<?php

declare(strict_types=1);

use App\Framework\Database\ValueObjects\TableName;
use App\Framework\Database\ValueObjects\ColumnName;

describe('TableName', function () {
    it('creates table name from string', function () {
        $tableName = TableName::fromString('users');

        expect($tableName->value)->toBe('users');
        expect($tableName->toString())->toBe('users');
    });

    it('validates table name format', function () {
        // Valid names
        expect(fn() => TableName::fromString('users'))->not->toThrow(\InvalidArgumentException::class);
        expect(fn() => TableName::fromString('user_profiles'))->not->toThrow(\InvalidArgumentException::class);
        expect(fn() => TableName::fromString('_temp_table'))->not->toThrow(\InvalidArgumentException::class);
        expect(fn() => TableName::fromString('table123'))->not->toThrow(\InvalidArgumentException::class);

        // Invalid names
        expect(fn() => TableName::fromString(''))
            ->toThrow(\InvalidArgumentException::class, 'cannot be empty');

        expect(fn() => TableName::fromString('123invalid'))
            ->toThrow(\InvalidArgumentException::class, 'must start with a letter or underscore');

        expect(fn() => TableName::fromString('invalid-name'))
            ->toThrow(\InvalidArgumentException::class, 'can only contain letters, numbers, and underscores');

        expect(fn() => TableName::fromString('invalid name'))
            ->toThrow(\InvalidArgumentException::class, 'can only contain letters, numbers, and underscores');
    });

    it('validates maximum length', function () {
        $validName = str_repeat('a', 64);
        expect(fn() => TableName::fromString($validName))->not->toThrow(\InvalidArgumentException::class);

        $tooLong = str_repeat('a', 65);
        expect(fn() => TableName::fromString($tooLong))
            ->toThrow(\InvalidArgumentException::class, 'exceeds maximum length');
    });

    it('detects SQL injection attempts', function () {
        // Note: Most SQL injection attempts are caught by format validation first,
        // since they contain invalid characters (quotes, hyphens, spaces, etc.)

        // These all fail format validation (contain invalid characters)
        expect(fn() => TableName::fromString("users'; DROP TABLE users--"))
            ->toThrow(\InvalidArgumentException::class);

        expect(fn() => TableName::fromString('users UNION SELECT'))
            ->toThrow(\InvalidArgumentException::class);

        expect(fn() => TableName::fromString('users/*comment*/'))
            ->toThrow(\InvalidArgumentException::class);
    });

    it('quotes table names for different platforms', function () {
        $tableName = TableName::fromString('users');

        expect($tableName->quoted('mysql'))->toBe('`users`');
        expect($tableName->quoted('postgresql'))->toBe('"users"');
        expect($tableName->quoted('postgres'))->toBe('"users"');
        expect($tableName->quoted('pgsql'))->toBe('"users"');
        expect($tableName->quoted('sqlite'))->toBe('"users"');
        expect($tableName->quoted())->toBe('`users`'); // Default MySQL
        expect($tableName->quoted('unknown'))->toBe('`users`'); // Fallback to MySQL
    });

    it('compares table names for equality', function () {
        $table1 = TableName::fromString('users');
        $table2 = TableName::fromString('users');
        $table3 = TableName::fromString('USERS'); // Different case
        $table4 = TableName::fromString('orders');

        expect($table1->equals($table2))->toBeTrue();
        expect($table1->equals($table3))->toBeTrue(); // Case-insensitive
        expect($table1->equals($table4))->toBeFalse();
    });

    it('matches table name patterns', function () {
        $table = TableName::fromString('user_profiles');

        expect($table->matches('user_*'))->toBeTrue();
        expect($table->matches('*_profiles'))->toBeTrue();
        expect($table->matches('user_profiles'))->toBeTrue();
        expect($table->matches('order_*'))->toBeFalse();
    });

    it('detects reserved SQL keywords', function () {
        $table = TableName::fromString('users');
        expect($table->isReservedKeyword())->toBeFalse();

        $reservedTable = TableName::fromString('_select'); // Starts with underscore to be valid
        // Note: 'select' itself is reserved, but '_select' is not
        expect($reservedTable->isReservedKeyword())->toBeFalse();
    });

    it('converts to lowercase', function () {
        $table = TableName::fromString('UserProfiles');

        expect($table->toLower())->toBe('userprofiles');
    });

    it('checks for table name prefix', function () {
        $table = TableName::fromString('wp_users');

        expect($table->hasPrefix('wp_'))->toBeTrue();
        expect($table->hasPrefix('drupal_'))->toBeFalse();
    });

    it('adds prefix to table name', function () {
        $table = TableName::fromString('users');
        $prefixed = $table->withPrefix('wp_');

        expect($prefixed->value)->toBe('wp_users');
        expect($prefixed->toString())->toBe('wp_users');

        // Original unchanged (immutable)
        expect($table->value)->toBe('users');
    });

    it('removes prefix from table name', function () {
        $table = TableName::fromString('wp_users');
        $unprefixed = $table->withoutPrefix('wp_');

        expect($unprefixed->value)->toBe('users');

        // Removing non-existent prefix returns same table
        $same = $unprefixed->withoutPrefix('drupal_');
        expect($same->value)->toBe('users');
    });

    it('converts to string via magic method', function () {
        $table = TableName::fromString('users');

        expect((string) $table)->toBe('users');
    });

    it('is immutable', function () {
        $original = TableName::fromString('users');
        $prefixed = $original->withPrefix('wp_');

        // Original remains unchanged
        expect($original->value)->toBe('users');

        // New instance created when prefix is added
        expect($prefixed)->not->toBe($original);
        expect($prefixed->value)->toBe('wp_users');

        // Removing non-existent prefix returns same instance (optimization)
        $unprefixed = $original->withoutPrefix('wp_');
        expect($unprefixed->value)->toBe('users');

        // But removing actual prefix creates new instance
        $prefixedTable = TableName::fromString('wp_users');
        $removedPrefix = $prefixedTable->withoutPrefix('wp_');
        expect($removedPrefix)->not->toBe($prefixedTable);
        expect($removedPrefix->value)->toBe('users');
    });

    it('handles edge cases correctly', function () {
        // Single character (valid if letter or underscore)
        expect(fn() => TableName::fromString('a'))->not->toThrow(\InvalidArgumentException::class);
        expect(fn() => TableName::fromString('_'))->not->toThrow(\InvalidArgumentException::class);

        // Underscore-only prefix
        $table = TableName::fromString('_temp_users');
        expect($table->value)->toBe('_temp_users');

        // Numbers in name (but not at start)
        $table = TableName::fromString('table_123_test');
        expect($table->value)->toBe('table_123_test');
    });
});