<?php
require_once __DIR__ . '/../admin/metabox.php';

/**
 * @covers \projects_portfolio_save_meta_box
 */
class Metabox_Test extends \PHPUnit\Framework\TestCase {

    protected function setUp(): void {
        \Brain\Monkey\setUp();
    }

    protected function tearDown(): void {
        $_POST = [];
        \Brain\Monkey\tearDown();
    }

    /** @var array<string,string> */
    private array $saved = [];

    protected function setUpSaveStubs(): void {
        $this->saved = [];
        \Brain\Monkey\Functions\stubs( [
            'update_post_meta' => function ( $post_id, $key, $value ) {
                $this->saved[ $key ] = $value;
                return true;
            },
            'wp_verify_nonce' => function () { return true; },
            'wp_nonce_field' => function () { /* noop */ },
        ] );
    }

    public function test_save_persists_provider_and_repo_url(): void {
        $this->setUpSaveStubs();
        $_POST['projects_portfolio_meta_box_nonce']   = 'nonce';
        $_POST['projects_portfolio_provider']         = 'gitea';
        $_POST['projects_portfolio_repo_url']         = 'https://codeberg.org/owner/repo';
        $_POST['projects_portfolio_gitea_base_url']   = 'https://codeberg.org';

        projects_portfolio_save_meta_box( 42 );

        $this->assertSame( 'gitea', $this->saved['_projects_portfolio_provider'] );
        $this->assertSame( 'https://codeberg.org/owner/repo', $this->saved['_projects_portfolio_repo_url'] );
        $this->assertSame( 'https://codeberg.org', $this->saved['_projects_portfolio_gitea_base_url'] );
    }

    public function test_lazy_migration_from_legacy_url(): void {
        $existing = [
            '_projects_portfolio_provider' => '',
            '_projects_portfolio_repo_url' => '',
            '_projects_portfolio_github_url' => 'https://github.com/owner/repo',
        ];
        \Brain\Monkey\Functions\stubs( [
            'get_post_meta' => function ( $post_id, $key, $single = false ) use ( &$existing ) {
                return $existing[ $key ] ?? '';
            },
            'update_post_meta' => function ( $post_id, $key, $value ) use ( &$existing ) {
                $existing[ $key ] = $value;
                return true;
            },
            'wp_verify_nonce' => function () { return true; },
            'wp_nonce_field' => function () { /* noop */ },
        ] );

        // No $_POST provider/repo_url. Lazy migration should fire.
        $_POST['projects_portfolio_meta_box_nonce'] = 'nonce';

        projects_portfolio_save_meta_box( 1 );

        $this->assertSame( 'github', $existing['_projects_portfolio_provider'] );
        $this->assertSame( 'https://github.com/owner/repo', $existing['_projects_portfolio_repo_url'] );
    }

    public function test_switching_to_gitea_deletes_legacy_github_url(): void {
        $existing = [
            '_projects_portfolio_provider'  => 'github',
            '_projects_portfolio_repo_url'  => 'https://github.com/owner/repo',
            '_projects_portfolio_github_url' => 'https://github.com/owner/repo',
        ];
        $deleted = [];
        \Brain\Monkey\Functions\stubs( [
            'get_post_meta' => function ( $post_id, $key, $single = false ) use ( &$existing ) {
                return $existing[ $key ] ?? '';
            },
            'update_post_meta' => function ( $post_id, $key, $value ) use ( &$existing ) {
                $existing[ $key ] = $value;
                return true;
            },
            'delete_post_meta' => function ( $post_id, $key ) use ( &$existing, &$deleted ) {
                unset( $existing[ $key ] );
                $deleted[] = $key;
                return true;
            },
            'wp_verify_nonce' => function () { return true; },
            'wp_nonce_field' => function () { /* noop */ },
        ] );

        $_POST['projects_portfolio_meta_box_nonce'] = 'nonce';
        $_POST['projects_portfolio_provider']       = 'gitea';
        $_POST['projects_portfolio_repo_url']       = 'https://codeberg.org/owner/repo';

        projects_portfolio_save_meta_box( 7 );

        $this->assertSame( 'gitea', $existing['_projects_portfolio_provider'] );
        $this->assertSame( 'https://codeberg.org/owner/repo', $existing['_projects_portfolio_repo_url'] );
        $this->assertArrayNotHasKey( '_projects_portfolio_github_url', $existing );
        $this->assertContains( '_projects_portfolio_github_url', $deleted );
    }

    public function test_github_with_empty_repo_url_deletes_legacy_github_url(): void {
        $existing = [
            '_projects_portfolio_provider'  => 'github',
            '_projects_portfolio_repo_url'  => 'https://github.com/owner/repo',
            '_projects_portfolio_github_url' => 'https://github.com/owner/repo',
        ];
        $deleted = [];
        \Brain\Monkey\Functions\stubs( [
            'get_post_meta' => function ( $post_id, $key, $single = false ) use ( &$existing ) {
                return $existing[ $key ] ?? '';
            },
            'update_post_meta' => function ( $post_id, $key, $value ) use ( &$existing ) {
                $existing[ $key ] = $value;
                return true;
            },
            'delete_post_meta' => function ( $post_id, $key ) use ( &$existing, &$deleted ) {
                unset( $existing[ $key ] );
                $deleted[] = $key;
                return true;
            },
            'wp_verify_nonce' => function () { return true; },
            'wp_nonce_field' => function () { /* noop */ },
        ] );

        $_POST['projects_portfolio_meta_box_nonce'] = 'nonce';
        $_POST['projects_portfolio_provider']       = 'github';
        $_POST['projects_portfolio_repo_url']       = '';

        projects_portfolio_save_meta_box( 9 );

        $this->assertSame( 'github', $existing['_projects_portfolio_provider'] );
        $this->assertSame( '', $existing['_projects_portfolio_repo_url'] );
        $this->assertArrayNotHasKey( '_projects_portfolio_github_url', $existing );
        $this->assertContains( '_projects_portfolio_github_url', $deleted );
    }
}