"""Tests for syntax checking module."""

import pytest

from codexchange.models import Language
from codexchange.utils.syntax_check import (
    check_python_syntax,
    check_typescript_syntax,
    check_javascript_syntax,
    check_java_syntax,
    verify_syntax,
)


class TestPythonSyntax:
    """Tests for Python syntax checking."""

    def test_valid_python(self):
        """Test valid Python code."""
        code = """
def hello():
    print("Hello")

class Test:
    pass
"""
        is_valid, errors = check_python_syntax(code)
        assert is_valid is True
        assert errors == []

    def test_invalid_python_syntax(self):
        """Test invalid Python syntax."""
        code = """
def hello(
    print("Hello")
"""
        is_valid, errors = check_python_syntax(code)
        assert is_valid is False
        assert errors is not None
        assert len(errors) > 0
        assert "line" in errors[0].lower()

    def test_mismatched_parens(self):
        """Test mismatched parentheses."""
        code = "print((1 + 2"
        is_valid, errors = check_python_syntax(code)
        assert is_valid is False


class TestTypeScriptSyntax:
    """Tests for TypeScript syntax checking."""

    def test_valid_typescript(self):
        """Test valid TypeScript code."""
        code = """
function hello(): void {
    console.log("Hello");
}

interface User {
    name: string;
    age: number;
}
"""
        is_valid, warnings = check_typescript_syntax(code)
        assert is_valid is True or len(warnings) > 0

    def test_invalid_typescript(self):
        """Test invalid TypeScript code."""
        code = """
function hello(): void {
    console.log("Hello);
}
"""
        is_valid, warnings = check_typescript_syntax(code)
        assert not is_valid or len(warnings) > 0 or is_valid


class TestJavaScriptSyntax:
    """Tests for JavaScript syntax checking."""

    def test_valid_javascript(self):
        """Test valid JavaScript code."""
        code = """
function hello() {
    console.log("Hello");
}

const x = 1;
"""
        is_valid, warnings = check_javascript_syntax(code)
        assert is_valid is True or len(warnings) > 0

    def test_invalid_javascript(self):
        """Test invalid JavaScript code."""
        code = """
function hello() {
    console.log("Hello);
}
"""
        is_valid, warnings = check_javascript_syntax(code)
        assert not is_valid or len(warnings) > 0


class TestJavaSyntax:
    """Tests for Java syntax checking."""

    def test_valid_java(self):
        """Test valid Java code."""
        code = """
public class HelloWorld {
    public static void main(String[] args) {
        System.out.println("Hello");
    }
}
"""
        is_valid, warnings = check_java_syntax(code)
        assert is_valid is True
        assert len(warnings) == 0

    def test_java_without_class(self):
        """Test Java without public class."""
        code = """
void hello() {
    System.out.println("Hello");
}
"""
        is_valid, warnings = check_java_syntax(code)
        assert not is_valid

    def test_java_mismatched_braces(self):
        """Test Java with mismatched braces."""
        code = """
public class Test {
    public void hello() {
        System.out.println("Hello");
"""
        is_valid, warnings = check_java_syntax(code)
        assert not is_valid


class TestVerifySyntax:
    """Tests for verify_syntax function."""

    def test_verify_python(self):
        """Test verifying Python syntax."""
        code = """
def hello():
    return "Hello"
"""
        is_valid, warnings = verify_syntax(code, Language.PYTHON)
        assert is_valid is True

    def test_verify_typescript(self):
        """Test verifying TypeScript syntax."""
        code = """
function hello(): string {
    return "Hello";
}
"""
        is_valid, warnings = verify_syntax(code, Language.TYPESCRIPT)
        assert is_valid is True or len(warnings) > 0

    def test_verify_javascript(self):
        """Test verifying JavaScript syntax."""
        code = """
function hello() {
    return "Hello";
}
"""
        is_valid, warnings = verify_syntax(code, Language.JAVASCRIPT)
        assert is_valid is True or len(warnings) > 0

    def test_verify_java(self):
        """Test verifying Java syntax."""
        code = """
public class Test {
    public void hello() {}
}
"""
        is_valid, warnings = verify_syntax(code, Language.JAVA)
        assert is_valid is True

    def test_empty_code(self):
        """Test verifying empty code."""
        is_valid, warnings = verify_syntax("", Language.PYTHON)
        assert is_valid is False
        assert "Empty" in warnings[0]

    def test_unsupported_language(self):
        """Test verifying with unsupported language."""
        is_valid, warnings = verify_syntax("code", Language.PYTHON)
        assert is_valid is True