<?php

declare(strict_types=1);

namespace App\Tests\Controllers;

use App\Controllers\ImportController;
use App\Tests\TestCase;
use ReflectionMethod;

/**
 * Phase 20 — pure-static guards on ImportController. Mirrors the
 * UserControllerTest pattern: exercise the bits that do not need PDO or
 * session wiring.
 */
final class ImportControllerTest extends TestCase
{
    public function testLooksLikeXlsxAcceptsRealZipHeader(): void
    {
        $tmp = tempnam(sys_get_temp_dir(), 'sptest');
        file_put_contents($tmp, "PK\x03\x04rest of the file");
        try {
            $this->assertTrue(self::call('looksLikeXlsx', 'workbook.xlsx', $tmp));
            $this->assertFalse(self::call('looksLikeXlsx', 'workbook.txt',  $tmp), 'wrong extension');
        } finally {
            unlink($tmp);
        }
    }

    public function testLooksLikeXlsxRejectsNonZip(): void
    {
        $tmp = tempnam(sys_get_temp_dir(), 'sptest');
        file_put_contents($tmp, 'not a zip');
        try {
            $this->assertFalse(self::call('looksLikeXlsx', 'workbook.xlsx', $tmp));
        } finally {
            unlink($tmp);
        }
    }

    public function testLooksLikeXlsxRejectsTooShortFile(): void
    {
        $tmp = tempnam(sys_get_temp_dir(), 'sptest');
        file_put_contents($tmp, 'PK');
        try {
            $this->assertFalse(self::call('looksLikeXlsx', 'workbook.xlsx', $tmp));
        } finally {
            unlink($tmp);
        }
    }

    public function testUploadErrorCodeMapping(): void
    {
        $this->assertSame('too_big', self::call('uploadErrorCode', UPLOAD_ERR_INI_SIZE));
        $this->assertSame('too_big', self::call('uploadErrorCode', UPLOAD_ERR_FORM_SIZE));
        $this->assertSame('partial', self::call('uploadErrorCode', UPLOAD_ERR_PARTIAL));
        $this->assertSame('no_file', self::call('uploadErrorCode', UPLOAD_ERR_NO_FILE));
        $this->assertSame('server',  self::call('uploadErrorCode', UPLOAD_ERR_NO_TMP_DIR));
        $this->assertSame('server',  self::call('uploadErrorCode', UPLOAD_ERR_CANT_WRITE));
        $this->assertSame('unknown', self::call('uploadErrorCode', 9999));
    }

    /**
     * Reflectively call a private static helper on ImportController so we
     * don't need to expand its public surface for testability.
     */
    private static function call(string $method, mixed ...$args): mixed
    {
        $r = new ReflectionMethod(ImportController::class, $method);
        $r->setAccessible(true);
        return $r->invoke(null, ...$args);
    }
}