// Runnable self-check: `node --no-warnings src/utils/deviceFloor.check.ts`.
// Covers the budget maths only — the RAM reading itself needs the device.
import assert from 'node:assert';
import {
  canBurst,
  floorRaster,
  FLOOR_EXPORT_PIXELS,
  isFloorDevice,
  maxExportPixels,
} from './deviceFloor.ts';

// Tier boundaries: unknown (0, the platform refused) is never a floor device,
// and the 4 GB mid-range keeps the full path.
assert.strictEqual(isFloorDevice(0), false, 'unknown RAM must keep full quality');
assert.strictEqual(isFloorDevice(1024), true, 'Redmi Go / Nokia 1 / J2 Core');
assert.strictEqual(isFloorDevice(2048), true, 'Go programme ceiling');
assert.strictEqual(isFloorDevice(3072), false);
assert.strictEqual(isFloorDevice(12288), false, '12S Ultra');

// Caps follow the tier.
assert.strictEqual(maxExportPixels(0), Infinity);
assert.strictEqual(maxExportPixels(12288), Infinity);
assert.strictEqual(maxExportPixels(1024), FLOOR_EXPORT_PIXELS);
assert.strictEqual(canBurst(1024), false);
assert.strictEqual(canBurst(0), true);

// The floor device's own 3264x2448 (8 MP) capture, and the 12S Ultra's 3000x4000.
const go = floorRaster(3264, 2448, FLOOR_EXPORT_PIXELS);
assert.ok(go.width < 3264, 'floor capture is resampled');
assert.ok(go.width * go.height <= FLOOR_EXPORT_PIXELS, 'stays inside the cap');
assert.ok(go.width * go.height > FLOOR_EXPORT_PIXELS * 0.9, 'and does not overshoot it');
// Aspect is preserved to within a pixel on both orientations.
assert.ok(Math.abs(go.width / go.height - 3264 / 2448) < 0.002, '4:3 kept');
const tall = floorRaster(3000, 4000, 4_000_000);
assert.ok(Math.abs(tall.width / tall.height - 3000 / 4000) < 0.002, '3:4 kept');

// Untouched when it already fits, and never zero-sized on a degenerate raster.
assert.deepStrictEqual(floorRaster(2000, 1500, FLOOR_EXPORT_PIXELS), { width: 2000, height: 1500 });
assert.deepStrictEqual(floorRaster(1, 1, FLOOR_EXPORT_PIXELS), { width: 1, height: 1 });
assert.deepStrictEqual(floorRaster(0, 0, 100), { width: 0, height: 0 });

console.log('deviceFloor.check: 17 assertions passed');