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

import { createLinuxCncInterpSdk } from "../../../runtime/sdk/src/index.js";
import {
  INTERP_ERROR_FIXTURES,
  INTERP_FILE_FIXTURES,
  INTERP_INI_FIXTURE,
  INTERP_MDI_FIXTURES,
  INTERP_POSITION_PARAMS_FILE_FIXTURE,
} from "../../fixtures/interp-fixture-matrix.mjs";

function verifyExpectedOutput(fixtureName, output, expectedText) {
  const expectedLines = expectedText.split("\n").filter(Boolean);

  for (const expectedLine of expectedLines) {
    if (expectedLine.startsWith("absent=")) {
      const forbidden = expectedLine.slice("absent=".length);
      assert.equal(
        output.includes(forbidden),
        false,
        `${fixtureName}: unexpected ${forbidden}`,
      );
      continue;
    }

    assert.equal(
      output.includes(expectedLine),
      true,
      `${fixtureName}: ${expectedLine}`,
    );
  }
}

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 createLinuxCncInterpSdk({
  wasmBinary: readFileSync(wasmPath),
  print() {},
  printErr(message) {
    console.error(message);
  },
});

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

  verifyExpectedOutput(fixtureName, interp.runProgram(programText), expectedEvents);
}

const namedParamIniPath = "/work/namedparams.ini";
interp.writeTextFile(
  namedParamIniPath,
  readFileSync(resolve(rootDir, "tests/fixtures/ini/namedparams.ini"), "utf8"),
);
const namedParamProgramText = readFileSync(
  resolve(rootDir, `tests/fixtures/gcode/${INTERP_INI_FIXTURE}.ngc`),
  "utf8",
);
const namedParamExpected = readFileSync(
  resolve(rootDir, `tests/fixtures/canon/${INTERP_INI_FIXTURE}.events`),
  "utf8",
).trimEnd();
verifyExpectedOutput(
  INTERP_INI_FIXTURE,
  interp.runProgramWithIni(namedParamProgramText, namedParamIniPath),
  namedParamExpected,
);

for (const fixtureName of INTERP_ERROR_FIXTURES) {
  const programText = readFileSync(
    resolve(rootDir, `tests/fixtures/gcode_errors/${fixtureName}.ngc`),
    "utf8",
  );
  const expectedOutput = readFileSync(
    resolve(rootDir, `tests/fixtures/canon_errors/${fixtureName}.expected`),
    "utf8",
  ).trimEnd();

  verifyExpectedOutput(fixtureName, interp.runProgram(programText), expectedOutput);
}

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

  interp.writeTextFile(programPath, programText);
  verifyExpectedOutput(fixtureName, interp.runFile(programPath), expectedEvents);
}

const namedParamFilePath = `/work/${INTERP_INI_FIXTURE}.ngc`;
interp.writeTextFile(namedParamFilePath, namedParamProgramText);
verifyExpectedOutput(
  "namedparam_semantics_file",
  interp.runFileWithIni(namedParamFilePath, namedParamIniPath),
  namedParamExpected,
);

const positionParamsFilePath = "/work/position_params.ngc";
interp.writeTextFile(
  positionParamsFilePath,
  readFileSync(
    resolve(rootDir, `tests/fixtures/gcode/${INTERP_POSITION_PARAMS_FILE_FIXTURE}.ngc`),
    "utf8",
  ),
);
verifyExpectedOutput(
  `${INTERP_POSITION_PARAMS_FILE_FIXTURE}_file`,
  interp.runFile(positionParamsFilePath),
  readFileSync(
    resolve(
      rootDir,
      `tests/fixtures/canon_file/${INTERP_POSITION_PARAMS_FILE_FIXTURE}.events`,
    ),
    "utf8",
  ).trimEnd(),
);

const parameterFilePath = "/work/rs274ngc.var";
interp.writeTextFile(
  parameterFilePath,
  [
    "5161 10.5",
    "5162 20.25",
    "5220 1",
    "5221 2.25",
    "5399 44",
    "<_named_param> 123",
    "",
  ].join("\n"),
);
verifyExpectedOutput(
  "restore_parameters",
  interp.restoreParameters(parameterFilePath),
  [
    "restore_parameters=0",
    "parameter_5161=10.5",
    "parameter_5162=20.25",
    "parameter_5220=1",
    "parameter_5221=2.25",
    "parameter_5399=44",
  ].join("\n"),
);
verifyExpectedOutput(
  "restore_parameters_missing_file",
  interp.restoreParameters("/work/missing.var"),
  "restore_parameters=0",
);

const outOfOrderParameterFilePath = "/work/out-of-order.var";
interp.writeTextFile(outOfOrderParameterFilePath, "5220 1\n5161 2\n");
verifyExpectedOutput(
  "restore_parameters_out_of_order",
  interp.restoreParameters(outOfOrderParameterFilePath),
  [
    "restore_parameters=5",
    "restore_error_text=Parameter file out of order",
  ].join("\n"),
);

verifyExpectedOutput(
  "save_parameters",
  interp.saveParameters(parameterFilePath, {
    5161: 12.34,
    5162: 56.78,
    5220: 1.0,
    5221: 9.87,
    5399: 66.6,
  }),
  [
    "save_parameters=0",
    "parameter_5161=12.34",
    "parameter_5162=56.78",
    "parameter_5220=1",
    "parameter_5221=9.87",
    "parameter_5399=66.6",
  ].join("\n"),
);
const savedParameterFile = interp.readTextFile(parameterFilePath);
const backupParameterFile = interp.readTextFile(`${parameterFilePath}.bak`);
assert.equal(savedParameterFile.includes("5161\t12.340000"), true);
assert.equal(savedParameterFile.includes("5162\t56.780000"), true);
assert.equal(savedParameterFile.includes("5221\t9.870000"), true);
assert.equal(savedParameterFile.includes("5399\t66.600000"), true);
assert.equal(savedParameterFile.includes("_named_param"), false);
assert.equal(backupParameterFile.includes("5161 10.5"), true);

const toolTablePath = "/work/tool.tbl";
interp.writeTextFile(
  toolTablePath,
  [
    "T2 P7 Z3.125 D1.5 I12 J34 Q4 ;finish tool",
    "T5 P9 X1 Y2 Z3 ;rough tool",
    "",
  ].join("\n"),
);
verifyExpectedOutput(
  "load_tool_table",
  interp.loadToolTable(toolTablePath),
  [
    "tooldata_load=0",
    "tooldata_last_index=2",
    "tool_0.toolno=-1",
    "tool_1.toolno=2",
    "tool_1.pocketno=7",
    "tool_1.z=3.125",
    "tool_1.diameter=1.5",
    "tool_1.frontangle=12",
    "tool_1.backangle=34",
    "tool_1.orientation=4",
    "tool_1.comment=finish tool",
    "tool_2.toolno=5",
    "tool_2.pocketno=9",
    "tool_2.z=3",
    "tool_2.comment=rough tool",
    "tool_index_for_tool_2=1",
  ].join("\n"),
);
verifyExpectedOutput(
  "save_tool_table",
  interp.saveToolTable(toolTablePath),
  [
    "tooldata_save=0",
    "tool_1.toolno=2",
    "tool_2.toolno=5",
  ].join("\n"),
);
const savedToolTable = interp.readTextFile(toolTablePath);
assert.equal(savedToolTable.includes("T2"), true);
assert.equal(savedToolTable.includes("P7"), true);
assert.equal(savedToolTable.includes("D+1.500000"), true);
assert.equal(savedToolTable.includes("Z+3.125000"), true);
assert.equal(savedToolTable.includes("I+12.000000"), true);
assert.equal(savedToolTable.includes("J+34.000000"), true);
assert.equal(savedToolTable.includes("Q4"), true);
assert.equal(savedToolTable.includes(";finish tool"), true);
assert.equal(savedToolTable.includes("T5"), true);
assert.equal(savedToolTable.includes("P9"), true);
assert.equal(savedToolTable.includes(";rough tool"), true);
console.log("interp_wasm_node_smoke=ok");