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path: root/src/lib/Media/manga.ts
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import { recentMediaActivities, type Media } from '$lib/AniList/media';
import manga from '../../stores/manga';
import settings from '../../stores/settings';
import type { UserIdentity } from '../AniList/identity';
import { chapterDatabase } from './chapters';

export const pruneAllManga = async () => {
	const all = await chapterDatabase.chapters.toArray();
	const ids = all.map((m) => m.id);

	manga.set('');
	await chapterDatabase.chapters.bulkDelete(ids);
};

export const volumeCount = async (manga: Media): Promise<number | null> =>
	(await chapterDatabase.chapters.get(manga.id))?.volumes as number | null;

export const chapterCount = async (
	identity: UserIdentity,
	manga: Media,
	disableGuessing: boolean
	// preferActivity = false
): Promise<number | null> => {
	const chapters = await chapterDatabase.chapters.get(manga.id);

	if (chapters !== undefined) {
		return chapters.chapters === -1 ? null : chapters.chapters;
	}

	// if (preferActivity) {
	// 	return await recentMediaActivities(identity, manga);
	// }

	const tryRecentMediaActivities = async () => {
		if (disableGuessing) {
			return null;
		}

		const anilistData = await recentMediaActivities(identity, manga, settings.get().guessMethod);

		await chapterDatabase.chapters.put({
			id: manga.id,
			chapters: anilistData ? anilistData : -1,
			volumes: null
		});

		return anilistData;
	};

	if (manga.format === 'NOVEL') {
		return await tryRecentMediaActivities();
	}

	const mangadexData = await (
		await fetch(
			`/api/mangadex/manga?english=${manga.title.english}&year=${manga.startDate.year}&romaji=${manga.title.romaji}&native=${manga.title.native}`
		)
	).json();

	if (mangadexData['data'] === undefined || mangadexData['data'].length === 0) {
		return await tryRecentMediaActivities();
	}

	const mangadexId = mangadexData['data'][0]['id'];
	const lastChapterData = await (await fetch(`/api/mangadex/feed?id=${mangadexId}`)).json();

	if (lastChapterData['data'] === undefined || lastChapterData['data'].length === 0) {
		return await tryRecentMediaActivities();
	}

	let lastChapter = lastChapterData['data'][0]['attributes']['chapter'];
	let completedVolumes = null;

	if ((manga.mediaListEntry || { progress: 0 }).progress > lastChapter) {
		const anilistData = await recentMediaActivities(identity, manga, settings.get().guessMethod);

		if (anilistData !== null && anilistData > lastChapter) {
			lastChapter = anilistData;
		}
	}

	const volumeOfChapterData = await (
		await fetch(`/api/mangadex/chapter?id=${mangadexId}&chapter=${manga.mediaListEntry?.progress}`)
	).json();
	let lastAvailableVolume = lastChapterData['data'][0]['attributes']['volume'];

	if (lastAvailableVolume === null) {
		let chapterIndex = 0;

		while (chapterIndex < lastChapterData['data'].length && lastAvailableVolume === null) {
			if (lastChapterData['data'][chapterIndex]['attributes']['volume'] !== null) {
				lastAvailableVolume = lastChapterData['data'][chapterIndex]['attributes']['volume'];
			}

			chapterIndex += 1;
		}
	}

	if (volumeOfChapterData['data'] !== undefined && volumeOfChapterData['data'].length > 0) {
		const volumeOfChapter = volumeOfChapterData['data'][0]['attributes']['volume'];

		if (volumeOfChapter !== null) {
			completedVolumes = volumeOfChapter;
		}

		if (completedVolumes === volumeOfChapter) {
			completedVolumes -= 1;
		}
	}

	if (lastChapter == 0) {
		lastChapter = -1;
	}

	await chapterDatabase.chapters.put({
		id: manga.id,
		chapters: Number(lastChapter),
		volumes: completedVolumes
	});

	return Number(lastChapter);
};