<?php

declare(strict_types=1);

namespace Tests\Framework\Console\Components;

use App\Framework\Console\Components\InteractiveMenu;
use App\Framework\Console\Layout\TerminalSize;
use App\Framework\Console\Screen\LayoutAreas;
use Tests\Framework\Console\Helpers\TestConsoleOutput;

describe('InteractiveMenu Rendering', function () {
    beforeEach(function () {
        $this->output = new TestConsoleOutput();
        $this->menu = new InteractiveMenu($this->output);
    });

    it('renders menu in standalone mode (clears entire screen)', function () {
        $this->menu
            ->setTitle('Test Menu')
            ->addItem('Option 1')
            ->addItem('Option 2');

        // Note: showSimple() reads from STDIN, so we can't fully test it
        // But we can verify the menu structure is correct
        expect($this->menu)->toBeInstanceOf(InteractiveMenu::class);
        
        // When layoutAreas is null, menu operates in standalone mode
        // This is the default behavior
        expect(true)->toBeTrue(); // Placeholder assertion
    });

    it('uses layout areas to position content correctly', function () {
        $terminalSize = new TerminalSize(80, 24);
        $layoutAreas = LayoutAreas::forTui($terminalSize);
        
        $this->menu
            ->setLayoutAreas($layoutAreas)
            ->setTitle('Test Menu')
            ->addItem('Option 1')
            ->addItem('Option 2');

        // The menu should use content area start line (4) for positioning
        $contentArea = $layoutAreas->contentArea();
        expect($contentArea->startLine)->toBe(4);
    });

    it('preserves menu bar when using layout areas', function () {
        $terminalSize = new TerminalSize(80, 24);
        $layoutAreas = LayoutAreas::forTui($terminalSize);
        
        $this->menu->setLayoutAreas($layoutAreas);
        
        // Menu bar should be lines 1-3
        $menuBarArea = $layoutAreas->menuBarArea();
        expect($menuBarArea)->not->toBeNull();
        expect($menuBarArea->startLine)->toBe(1);
        expect($menuBarArea->endLine)->toBe(3);
        
        // Content should start at line 4
        $contentArea = $layoutAreas->contentArea();
        expect($contentArea->startLine)->toBe(4);
    });

    it('correctly calculates content area when menu bar exists', function () {
        $terminalSize = new TerminalSize(80, 24);
        $layoutAreas = LayoutAreas::forTui($terminalSize);
        
        $contentArea = $layoutAreas->contentArea();
        
        // Content should start after menu bar (line 4)
        expect($contentArea->startLine)->toBe(4);
        // Content should end at terminal height (no status area)
        expect($contentArea->endLine)->toBe(24);
        expect($contentArea->height)->toBe(21); // 24 - 4 + 1
    });

    it('handles standalone layout (no menu bar)', function () {
        $terminalSize = new TerminalSize(80, 24);
        $layoutAreas = LayoutAreas::standalone($terminalSize);
        
        $menuBarArea = $layoutAreas->menuBarArea();
        expect($menuBarArea)->toBeNull();
        
        $contentArea = $layoutAreas->contentArea();
        expect($contentArea->startLine)->toBe(1);
        expect($contentArea->endLine)->toBe(24);
    });

    it('validates layout areas constraints', function () {
        $terminalSize = new TerminalSize(80, 24);
        
        // Content must start after menu bar
        expect(fn() => LayoutAreas::create(
            menuBarStartLine: 1,
            menuBarEndLine: 3,
            contentStartLine: 2, // Too early!
            statusStartLine: 0,
            terminalSize: $terminalSize
        ))->toThrow(\InvalidArgumentException::class);
    });

    it('allows custom layout areas', function () {
        $terminalSize = new TerminalSize(80, 24);
        $layoutAreas = LayoutAreas::create(
            menuBarStartLine: 1,
            menuBarEndLine: 2,
            contentStartLine: 3,
            statusStartLine: 22,
            terminalSize: $terminalSize
        );
        
        $menuBarArea = $layoutAreas->menuBarArea();
        expect($menuBarArea->startLine)->toBe(1);
        expect($menuBarArea->endLine)->toBe(2);
        
        $contentArea = $layoutAreas->contentArea();
        expect($contentArea->startLine)->toBe(3);
        expect($contentArea->endLine)->toBe(21); // Before status area
        
        $statusArea = $layoutAreas->statusArea();
        expect($statusArea)->not->toBeNull();
        expect($statusArea->startLine)->toBe(22);
        expect($statusArea->endLine)->toBe(24);
    });

    it('sets and retrieves layout areas correctly', function () {
        $terminalSize = new TerminalSize(80, 24);
        $layoutAreas = LayoutAreas::forTui($terminalSize);
        
        $this->menu->setLayoutAreas($layoutAreas);
        
        // We can't directly access private property, but we can verify
        // the menu works correctly with layout areas by checking behavior
        expect($layoutAreas->contentArea()->startLine)->toBe(4);
    });
});