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

const FIX = path.resolve(__dirname, 'fixtures/small-fresh');

test('bake-fresh: 3 sources, no lock, IDs 1..3', async () => {
    const outDir = fs.mkdtempSync(path.join(os.tmpdir(), 'atlas-bake-fresh-'));
    try {
        const result = await bake({
            inDir: FIX,
            outDir,
            atlasId: 'small_demo',
            tileSize: 32,
        });
        assert.strictEqual(result.tileCount, 3);

        const atlas = JSON.parse(fs.readFileSync(path.join(outDir, 'tiles.atlas.json'), 'utf8'));
        assert.strictEqual(atlas.atlas_id, 'small_demo');
        assert.strictEqual(atlas.tiles.length, 3);
        // Alphabetical sort: grass < stone < water
        assert.strictEqual(atlas.tiles[0].name, 'grass');
        assert.strictEqual(atlas.tiles[0].id, 1);
        assert.strictEqual(atlas.tiles[1].name, 'stone');
        assert.strictEqual(atlas.tiles[1].id, 2);
        assert.strictEqual(atlas.tiles[2].name, 'water');
        assert.strictEqual(atlas.tiles[2].id, 3);

        const lock = JSON.parse(fs.readFileSync(path.join(outDir, 'tiles.atlas.lock.json'), 'utf8'));
        assert.strictEqual(lock.bindings.grass, 1);
        assert.strictEqual(lock.bindings.water, 3);
        assert.strictEqual(lock.next_id, 4);
        assert.deepStrictEqual(lock.deleted, []);

        assert.ok(fs.existsSync(path.join(outDir, 'tiles.diffuse.atlas.png')));
        assert.ok(fs.existsSync(path.join(outDir, 'tiles.height.atlas.png')));
    } finally {
        fs.rmSync(outDir, { recursive: true, force: true });
    }
});