<?php
declare(strict_types=1);

use PHPUnit\Framework\TestCase;

/**
 * The admin settings form saves bridge modes through TMDO_Mode_Manager::set().
 * A refused change (unsafe jump, Promotion Guard) used to be dropped silently:
 * the page said "saved" while the mode stayed put (2.4.2 PR-135, manual F-2).
 */
class AdminBridgeModeSaveTest extends TestCase {

	public static function setUpBeforeClass(): void {
		require_once TMDO_PATH . 'admin/class-tmdo-admin.php';
	}

	protected function setUp(): void {
		ini_set( 'error_log', '/dev/null' );
		$GLOBALS['_wp_options']          = array();
		$GLOBALS['_wp_filter_callbacks'] = array();
		$GLOBALS['_wp_current_user_can'] = array( 'manage_options' => true );
		$GLOBALS['_wp_current_user_id']  = 7;
		TMDO_Mode_Manager::reset_cache();
	}

	private function modes( array $modes ): void {
		$GLOBALS['_wp_options']['wpdo_bridge_modes'] = $modes;
		TMDO_Mode_Manager::reset_cache();
	}

	public function test_an_accepted_change_is_applied_without_refusals(): void {
		$this->modes( array( 'user' => 'disabled' ) );

		$refused = TMDO_Admin::apply_bridge_modes( array( 'user' => 'dual_write' ) );

		$this->assertSame( array(), $refused );
		$this->assertSame( 'dual_write', TMDO_Mode_Manager::get( 'user' ) );
	}

	public function test_an_unsafe_jump_is_reported_and_the_mode_kept(): void {
		$this->modes( array( 'post' => 'disabled' ) );

		$refused = TMDO_Admin::apply_bridge_modes( array( 'post' => 'shadow_read' ) );

		$this->assertCount( 1, $refused );
		$this->assertStringStartsWith( 'post', $refused[0] );
		$this->assertSame( 'disabled', TMDO_Mode_Manager::get( 'post' ) );
	}

	public function test_empty_or_unknown_modes_are_ignored(): void {
		$this->modes( array( 'term' => 'disabled' ) );

		$this->assertSame( array(), TMDO_Admin::apply_bridge_modes( array( 'post' => '', 'term' => 'bogus' ) ) );
		$this->assertSame( 'disabled', TMDO_Mode_Manager::get( 'term' ) );
	}

	/**
	 * @runInSeparateProcess
	 * @preserveGlobalState disabled
	 */
	public function test_a_promotion_refused_by_the_guard_is_reported(): void {
		eval( 'namespace HivePress; class Core {}' );
		$this->modes( array( 'user' => 'shadow_read' ) );

		$refused = TMDO_Admin::apply_bridge_modes( array( 'user' => 'aeav_only' ) );

		$this->assertCount( 1, $refused );
		$this->assertSame( 'shadow_read', TMDO_Mode_Manager::get( 'user' ) );
	}

	/** The full-page form redirects after saving: refusals wait in a per-user transient, shown once. */
	public function test_refusals_are_kept_for_the_next_page_view_only(): void {
		TMDO_Admin::remember_bridge_mode_refusals( array( 'post：refused' ) );

		$this->assertSame( array( 'post：refused' ), TMDO_Admin::pull_bridge_mode_refusals() );
		$this->assertSame( array(), TMDO_Admin::pull_bridge_mode_refusals() );
	}
}