// content-store capsule — helpers for the site-content blob.
//
// DEFAULT_DATA is a templated value: at reconstruct time the capsule tool
// replaces the marker below with the contents of site-data.json. The
// generated file is committed to the output site so the runtime is plain
// ESM with no build step.

export const DEFAULT_DATA = /* @CAPSULE_DATA */ {};

const KEY = "site:data:v1";

export async function readData(env) {
  if (!env.YL_DATA) return DEFAULT_DATA;
  const raw = await env.YL_DATA.get(KEY);
  if (!raw) return DEFAULT_DATA;
  try {
    return JSON.parse(raw);
  } catch {
    return DEFAULT_DATA;
  }
}

export async function writeData(env, data) {
  if (!env.YL_DATA) throw new Error("KV not bound");
  await env.YL_DATA.put(KEY, JSON.stringify(data));
}

export function nextWorkNum(works) {
  let max = 0;
  for (const w of works) {
    const n = parseInt(w.num, 10);
    if (!isNaN(n) && n > max) max = n;
  }
  return String(max + 1).padStart(3, "0");
}