"""
AI Agent result capture release decision owner-response readback snapshot.

Loads the latest committed P2-144 owner-response readback package. This module
only reads back the P2-143 preflight state; it never treats absence/readback as
receipt, approval, reviewer queue write, Gateway queue write, Telegram send,
Bot API call, result capture, learning, PlayBook trust, secret read,
production write, or destructive operation.
"""

from __future__ import annotations

import json
import re
from pathlib import Path
from typing import Any

from src.services.snapshot_paths import default_evaluations_dir

_DEFAULT_EVALUATIONS_DIR = default_evaluations_dir(Path(__file__))
_SNAPSHOT_PATTERN = "ai_agent_result_capture_release_decision_owner_response_readback_*.json"
_SCHEMA_VERSION = "ai_agent_result_capture_release_decision_owner_response_readback_v1"
_RUNTIME_AUTHORITY = "result_capture_release_decision_owner_response_readback_only_no_live_write"


def load_latest_ai_agent_result_capture_release_decision_owner_response_readback(
    evaluations_dir: Path | None = None,
) -> dict[str, Any]:
    """Load the newest committed release decision owner-response readback."""
    directory = evaluations_dir or _DEFAULT_EVALUATIONS_DIR
    candidates = sorted(directory.glob(_SNAPSHOT_PATTERN))
    if not candidates:
        raise FileNotFoundError(
            f"no AI Agent result capture release decision owner response readback snapshots found in {directory}"
        )

    latest = candidates[-1]
    with latest.open(encoding="utf-8") as handle:
        payload = json.load(handle)

    if not isinstance(payload, dict):
        raise ValueError(f"{latest}: expected JSON object")

    label = str(latest)
    _require_schema(payload, label)
    _require_prior(payload, label)
    _require_truth(payload, label)
    _require_response_readback_lanes(payload, label)
    _require_validation_checks(payload, label)
    _require_rejection_guards(payload, label)
    _require_actions(payload, label)
    _require_display_redaction(payload, label)
    _require_no_forbidden_display_terms(payload, label)
    _require_rollup_consistency(payload, label)
    return payload


def _require_schema(payload: dict[str, Any], label: str) -> None:
    if payload.get("schema_version") != _SCHEMA_VERSION:
        raise ValueError(f"{label}: expected schema_version={_SCHEMA_VERSION}")
    status = payload.get("program_status") or {}
    expected = {
        "current_priority": "P2",
        "current_task_id": "P2-144",
        "next_task_id": "P2-145",
        "read_only_mode": True,
        "runtime_authority": _RUNTIME_AUTHORITY,
        "overall_completion_percent": 100,
    }
    mismatches = _mismatches(status, expected)
    if mismatches:
        raise ValueError(f"{label}: program_status mismatch: {mismatches}")
    if not status.get("status_note"):
        raise ValueError(f"{label}: program_status.status_note is required")


def _require_prior(payload: dict[str, Any], label: str) -> None:
    prior = payload.get("prior_owner_response_preflight") or {}
    expected = {
        "schema_version": "ai_agent_result_capture_release_decision_owner_response_preflight_v1",
        "current_task_id": "P2-143",
        "next_task_id": "P2-144",
        "response_intake_lane_count": 5,
        "required_owner_field_count": 18,
        "intake_validation_check_count": 6,
        "rejection_guard_count": 6,
        "operator_action_count": 5,
        "waiting_external_response_count": 5,
        "approval_required_subtotal": 12,
        "blocked_and_critical_subtotal": 12,
    }
    expected.update(_owner_response_zero_counts())
    mismatches = _mismatches(prior, expected)
    if mismatches:
        raise ValueError(f"{label}: prior_owner_response_preflight mismatch: {mismatches}")
    if not prior.get("readiness_note"):
        raise ValueError(f"{label}: prior_owner_response_preflight.readiness_note is required")


def _require_truth(payload: dict[str, Any], label: str) -> None:
    truth = payload.get("owner_response_readback_truth") or {}
    required_true = {
        "p2_143_preflight_loaded",
        "p2_142_war_room_baseline_preserved",
        "owner_response_readback_ready",
        "readback_only_mode",
        "no_external_response_received",
        "no_raw_payload_required",
        "redaction_contract_loaded",
        "rejection_policy_preserved",
    }
    missing = sorted(field for field in required_true if truth.get(field) is not True)
    if missing:
        raise ValueError(f"{label}: owner response readback flags must remain true: {missing}")

    required_false = {
        "owner_response_received",
        "owner_response_accepted",
        "owner_response_rejected",
        "redacted_payload_ingested",
        "owner_release_authorized",
        "owner_release_approved",
        "owner_review_approved",
        "owner_decision_approved",
        "verifier_decision_approved",
        "maintenance_window_approved",
        "rollback_owner_confirmed",
        "post_release_verifier_ready",
        "final_release_candidate_approved",
        "final_release_candidate_passed",
        "release_decision_passed",
        "release_authorization_granted",
        "release_authorization_passed",
        "rollback_release_passed",
        "live_apply_release_passed",
        "writer_apply_enabled",
        "execution_apply_enabled",
        "receipt_write_enabled",
        "reviewer_queue_write_enabled",
        "gateway_queue_write_enabled",
        "telegram_send_enabled",
        "bot_api_call_enabled",
        "report_receipt_write_enabled",
        "result_capture_write_enabled",
        "learning_write_enabled",
        "playbook_trust_write_enabled",
        "production_write_enabled",
        "secret_read_enabled",
        "destructive_operation_enabled",
    }
    unsafe = sorted(field for field in required_false if truth.get(field) is not False)
    if unsafe:
        raise ValueError(f"{label}: owner response live/send/write flags must remain false: {unsafe}")

    non_zero = sorted(field for field in _owner_response_zero_counts() if truth.get(field) != 0)
    if non_zero:
        raise ValueError(f"{label}: owner response live counters must remain zero: {non_zero}")
    if not truth.get("truth_note"):
        raise ValueError(f"{label}: owner_response_readback_truth.truth_note is required")


def _require_response_readback_lanes(payload: dict[str, Any], label: str) -> None:
    items = payload.get("response_readback_lanes") or []
    _require_ids(
        items,
        "readback_id",
        {
            "owner_release_response_readback",
            "verifier_response_readback",
            "rollback_owner_response_readback",
            "maintenance_window_response_readback",
            "live_apply_response_readback",
        },
        label,
        "response readback lanes",
    )
    for item in items:
        item_id = item.get("readback_id")
        expected = {
            "current_task_id": "P2-144",
            "target_next_task_id": "P2-145",
            "readback_status": "no_external_response_received",
            "response_received": False,
            "response_accepted": False,
            "response_rejected": False,
            "redacted_payload_ingested": False,
            "runtime_write_allowed": False,
            "telegram_send_allowed": False,
        }
        mismatches = _mismatches(item, expected)
        if mismatches:
            raise ValueError(f"{label}: response readback lane {item_id} mismatch: {mismatches}")
        required_fields = item.get("required_fields") or []
        if not isinstance(required_fields, list) or not required_fields:
            raise ValueError(f"{label}: response readback lane {item_id}.required_fields is required")
        if not item.get("source_lane_id"):
            raise ValueError(f"{label}: response readback lane {item_id}.source_lane_id is required")
        if not item.get("readback_summary"):
            raise ValueError(f"{label}: response readback lane {item_id}.readback_summary is required")
        if not _is_redacted_sha256(item.get("evidence_hash")):
            raise ValueError(f"{label}: response readback lane {item_id}.evidence_hash must be redacted sha256")


def _require_validation_checks(payload: dict[str, Any], label: str) -> None:
    items = payload.get("readback_validation_checks") or []
    _require_count(items, 6, label, "readback validation checks")
    for item in items:
        item_id = item.get("check_id")
        if item.get("status") not in {"waiting_for_owner_response", "not_satisfied", "blocked_by_policy"}:
            raise ValueError(f"{label}: readback validation check {item_id} status is invalid")
        if item.get("runtime_write_allowed") is not False:
            raise ValueError(f"{label}: readback validation check {item_id} must keep runtime_write_allowed=false")
        if not item.get("requirement"):
            raise ValueError(f"{label}: readback validation check {item_id}.requirement is required")


def _require_rejection_guards(payload: dict[str, Any], label: str) -> None:
    items = payload.get("readback_rejection_guards") or []
    _require_count(items, 6, label, "readback rejection guards")
    for item in items:
        item_id = item.get("guard_id")
        if item.get("status") != "active":
            raise ValueError(f"{label}: readback rejection guard {item_id} status must remain active")
        if item.get("runtime_write_allowed") is not False:
            raise ValueError(f"{label}: readback rejection guard {item_id} must keep runtime_write_allowed=false")
        if not item.get("reason"):
            raise ValueError(f"{label}: readback rejection guard {item_id}.reason is required")


def _require_actions(payload: dict[str, Any], label: str) -> None:
    items = payload.get("operator_actions") or []
    _require_count(items, 5, label, "operator actions")
    for item in items:
        item_id = str(item.get("action_id"))
        stale_ids = {"p2_139", "p2_140", "p2_141", "p2_142"}
        if any(stale_id in item_id for stale_id in stale_ids):
            raise ValueError(f"{label}: operator action {item_id} must not point back to stale release gates")
        if item.get("runtime_write_allowed") is not False:
            raise ValueError(f"{label}: operator action {item_id} must keep runtime_write_allowed=false")
        if item.get("status") not in {"ready_for_operator_review", "approval_required"}:
            raise ValueError(f"{label}: operator action {item_id} status is invalid")
        if not item.get("operator_instruction"):
            raise ValueError(f"{label}: operator action {item_id}.operator_instruction is required")


def _require_display_redaction(payload: dict[str, Any], label: str) -> None:
    contract = payload.get("display_redaction_contract") or {}
    expected = {
        "redaction_required": True,
        "raw_prompt_display_allowed": False,
        "private_reasoning_display_allowed": False,
        "secret_value_display_allowed": False,
        "raw_runtime_payload_display_allowed": False,
        "internal_collaboration_content_display_allowed": False,
    }
    mismatches = _mismatches(contract, expected)
    if mismatches:
        raise ValueError(f"{label}: display_redaction_contract mismatch: {mismatches}")
    if not contract.get("frontend_display_policy"):
        raise ValueError(f"{label}: display_redaction_contract.frontend_display_policy is required")


def _require_rollup_consistency(payload: dict[str, Any], label: str) -> None:
    rollups = payload.get("rollups") or {}
    required_owner_field_count = sum(len(item.get("required_fields") or []) for item in payload.get("response_readback_lanes") or [])
    expected = {
        "response_readback_lane_count": len(payload.get("response_readback_lanes") or []),
        "required_owner_field_count": required_owner_field_count,
        "readback_validation_check_count": len(payload.get("readback_validation_checks") or []),
        "readback_rejection_guard_count": len(payload.get("readback_rejection_guards") or []),
        "operator_action_count": len(payload.get("operator_actions") or []),
        "waiting_external_response_count": len(payload.get("response_readback_lanes") or []),
        "no_external_response_received_count": len(payload.get("response_readback_lanes") or []),
        "approval_required_subtotal": 12,
        "blocked_and_critical_subtotal": 12,
    }
    expected.update(_owner_response_zero_counts())
    mismatches = _mismatches(rollups, expected)
    if mismatches:
        raise ValueError(f"{label}: rollups mismatch: {mismatches}")


def _require_no_forbidden_display_terms(payload: Any, label: str) -> None:
    forbidden = {
        "work_window_transcript",
        "internal_collaboration_transcript",
        "raw_prompt",
        "private_reasoning",
        "chain_of_thought",
        "authorization_header",
        "secret_value",
        "工作視窗",
        "內部協作",
        "原始提示詞",
        "私有推理",
        "原始 runtime payload",
        "raw runtime payload",
        "authorization header",
    }
    found = sorted(term for term in forbidden if _contains_term(payload, term))
    if found:
        raise ValueError(f"{label}: forbidden display terms leaked: {found}")


def _contains_term(value: Any, term: str) -> bool:
    if isinstance(value, str):
        return term.lower() in value.lower()
    if isinstance(value, dict):
        return any(_contains_term(child, term) for child in value.values())
    if isinstance(value, list):
        return any(_contains_term(child, term) for child in value)
    return False


def _owner_response_zero_counts() -> dict[str, int]:
    return {
        "owner_response_received_count": 0,
        "owner_response_accepted_count": 0,
        "owner_response_rejected_count": 0,
        "redacted_payload_ingested_count": 0,
        **_zero_count_expectations(),
    }


def _zero_count_expectations() -> dict[str, int]:
    return {
        "owner_release_authorized_count": 0,
        "owner_release_approved_count": 0,
        "owner_review_approved_count": 0,
        "owner_decision_approved_count": 0,
        "verifier_decision_approved_count": 0,
        "maintenance_window_approved_count": 0,
        "rollback_owner_confirmed_count": 0,
        "post_release_verifier_ready_count": 0,
        "final_release_candidate_approved_count": 0,
        "final_release_candidate_pass_count": 0,
        "release_decision_pass_count": 0,
        "release_authorization_granted_count": 0,
        "release_authorization_pass_count": 0,
        "rollback_release_pass_count": 0,
        "live_apply_release_pass_count": 0,
        "writer_apply_count": 0,
        "execution_apply_count": 0,
        "receipt_write_count": 0,
        "reviewer_queue_write_count": 0,
        "gateway_queue_write_count": 0,
        "telegram_send_count": 0,
        "bot_api_call_count": 0,
        "report_receipt_write_count": 0,
        "result_capture_write_count": 0,
        "learning_write_count": 0,
        "playbook_trust_write_count": 0,
        "production_write_count": 0,
        "secret_read_count": 0,
        "destructive_operation_count": 0,
    }


def _require_ids(items: list[dict[str, Any]], field: str, expected_ids: set[str], label: str, group_name: str) -> None:
    actual_ids = {str(item.get(field)) for item in items}
    if actual_ids != expected_ids:
        raise ValueError(f"{label}: {group_name} ids mismatch: expected={sorted(expected_ids)} actual={sorted(actual_ids)}")


def _require_count(items: list[Any], expected: int, label: str, group_name: str) -> None:
    if len(items) != expected:
        raise ValueError(f"{label}: expected {expected} {group_name}, got {len(items)}")


def _is_redacted_sha256(value: Any) -> bool:
    return isinstance(value, str) and re.fullmatch(r"sha256:[0-9a-f]{64}", value) is not None


def _mismatches(payload: dict[str, Any], expected: dict[str, Any]) -> dict[str, dict[str, Any]]:
    return {
        key: {"expected": expected_value, "actual": payload.get(key)}
        for key, expected_value in expected.items()
        if payload.get(key) != expected_value
    }
