<?php

declare(strict_types=1);

namespace Tests\Framework\Database\ValueObjects;

use App\Framework\Database\ValueObjects\QueryParameters;
use InvalidArgumentException;

describe('QueryParameters Value Object', function () {
    it('can be created empty', function () {
        $params = QueryParameters::empty();
        expect($params->isEmpty())->toBeTrue();
        expect($params->count())->toBe(0);
        expect($params->toArray())->toBe([]);
    });

    it('can be created from array', function () {
        $data = ['id' => 123, 'name' => 'John'];
        $params = QueryParameters::fromArray($data);

        expect($params->isEmpty())->toBeFalse();
        expect($params->count())->toBe(2);
        expect($params->get('id'))->toBe(123);
        expect($params->get('name'))->toBe('John');
    });

    it('can add parameters immutably', function () {
        $params = QueryParameters::empty();
        $newParams = $params->with('id', 123);

        expect($params->has('id'))->toBeFalse(); // Original unchanged
        expect($newParams->has('id'))->toBeTrue();
        expect($newParams->get('id'))->toBe(123);
    });

    it('can merge parameters', function () {
        $params1 = QueryParameters::fromArray(['id' => 123]);
        $params2 = $params1->merge(['name' => 'John', 'active' => true]);

        expect($params1->count())->toBe(1); // Original unchanged
        expect($params2->count())->toBe(3);
        expect($params2->get('id'))->toBe(123);
        expect($params2->get('name'))->toBe('John');
        expect($params2->get('active'))->toBeTrue();
    });

    it('can remove parameters immutably', function () {
        $params = QueryParameters::fromArray(['id' => 123, 'name' => 'John']);
        $newParams = $params->without('name');

        expect($params->has('name'))->toBeTrue(); // Original unchanged
        expect($newParams->has('name'))->toBeFalse();
        expect($newParams->has('id'))->toBeTrue();
    });

    it('gets parameters with defaults', function () {
        $params = QueryParameters::fromArray(['id' => 123]);

        expect($params->get('id'))->toBe(123);
        expect($params->get('missing'))->toBeNull();
        expect($params->get('missing', 'default'))->toBe('default');
    });

    it('normalizes parameter names', function () {
        $params = QueryParameters::fromArray([':id' => 123, 'name' => 'John']);

        expect($params->has('id'))->toBeTrue();
        expect($params->has(':id'))->toBeTrue(); // Both work
        expect($params->get('id'))->toBe(123);
        expect($params->get(':id'))->toBe(123);
    });

    it('converts to PDO array with colon prefixes', function () {
        $params = QueryParameters::fromArray(['id' => 123, ':name' => 'John']);
        $pdoArray = $params->toPdoArray();

        expect($pdoArray)->toBe([':id' => 123, ':name' => 'John']);
    });

    it('finds used parameters in SQL', function () {
        $params = QueryParameters::fromArray(['id' => 123, 'name' => 'John', 'unused' => 'test']);
        $sql = 'SELECT * FROM users WHERE id = :id AND name = :name';

        $used = $params->getUsedParameters($sql);
        expect($used)->toBe(['id', 'name']);
    });

    it('finds unused parameters', function () {
        $params = QueryParameters::fromArray(['id' => 123, 'name' => 'John', 'unused' => 'test']);
        $sql = 'SELECT * FROM users WHERE id = :id';

        $unused = $params->getUnusedParameters($sql);
        expect($unused)->toBe(['name', 'unused']);
    });

    it('validates SQL parameter requirements', function () {
        $params = QueryParameters::fromArray(['id' => 123]);
        $sql = 'SELECT * FROM users WHERE id = :id AND name = :name';

        expect(fn () => $params->validateForSql($sql))->toThrow(InvalidArgumentException::class);
    });

    it('validates SQL parameter requirements successfully', function () {
        $params = QueryParameters::fromArray(['id' => 123, 'name' => 'John']);
        $sql = 'SELECT * FROM users WHERE id = :id AND name = :name';

        expect(fn () => $params->validateForSql($sql))->not->toThrow(InvalidArgumentException::class);
    });

    it('determines PDO parameter types', function () {
        $params = QueryParameters::fromArray([
            'null_val' => null,
            'bool_val' => true,
            'int_val' => 123,
            'string_val' => 'text',
        ]);

        expect($params->getPdoType('null_val'))->toBe(\PDO::PARAM_NULL);
        expect($params->getPdoType('bool_val'))->toBe(\PDO::PARAM_BOOL);
        expect($params->getPdoType('int_val'))->toBe(\PDO::PARAM_INT);
        expect($params->getPdoType('string_val'))->toBe(\PDO::PARAM_STR);
    });

    it('throws exception for non-string parameter names', function () {
        expect(fn () => QueryParameters::fromArray([123 => 'value']))->toThrow(InvalidArgumentException::class);
    });

    it('throws exception for empty parameter names', function () {
        expect(fn () => QueryParameters::fromArray(['' => 'value']))->toThrow(InvalidArgumentException::class);
        expect(fn () => QueryParameters::fromArray([':' => 'value']))->toThrow(InvalidArgumentException::class);
    });

    it('throws exception for invalid parameter names', function () {
        expect(fn () => QueryParameters::fromArray(['1invalid' => 'value']))->toThrow(InvalidArgumentException::class);
        expect(fn () => QueryParameters::fromArray(['invalid-name' => 'value']))->toThrow(InvalidArgumentException::class);
        expect(fn () => QueryParameters::fromArray(['invalid name' => 'value']))->toThrow(InvalidArgumentException::class);
    });

    it('allows valid parameter names', function () {
        expect(fn () => QueryParameters::fromArray(['valid' => 'value']))->not->toThrow(InvalidArgumentException::class);
        expect(fn () => QueryParameters::fromArray(['valid_name' => 'value']))->not->toThrow(InvalidArgumentException::class);
        expect(fn () => QueryParameters::fromArray(['valid123' => 'value']))->not->toThrow(InvalidArgumentException::class);
        expect(fn () => QueryParameters::fromArray(['_valid' => 'value']))->not->toThrow(InvalidArgumentException::class);
        expect(fn () => QueryParameters::fromArray([':valid' => 'value']))->not->toThrow(InvalidArgumentException::class);
    });

    it('throws exception for non-scalar parameter values', function () {
        expect(fn () => QueryParameters::fromArray(['array' => [1, 2, 3]]))->toThrow(InvalidArgumentException::class);
        expect(fn () => QueryParameters::fromArray(['object' => new \stdClass()]))->toThrow(InvalidArgumentException::class);
    });

    it('allows scalar and null parameter values', function () {
        expect(fn () => QueryParameters::fromArray([
            'string' => 'text',
            'int' => 123,
            'float' => 12.34,
            'bool' => true,
            'null' => null,
        ]))->not->toThrow(InvalidArgumentException::class);
    });
});