const { test } = require('node:test');
const assert = require('node:assert');
const fs = require('node:fs');
const path = require('node:path');
const os = require('node:os');
const { bake } = require('../src/bake');

const FRESH = path.resolve(__dirname, 'fixtures/sprite-fresh');

test('bake sprite: re-bake produces byte-identical PNG + UV-JSON', async (t) => {
    const tmpA = fs.mkdtempSync(path.join(os.tmpdir(), 'det-a-'));
    const tmpB = fs.mkdtempSync(path.join(os.tmpdir(), 'det-b-'));
    t.after(() => {
        fs.rmSync(tmpA, { recursive: true, force: true });
        fs.rmSync(tmpB, { recursive: true, force: true });
    });

    const opts = { mode: 'sprite', inDir: FRESH, atlasId: 'det', padPx: 0 };
    await bake({ ...opts, outDir: tmpA });
    await bake({ ...opts, outDir: tmpB });

    const pngA  = fs.readFileSync(path.join(tmpA, 'det/sprites.diffuse.atlas.png'));
    const pngB  = fs.readFileSync(path.join(tmpB, 'det/sprites.diffuse.atlas.png'));
    const uvA   = fs.readFileSync(path.join(tmpA, 'det/sprites.uv.json'), 'utf8');
    const uvB   = fs.readFileSync(path.join(tmpB, 'det/sprites.uv.json'), 'utf8');
    const lockA = fs.readFileSync(path.join(tmpA, 'det/sprites.atlas.lock.json'), 'utf8');
    const lockB = fs.readFileSync(path.join(tmpB, 'det/sprites.atlas.lock.json'), 'utf8');

    assert.deepStrictEqual(pngA, pngB);
    assert.strictEqual(uvA, uvB);
    assert.strictEqual(lockA, lockB);
});