refactor: modularize into core/events/formatters/drivers

src/formatters/repo.ts

@@ -0,0 +1,58 @@
+import type { NeutralMessage, NeutralAuthor } from "../types";
+import { GITHUB_COLORS } from "./colors";
+import { emojiPrefix, type T, buildMessage } from "./helpers";
+
+export function formatStar(
+  payload: Record<string, unknown>,
+  repo: string | undefined,
+  repoUrl: string | undefined,
+  author: NeutralAuthor,
+  t: T,
+  showEmoji: boolean,
+): NeutralMessage {
+  const action = (payload.action as string) ?? "created";
+  const actionLabel = action === "created" ? t("events.star.starred") : t("events.star.unstarred");
+  const em = (e: string): string => emojiPrefix(e, showEmoji);
+
+  return buildMessage(
+    {
+      author,
+      title: t("events.star.title", {
+        repo: repo ?? t("common.repository"),
+        emoji: em(action === "created" ? "⭐" : "💫"),
+        label: actionLabel,
+      }),
+      url: repoUrl,
+      color: GITHUB_COLORS.star,
+    },
+    t,
+    repo,
+  );
+}
+
+export function formatFork(
+  payload: Record<string, unknown>,
+  repo: string | undefined,
+  repoUrl: string | undefined,
+  author: NeutralAuthor,
+  t: T,
+  showEmoji: boolean,
+): NeutralMessage {
+  const forkee = payload.forkee as { full_name?: string; html_url?: string } | undefined;
+  const em = (e: string): string => emojiPrefix(e, showEmoji);
+
+  return buildMessage(
+    {
+      author,
+      title: t("events.fork.title", {
+        repo: repo ?? t("common.repository"),
+        emoji: em("🍴"),
+        forkee: forkee?.full_name ?? t("common.unknown"),
+      }),
+      url: forkee?.html_url ?? repoUrl,
+      color: GITHUB_COLORS.fork,
+    },
+    t,
+    repo,
+  );
+}