feat: adding support for local intros

Adding logic to be able to play local intros before content plays

Signed-off-by: Lance Chant <13349722+lancechant@users.noreply.github.com>

hooks/useIntroPlayback.ts

@@ -0,0 +1,46 @@
+import type { Api } from "@jellyfin/sdk";
+import type { BaseItemDto } from "@jellyfin/sdk/lib/generated-client/models";
+import { useEffect, useState } from "react";
+import { getIntros } from "@/utils/intros";
+
+interface UseIntroPlaybackProps {
+  api: Api | null;
+  itemId: string | null;
+  userId?: string;
+}
+
+export function useIntroPlayback({
+  api,
+  itemId,
+  userId,
+}: UseIntroPlaybackProps) {
+  const [intros, setIntros] = useState<BaseItemDto[]>([]);
+  const [isPlayingIntro, setIsPlayingIntro] = useState(false);
+
+  useEffect(() => {
+    async function fetchIntros() {
+      if (!api || !itemId) return;
+
+      const introItems = await getIntros(api, itemId, userId);
+      setIntros(introItems);
+      // Set isPlayingIntro to true when intros are available
+      setIsPlayingIntro(introItems.length > 0);
+    }
+
+    fetchIntros();
+  }, [api, itemId, userId]);
+
+  // Only play the first intro if intros are available.. might be nice to configure this at some point with tags or something 🤷‍♂️
+  const currentIntro = intros.length > 0 ? intros[0] : null;
+
+  const skipAllIntros = () => {
+    setIsPlayingIntro(false);
+  };
+
+  return {
+    intros,
+    currentIntro,
+    isPlayingIntro,
+    skipAllIntros,
+  };
+}