add: load dialohue manifest

src/utils/dialogues/loadDialogueManifest.ts

@@ -0,0 +1,49 @@
+import type {
+  DialogueDefinition,
+  DialogueManifest,
+  DialogueVoice,
+} from "@/types/dialogues/dialogues";
+import type { SubtitleLanguage } from "@/managers/stores/useSettingsStore";
+import { parseDialogueManifest } from "@/utils/dialogues/dialogueManifestValidation";
+
+const DIALOGUE_MANIFEST_PATH = "/sounds/dialogue/dialogues.json";
+const DEFAULT_SUBTITLE_LANGUAGE: SubtitleLanguage = "fr";
+
+export async function loadDialogueManifest(): Promise<DialogueManifest | null> {
+  const response = await fetch(DIALOGUE_MANIFEST_PATH);
+
+  if (!response.ok) {
+    return null;
+  }
+
+  return parseDialogueManifest(await response.json());
+}
+
+export function resolveDialogueSubtitlePath(
+  manifest: DialogueManifest,
+  dialogue: DialogueDefinition,
+  language: SubtitleLanguage,
+): string | null {
+  const voice = getDialogueVoice(manifest, dialogue.voice);
+  if (!voice) return null;
+
+  return getVoiceSubtitlePath(voice, language);
+}
+
+export function getDialogueVoice(
+  manifest: DialogueManifest,
+  voiceId: DialogueDefinition["voice"],
+): DialogueVoice | null {
+  return manifest.voices.find((voice) => voice.id === voiceId) ?? null;
+}
+
+function getVoiceSubtitlePath(
+  voice: DialogueVoice,
+  language: SubtitleLanguage,
+): string | null {
+  return (
+    voice.subtitles[language] ??
+    voice.subtitles[DEFAULT_SUBTITLE_LANGUAGE] ??
+    null
+  );
+}