#!/usr/bin/env node
// fake-tht.mjs — hermetic THT_BIN stub for e2e tests.
// Parses argv and emits the minimal JSON the backend expects.
// The backend's ThtRunner prepends: thtBin -c <config> <subcommand> [args...]
// So we skip the first two args after node (-c <configPath>).

const argv = process.argv.slice(2); // drop "node" + script path
// Archive integration tests run the actual harness through the production runner.
// Unrelated session/LLM operations remain deterministic fixtures.
if ((argv[0] === "memory" || argv[0] === "evidence" && argv[1] === "admin") && process.env.THT_E2E_MEMORY_BIN) {
  const { spawnSync } = await import("node:child_process");
  const result = spawnSync(process.env.THT_E2E_MEMORY_BIN, argv, {
    env: process.env, stdio: ["ignore", "inherit", "inherit", 3],
  });
  process.exit(result.status ?? 1);
}

// Strip leading "-c <value>" pair (ThtRunner always prepends this).
let args = argv;
if (args[0] === "-c") {
  args = args.slice(2);
}

// args now starts with the subcommand group, e.g. ["session","new","...","--json"]
const sub = args.slice(0, 2).join(" ");

if (sub === "session new") {
  // session new <question> [--provider p] [--model m] [--thinking t] [--name n] --json
  process.stdout.write(JSON.stringify({ id: "e2e-1" }) + "\n");
} else if (sub === "session list") {
  process.stdout.write(JSON.stringify([]) + "\n");
} else if (sub === "session show") {
  const id = args[2] ?? "e2e-1";
  process.stdout.write(
    JSON.stringify({ id, status: "open", provider: null, model: null, thinking: null }) + "\n",
  );
} else if (sub === "sql preview") {
  process.stdout.write(
    JSON.stringify({ columns: [], rows: [], execution_ms: 0, truncated: false }) + "\n",
  );
} else {
  // Unknown subcommand — exit 0 with empty JSON so the backend doesn't crash.
  process.stdout.write("{}\n");
}
process.exit(0);