import { readFileSync } from "node:fs";
import { fileURLToPath } from "node:url";
import { dirname, resolve } from "node:path";
import assert from "node:assert/strict";

import createLinuxCncInterpModule from "../../../build/wasm/core/linuxcnc_interp.js";

function allocCString(mod, value) {
  const bytes = mod.lengthBytesUTF8(value) + 1;
  const ptr = mod._malloc(bytes);
  mod.stringToUTF8(value, ptr, bytes);
  return ptr;
}

function runProgram(mod, programText) {
  const programPtr = allocCString(mod, programText);
  let resultPtr = 0;
  try {
    resultPtr = mod._lcinterp_run_program(programPtr);
    assert.notEqual(resultPtr, 0);
    return mod.UTF8ToString(resultPtr);
  } finally {
    if (resultPtr) {
      mod._lcinterp_free_string(resultPtr);
    }
    mod._free(programPtr);
  }
}

const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);
const rootDir = resolve(__dirname, "../../..");
const wasmPath = resolve(rootDir, "build/wasm/core/linuxcnc_interp.wasm");

const interp = await createLinuxCncInterpModule({
  wasmBinary: readFileSync(wasmPath),
  print() {},
  printErr(message) {
    console.error(message);
  },
});

const fixtureNames = [
  "minimal_linear",
  "arc_semantics",
  "length_units",
  "modal_incremental",
  "plane_selection",
  "coordinate_offsets",
  "g53_machine_coordinates",
  "feed_control_modes",
  "position_params",
  "probe_semantics",
  "spindle_orient",
  "comment_logging",
  "numbered_params",
];

for (const fixtureName of fixtureNames) {
  const programText = readFileSync(
    resolve(rootDir, `tests/fixtures/gcode/${fixtureName}.ngc`),
    "utf8",
  );
  const expectedEvents = readFileSync(
    resolve(rootDir, `tests/fixtures/canon/${fixtureName}.events`),
    "utf8",
  ).trimEnd();

  const output = runProgram(interp, programText);
  const actualLineSet = new Set(output.split("\n").filter(Boolean));
  const expectedLines = expectedEvents.split("\n").filter(Boolean);

  for (const expectedLine of expectedLines) {
    assert.equal(
      actualLineSet.has(expectedLine),
      true,
      `${fixtureName}: ${expectedLine}`,
    );
  }
}
console.log("interp_wasm_node_smoke=ok");