"""Step definitions for validation test fixtures."""

from __future__ import annotations

from datetime import datetime
from pathlib import Path

from behave import given, then, when
from behave.runner import Context
from pydantic import ValidationError as PydanticValidationError

from cleveragents.application.services.plan_service import PlanService
from cleveragents.config.settings import Settings
from cleveragents.core.exceptions import PlanError
from cleveragents.domain.models.core import (
    Change,
    OperationType,
    Project,
    ProjectSettings,
)
from cleveragents.domain.models.core.action import (
    ActionArgument,
    ArgumentRequirement,
    ArgumentType,
)

# NOTE: Sections 1, 1b, and 2 (AST security validation, RestrictedPython,
# Lambda AST validation) were removed as part of SEC1.  eval()/exec() are no
# longer used in stream_router.py; the SEC1 approach uses named operation and
# transform registries instead.  See features/security_eval.feature for the
# replacement tests.


# ──────────────────────────────────────────────────
# Section 3: Python content sanitization
# ──────────────────────────────────────────────────


@given("I have a plan service for sanitization tests")
def step_plan_service_for_sanitization(context: Context) -> None:
    settings = Settings()
    context.sanitize_service = PlanService(
        settings=settings,
        unit_of_work=None,  # type: ignore[arg-type]
        ai_provider=None,
    )


@when('I sanitize the python content "{content}"')
def step_sanitize_python_content(context: Context, content: str) -> None:
    result = context.sanitize_service._sanitize_python_content(content)
    context.sanitized_content = result[0]
    context.sanitized_error = result[1]
    context.sanitized_reason = result[2]


@when("I sanitize python content containing a null byte")
def step_sanitize_null_byte_content(context: Context) -> None:
    result = context.sanitize_service._sanitize_python_content("x = 1\x00")
    context.sanitized_content = result[0]
    context.sanitized_error = result[1]
    context.sanitized_reason = result[2]


@when('I sanitize the python content with code fences wrapping "{inner}"')
def step_sanitize_fenced_content(context: Context, inner: str) -> None:
    fenced = f"```python\n{inner}\n```"
    result = context.sanitize_service._sanitize_python_content(fenced)
    context.sanitized_content = result[0]
    context.sanitized_error = result[1]
    context.sanitized_reason = result[2]


@then('the sanitized content should be "{expected}"')
def step_check_sanitized_content(context: Context, expected: str) -> None:
    assert context.sanitized_content == expected, (
        f"Expected '{expected}', got '{context.sanitized_content}'"
    )


@then("the sanitization error should be None")
def step_check_sanitized_error_none(context: Context) -> None:
    assert context.sanitized_error is None, (
        f"Expected no error, got: {context.sanitized_error}"
    )


@then("the sanitization error should not be None")
def step_check_sanitized_error_not_none(context: Context) -> None:
    assert context.sanitized_error is not None, "Expected a SyntaxError"


@then("the sanitization reason should be None")
def step_check_sanitized_reason_none(context: Context) -> None:
    assert context.sanitized_reason is None, (
        f"Expected no reason, got: {context.sanitized_reason}"
    )


@then('the sanitization reason should be "{expected}"')
def step_check_sanitized_reason(context: Context, expected: str) -> None:
    assert context.sanitized_reason == expected, (
        f"Expected reason '{expected}', got '{context.sanitized_reason}'"
    )


# ──────────────────────────────────────────────────
# Section 4: Project model validation
# ──────────────────────────────────────────────────


@when('I try to create a project with name "{name}"')
def step_try_create_project_invalid_name(context: Context, name: str) -> None:
    context.project_error = None
    context.created_project = None
    try:
        context.created_project = Project(
            id=None,
            name=name,
            path=Path("/tmp/test-project"),
            created_at=datetime.now(),
            updated_at=datetime.now(),
            current_plan_id=None,
            settings=ProjectSettings(),
        )
    except (PydanticValidationError, ValueError) as exc:
        context.project_error = exc


@then('a project validation error should be raised mentioning "{text}"')
def step_check_project_validation_error(context: Context, text: str) -> None:
    assert context.project_error is not None, "Expected a validation error"
    assert text.lower() in str(context.project_error).lower(), (
        f"Expected '{text}' in error: {context.project_error}"
    )


@when('I create a project fixture with name "{name}"')
def step_create_project_valid_name(context: Context, name: str) -> None:
    context.created_project = Project(
        id=None,
        name=name,
        path=Path("/tmp/test-project"),
        created_at=datetime.now(),
        updated_at=datetime.now(),
        current_plan_id=None,
        settings=ProjectSettings(),
    )


@then("the project should be created with that name")
def step_check_project_created_name(context: Context) -> None:
    assert context.created_project is not None
    assert context.created_project.name is not None


@when('I create a project with relative path "{rel_path}"')
def step_create_project_relative_path(context: Context, rel_path: str) -> None:
    context.created_project = Project(
        id=None,
        name="test-project",
        path=Path(rel_path),
        created_at=datetime.now(),
        updated_at=datetime.now(),
        current_plan_id=None,
        settings=ProjectSettings(),
    )


@then("the project fixture path should be absolute")
def step_check_project_path_absolute(context: Context) -> None:
    assert context.created_project.path.is_absolute(), (
        f"Expected absolute path, got: {context.created_project.path}"
    )


@when("I try to create a project with empty name")
def step_try_create_project_empty_name(context: Context) -> None:
    context.project_error = None
    try:
        context.created_project = Project(
            id=None,
            name="",
            path=Path("/tmp/test-project"),
            created_at=datetime.now(),
            updated_at=datetime.now(),
            current_plan_id=None,
            settings=ProjectSettings(),
        )
    except (PydanticValidationError, ValueError) as exc:
        context.project_error = exc


@then("a project validation error should be raised")
def step_check_project_validation_error_generic(context: Context) -> None:
    assert context.project_error is not None, "Expected a validation error"


# ──────────────────────────────────────────────────
# Section 5: Change list coercion
# ──────────────────────────────────────────────────


@given("I have a plan service for coercion tests")
def step_plan_service_for_coercion(context: Context) -> None:
    settings = Settings()
    context.coerce_service = PlanService(
        settings=settings,
        unit_of_work=None,  # type: ignore[arg-type]
        ai_provider=None,
    )


@when("I coerce an empty change list")
def step_coerce_empty_list(context: Context) -> None:
    context.coerced_result = context.coerce_service._coerce_change_list(
        [],
        plan_name="test-plan",
        provider_name="test-provider",
    )


@then("the coerced result should be an empty list")
def step_check_coerced_empty(context: Context) -> None:
    assert context.coerced_result == [], (
        f"Expected empty list, got: {context.coerced_result}"
    )


@when("I coerce a list with one dict entry and one Change entry")
def step_coerce_mixed_list(context: Context) -> None:
    dict_entry = {
        "id": None,
        "plan_id": 1,
        "file_path": "dict_file.py",
        "operation": OperationType.CREATE,
        "original_content": None,
        "new_content": "# from dict",
        "new_path": None,
        "applied": False,
        "applied_at": None,
        "created_at": datetime.now(),
    }
    change_entry = Change(
        id=None,
        plan_id=1,
        file_path="change_file.py",
        operation=OperationType.CREATE,
        original_content=None,
        new_content="# from Change",
        new_path=None,
        applied=False,
        applied_at=None,
        created_at=datetime.now(),
    )
    context.coerced_result = context.coerce_service._coerce_change_list(
        [dict_entry, change_entry],
        plan_name="test-plan",
        provider_name="test-provider",
    )


@then("the coerced result should have {count:d} changes")
def step_check_coerced_count(context: Context, count: int) -> None:
    assert len(context.coerced_result) == count, (
        f"Expected {count} changes, got {len(context.coerced_result)}"
    )


@when("I try to coerce a non-list input")
def step_coerce_non_list(context: Context) -> None:
    context.coerce_error = None
    try:
        context.coerce_service._coerce_change_list(
            {"not": "a list"},  # type: ignore[arg-type]
            plan_name="test-plan",
            provider_name="test-provider",
        )
    except PlanError as exc:
        context.coerce_error = exc


@then('a PlanError should be raised mentioning "{text}"')
def step_check_coerce_plan_error(context: Context, text: str) -> None:
    assert context.coerce_error is not None, "Expected PlanError"
    assert isinstance(context.coerce_error, PlanError)
    assert text in str(context.coerce_error.message), (
        f"Expected '{text}' in error: {context.coerce_error.message}"
    )


@when("I try to coerce a list containing an integer")
def step_coerce_list_with_int(context: Context) -> None:
    context.coerce_error = None
    try:
        context.coerce_service._coerce_change_list(
            [42],
            plan_name="test-plan",
            provider_name="test-provider",
        )
    except PlanError as exc:
        context.coerce_error = exc


# ──────────────────────────────────────────────────
# Section 6: ActionArgument parsing edge cases
# ──────────────────────────────────────────────────


@when('I try to parse action argument fixture "{arg_string}"')
def step_try_parse_arg_fixture(context: Context, arg_string: str) -> None:
    context.arg_parse_error = None
    try:
        ActionArgument.parse(arg_string)
    except (ValueError, KeyError) as exc:
        context.arg_parse_error = exc


@then("an argument fixture parse error should be raised")
def step_check_arg_parse_error(context: Context) -> None:
    assert context.arg_parse_error is not None, "Expected a parse error"


@when('I try to create argument with name "{name}"')
def step_try_create_arg_with_name(context: Context, name: str) -> None:
    context.arg_create_error = None
    context.created_arg = None
    try:
        context.created_arg = ActionArgument(
            name=name,
            arg_type=ArgumentType.STRING,
            requirement=ArgumentRequirement.OPTIONAL,
            description="Test argument",
        )
    except (PydanticValidationError, ValueError) as exc:
        context.arg_create_error = exc


@then("the argument name should be accepted as valid identifier")
def step_check_arg_name_accepted(context: Context) -> None:
    # "class" is a valid Python identifier (keyword but still passes str.isidentifier())
    assert context.created_arg is not None, (
        f"Expected argument creation to succeed, got error: {context.arg_create_error}"
    )
    assert context.created_arg.name == "class"