            year,
            genres: media.genres?.map(g => g.name) ?? [],
            image
        };
    }


    async findEpisodes(id) {
        const html = await fetch(`${this.api}/media/${id}`).then(r => r.text());
        const parsed = this.parseSvelteData(html);

        const media = parsed.find(x => x?.data?.media)?.data?.media;
        if (!media?.episodes) throw new Error("No se encontró media.episodes");

        return media.episodes.map((ep, i) => ({
            id: `${media.slug}$${ep.number ?? i + 1}`,
            number: ep.number ?? i + 1,
            title: ep.title ?? `Episode ${ep.number ?? i + 1}`,
            url: `${this.api}/media/${media.slug}/${ep.number ?? i + 1}`,
        }));
    }

    async findEpisodeServer(episodeOrId, _server) {
        const ep = typeof episodeOrId === "string"
            ? (() => { try { return JSON.parse(episodeOrId); } catch { return { id: episodeOrId }; } })()
            : episodeOrId;

        const pageUrl = ep.url ?? (
            typeof ep.id === "string" && ep.id.includes("$")
                ? `${this.api}/media/${ep.id.split("$")[0]}/${ep.number ?? ep.id.split("$")[1]}`
                : undefined
        );

        if (!pageUrl) throw new Error("No se pudo determinar la URL del episodio.");

        const html = await fetch(pageUrl, {
            headers: { Cookie: "__ddg1_=;__ddg2_=;" },
        }).then(r => r.text());

        const parsedData = this.parseSvelteData(html);
        const entry = parsedData.find(x => x?.data?.embeds) || parsedData[3];
        const embeds = entry?.data?.embeds;
        if (!embeds) throw new Error("No se encontraron 'embeds' en los datos del episodio.");

        const selectedEmbeds =
            _server === "HLS"
                ? embeds.SUB ?? []
                : _server === "HLS-DUB"
                    ? embeds.DUB ?? []
                    : (() => { throw new Error(`Servidor desconocido: ${_server}`); })();

        if (!selectedEmbeds.length)
            throw new Error(`No hay mirrors disponibles para ${_server === "HLS" ? "SUB" : "DUB"}.`);

        const match = selectedEmbeds.find(m =>
            (m.url || "").includes("zilla-networks.com/play/")
        );

        if (!match)
            throw new Error(`No se encontró ningún embed de ZillaNetworks en ${_server}.`);

        return {
            server: _server,
            headers: { Referer: 'null' },
            videoSources: [
                {
                    url: match.url.replace("/play/", "/m3u8/"),
                    type: "m3u8",
                    quality: "auto",
                    subtitles: [],
                },
            ],
        };
    }

    parseSvelteData(html) {
        const scriptMatch = html.match(/<script[^>]*>\s*({[^<]*__sveltekit_[\s\S]*?)<\/script>/i);
        if (!scriptMatch) throw new Error("No se encontró bloque SvelteKit en el HTML.");

        const dataMatch = scriptMatch[1].match(/data:\s*(\[[\s\S]*?\])\s*,\s*form:/);
        if (!dataMatch) throw new Error("No se encontró el bloque 'data' en el script SvelteKit.");

        const jsArray = dataMatch[1];
        try {
            return new Function(`"use strict"; return (${jsArray});`)();
        } catch {
            const cleaned = jsArray.replace(/\bvoid 0\b/g, "null").replace(/undefined/g, "null");
            return new Function(`"use strict"; return (${cleaned});`)();
        }
    }
}

module.exports = AnimeAV1;