refactor: unify inline directives and media fetch

src/utils/directive-tags.ts

@@ -0,0 +1,87 @@
+export type InlineDirectiveParseResult = {
+  text: string;
+  audioAsVoice: boolean;
+  replyToId?: string;
+  replyToCurrent: boolean;
+  hasAudioTag: boolean;
+  hasReplyTag: boolean;
+};
+
+type InlineDirectiveParseOptions = {
+  currentMessageId?: string;
+  stripAudioTag?: boolean;
+  stripReplyTags?: boolean;
+};
+
+const AUDIO_TAG_RE = /\[\[\s*audio_as_voice\s*\]\]/gi;
+const REPLY_TAG_RE =
+  /\[\[\s*(?:reply_to_current|reply_to\s*:\s*([^\]\n]+))\s*\]\]/gi;
+
+function normalizeDirectiveWhitespace(text: string): string {
+  return text
+    .replace(/[ \t]+/g, " ")
+    .replace(/[ \t]*\n[ \t]*/g, "\n")
+    .trim();
+}
+
+export function parseInlineDirectives(
+  text?: string,
+  options: InlineDirectiveParseOptions = {},
+): InlineDirectiveParseResult {
+  const {
+    currentMessageId,
+    stripAudioTag = true,
+    stripReplyTags = true,
+  } = options;
+  if (!text) {
+    return {
+      text: "",
+      audioAsVoice: false,
+      replyToCurrent: false,
+      hasAudioTag: false,
+      hasReplyTag: false,
+    };
+  }
+
+  let cleaned = text;
+  let audioAsVoice = false;
+  let hasAudioTag = false;
+  let hasReplyTag = false;
+  let sawCurrent = false;
+  let lastExplicitId: string | undefined;
+
+  cleaned = cleaned.replace(AUDIO_TAG_RE, (match) => {
+    audioAsVoice = true;
+    hasAudioTag = true;
+    return stripAudioTag ? " " : match;
+  });
+
+  cleaned = cleaned.replace(
+    REPLY_TAG_RE,
+    (match, idRaw: string | undefined) => {
+      hasReplyTag = true;
+      if (idRaw === undefined) {
+        sawCurrent = true;
+      } else {
+        const id = idRaw.trim();
+        if (id) lastExplicitId = id;
+      }
+      return stripReplyTags ? " " : match;
+    },
+  );
+
+  cleaned = normalizeDirectiveWhitespace(cleaned);
+
+  const replyToId =
+    lastExplicitId ??
+    (sawCurrent ? currentMessageId?.trim() || undefined : undefined);
+
+  return {
+    text: cleaned,
+    audioAsVoice,
+    replyToId,
+    replyToCurrent: sawCurrent,
+    hasAudioTag,
+    hasReplyTag,
+  };
+}