<?php

declare(strict_types=1);

namespace WPBootstrap\Tests\Unit\Template;

use PHPUnit\Framework\TestCase;
use Brain\Monkey;
use Brain\Monkey\Functions;
use WPBootstrap\Template\TemplateController;
use ReflectionMethod;

class TemplateControllerTest extends TestCase
{
    private TemplateController $controller;
    private ReflectionMethod $resolveTemplate;

    protected function setUp(): void
    {
        parent::setUp();
        Monkey\setUp();

        // TemplateController constructor: new ContextBuilder() + add_action().
        // ContextBuilder constructor: new NavWalker() (no WP calls).
        Functions\when('is_admin')->justReturn(true);
        Functions\when('wp_doing_ajax')->justReturn(false);
        Functions\when('add_action')->justReturn(true);

        // Default: all WP conditionals return false.
        Functions\when('is_404')->justReturn(false);
        Functions\when('is_search')->justReturn(false);
        Functions\when('is_singular')->justReturn(false);
        Functions\when('is_page')->justReturn(false);
        Functions\when('is_archive')->justReturn(false);
        Functions\when('is_home')->justReturn(false);
        Functions\when('is_category')->justReturn(false);
        Functions\when('get_page_template_slug')->justReturn('');

        $this->controller = new TemplateController();

        $this->resolveTemplate = new ReflectionMethod($this->controller, 'resolveTemplate');
        $this->resolveTemplate->setAccessible(true);
    }

    protected function tearDown(): void
    {
        Monkey\tearDown();
        parent::tearDown();
    }

    private function resolve(): ?string
    {
        return $this->resolveTemplate->invoke($this->controller);
    }

    // ── Template resolution ─────────────────────────────────────

    public function testResolveTemplate404(): void
    {
        Functions\when('is_404')->justReturn(true);

        $this->assertSame('pages/404.html.twig', $this->resolve());
    }

    public function testResolveTemplateSearch(): void
    {
        Functions\when('is_search')->justReturn(true);

        $this->assertSame('pages/search.html.twig', $this->resolve());
    }

    public function testResolveTemplateSinglePostDefault(): void
    {
        Functions\when('is_singular')->alias(fn($type = '') => $type === 'post');

        $this->assertSame('pages/single-sidebar.html.twig', $this->resolve());
    }

    public function testResolveTemplateSinglePostFullWidth(): void
    {
        Functions\when('is_singular')->alias(fn($type = '') => $type === 'post');
        Functions\when('get_page_template_slug')->justReturn('page-full-width');

        $this->assertSame('pages/single.html.twig', $this->resolve());
    }

    public function testResolveTemplatePageDefault(): void
    {
        Functions\when('is_page')->justReturn(true);

        $this->assertSame('pages/page.html.twig', $this->resolve());
    }

    public function testResolveTemplatePageLanding(): void
    {
        Functions\when('is_page')->justReturn(true);
        Functions\when('get_page_template_slug')->justReturn('page-landing');

        $this->assertSame('pages/landing.html.twig', $this->resolve());
    }

    public function testResolveTemplatePageFullWidth(): void
    {
        Functions\when('is_page')->justReturn(true);
        Functions\when('get_page_template_slug')->justReturn('page-full-width');

        $this->assertSame('pages/full-width.html.twig', $this->resolve());
    }

    public function testResolveTemplatePageHero(): void
    {
        Functions\when('is_page')->justReturn(true);
        Functions\when('get_page_template_slug')->justReturn('page-hero');

        $this->assertSame('pages/hero.html.twig', $this->resolve());
    }

    public function testResolveTemplatePageSidebar(): void
    {
        Functions\when('is_page')->justReturn(true);
        Functions\when('get_page_template_slug')->justReturn('page-sidebar');

        $this->assertSame('pages/page-sidebar.html.twig', $this->resolve());
    }

    public function testResolveTemplateArchive(): void
    {
        Functions\when('is_archive')->justReturn(true);

        $this->assertSame('pages/archive.html.twig', $this->resolve());
    }

    public function testResolveTemplateHome(): void
    {
        Functions\when('is_home')->justReturn(true);

        $this->assertSame('pages/index.html.twig', $this->resolve());
    }

    public function testResolveTemplateFallback(): void
    {
        // All conditionals already return false in setUp.
        $this->assertSame('pages/index.html.twig', $this->resolve());
    }
}