import assert from "node:assert/strict";
import test from "node:test";
import { DbcTable } from "../src/dbc/table";
import { DbcSchema } from "../src/dbc/types";

const schema: DbcSchema = {
  name: "Synthetic",
  build: 12340,
  recordSize: 12,
  columns: [
    { name: "ID", kind: "int", bits: 32, offset: 0, isId: true },
    { name: "Scale", kind: "float", bits: 32, offset: 4 },
    { name: "Name", kind: "string", bits: 32, offset: 8 }
  ]
};

test("reads, edits and writes WDBC records and strings", () => {
  const table = new DbcTable(makeFixture(), schema);
  assert.equal(table.header.recordCount, 2);
  assert.equal(table.getCell(0, 0), "1");
  assert.equal(table.getCell(0, 1), "1.5");
  assert.equal(table.getCell(0, 2), "hello");
  assert.equal(table.getCell(1, 2), "world");

  table.setCell(0, 1, "2.25");
  table.setCell(0, 2, "Привет");
  table.setCell(1, 0, "42");

  const reparsed = new DbcTable(table.serialize(), schema);
  assert.equal(reparsed.getCell(0, 1), "2.25");
  assert.equal(reparsed.getCell(0, 2), "Привет");
  assert.equal(reparsed.getCell(1, 0), "42");
  assert.equal(reparsed.getCell(1, 2), "world");
});

test("adds, duplicates and deletes rows with unique generated IDs", () => {
  const table = new DbcTable(makeFixture(), schema);
  const added = table.appendRow();
  assert.equal(added, 2);
  assert.equal(table.getCell(added, 0), "3");
  assert.equal(table.getCell(added, 2), "");

  const duplicate = table.duplicateRow(0);
  assert.equal(duplicate, 1);
  assert.equal(table.getCell(duplicate, 0), "4");
  assert.equal(table.getCell(duplicate, 2), "hello");

  const removed = table.deleteRow(duplicate);
  assert.equal(table.rows.length, 3);
  table.insertRow(duplicate, removed);
  assert.equal(table.getCell(duplicate, 0), "4");

  const reparsed = new DbcTable(table.serialize(), schema);
  assert.equal(reparsed.header.recordCount, 4);
});

test("validates integer ranges and duplicate IDs", () => {
  const table = new DbcTable(makeFixture(), schema);
  assert.throws(() => table.setCell(0, 0, "2"), /already used/);
  assert.throws(() => table.setCell(0, 0, "2147483648"), /between/);
  assert.throws(() => table.setCell(0, 1, "not-a-float"), /floating-point/);
});

function makeFixture(): Uint8Array {
  const strings = Buffer.from("\0hello\0world\0", "utf8");
  const bytes = Buffer.alloc(20 + 24 + strings.length);
  bytes.write("WDBC", 0, "ascii");
  bytes.writeUInt32LE(2, 4);
  bytes.writeUInt32LE(3, 8);
  bytes.writeUInt32LE(12, 12);
  bytes.writeUInt32LE(strings.length, 16);
  bytes.writeInt32LE(1, 20);
  bytes.writeFloatLE(1.5, 24);
  bytes.writeUInt32LE(1, 28);
  bytes.writeInt32LE(2, 32);
  bytes.writeFloatLE(-3.25, 36);
  bytes.writeUInt32LE(7, 40);
  strings.copy(bytes, 44);
  return bytes;
}