refactor(effect): harden settings and media cache json parsing

1 files changed, 28 insertions, 0 deletions

diff --git a/src/lib/Effect/json.ts b/src/lib/Effect/json.ts
new file mode 100644
index 00000000..b905cc41
--- /dev/null
+++ b/src/lib/Effect/json.ts
@@ -0,0 +1,28 @@
+import { Effect, Result } from "effect";
+
+export const parseJsonStringEffect = (value: string) =>
+	Effect.try({
+		try: () => JSON.parse(value) as unknown,
+		catch: (cause) => new Error("Invalid JSON payload", { cause }),
+	});
+
+export const parseJsonStringEither = (value: string) =>
+	Result.try({
+		try: () => Effect.runSync(parseJsonStringEffect(value)),
+		catch: (cause) =>
+			cause instanceof Error
+				? cause
+				: new Error("Failed to parse JSON payload", { cause }),
+	});
+
+export const parseJsonStringOrThrow = <T = unknown>(value: string): T =>
+	Result.getOrThrow(parseJsonStringEither(value)) as T;
+
+export const parseJsonStringOrDefault = <T>(value: string, fallback: T): T => {
+	const parsed = parseJsonStringEither(value);
+
+	return Result.match(parsed, {
+		onSuccess: (decoded) => decoded as T,
+		onFailure: () => fallback,
+	});
+};