[BETA] Initial Commit (Nix Support Only)

src/lib/client.ts

@@ -0,0 +1,48 @@
+const SUWAYOMI = "http://127.0.0.1:4567";
+const GQL = `${SUWAYOMI}/api/graphql`;
+
+export function thumbUrl(path: string): string {
+  return `${SUWAYOMI}${path}`;
+}
+
+interface GQLResponse<T> {
+  data: T;
+  errors?: { message: string }[];
+}
+
+// Retry with exponential backoff — Suwayomi may not be ready on first load
+async function fetchWithRetry(url: string, init: RequestInit, retries = 8, delayMs = 500): Promise<Response> {
+  for (let i = 0; i < retries; i++) {
+    try {
+      const res = await fetch(url, init);
+      return res;
+    } catch (e) {
+      if (i === retries - 1) throw e;
+      await new Promise((r) => setTimeout(r, delayMs * Math.pow(1.5, i)));
+    }
+  }
+  throw new Error("unreachable");
+}
+
+export async function gql<T>(
+  query: string,
+  variables?: Record<string, unknown>
+): Promise<T> {
+  const res = await fetchWithRetry(GQL, {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify({ query, variables }),
+  });
+
+  if (!res.ok) {
+    throw new Error(`Suwayomi HTTP ${res.status}`);
+  }
+
+  const json: GQLResponse<T> = await res.json();
+
+  if (json.errors?.length) {
+    throw new Error(json.errors[0].message);
+  }
+
+  return json.data;
+}