1 files changed, 48 insertions, 0 deletions
diff --git a/src/lib/anime.ts b/src/lib/anime.ts
new file mode 100644
index 00000000..5431a230
--- /dev/null
+++ b/src/lib/anime.ts
@@ -0,0 +1,48 @@
+import type { Media } from './AniList/media';
+
+const totalEpisodes = (anime: Media) => {
+	return anime.episodes === null ? '' : `<span style="opacity: 50%">/${anime.episodes}</span>`;
+};
+
+export const airingTime = (anime: Media, upcoming = false) => {
+	const untilAiring = anime.nextAiringEpisode?.timeUntilAiring;
+	let timeFrame;
+
+	if (untilAiring !== undefined) {
+		let minutes = untilAiring / 60;
+
+		if (minutes >= 30) {
+			let hours = minutes / 60;
+
+			if (hours >= 24) {
+				let weeks = Math.floor(Math.floor(hours / 24) / 7);
+
+				if (weeks >= 1) {
+					weeks = Math.round(weeks);
+
+					timeFrame = `${weeks} week${weeks === 1 ? '' : 's'}`;
+				} else {
+					const days = Math.round(Math.floor(hours / 24));
+
+					timeFrame = `${days} day${days === 1 ? '' : 's'}`;
+				}
+			} else {
+				hours = Math.round(hours);
+
+				timeFrame = `${hours} hour${hours === 1 ? '' : 's'}`;
+			}
+		} else {
+			minutes = Math.round(minutes);
+
+			timeFrame = `${minutes} minute${minutes === 1 ? '' : 's'}`;
+		}
+
+		if (upcoming) {
+			return `${anime.nextAiringEpisode?.episode}${totalEpisodes(anime)} in ${timeFrame}`;
+		} else {
+			return `<span style="opacity: 50%">${anime.nextAiringEpisode?.episode} in ${timeFrame}</span>`;
+		}
+	}
+
+	return '';
+};