"""
Unit tests for the Dana language parser.

Copyright © 2025 Aitomatic, Inc.
MIT License

Community Values:
    1. Attribution: Please maintain attribution to Aitomatic and Dana/Dana in derivative works.
    2. Contributions: If you find Dana/Dana valuable, consider contributing improvements back rather than creating separate, similar implementations.
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Learn more: https://aitomatic.com
GitHub: https://github.com/aitomatic/dana
Discord: https://discord.gg/6jGD4PYk
"""

import textwrap

import pytest
from lark import Tree

from dana.core.lang.ast import (
    Assignment,
    AttributeAccess,
    BinaryExpression,
    BinaryOperator,
    Conditional,
    DictLiteral,
    FStringExpression,
    FunctionCall,
    Identifier,
    ImportFromStatement,
    ImportStatement,
    ListLiteral,
    LiteralExpression,
    PassStatement,
    Program,
    SetLiteral,
    SubscriptExpression,
    TupleLiteral,
    UnaryExpression,
    WhileLoop,
    WithStatement,
)
from dana.core.lang.parser.utils.parsing_utils import ParserCache


# === Helper Functions ===
def get_first_statement(program):
    stmt = program.statements[0]
    # Recursively unwrap Tree or list wrappers
    while isinstance(stmt, Tree | list):
        if isinstance(stmt, list):
            stmt = stmt[0]
        elif isinstance(stmt, Tree) and stmt.children:
            stmt = stmt.children[0]
        else:
            break
    return stmt


def get_assignment(program):
    stmt = get_first_statement(program)
    # Recursively unwrap Tree or list wrappers
    while not isinstance(stmt, Assignment):
        if isinstance(stmt, list):
            stmt = stmt[0]
        elif isinstance(stmt, Tree) and stmt.children:
            stmt = stmt.children[0]
        else:
            raise AssertionError(f"Could not find Assignment in node: {stmt}")
    return stmt


def get_conditional(program):
    for stmt in program.statements:
        # Recursively unwrap Tree or list wrappers
        s = stmt
        while isinstance(s, list | Tree):
            if isinstance(s, list):
                s = s[0]
            elif isinstance(s, Tree) and s.children:
                s = s.children[0]
            else:
                break
        if isinstance(s, Conditional):
            return s
    raise AssertionError("No Conditional found in program.statements")


def get_while_loop(program):
    for stmt in program.statements:
        # Recursively unwrap Tree or list wrappers
        s = stmt
        while isinstance(s, list | Tree):
            if isinstance(s, list):
                s = s[0]
            elif isinstance(s, Tree) and s.children:
                s = s.children[0]
            else:
                break
        if isinstance(s, WhileLoop):
            return s
    raise AssertionError("No WhileLoop found in program.statements")


def assert_assignment(node, target_name, value_type=None):
    assert isinstance(node, Assignment)

    # Handle different target types
    if hasattr(node.target, "name"):
        # Identifier target
        actual_target_name = node.target.name
    elif hasattr(node.target, "object") and hasattr(node.target, "attribute"):
        # AttributeAccess target - construct expected name format
        if hasattr(node.target.object, "name"):
            actual_target_name = f"{node.target.object.name}.{node.target.attribute}"
        else:
            actual_target_name = f"{node.target.object}.{node.target.attribute}"
    else:
        raise AssertionError(f"Unknown assignment target type: {type(node.target)}")

    assert actual_target_name == target_name
    valid_types = (
        LiteralExpression,
        Identifier,
        BinaryExpression,
        # Add all other valid expression node classes as needed
        # These should match the Expression type alias in ast.py
        # If you want to be exhaustive:
        # FunctionCall, FStringExpression, UnaryExpression, AttributeAccess, SubscriptExpression, DictLiteral, SetLiteral, TupleLiteral
        FunctionCall,
        FStringExpression,
        UnaryExpression,
        AttributeAccess,
        SubscriptExpression,
        DictLiteral,
        ListLiteral,
        SetLiteral,
        TupleLiteral,
    )
    if value_type is not None:
        assert isinstance(node.value, value_type)
    else:
        assert isinstance(node.value, valid_types)


# === Pytest Fixture ===
@pytest.fixture
def parser():
    """Create a fresh parser instance for each test."""
    return ParserCache.get_parser("dana")


# Add a fixture for the typecheck flag
@pytest.fixture(params=[True, False], ids=["typecheck_on", "typecheck_off"])
def typecheck_flag(request):
    return request.param


# =========================
# 1. ASSIGNMENTS
# =========================
def test_assignment_simple(parser, typecheck_flag):
    program = parser.parse("x = 42", do_type_check=typecheck_flag, do_transform=True)
    stmt = get_assignment(program)
    assert_assignment(stmt, "x")  # No automatic local: prefix
    assert isinstance(stmt.value, LiteralExpression)
    assert stmt.value.value == 42


def test_assignment_float(parser, typecheck_flag):
    program = parser.parse("x = 3.14", do_type_check=typecheck_flag, do_transform=True)
    stmt = get_assignment(program)
    assert_assignment(stmt, "x")  # No automatic local: prefix
    assert stmt.value.value == 3.14


def test_assignment_scoped(parser, typecheck_flag):
    program = parser.parse("private:x = 1", do_type_check=typecheck_flag, do_transform=True)
    stmt = get_assignment(program)
    assert_assignment(stmt, "private:x")
    assert stmt.value.value == 1


def test_assignment_dotted(parser, typecheck_flag):
    program = parser.parse("foo.bar = 2", do_type_check=typecheck_flag, do_transform=True)
    stmt = get_assignment(program)
    assert_assignment(stmt, "foo.bar")  # No automatic local: prefix
    assert stmt.value.value == 2


# TODO: Add indexed assignment when supported by AST


# =========================
# 2. LITERALS & STRINGS
# =========================
def test_literal_string(parser, typecheck_flag):
    program = parser.parse('msg = "Alice"', do_type_check=typecheck_flag, do_transform=True)
    stmt = get_assignment(program)
    assert_assignment(stmt, "msg")  # No automatic local: prefix
    assert stmt.value.value == "Alice"


def test_literal_multiline_string(parser, typecheck_flag):
    program = parser.parse('msg = """Hello\nWorld"""', do_type_check=typecheck_flag, do_transform=True)
    stmt = get_assignment(program)
    assert_assignment(stmt, "msg")  # No automatic local: prefix
    assert isinstance(stmt.value, LiteralExpression)
    assert isinstance(stmt.value.value, str)
    assert "Hello" in stmt.value.value


def test_literal_fstring(parser, typecheck_flag):
    program = parser.parse('msg = f"Hello, {name}"', do_type_check=typecheck_flag, do_transform=True)
    stmt = get_assignment(program)
    assert_assignment(stmt, "msg")  # No automatic local: prefix
    assert isinstance(stmt.value, LiteralExpression)
    assert isinstance(stmt.value.value, FStringExpression)


def test_literal_raw_string(parser, typecheck_flag):
    program = parser.parse('msg = r"raw\\nstring"', do_type_check=typecheck_flag, do_transform=True)
    stmt = get_assignment(program)
    assert_assignment(stmt, "msg")  # No automatic local: prefix
    assert isinstance(stmt.value, LiteralExpression)
    assert isinstance(stmt.value.value, str)
    assert "raw" in stmt.value.value


def test_literal_bool_and_none(parser, typecheck_flag):
    program = parser.parse("a = True\nb = False\nc = None", do_type_check=typecheck_flag, do_transform=True)
    assert len(program.statements) == 3
    assert all(isinstance(get_assignment(type("FakeProg", (), {"statements": [stmt]})()), Assignment) for stmt in program.statements)
    value = program.statements[0].value
    if hasattr(value, "data") and hasattr(value, "children"):
        # Unwrap Tree to get the actual value
        value = value.children[0] if value.children else value
    assert isinstance(value, LiteralExpression)
    assert value.value is True
    assert isinstance(program.statements[1].value, LiteralExpression)
    assert program.statements[1].value.value is False
    assert isinstance(program.statements[2].value, LiteralExpression)
    assert program.statements[2].value.value is None


# =========================
# 3. COLLECTIONS
# =========================
def test_collection_list(parser, typecheck_flag):
    program = parser.parse("l = [1, 2]", do_type_check=typecheck_flag, do_transform=True)
    stmt = get_assignment(program)
    assert_assignment(stmt, "l")  # No automatic local: prefix
    assert isinstance(stmt.value, ListLiteral)
    assert len(stmt.value.items) == 2
    assert all(isinstance(e, LiteralExpression) for e in stmt.value.items)
    assert [e.value for e in stmt.value.items] == [1, 2]


def test_collection_dict(parser, typecheck_flag):
    program = parser.parse('d = {"a": 1, "b": 2}', do_type_check=typecheck_flag, do_transform=True)
    stmt = get_assignment(program)
    assert_assignment(stmt, "d")  # No automatic local: prefix
    assert hasattr(stmt.value, "items")
    assert len(stmt.value.items) == 2
    for (k, v), (ek, ev) in zip(
        stmt.value.items, [(LiteralExpression("a"), LiteralExpression(1)), (LiteralExpression("b"), LiteralExpression(2))], strict=False
    ):
        assert isinstance(k, LiteralExpression)
        assert isinstance(v, LiteralExpression)
        assert k.value == ek.value
        assert v.value == ev.value


def test_collection_tuple(parser, typecheck_flag):
    program = parser.parse("t = (1, 2)", do_type_check=typecheck_flag, do_transform=True)
    stmt = get_assignment(program)
    assert hasattr(stmt.value, "items")
    # Check values without comparing location since it's now set by the parser
    assert len(stmt.value.items) == 2
    assert stmt.value.items[0].value == 1
    assert stmt.value.items[1].value == 2


def test_collection_empty(parser, typecheck_flag):
    program = parser.parse("a = []\nb = {}\nc = ()", do_type_check=typecheck_flag, do_transform=True)
    assert len(program.statements) == 3


# =========================
# 4. EXPRESSIONS
# =========================
def test_expression_arithmetic(parser, typecheck_flag):
    program = parser.parse("x = 1 + 2 * 3", do_type_check=typecheck_flag, do_transform=True)
    stmt = get_assignment(program)
    expr = stmt.value
    assert isinstance(expr, BinaryExpression)
    assert expr.operator == BinaryOperator.ADD
    assert isinstance(expr.right, BinaryExpression)
    assert expr.right.operator == BinaryOperator.MULTIPLY


def test_expression_parentheses(parser, typecheck_flag):
    program = parser.parse("x = (1 + 2) * 3", do_type_check=typecheck_flag, do_transform=True)
    stmt = get_assignment(program)
    expr = stmt.value
    assert isinstance(expr, BinaryExpression)
    assert expr.operator == BinaryOperator.MULTIPLY
    assert isinstance(expr.left, BinaryExpression)
    assert expr.left.operator == BinaryOperator.ADD


def test_expression_logical(parser, typecheck_flag):
    program = parser.parse("x = True and False or not True", do_type_check=typecheck_flag, do_transform=True)
    stmt = get_assignment(program)
    expr = stmt.value
    assert isinstance(expr, BinaryExpression)
    # Check for AND/OR/NOT in the tree
    assert any(
        op in [BinaryOperator.AND, BinaryOperator.OR]
        for op in [getattr(expr, "operator", None), getattr(getattr(expr, "left", None), "operator", None)]
    )


# =========================
# 5. CONTROL FLOW
# =========================
def test_if_else(parser, typecheck_flag):
    code = textwrap.dedent(
        """
    x = 0
    if x > 10:
        y = 1
    else:
        y = 2
    """
    )
    program = parser.parse(code, do_type_check=typecheck_flag, do_transform=True)
    stmt = get_conditional(program)
    assert isinstance(stmt.condition, BinaryExpression)
    assert stmt.condition.operator == BinaryOperator.GREATER_THAN
    assert len(stmt.body) == 1
    assert len(stmt.else_body) == 1


def test_while_loop(parser, typecheck_flag):
    code = textwrap.dedent(
        """
    x = 0
    while x < 10:
        x = x + 1
    """
    )
    program = parser.parse(code, do_type_check=typecheck_flag, do_transform=True)
    stmt = get_while_loop(program)
    assert isinstance(stmt, WhileLoop)
    assert isinstance(stmt.condition, BinaryExpression)
    assert stmt.condition.operator == BinaryOperator.LESS_THAN
    assert len(stmt.body) == 1


def test_elif_chain_structure(parser, typecheck_flag):
    """Test that elif chains create properly nested Conditional structures."""
    code = textwrap.dedent("""
        x = 5
        if x > 10:
            y = "high"
        elif x > 5:
            y = "medium"
        elif x > 0:
            y = "low"
        else:
            y = "zero"
    """)

    program = parser.parse(code, do_type_check=typecheck_flag, do_transform=True)
    conditional = get_conditional(program)

    # Verify proper nesting: if -> elif -> elif -> else
    assert isinstance(conditional, Conditional)
    assert conditional.condition.operator == BinaryOperator.GREATER_THAN

    # First elif should be in else_body
    first_elif = conditional.else_body[0]
    assert isinstance(first_elif, Conditional)
    assert first_elif.condition.operator == BinaryOperator.GREATER_THAN

    # Second elif should be in first elif's else_body
    second_elif = first_elif.else_body[0]
    assert isinstance(second_elif, Conditional)
    assert second_elif.condition.operator == BinaryOperator.GREATER_THAN

    # Final else should be in second elif's else_body
    final_else = second_elif.else_body
    assert isinstance(final_else, list)
    assert len(final_else) == 1
    assert not isinstance(final_else[0], Conditional)  # Should be assignment, not conditional


# TODO: Add for-loop, minimal/nested blocks, try/except/finally

# =========================
# 6. FUNCTIONS & CALLS
# =========================
# TODO: Add function definition, function call, nested calls, minimal function


# =========================
# 7. IMPORTS & SCOPE
# =========================
def test_import_statements(parser, typecheck_flag):
    # Test unquoted imports
    program = parser.parse(
        "import foo.bar\nimport math as m\nfrom collections import deque", do_type_check=typecheck_flag, do_transform=True
    )
    assert isinstance(program, Program)
    assert len(program.statements) == 3

    # First import: simple unquoted
    import_stmt = program.statements[0]
    assert isinstance(import_stmt, ImportStatement)
    assert import_stmt.module == "foo.bar"
    assert import_stmt.alias is None

    # Second import: unquoted with alias
    import_stmt2 = program.statements[1]
    assert isinstance(import_stmt2, ImportStatement)
    assert import_stmt2.module == "math"
    assert import_stmt2.alias == "m"

    # Third import: from-import unquoted
    import_stmt3 = program.statements[2]
    assert isinstance(import_stmt3, ImportFromStatement)
    assert import_stmt3.module == "collections"
    assert len(import_stmt3.names) == 1
    assert import_stmt3.names[0][0] == "deque"
    assert import_stmt3.names[0][1] is None


def test_import_alias():
    ParserCache.get_parser("dana")


def test_multiple_imports():
    ParserCache.get_parser("dana")


# =========================
# 8. TRY/EXCEPT/FINALLY
# =========================
# TODO: Add try/except, try/except/finally, raise, assert

# =========================
# 9. PASS/RETURN/BREAK/CONTINUE
# =========================
# TODO: Add pass, return, break, continue

# =========================
# 10. PROPERTY ACCESS & TRAILER
# =========================
# TODO: Add property access, chained calls, indexing


# =========================
# 11. MISCELLANEOUS
# =========================
def test_multiple_statements(parser, typecheck_flag):
    program = parser.parse('x = 42\ny = "test"\nlog("done")', do_type_check=typecheck_flag, do_transform=True)
    assert isinstance(program, Program)
    assert len(program.statements) == 3


def test_bare_identifier(parser, typecheck_flag):
    code = "private:x = 1\nprivate:x"
    program = parser.parse(code, do_type_check=typecheck_flag, do_transform=True)
    # First statement: assignment
    stmt1 = program.statements[0]
    assert hasattr(stmt1, "target") and stmt1.target.name == "private:x"
    # Second statement: bare identifier
    stmt2 = program.statements[1]
    if hasattr(stmt2, "name"):
        assert stmt2.name == "private:x"
    else:
        raise AssertionError(f"Unexpected statement type: {type(stmt2)}")


# =========================
# 12. NEGATIVE/ERROR CASES
# =========================
def test_incomplete_assignment_error(parser, typecheck_flag):
    with pytest.raises(Exception):  # noqa: B017
        parser.parse("x =", do_type_check=typecheck_flag, do_transform=True)


def test_unmatched_parentheses_error(parser, typecheck_flag):
    with pytest.raises(Exception):  # noqa: B017
        parser.parse("x = (1 + 2", do_type_check=typecheck_flag, do_transform=True)


def test_invalid_keyword_error(parser, typecheck_flag):
    import lark

    try:
        parser.parse("foo = break", do_type_check=typecheck_flag, do_transform=True)
    except lark.exceptions.UnexpectedToken:
        return  # Expected
    except Exception:
        return
    raise AssertionError("Expected an exception for invalid keyword, but none was raised.")


def test_type_error_mismatched_types(parser):
    code = "x = 1\nx = x + 'a'"
    with pytest.raises(Exception):  # noqa: B017
        parser.parse(code, do_type_check=True, do_transform=True)


def test_type_error_undefined_variable(parser):
    code = "y = x + 1"
    with pytest.raises(Exception):  # noqa: B017
        parser.parse(code, do_type_check=True, do_transform=True)


def test_type_error_invalid_operation(parser):
    code = "x = 'hello' - 1"
    with pytest.raises(Exception):  # noqa: B017
        parser.parse(code, do_type_check=True, do_transform=True)


def test_syntax_error_malformed_block(parser):
    code = "if x > 0:\n    y = 1\nelse:"
    with pytest.raises(Exception):  # noqa: B017
        parser.parse(code, do_type_check=False, do_transform=True)


# =========================
# 13. EDGE CASES & TODOs
# =========================
# TODO: Cover for-loop, function def/call, import, try/except/finally, pass/return/break/continue, property access, trailers, more error cases, only comments, blank lines, minimal/nested blocks, etc.
# See test_parse.py for more ideas.


@pytest.mark.parametrize(
    "code, expected_args, expected_kwargs, should_raise",
    [
        ("with foo(1, 2) as bar:\n    pass", [1, 2], {}, False),
        ("with foo(a=1, b=2) as bar:\n    pass", [], {"a": 1, "b": 2}, False),
        ("with foo(1, b=2) as bar:\n    pass", [1], {"b": 2}, False),
        ("with foo() as bar:\n    pass", [], {}, False),
        ("with foo(1, 2) as bar:\n    pass", [1, 2], {}, False),
        ("with foo(a=1, b=2) as bar:\n    pass", [], {"a": 1, "b": 2}, False),
        ("with foo(1, b=2) as bar:\n    pass", [1], {"b": 2}, False),
        ("with foo(1, 2) as bar:\n    pass", [1, 2], {}, False),
        ("with foo(a=1, b=2) as bar:\n    pass", [], {"a": 1, "b": 2}, False),
        ("with foo(1, b=2) as bar:\n    pass", [1], {"b": 2}, False),
        ("with foo() as bar:\n    pass", [], {}, False),
        ("with foo(a, b=1, c, d) as bar:\n    pass", None, None, True),  # Positional args after keyword args
    ],
)
def test_with_stmt_ast(code, expected_args, expected_kwargs, should_raise):
    parser = ParserCache.get_parser("dana")

    if should_raise:
        with pytest.raises(Exception):  # noqa: B017
            parser.parse(code, do_transform=True)
    else:
        program = parser.parse(code, do_transform=True)
        stmt = program.statements[0]
        assert isinstance(stmt, WithStatement)
        assert stmt.context_manager == "foo"  # Updated to use new field name
        assert [a.value for a in stmt.args] == expected_args
        assert {k: v.value for k, v in stmt.kwargs.items()} == expected_kwargs
        assert stmt.as_var == "bar"
        assert isinstance(stmt.body[0], PassStatement)


# Note: UseStatement functionality has been removed as part of grammar unification
# @pytest.mark.parametrize(
#     "code, expected_args, expected_kwargs, should_raise",
#     [
#         # Empty use statement
#         ("use()", [], {}, False),
#         # Single positional argument
#         ('use("mcp")', ["mcp"], {}, False),
#         # Multiple positional arguments
#         ('use("mcp", "server")', ["mcp", "server"], {}, False),
#         # Single keyword argument
#         ('use(url="http://localhost:8880")', [], {"url": "http://localhost:8880"}, False),
#         # Multiple keyword arguments
#         ('use(url="http://localhost", port=8080)', [], {"url": "http://localhost", "port": 8080}, False),
#         # Mixed positional and keyword arguments
#         ('use("mcp", url="http://localhost:8880")', ["mcp"], {"url": "http://localhost:8880"}, False),
#         (
#             'use("mcp", "websearch", url="http://localhost", port=8080)',
#             ["mcp", "websearch"],
#             {"url": "http://localhost", "port": 8080},
#             False,
#         ),
#         # Boolean and numeric arguments
#         ("use(True, count=42)", [True], {"count": 42}, False),
#         ("use(enabled=False, timeout=30.5)", [], {"enabled": False, "timeout": 30.5}, False),
#         # Variable arguments
#         ('x = "mcp"\nuse(x)', None, None, False),  # Special case - will check separately
#         ('url = "http://localhost"\nuse(service=url)', None, None, False),  # Special case - will check separately
#         # Error cases - positional after keyword
#         ('use(url="http://localhost", "mcp")', None, None, True),
#         ('use(a=1, b=2, "positional")', None, None, True),
#     ],
# )
# Note: UseStatement functionality has been removed as part of grammar unification
# def test_use_stmt_ast(code, expected_args, expected_kwargs, should_raise):
#     parser = ParserCache.get_parser("dana")
#
#     if should_raise:
#         with pytest.raises(Exception):  # noqa: B017
#             parser.parse(code, do_transform=True)
#     else:
#         program = parser.parse(code, do_transform=True)
#
#         # Handle multi-statement cases for variable tests
#         if "\n" in code:
#             # Find the use statement (should be the last statement)
#             use_stmt = None
#             for stmt in program.statements:
#                 if isinstance(stmt, UseStatement):
#                     use_stmt = stmt
#                     break
#             assert use_stmt is not None, "UseStatement not found in program"
#             stmt = use_stmt
#         else:
#             stmt = program.statements[0]
#
#         assert isinstance(stmt, UseStatement)
#
#         # For variable test cases, check structure but not exact values
#         if expected_args is None and expected_kwargs is None:
#             # Variable test cases - just check that we have the right structure
#             if "service=" in code:
#                 # use(service=url) case
#                 assert len(stmt.args) == 0
#                 assert len(stmt.kwargs) == 1
#                 assert "service" in stmt.kwargs
#                 assert isinstance(stmt.kwargs["service"], Identifier)
#             elif "use(x)" in code:
#                 # use(x) case
#                 assert len(stmt.args) == 1
#                 assert len(stmt.kwargs) == 0
#                 assert isinstance(stmt.args[0], Identifier)
#         else:
#             # Regular test cases - check exact values
#             if isinstance(expected_args, list):
#                 assert len(stmt.args) == len(expected_args)
#                 for actual, expected in zip(stmt.args, expected_args, strict=False):
#                     assert isinstance(actual, LiteralExpression)
#                     assert actual.value == expected
#
#             if isinstance(expected_kwargs, dict):
#                 assert len(stmt.kwargs) == len(expected_kwargs)
#                 for key, expected_value in expected_kwargs.items():
#                     assert key in stmt.kwargs
#                     assert isinstance(stmt.kwargs[key], LiteralExpression)
#                     assert stmt.kwargs[key].value == expected_value


# Note: UseStatement functionality has been removed as part of grammar unification
# def test_use_stmt_complex_expressions():
#     """Test use statements with complex expressions as arguments."""
#     parser = ParserCache.get_parser("dana")
#
#     # Test with binary expression
#     code = 'base = "http://localhost:"\nport = 8080\nuse(url=base + str(port))'
#     program = parser.parse(code, do_transform=True)
#
#     # Find the use statement
#     use_stmt = None
#     for stmt in program.statements:
#         if isinstance(stmt, UseStatement):
#             use_stmt = stmt
#             break
#
#     assert use_stmt is not None
#     assert isinstance(use_stmt, UseStatement)
#     assert len(use_stmt.args) == 0
#     assert len(use_stmt.kwargs) == 1
#     assert "url" in use_stmt.kwargs
#     # The value should be a function call (str(port)) - we don't need to verify the exact structure
#     # just that it's a complex expression, not a simple literal
#     assert not isinstance(use_stmt.kwargs["url"], LiteralExpression)


# Note: UseStatement functionality has been removed as part of grammar unification
# def test_use_stmt_in_context():
#     """Test use statement in a realistic context similar to the examples."""
#     parser = ParserCache.get_parser("dana")
#
#     code = textwrap.dedent(
#         """
#         log_level("DEBUG")
#         use("mcp", url="http://localhost:8880/websearch")
#         x = 42
#     """
#     ).strip()
#
#     program = parser.parse(code, do_transform=True)
#     assert len(program.statements) == 3
#
#     # Find the use statement (should be second)
#     use_stmt = program.statements[1]
#     assert isinstance(use_stmt, UseStatement)
#     assert len(use_stmt.args) == 1
#     assert use_stmt.args[0].value == "mcp"
#     assert len(use_stmt.kwargs) == 1
#     assert "url" in use_stmt.kwargs
#     assert use_stmt.kwargs["url"].value == "http://localhost:8880/websearch"


# Note: UseStatement functionality has been removed as part of grammar unification
# def test_with_use_stmt():
#     """Test with use(...) syntax for context manager usage."""
#     parser = ParserCache.get_parser("dana")
#
#     code = textwrap.dedent(
#         """
#         with use("mcp", url="http://localhost:8880/websearch") as mcp:
#             answer = reason("Who is the CEO of Aitomatic")
#         print(answer)
#     """
#     ).strip()
#
#     program = parser.parse(code, do_transform=True)
#     assert len(program.statements) == 2
#
#     # First statement should be a WithStatement using "use" as context manager
#     with_stmt = program.statements[0]
#     assert isinstance(with_stmt, WithStatement)
#     assert with_stmt.context_manager == "use"  # Updated to use new field name
#     assert len(with_stmt.args) == 1
#     assert with_stmt.args[0].value == "mcp"
#     assert len(with_stmt.kwargs) == 1
#     assert "url" in with_stmt.kwargs
#     assert with_stmt.kwargs["url"].value == "http://localhost:8880/websearch"
#     assert with_stmt.as_var == "mcp"
#     assert len(with_stmt.body) == 1


def test_with_direct_object():
    """Test with mcp_object syntax for direct context manager usage."""
    parser = ParserCache.get_parser("dana")

    code = textwrap.dedent(
        """
        mcp_resource = use("mcp", url="http://localhost:8880/websearch")
        with mcp_resource as mcp:
            answer = reason("Who is the CEO of Aitomatic")
        print(answer)
    """
    ).strip()

    program = parser.parse(code, do_transform=True)
    assert len(program.statements) == 3

    # Second statement should be a WithStatement using direct object as context manager
    with_stmt = program.statements[1]
    assert isinstance(with_stmt, WithStatement)
    assert isinstance(with_stmt.context_manager, Identifier)  # Should be an Identifier (expression)
    assert with_stmt.context_manager.name == "mcp_resource"  # No automatic local: prefix
    assert len(with_stmt.args) == 0  # No args when using direct object
    assert len(with_stmt.kwargs) == 0  # No kwargs when using direct object
    assert with_stmt.as_var == "mcp"
    assert len(with_stmt.body) == 1


def test_fstring_nested_expressions():
    ParserCache.get_parser("dana")


def test_fstring_mixed_content():
    ParserCache.get_parser("dana")


def test_identifier_with_underscore():
    ParserCache.get_parser("dana")


def test_binary_expression_operator_precedence():
    ParserCache.get_parser("dana")
