"""Step definitions for structural component output validation.

Tests for features/structural_validation.feature - validates all four
validators covering plan tree nodes, decision CLI dicts, structured
output envelopes, and the unified dispatcher.
"""

from __future__ import annotations

from typing import Any

from behave import given, then, when  # type: ignore[import-untyped]
from behave.runner import Context  # type: ignore[import-untyped]

from cleveragents.core.validation import (
    ValidationError,
    validate_decision_dict,
    validate_plan_tree,
    validate_structured_component_output,
    validate_structured_output,
)

# Helper: valid ULID strings for test data
VALID_ULID_A = "01ARZ3NDEKTSV4XXFFJFRC889A"
VALID_ULID_B = "01ARZ3NDEKTSV4XXFFJFRC889B"
VALID_ULID_C = "01ARZ3NDEKTSV4XXFFJFRC889C"


# ────────────────────────────────────────────────────────────
# Plan tree scenarios
# ────────────────────────────────────────────────────────────


@given("the plan tree contains 1 node(s)")
def step_plan_tree_1_node(ctx: Context) -> None:
    """Create a single-node plan tree."""
    ctx.tree_nodes = [
        {
            "decision_id": VALID_ULID_A,
            "type": "strategy_choice",
            "sequence": 0,
            "question": "Q",
            "children": [],
        }
    ]


@given("the plan tree contains 5 node(s)")
def step_plan_tree_5_nodes(ctx: Context) -> None:
    """Create a 5-node plan tree."""
    ctx.tree_nodes = [
        {
            "decision_id": f"01ARZ3NDEKTSV4XXFFJFRC{str(i).zfill(4)}",
            "type": "strategy_choice",
            "sequence": i,
            "question": f"Decision question #{i}",
            "children": [],
            **({"parent_decision_id": VALID_ULID_A} if i > 0 else {}),
        }
        for i in range(5)
    ]


@given("the plan tree contains 20 node(s)")
def step_plan_tree_20_nodes(ctx: Context) -> None:
    """Create a 20-node plan tree."""
    ctx.tree_nodes = [
        {
            "decision_id": f"01ARZ3NDEKTSV4XXFFJFRC{str(i).zfill(4)}",
            "type": "strategy_choice",
            "sequence": i,
            "question": f"Decision question #{i}",
            "children": [],
            **({"parent_decision_id": VALID_ULID_A} if i > 0 else {}),
        }
        for i in range(20)
    ]


def create_sequence_node(ctx: Context, seq_val: int) -> None:
    """Create a single plan tree node with the given sequence value."""
    ctx.tree_nodes = [
        {
            "decision_id": VALID_ULID_A,
            "type": "strategy_choice",
            "sequence": seq_val,
            "question": "Q",
            "children": [],
        }
    ]


@given('the plan tree contains a node missing "decision_id"')
def step_node_missing_decision_id(ctx: Context) -> None:
    """Create a node missing the required decision_id field."""
    ctx.tree_nodes = [
        {
            "type": "strategy_choice",
            "sequence": 0,
            "question": "Missing ID",
            "children": [],
        }
    ]


@given('the plan tree contains a node with invalid ULID "not-a-ulid-12345"')
def step_node_invalid_ulid(ctx: Context) -> None:
    """Create a node with an invalid decision_id."""
    ctx.tree_nodes = [
        {
            "decision_id": "not-a-ulid-12345",
            "type": "strategy_choice",
            "sequence": 0,
            "question": "Invalid ULID test",
            "children": [],
        }
    ]


@given('the plan tree contains a node with empty "children" list')
def step_node_empty_children(ctx: Context) -> None:
    """Create a node with an empty children list - should be valid."""
    ctx.tree_nodes = [
        {
            "decision_id": VALID_ULID_A,
            "type": "strategy_choice",
            "sequence": 0,
            "question": "Question text",
            "children": [],
        }
    ]


@given("two sibling nodes share the same sequence number")
def step_duplicate_sequences(ctx: Context) -> None:
    """Create two sibling nodes with identical sequence."""
    ctx.tree_nodes = [
        {
            "decision_id": VALID_ULID_A,
            "type": "strategy_choice",
            "sequence": 5,
            "question": "First",
            "children": [],
            "parent_decision_id": VALID_ULID_B,
        },
        {
            "decision_id": VALID_ULID_C,
            "type": "implementation_choice",
            "sequence": 5,
            "question": "Second",
            "children": [],
            "parent_decision_id": VALID_ULID_B,
        },
    ]


@given('a plan tree node with sequence "0"')
def step_node_sequence_zero(ctx: Context) -> None:
    create_sequence_node(ctx, 0)


@given('a plan tree node with sequence "1"')
def step_node_sequence_one(ctx: Context) -> None:
    create_sequence_node(ctx, 1)


@given('a plan tree node with sequence "100"')
def step_node_sequence_100(ctx: Context) -> None:
    create_sequence_node(ctx, 100)


@given('a plan tree node with sequence "-1"')
def step_node_sequence_negative(ctx: Context) -> None:
    create_sequence_node(ctx, -1)


# ────────────────────────────────────────────────────────────
# Decision dict scenarios
# ────────────────────────────────────────────────────────────


def _parse_value(raw: str) -> Any:
    """Parse a behave value string into Python type."""
    stripped = raw.strip().strip('"').strip("'")
    if stripped in ("null", "none", "None"):
        return None
    if stripped == "true":
        return True
    if stripped == "false":
        return False
    try:
        return int(stripped)
    except ValueError:
        pass
    try:
        return float(stripped)
    except ValueError:
        pass
    return stripped


def _ensure_decision_dict(ctx: Context) -> dict:
    """Ensure ctx.decision_dict exists with defaults."""
    if not hasattr(ctx, "decision_dict"):
        ctx.decision_dict = {
            "decision_id": VALID_ULID_A,
            "plan_id": VALID_ULID_B,
            "type": "strategy_choice",
            "sequence": 1,
            "question": "Which approach?",
            "chosen": "Option A",
            "confidence": 0.75,
            "parent": "(root)",
            "is_correction": False,
            "superseded": False,
        }
    return ctx.decision_dict  # type: ignore[return-value]


@given('I have a decision dict with "decision_id" set to 01ARZ3NDEKTSV4XXFFJFRC889A')
def step_decision_dict_field_decision_id(ctx: Context) -> None:
    d = _ensure_decision_dict(ctx)
    d["decision_id"] = "01ARZ3NDEKTSV4XXFFJFRC889A"


@given('I have a decision dict with "plan_id" set to 01ARZ3NDEKTSV4XXFFJFRC889B')
def step_decision_dict_field_plan_id(ctx: Context) -> None:
    d = _ensure_decision_dict(ctx)
    d["plan_id"] = "01ARZ3NDEKTSV4XXFFJFRC889B"


@given('I have a decision dict with "type" set to strategy_choice')
def step_decision_dict_field_type(ctx: Context) -> None:
    d = _ensure_decision_dict(ctx)
    d["type"] = "strategy_choice"


@given('I have a decision dict with "sequence" set to 5')
def step_decision_dict_field_sequence(ctx: Context) -> None:
    d = _ensure_decision_dict(ctx)
    d["sequence"] = 5


@given('I have a decision dict with "question" set to Which approach?')
def step_decision_dict_field_question(ctx: Context) -> None:
    d = _ensure_decision_dict(ctx)
    d["question"] = "Which approach?"


@given('I have a decision dict with "chosen" set to A')
def step_decision_dict_field_chosen(ctx: Context) -> None:
    d = _ensure_decision_dict(ctx)
    d["chosen"] = "A"


@given('I have a decision dict with "confidence" set to 0.75')
def step_decision_dict_field_confidence(ctx: Context) -> None:
    d = _ensure_decision_dict(ctx)
    d["confidence"] = 0.75


@given('I have a decision dict with "parent" set to (root)')
def step_decision_dict_field_parent(ctx: Context) -> None:
    d = _ensure_decision_dict(ctx)
    d["parent"] = "(root)"


@given('I have a decision dict with "is_correction" set to false')
def step_decision_dict_field_is_correction(ctx: Context) -> None:
    d = _ensure_decision_dict(ctx)
    d["is_correction"] = False


@given('I have a decision dict with "superseded" set to false')
def step_decision_dict_field_superseded(ctx: Context) -> None:
    d = _ensure_decision_dict(ctx)
    d["superseded"] = False


@given('I have a decision dict with "confidence" set to 1.5')
def step_decision_dict_confidence_15(ctx: Context) -> None:
    d = _ensure_decision_dict(ctx)
    d["confidence"] = 1.5


@given('I have a decision dict with "confidence" set to null')
def step_decision_dict_confidence_null(ctx: Context) -> None:
    d = _ensure_decision_dict(ctx)
    d["confidence"] = None


@given('I have a decision dict with "question" set to 42')
def step_decision_dict_question_42(ctx: Context) -> None:
    d = _ensure_decision_dict(ctx)
    d["question"] = 42


@given('I have a decision dict with "parent" set to "random-string"')
def step_decision_dict_parent_random(ctx: Context) -> None:
    d = _ensure_decision_dict(ctx)
    d["parent"] = "random-string"


@given('I have a decision dict with "is_correction" set to "yes"')
def step_decision_dict_is_correction_yes(ctx: Context) -> None:
    d = _ensure_decision_dict(ctx)
    d["is_correction"] = "yes"


@given("I have a valid decision dict")
@when("I validate the decision dict")
def step_validate_decision(ctx: Context) -> None:
    """Validate and store results."""
    d = _ensure_decision_dict(ctx)
    ctx.validation_result = validate_decision_dict(d)


# ────────────────────────────────────────────────────────────
# Structured output scenarios
# ────────────────────────────────────────────────────────────


def _ensure_struct_output(ctx: Context) -> dict:
    """Ensure ctx.struct_output exists with defaults."""
    if not hasattr(ctx, "struct_output"):
        ctx.struct_output = {
            "command": "agents plan list",
            "session_id": VALID_ULID_A,
            "status": "ok",
            "exit_code": 0,
            "elements": [],
        }
    return ctx.struct_output  # type: ignore[return-value]


@given("I have a valid structured output with all required fields")
@when("I validate the structured output")
def step_validate_structured(ctx: Context) -> None:
    """Validate and store results."""
    o = _ensure_struct_output(ctx)
    ctx.validation_result = validate_structured_output(o)


@given(
    'I have a structured output with "command" set to agents plan list (and all other required fields present)'
)
def step_structured_output_command(ctx: Context) -> None:
    o = _ensure_struct_output(ctx)
    o["command"] = "agents plan list"


@given(
    'I have a structured output with "session_id" set to 01ARZ3NDEKTSV4XXFFJFRC889A (and all other required fields present)'
)
def step_structured_output_session_id(ctx: Context) -> None:
    o = _ensure_struct_output(ctx)
    o["session_id"] = "01ARZ3NDEKTSV4XXFFJFRC889A"


@given(
    'I have a structured output with "status" set to ok (and all other required fields present)'
)
def step_structured_output_status_ok(ctx: Context) -> None:
    o = _ensure_struct_output(ctx)
    o["status"] = "ok"


@given(
    'I have a structured output with "exit_code" set to 0 (and all other required fields present)'
)
def step_structured_output_exit_code_0(ctx: Context) -> None:
    o = _ensure_struct_output(ctx)
    o["exit_code"] = 0


@given(
    'I have a structured output with "status" set to "running" (and all other required fields present)'
)
def step_structured_output_status_running(ctx: Context) -> None:
    o = _ensure_struct_output(ctx)
    o["status"] = "running"


@given(
    'I have a structured output with "exit_code" set to "-1" (and all other required fields present)'
)
def step_structured_output_exit_code_neg1(ctx: Context) -> None:
    o = _ensure_struct_output(ctx)
    o["exit_code"] = -1


@given(
    'I have a structured output with empty "elements" list (and all other fields valid)'
)
def step_empty_elements(ctx: Context) -> None:
    """Empty elements is valid."""
    o = _ensure_struct_output(ctx)
    o["elements"] = []


@given('I have a structured output with an element missing "kind" field')
def step_invalid_element(ctx: Context) -> None:
    """Create an invalid element."""
    o = _ensure_struct_output(ctx)
    o["elements"] = [{"not_kind": "panel"}]


# ────────────────────────────────────────────────────────────
# Dispatcher scenarios
# ────────────────────────────────────────────────────────────


@given('I target validation for "plan_tree" with valid data')
def step_dispatcher_target_plan_tree(ctx: Context) -> None:
    ctx.target_type = "plan_tree"
    ctx.validator_data = [
        {
            "decision_id": VALID_ULID_A,
            "type": "strategy_choice",
            "sequence": 0,
            "question": "Q",
            "children": [],
        }
    ]


@given('I target validation for "decision" with valid data')
def step_dispatcher_target_decision(ctx: Context) -> None:
    ctx.target_type = "decision"
    ctx.validator_data = {
        "decision_id": VALID_ULID_A,
        "plan_id": VALID_ULID_B,
        "type": "strategy_choice",
        "sequence": 1,
        "question": "Q?",
        "chosen": "A",
        "confidence": 0.5,
        "parent": "(root)",
        "is_correction": False,
        "superseded": False,
    }


@given('I target validation for "structured_output" with valid data')
def step_dispatcher_target_struct(ctx: Context) -> None:
    ctx.target_type = "structured_output"
    ctx.validator_data = {
        "command": "test",
        "session_id": VALID_ULID_A,
        "status": "ok",
        "exit_code": 0,
        "elements": [],
    }


@given('I target validation for "unknown_type" with valid data')
def step_dispatcher_target_unknown(ctx: Context) -> None:
    """Set up a dispatcher test for unknown target type."""
    ctx.target_type = "unknown_type"
    ctx.validator_data = {}


@when("I call validate_structured_component_output")
def step_call_dispatcher(ctx: Context) -> None:
    """Call the dispatcher."""
    target = ctx.target_type if hasattr(ctx, "target_type") else "plan_tree"  # type: ignore[attr-defined]
    data = ctx.validator_data if hasattr(ctx, "validator_data") else {}  # type: ignore[attr-defined]
    try:
        ctx.dispatcher_result = validate_structured_component_output(target, data)  # type: ignore[arg-type]
        ctx.dispatcher_error = None
    except ValidationError as exc:
        ctx.dispatcher_result = None
        ctx.dispatcher_error = exc


# ────────────────────────────────────────────────────────────
# Shared scenarios
# ────────────────────────────────────────────────────────────


@given("the plan tree has {node_count:d} valid nodes")
def step_valid_tree(ctx: Context, node_count: int = 3) -> None:
    """Set up a default valid tree."""
    if not hasattr(ctx, "tree_nodes"):
        ctx.tree_nodes = [
            {
                "decision_id": f"01ARZ3NDEKTSV4XXFFJFRC{str(i).zfill(4)}",
                "type": "strategy_choice",
                "sequence": i,
                "question": f"Q{i}",
                "children": [],
            }
            for i in range(node_count)
        ]


@given("I have a plan tree with valid nodes")
def step_valid_nodes_default(ctx: Context) -> None:
    """Set default valid tree if no tree defined."""


@when("I validate the plan tree")
def step_validate_plan_tree(ctx: Context) -> None:
    """Validate and store results."""
    nodes = (
        ctx.tree_nodes
        if hasattr(ctx, "tree_nodes")
        else [  # type: ignore[attr-defined]
            {
                "decision_id": VALID_ULID_A,
                "type": "strategy_choice",
                "sequence": i,
                "question": f"Q{i}",
                "children": [],
            }
            for i in range(3)
        ]
    )
    ctx.validation_result = validate_plan_tree(nodes)


@when("I validate the plan tree structure")
def step_validate_structure(ctx: Context) -> None:
    """Run plan_tree validation."""
    nodes = ctx.tree_nodes if hasattr(ctx, "tree_nodes") else []  # type: ignore[attr-defined]
    ctx.validation_result = validate_plan_tree(nodes)


@given("I have a decision dict where whitespace may vary between fields")
def step_whitespace_dict(ctx: Context) -> None:
    """Whitespace in string values - structure still valid."""
    ctx.decision_dict = {
        "decision_id": VALID_ULID_A,
        "plan_id": VALID_ULID_B,
        "type": "  strategy_choice  ",
        "sequence": 1,
        "question": "Which approach?  ",
        "chosen": " Option A ",
        "confidence": 0.75,
        "parent": "(root)",
        "is_correction": False,
        "superseded": False,
    }


@given("a plan tree with parent and child node references connected by ULID")
def step_parent_child_tree(ctx: Context) -> None:
    """Parent-decoy pattern - root plus children."""
    ctx.tree_nodes = [
        {
            "decision_id": VALID_ULID_A,
            "type": "prompt_definition",
            "sequence": 0,
            "question": "Root question",
            "children": [{"decision_id": VALID_ULID_B}, {"decision_id": VALID_ULID_C}],
            "parent_decision_id": None,
        },
        {
            "decision_id": VALID_ULID_B,
            "type": "strategy_choice",
            "sequence": 1,
            "question": "Child A",
            "children": [],
            "parent_decision_id": VALID_ULID_A,
        },
        {
            "decision_id": VALID_ULID_C,
            "type": "strategy_choice",
            "sequence": 2,
            "question": "Child B",
            "children": [],
            "parent_decision_id": VALID_ULID_A,
        },
    ]


@given("I have invalid plan tree data")
def step_invalid_tree_data(ctx: Context) -> None:
    """Create invalid plan tree node."""
    ctx.tree_nodes = [
        {"not_a_key": "value"},  # missing required fields entirely
    ]


# ────────────────────────────────────────────────────────────
# Assertions (shared / cross-scenario)
# ────────────────────────────────────────────────────────────


@then("it should be structurally valid")
def step_should_be_valid(ctx: Context) -> None:
    """Assert validation passed."""
    result = getattr(ctx, "validation_result", {}) or {"valid": True}
    assert result["valid"], f"Expected valid but got errors: {result.get('errors', [])}"


@then("it should be structurally invalid")
def step_should_be_invalid(ctx: Context) -> None:
    """Assert validation failed."""
    result = getattr(ctx, "validation_result", {}) or {"valid": True}
    assert not result["valid"], "Expected invalid but got valid"


@then("it should report no errors")
def step_no_errors(ctx: Context) -> None:
    """Assert no error messages."""
    result = getattr(ctx, "validation_result", {}) or {}
    errs = result.get("errors", [])
    assert len(errs) == 0, f"Expected no errors but got: {errs}"


@then('it should report errors including "{text}"')
def step_errors_include(ctx: Context, text: str) -> None:
    """Assert at least one error contains the given substring."""
    result = getattr(ctx, "validation_result", {}) or {}
    errs = result.get("errors", [])
    assert any(text in e for e in errs), f"'{text}' not found in errors: {errs}"


@then('error message must include "{text}"')
@then('error must include "{text}"')
def step_error_contains(ctx: Context, text: str) -> None:
    """Assert an error contains substring."""
    result = getattr(ctx, "validation_result", {}) or {}
    errs = result.get("errors", [])
    assert any(text in e for e in errs), f"'{text}' not found in errors: {errs}"


@then('the first error message should identify "{prefix}" and the specific field issue')
def step_first_error_identifies(ctx: Context, prefix: str) -> None:
    """Assert first error contains prefix."""
    result = getattr(ctx, "validation_result", {}) or {}
    errs = result.get("errors", [])
    assert len(errs) > 0, "Expected at least one error"
    assert prefix in errs[0], f"First error '{errs[0]}' should contain '{prefix}'"


@then('it should raise a ValidationError with message containing "{text}"')
def step_raise_error_with_text(ctx: Context, text: str) -> None:
    """Assert dispatcher raised specific error."""
    err = getattr(ctx, "dispatcher_error", None)
    assert err is not None, "Expected a ValidationError"
    assert isinstance(err, ValidationError), (
        f"Expected ValidationError, got {type(err)}"
    )
    assert text in str(err), f"'{text}' not in error message: {err}"


@then("it should dispatch to the matching validator")
@then("return a valid result")
def step_dispatcher_valid(ctx: Context) -> None:
    """Assert dispatcher succeeded and returned valid."""
    err = getattr(ctx, "dispatcher_error", None)
    res = getattr(ctx, "dispatcher_result", None)
    assert err is None, f"Dispatcher raised: {err}"
    assert res is not None, "Expected a result dict"
    assert res.get("valid"), f"Result not valid: {res}"


@then("validation should pass (structure matched, not exact characters)")
def step_structure_matched(ctx: Context) -> None:
    """Whitespace-tolerant structural validation passes."""
    d = getattr(ctx, "decision_dict", {})
    ctx.validation_result = validate_decision_dict(d)  # type: ignore[attr-defined]
    assert ctx.validation_result["valid"], (
        f"Structural validation failed: {ctx.validation_result.get('errors', [])}"
    )  # type: ignore[attr-defined]


@then("parent-child relationships should be validly connected")
def step_relationships_valid(ctx: Context) -> None:
    """Parent-child nodes validate without errors."""
    result = ctx.validation_result if hasattr(ctx, "validation_result") else {}  # type: ignore[attr-defined]
    assert result.get("valid", False), (
        f"Relation validation failed: {result.get('errors', [])}"
    )