/**
 * @license
 * Copyright 2025 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import { describe, it, expect } from 'vitest';
import { parseSGRMouseEvent, parseX11MouseEvent, isIncompleteMouseSequence, parseMouseEvent, } from './mouse.js';
import { ESC } from './input.js';
describe('mouse utils', () => {
    describe('parseSGRMouseEvent', () => {
        it('parses a valid SGR mouse press', () => {
            // Button 0 (left), col 37, row 25, press (M)
            const input = `${ESC}[<0;37;25M`;
            const result = parseSGRMouseEvent(input);
            expect(result).not.toBeNull();
            expect(result.event).toEqual({
                name: 'left-press',
                col: 37,
                row: 25,
                shift: false,
                meta: false,
                ctrl: false,
                button: 'left',
            });
            expect(result.length).toBe(input.length);
        });
        it('parses a valid SGR mouse release', () => {
            // Button 0 (left), col 37, row 25, release (m)
            const input = `${ESC}[<0;37;25m`;
            const result = parseSGRMouseEvent(input);
            expect(result).not.toBeNull();
            expect(result.event).toEqual({
                name: 'left-release',
                col: 37,
                row: 25,
                shift: false,
                meta: false,
                ctrl: false,
                button: 'left',
            });
        });
        it('parses SGR with modifiers', () => {
            // Button 0 + Shift(4) + Meta(8) + Ctrl(16) = 0 + 4 + 8 + 16 = 28
            const input = `${ESC}[<28;10;20M`;
            const result = parseSGRMouseEvent(input);
            expect(result).not.toBeNull();
            expect(result.event).toEqual({
                name: 'left-press',
                col: 10,
                row: 20,
                shift: true,
                meta: true,
                ctrl: true,
                button: 'left',
            });
        });
        it('parses SGR move event', () => {
            // Button 0 + Move(32) = 32
            const input = `${ESC}[<32;10;20M`;
            const result = parseSGRMouseEvent(input);
            expect(result).not.toBeNull();
            expect(result.event.name).toBe('move');
            expect(result.event.button).toBe('left');
        });
        it('parses SGR scroll events', () => {
            expect(parseSGRMouseEvent(`${ESC}[<64;1;1M`).event.name).toBe('scroll-up');
            expect(parseSGRMouseEvent(`${ESC}[<65;1;1M`).event.name).toBe('scroll-down');
        });
        it('returns null for invalid SGR', () => {
            expect(parseSGRMouseEvent(`${ESC}[<;1;1M`)).toBeNull();
            expect(parseSGRMouseEvent(`${ESC}[<0;1;M`)).toBeNull();
            expect(parseSGRMouseEvent(`not sgr`)).toBeNull();
        });
    });
    describe('parseX11MouseEvent', () => {
        it('parses a valid X11 mouse press', () => {
            // Button 0 (left) + 32 = ' ' (space)
            // Col 1 + 32 = '!'
            // Row 1 + 32 = '!'
            const input = `${ESC}[M !!`;
            const result = parseX11MouseEvent(input);
            expect(result).not.toBeNull();
            expect(result.event).toEqual({
                name: 'left-press',
                col: 1,
                row: 1,
                shift: false,
                meta: false,
                ctrl: false,
                button: 'left',
            });
            expect(result.length).toBe(6);
        });
        it('returns null for incomplete X11', () => {
            expect(parseX11MouseEvent(`${ESC}[M !`)).toBeNull();
        });
    });
    describe('isIncompleteMouseSequence', () => {
        it('returns true for prefixes', () => {
            expect(isIncompleteMouseSequence(ESC)).toBe(true);
            expect(isIncompleteMouseSequence(`${ESC}[`)).toBe(true);
            expect(isIncompleteMouseSequence(`${ESC}[<`)).toBe(true);
            expect(isIncompleteMouseSequence(`${ESC}[M`)).toBe(true);
        });
        it('returns true for partial SGR', () => {
            expect(isIncompleteMouseSequence(`${ESC}[<0;10;20`)).toBe(true);
        });
        it('returns true for partial X11', () => {
            expect(isIncompleteMouseSequence(`${ESC}[M `)).toBe(true);
            expect(isIncompleteMouseSequence(`${ESC}[M !`)).toBe(true);
        });
        it('returns false for complete SGR', () => {
            expect(isIncompleteMouseSequence(`${ESC}[<0;10;20M`)).toBe(false);
        });
        it('returns false for complete X11', () => {
            expect(isIncompleteMouseSequence(`${ESC}[M !!!`)).toBe(false);
        });
        it('returns false for non-mouse sequences', () => {
            expect(isIncompleteMouseSequence('a')).toBe(false);
            expect(isIncompleteMouseSequence(`${ESC}[A`)).toBe(false); // Arrow up
        });
        it('returns false for garbage that started like a mouse sequence but got too long (SGR)', () => {
            const longGarbage = `${ESC}[<` + '0'.repeat(100);
            expect(isIncompleteMouseSequence(longGarbage)).toBe(false);
        });
    });
    describe('parseMouseEvent', () => {
        it('parses SGR', () => {
            expect(parseMouseEvent(`${ESC}[<0;1;1M`)).not.toBeNull();
        });
        it('parses X11', () => {
            expect(parseMouseEvent(`${ESC}[M !!!`)).not.toBeNull();
        });
    });
});
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