<?php
/**
 * Tests for Helpers functions.
 *
 * @package WP_Recache
 */

class WP_Recache_Helpers_Test extends WP_UnitTestCase {

    public function test_wp_recache_is_cache_enabled_returns_true_by_default() {
        update_option('wp_recache_cache_enabled', true);
        $this->assertTrue(wp_recache_is_cache_enabled());
    }

    public function test_wp_recache_is_cache_enabled_returns_false_when_disabled() {
        update_option('wp_recache_cache_enabled', false);
        $this->assertFalse(wp_recache_is_cache_enabled());
    }

    public function test_wp_recache_get_option_returns_default_when_not_set() {
        delete_option('wp_recache_test_option');
        $this->assertEquals('default', wp_recache_get_option('test_option', 'default'));
    }

    public function test_wp_recache_get_option_returns_stored_value() {
        update_option('wp_recache_test_option', 'stored');
        $this->assertEquals('stored', wp_recache_get_option('test_option', 'default'));
    }

    public function test_wp_recache_set_option_stores_value() {
        wp_recache_set_option('test_option', 'new_value');
        $this->assertEquals('new_value', get_option('wp_recache_test_option'));
    }

    public function test_wp_recache_get_cache_path_returns_correct_path() {
        $url = 'https://example.com/test-page/';
        $expected = WP_RECACHE_CACHE_PATH . md5('example.com/test-page/') . '.html';
        $this->assertEquals($expected, wp_recache_get_cache_path($url));
    }

    public function test_wp_recache_get_cache_path_handles_root_url() {
        $url = 'https://example.com/';
        $expected = WP_RECACHE_CACHE_PATH . md5('example.com/') . '.html';
        $this->assertEquals($expected, wp_recache_get_cache_path($url));
    }

    public function test_wp_recache_get_cache_path_no_collision_between_nested_urls() {
        $a = wp_recache_get_cache_path('https://example.com/a/b/');
        $b = wp_recache_get_cache_path('https://example.com/ab/');
        $this->assertNotEquals($a, $b);
    }

    public function test_wp_recache_get_cache_path_no_collision_between_hosts() {
        $a = wp_recache_get_cache_path('https://site1.example.com/');
        $b = wp_recache_get_cache_path('https://site2.example.com/');
        $this->assertNotEquals($a, $b);
    }

    public function test_wp_recache_is_mobile_returns_false_for_desktop_user_agent() {
        $_SERVER['HTTP_USER_AGENT'] = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36';
        $this->assertFalse(wp_recache_is_mobile());
    }

    public function test_wp_recache_is_mobile_returns_true_for_mobile_user_agent() {
        $_SERVER['HTTP_USER_AGENT'] = 'Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X)';
        $this->assertTrue(wp_recache_is_mobile());
    }

    public function test_wp_recache_should_exclude_returns_true_for_logged_in_users() {
        $user_id = $this->factory()->user->create();
        wp_set_current_user($user_id);
        $this->assertTrue(wp_recache_should_exclude());
    }

    public function test_wp_recache_should_exclude_returns_false_for_anonymous_users() {
        wp_set_current_user(0);
        $_SERVER['REQUEST_METHOD'] = 'GET';
        $_SERVER['REQUEST_URI'] = '/test-page/';
        unset($_SERVER['HTTP_USER_AGENT']);
        $this->assertFalse(wp_recache_should_exclude());
    }

    public function test_wp_recache_should_exclude_returns_true_for_excluded_urls() {
        wp_set_current_user(0);
        $_SERVER['REQUEST_METHOD'] = 'GET';
        $_SERVER['REQUEST_URI'] = '/cart/';
        unset($_SERVER['HTTP_USER_AGENT']);
        $this->assertTrue(wp_recache_should_exclude());
    }

    public function test_wp_recache_delete_cache_removes_file() {
        $url = 'https://example.com/test-page/';
        $path = wp_recache_get_cache_path($url);

        wp_mkdir_p(dirname($path));
        file_put_contents($path, 'test content');

        $this->assertFileExists($path);
        wp_recache_delete_cache($url);
        $this->assertFileDoesNotExist($path);
    }

    public function test_wp_recache_delete_all_cache_removes_all_files() {
        $cache_path = WP_RECACHE_CACHE_PATH;
        wp_mkdir_p($cache_path);

        file_put_contents($cache_path . 'test1.html', 'content1');
        file_put_contents($cache_path . 'test2.html', 'content2');

        $this->assertFileExists($cache_path . 'test1.html');
        $this->assertFileExists($cache_path . 'test2.html');

        wp_recache_delete_all_cache();

        $this->assertFileDoesNotExist($cache_path . 'test1.html');
        $this->assertFileDoesNotExist($cache_path . 'test2.html');
    }
}