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import { get } from 'svelte/store';
import type { Media } from '../../../../Data/AniList/media';
import settings from '$stores/settings';
import type { SubsPlease } from '$lib/Media/Anime/Airing/Subtitled/subsPlease';
import stringSimilarity from 'string-similarity';
import excludeMatch from '$lib/Data/Static/matchExclude.json';
import { season } from '../../season';
export interface Time {
title: string;
time: string;
day: string;
}
const secondsUntil = (targetTime: string, targetDay: string) => {
const now = new Date();
const [targetHour, targetMinute] = targetTime.split(':').map(Number);
let dayDifference =
['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'].indexOf(
targetDay
) - now.getDay();
if (dayDifference < 0) dayDifference += 7;
const targetDate = new Date(now);
targetDate.setDate(now.getDate() + dayDifference);
targetDate.setHours(targetHour, targetMinute, 0, 0);
const secondsDifference = (Number(targetDate) - Number(now)) / 1000;
return secondsDifference > 0 ? secondsDifference : secondsDifference + 7 * 24 * 60 * 60;
};
const preprocessTitle = (title: string): string => {
return title
.toLowerCase()
.replace(/\b(season|s|part|cour)\b/g, ' ')
.replace(/[^a-z0-9\s]/gi, '')
.trim()
.split(/\s+/)
.join(' ');
};
const calculateWeightedSimilarity = (title1: string, title2: string): number => {
const tokens1 = title1.split(' ');
const tokens2 = title2.split(' ');
const set2 = new Set(tokens2);
let score = 0;
tokens1.forEach((token) => {
if (set2.has(token)) {
score += /^\d+$/.test(token) ? 2 : 1;
}
});
return score / (Math.max(tokens1.length, tokens2.length) * 2);
};
export const findClosestMatch = (times: Time[], anime: Media): Time | null => {
if (excludeMatch.includes(anime.id)) return null;
let bestMatch: Time | null = null;
let bestScore = 0;
[anime.title.romaji, anime.title.english, ...anime.synonyms]
.filter(Boolean)
.forEach((searchTitle) => {
if (searchTitle.includes('OVA') || searchTitle.includes('Special')) return;
const normalizedSearchTitle = preprocessTitle(searchTitle);
times.forEach((time) => {
const normalizedTimeTitle = preprocessTitle(time.title);
const similarityScore = calculateWeightedSimilarity(
normalizedSearchTitle,
normalizedTimeTitle
);
if (
similarityScore > bestScore &&
time.day ===
new Date((anime.nextAiringEpisode?.airingAt || 0) * 1000).toLocaleString('en-US', {
weekday: 'long'
})
) {
bestScore = similarityScore;
bestMatch = time;
}
});
});
return bestMatch;
};
const normalizeTitle = (title: string | null) =>
(title || '')
.toLowerCase()
.replace(/\b(s|season|part|cour)\s*\d+/g, '')
.replace(/[\W_]+/g, ' ')
.trim();
export const findClosestMedia = (media: Media[], matchFor: string) => {
if (!matchFor) return null;
let bestFitMedia: Media | null = null;
let smallestDistance = -Infinity;
media.forEach((m) => {
const titles = [m.title.romaji, m.title.english, ...m.synonyms].filter(Boolean);
if (
titles.some(
(title) => title.toLowerCase().includes('special') || title.toLowerCase().includes('ova')
)
)
return;
titles.forEach((title) => {
const normalisedTitle = normalizeTitle(title);
const normalisedMatchFor = normalizeTitle(matchFor);
const distance = stringSimilarity.compareTwoStrings(normalisedMatchFor, normalisedTitle);
if (
distance > smallestDistance &&
(normalisedMatchFor
.split(' ')
.filter((word) => titles.some((title) => normalizeTitle(title).includes(word))).length >=
normalisedMatchFor.split(' ').length ||
titles.some((title) => normalizeTitle(title).includes(normalisedMatchFor)))
) {
smallestDistance = distance;
bestFitMedia = m;
}
});
});
return bestFitMedia as Media | null;
};
export const injectAiringTime = (anime: Media, subsPlease: SubsPlease | null) => {
if (season() !== anime.season) return anime;
const airingAt = anime.nextAiringEpisode?.airingAt;
const now = new Date();
// const nativeUntilAiring = airingAt
// ? Math.round((airingAt - Date.now() / 1000) * 100) / 100
// : undefined;
const nativeTime = new Date(airingAt ? airingAt * 1000 : 0);
let untilAiring;
let time = new Date(airingAt ? airingAt * 1000 : 0);
let nextEpisode = anime.nextAiringEpisode?.episode || 0;
if (
!(
(get(settings).displayNativeCountdown || !subsPlease)
// || !(nativeUntilAiring !== undefined && nativeUntilAiring < 24 * 60 * 60)
)
) {
const times: Time[] = [];
for (const [key, value] of Object.entries(subsPlease.schedule)) {
const flattenedValue = Array.isArray(value) ? value.flat() : [];
for (const time of flattenedValue) {
times.push({
title: time.title,
time: time.time,
day: key
});
}
}
if ((anime.nextAiringEpisode?.episode || 0) > 1) {
const foundTime: Time | null = findClosestMatch(times, anime);
if (foundTime) {
untilAiring = secondsUntil((foundTime as Time).time, (foundTime as Time).day);
time = new Date(Date.now() + untilAiring * 1000);
}
}
}
const SEVEN_DAYS = 7 * 24 * 60 * 60 * 1000;
if (nativeTime > time && nativeTime.getTime() <= SEVEN_DAYS) {
nextEpisode -= 1;
}
if (nativeTime.getTime() - now.getTime() > SEVEN_DAYS) {
const beforeTime = time;
time = nativeTime;
time.setHours(beforeTime.getHours());
time.setMinutes(beforeTime.getMinutes());
}
return {
...anime,
nextAiringEpisode: {
episode: nextEpisode,
airingAt: time.getTime() / 1000,
nativeAiringAt: nativeTime.getTime() / 1000
}
} as Media;
};
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