'use strict';

import test from 'node:test';
import assert from 'node:assert/strict';

import {
    wheelDeltaFromInput,
    containsMouseSequence,
    stripMouseSequences,
} from '../src/ui/mouse.js';

test('decodes SGR wheel direction', () => {
    assert.equal(wheelDeltaFromInput('\x1b[<64;88;20M'), -1);
    assert.equal(wheelDeltaFromInput('[<65;88;20M'), 1);
    // Some terminals add modifier bits to the button code.
    assert.equal(wheelDeltaFromInput('[<96;88;20M'), -1);
    assert.equal(wheelDeltaFromInput('[<97;88;20M'), 1);
});

test('ignores non-wheel and incomplete mouse input', () => {
    assert.equal(wheelDeltaFromInput('[<0;1;1M'), 0);
    assert.equal(wheelDeltaFromInput('[<64;1;1'), 0);
    assert.equal(wheelDeltaFromInput('hello'), 0);
});

test('removes mouse reports without dropping surrounding text', () => {
    const value = 'before\x1b[<65;88;20Mafter';
    assert.equal(containsMouseSequence(value), true);
    assert.equal(stripMouseSequences(value), 'beforeafter');
    assert.equal(stripMouseSequences('plain text'), 'plain text');
});