export const BROWSER_COMPATIBILITY_SCHEMA = "browser-simulation-compatibility.v1";

export async function runCompatibilityMatrix(client, { cycles = 8, chunk = 2 } = {}) {
  if (!client || typeof client.hello !== "function" || typeof client.attach !== "function" || typeof client.stepMany !== "function") throw new Error("browser_client_invalid");
  if (!Number.isSafeInteger(cycles) || cycles < 0 || cycles > 1000000 || !Number.isSafeInteger(chunk) || chunk < 1) throw new Error("browser_matrix_limit");
  const capabilities = await client.hello();
  const ready = await client.attach("compat-attach");
  const stepped = await client.stepMany(cycles, { chunk, operationPrefix: "compat-step" });
  const snapshot = await client.snapshot("compat-snapshot");
  return {
    schema: BROWSER_COMPATIBILITY_SCHEMA,
    status: "verified",
    context_id: client.contextId,
    session_id: client.sessionId,
    capabilities: capabilities.kind,
    session_ready: ready.kind,
    cycles,
    chunks: stepped.chunks,
    snapshot_kind: snapshot.kind,
    logical_tick: snapshot.simulation_tick ?? stepped.last?.simulation_tick ?? 0,
  };
}

export function performanceBudget({ cycles, chunks, maxCycles = 1000000, maxChunks = 1000000 } = {}) {
  if (!Number.isSafeInteger(cycles) || cycles < 0 || cycles > maxCycles || !Number.isSafeInteger(chunks) || chunks < 0 || chunks > maxChunks) return { status: "blocked", code: "browser_performance_budget" };
  return { status: "verified", cycles, chunks, logical_only: true };
}