#!/usr/bin/env node

const assert = require("assert");
const cp = require("child_process");
const fs = require("fs");
const path = require("path");

const repo = path.resolve(__dirname, "..");
const wasmTarget = path.join(
  repo,
  "target",
  "wasm32-unknown-unknown",
  "release",
  "launch_build_demo.wasm"
);

cp.execFileSync(
  "cargo",
  [
    "build",
    "--release",
    "-p",
    "launch-build-demo",
    "--target",
    "wasm32-unknown-unknown",
  ],
  {
    cwd: repo,
    stdio: "inherit",
    env: {
      ...process.env,
      CARGO_PROFILE_RELEASE_OPT_LEVEL: "z",
      CARGO_PROFILE_RELEASE_LTO: "thin",
      CARGO_PROFILE_RELEASE_CODEGEN_UNITS: "1",
    },
  }
);

assert(fs.existsSync(wasmTarget), `missing compiled Wasm module at ${wasmTarget}`);

const output = cp.execFileSync(
  "cargo",
  [
    "run",
    "-q",
    "-p",
    "clusterflux-node",
    "--bin",
    "clusterflux-wasmtime-smoke",
    "--",
    wasmTarget,
    "task_add_one",
    "41",
    "42",
  ],
  { cwd: repo, encoding: "utf8" }
);

const report = JSON.parse(output);
assert.strictEqual(report.type, "wasmtime_task_smoke");
assert.strictEqual(report.export, "task_add_one");
assert.strictEqual(report.arg, 41);
assert.strictEqual(report.result, 42);

const debugOutput = cp.execFileSync(
  "cargo",
  [
    "run",
    "-q",
    "-p",
    "clusterflux-node",
    "--bin",
    "clusterflux-wasmtime-smoke",
    "--",
    "--debug-freeze-resume",
    wasmTarget,
    "task_add_one",
    "41",
    "42",
  ],
  { cwd: repo, encoding: "utf8" }
);
const debugReport = JSON.parse(debugOutput);
assert.strictEqual(debugReport.type, "wasmtime_debug_freeze_resume_smoke");
assert.strictEqual(debugReport.export, "task_add_one");
assert.strictEqual(debugReport.task, "task_add_one");
assert.strictEqual(debugReport.frozen_state, "Frozen");
assert.strictEqual(debugReport.resumed_state, "Running");
assert(debugReport.stack_frames.some((frame) => String(frame).includes("task_add_one")));
assert(
  debugReport.local_values.some(
    ([name, value]) => name === "wasm_local_0" && String(value).includes("41")
  ),
  "Wasmtime debug snapshot must expose the real i32 argument as a frame local"
);
assert.strictEqual(debugReport.node_runtime_captured_wasm_locals, true);
assert.strictEqual(debugReport.result, 42);
assert.strictEqual(debugReport.node_runtime_reached_wasm_task, true);

const hostCommandOutput = cp.execFileSync(
  "cargo",
  [
    "run",
    "-q",
    "-p",
    "clusterflux-node",
    "--bin",
    "clusterflux-wasmtime-smoke",
    "--",
    "--host-command",
    wasmTarget,
    "compile_linux",
  ],
  { cwd: repo, encoding: "utf8" }
);
const hostCommandReport = JSON.parse(hostCommandOutput);
assert.strictEqual(hostCommandReport.type, "wasmtime_host_command_smoke");
assert.strictEqual(hostCommandReport.task, "compile_linux");
assert.match(hostCommandReport.export, /^clusterflux_task_v1_[0-9a-f]{64}$/);
assert.strictEqual(hostCommandReport.program, "cc");
assert.deepStrictEqual(hostCommandReport.args, [
  "-Os",
  "-static",
  "-s",
  "fixture/hello-clusterflux.c",
  "-o",
  "/clusterflux/output/hello-clusterflux",
]);
assert.strictEqual(hostCommandReport.working_directory, "/workspace");
assert.deepStrictEqual(hostCommandReport.environment_variables, {
  SOURCE_DATE_EPOCH: "0",
});
assert.strictEqual(hostCommandReport.timeout_ms, 180000);
assert.strictEqual(hostCommandReport.network, "disabled");
assert.strictEqual(hostCommandReport.status_code, 0);
assert.strictEqual(hostCommandReport.stdout, "");
assert.strictEqual(hostCommandReport.artifact_name, "hello-clusterflux");
assert.strictEqual(hostCommandReport.artifact_size_bytes, "hello-clusterflux".length);
assert.match(hostCommandReport.artifact_digest, /^sha256:[0-9a-f]{64}$/);
assert.strictEqual(hostCommandReport.node_host_import, "clusterflux.command_run_v1");
assert.strictEqual(hostCommandReport.artifact_host_import, "clusterflux.vfs_operation_v1");
assert.strictEqual(hostCommandReport.flagship_linux_build_task, true);
assert.strictEqual(hostCommandReport.node_executed_host_command, true);
assert.strictEqual(hostCommandReport.hosted_control_plane_ran_command, false);

const artifactOutput = cp.execFileSync(
  "cargo",
  [
    "run",
    "-q",
    "-p",
    "clusterflux-node",
    "--bin",
    "clusterflux-wasmtime-smoke",
    "--",
    "--task-artifact",
    wasmTarget,
    "package_release",
  ],
  { cwd: repo, encoding: "utf8" }
);
const artifactReport = JSON.parse(artifactOutput);
assert.strictEqual(artifactReport.type, "wasmtime_task_artifact_smoke");
assert.strictEqual(artifactReport.task, "package_release");
assert.strictEqual(artifactReport.artifact_name, "release.tar");
assert.strictEqual(artifactReport.artifact_size_bytes, "release.tar".length);
assert.match(artifactReport.artifact_digest, /^sha256:[0-9a-f]{64}$/);
assert.strictEqual(artifactReport.host_import, "clusterflux.vfs_operation_v1");
assert.strictEqual(artifactReport.host_issued_handle_returned, true);
assert.ok(artifactReport.artifact.id.endsWith(artifactReport.artifact_digest.slice("sha256:".length)));

console.log("Wasmtime node smoke passed");