"""Validation helpers for user/tacacs_plus - Auto-generated"""

from typing import Any, TypedDict, Literal
from typing_extensions import NotRequired

# Import common validators from central _helpers module
from hfortix_fortios._helpers import (
    validate_enable_disable,
    validate_integer_range,
    validate_string_length,
    validate_port_number,
    validate_ip_address,
    validate_ipv6_address,
    validate_mac_address,
)

# Import central validation functions (avoid duplication across 1,062 files)
from hfortix_fortios._helpers.validation import (
    validate_required_fields as _validate_required_fields,
    validate_enum_field as _validate_enum_field,
    validate_query_parameter as _validate_query_parameter,
)

# ============================================================================
# Required Fields Validation
# Auto-generated from schema
# ============================================================================

# ⚠️  IMPORTANT: FortiOS schemas have known issues with required field marking:

# Do NOT use this list for strict validation - test with the actual FortiOS API!

# Fields marked as required (after filtering false positives)
REQUIRED_FIELDS = [
    "server",  # Primary TACACS+ server CN domain name or IP address.
    "interface",  # Specify outgoing interface to reach server.
]

# Fields with defaults (optional)
FIELDS_WITH_DEFAULTS = {
    "name": "",
    "server": "",
    "secondary-server": "",
    "tertiary-server": "",
    "port": 49,
    "status-ttl": 300,
    "authen-type": "auto",
    "authorization": "disable",
    "source-ip": "",
    "interface-select-method": "auto",
    "interface": "",
    "vrf-select": 0,
}

# ============================================================================
# Deprecated Fields
# Auto-generated from schema - warns users about deprecated fields
# ============================================================================

# Deprecated fields with migration guidance
DEPRECATED_FIELDS = {
}

# ============================================================================
# Field Metadata (Type Information & Descriptions)
# Auto-generated from schema - use for IDE autocomplete and documentation
# ============================================================================

# Field types mapping
FIELD_TYPES = {
    "name": "string",  # TACACS+ server entry name.
    "server": "string",  # Primary TACACS+ server CN domain name or IP address.
    "secondary-server": "string",  # Secondary TACACS+ server CN domain name or IP address.
    "tertiary-server": "string",  # Tertiary TACACS+ server CN domain name or IP address.
    "port": "integer",  # Port number of the TACACS+ server.
    "key": "password",  # Key to access the primary server.
    "secondary-key": "password",  # Key to access the secondary server.
    "tertiary-key": "password",  # Key to access the tertiary server.
    "status-ttl": "integer",  # Time for which server reachability is cached so that when a 
    "authen-type": "option",  # Allowed authentication protocols/methods.
    "authorization": "option",  # Enable/disable TACACS+ authorization.
    "source-ip": "string",  # Source IP address for communications to TACACS+ server.
    "interface-select-method": "option",  # Specify how to select outgoing interface to reach server.
    "interface": "string",  # Specify outgoing interface to reach server.
    "vrf-select": "integer",  # VRF ID used for connection to server.
}

# Field descriptions (help text from FortiOS API)
FIELD_DESCRIPTIONS = {
    "name": "TACACS+ server entry name.",
    "server": "Primary TACACS+ server CN domain name or IP address.",
    "secondary-server": "Secondary TACACS+ server CN domain name or IP address.",
    "tertiary-server": "Tertiary TACACS+ server CN domain name or IP address.",
    "port": "Port number of the TACACS+ server.",
    "key": "Key to access the primary server.",
    "secondary-key": "Key to access the secondary server.",
    "tertiary-key": "Key to access the tertiary server.",
    "status-ttl": "Time for which server reachability is cached so that when a server is unreachable, it will not be retried for at least this period of time (0 = cache disabled, default = 300).",
    "authen-type": "Allowed authentication protocols/methods.",
    "authorization": "Enable/disable TACACS+ authorization.",
    "source-ip": "Source IP address for communications to TACACS+ server.",
    "interface-select-method": "Specify how to select outgoing interface to reach server.",
    "interface": "Specify outgoing interface to reach server.",
    "vrf-select": "VRF ID used for connection to server.",
}

# Field constraints (string lengths, integer ranges)
FIELD_CONSTRAINTS = {
    "name": {"type": "string", "max_length": 35},
    "server": {"type": "string", "max_length": 63},
    "secondary-server": {"type": "string", "max_length": 63},
    "tertiary-server": {"type": "string", "max_length": 63},
    "port": {"type": "integer", "min": 1, "max": 65535},
    "status-ttl": {"type": "integer", "min": 0, "max": 600},
    "source-ip": {"type": "string", "max_length": 63},
    "interface": {"type": "string", "max_length": 15},
    "vrf-select": {"type": "integer", "min": 0, "max": 511},
}

# Nested schemas (for table/list fields with children)
NESTED_SCHEMAS = {
}


# Valid enum values from API documentation
VALID_BODY_AUTHEN_TYPE = [
    "mschap",
    "chap",
    "pap",
    "ascii",
    "auto",
]
VALID_BODY_AUTHORIZATION = [
    "enable",
    "disable",
]
VALID_BODY_INTERFACE_SELECT_METHOD = [
    "auto",
    "sdwan",
    "specify",
]
VALID_QUERY_ACTION = ["default", "schema"]

# ============================================================================
# GET Validation
# ============================================================================


def validate_user_tacacs_plus_get(
    attr: str | None = None,
    filters: dict[str, Any] | None = None,
    **params: Any,
) -> tuple[bool, str | None]:
    """Validate GET request parameters for user/tacacs_plus."""
    # Validate query parameters using central function
    if "action" in params:
        is_valid, error = _validate_query_parameter(
            "action",
            params.get("action"),
            VALID_QUERY_ACTION
        )
        if not is_valid:
            return (False, error)

    return (True, None)


# ============================================================================
# POST Validation
# ============================================================================


def validate_user_tacacs_plus_post(
    payload: dict,
    **params: Any,
) -> tuple[bool, str | None]:
    """Validate POST request to create new user/tacacs_plus object."""
    # Step 1: Validate required fields using central function
    is_valid, error = _validate_required_fields(
        payload,
        REQUIRED_FIELDS,
        FIELD_DESCRIPTIONS
    )
    if not is_valid:
        return (False, error)

    # Step 2: Validate enum values using central function
    if "authen-type" in payload:
        is_valid, error = _validate_enum_field(
            "authen-type",
            payload["authen-type"],
            VALID_BODY_AUTHEN_TYPE,
            FIELD_DESCRIPTIONS
        )
        if not is_valid:
            return (False, error)
    if "authorization" in payload:
        is_valid, error = _validate_enum_field(
            "authorization",
            payload["authorization"],
            VALID_BODY_AUTHORIZATION,
            FIELD_DESCRIPTIONS
        )
        if not is_valid:
            return (False, error)
    if "interface-select-method" in payload:
        is_valid, error = _validate_enum_field(
            "interface-select-method",
            payload["interface-select-method"],
            VALID_BODY_INTERFACE_SELECT_METHOD,
            FIELD_DESCRIPTIONS
        )
        if not is_valid:
            return (False, error)

    return (True, None)


# ============================================================================
# PUT Validation
# ============================================================================


def validate_user_tacacs_plus_put(
    payload: dict,
    **params: Any,
) -> tuple[bool, str | None]:
    """Validate PUT request to update user/tacacs_plus."""
    # Validate enum values using central function
    if "authen-type" in payload:
        is_valid, error = _validate_enum_field(
            "authen-type",
            payload["authen-type"],
            VALID_BODY_AUTHEN_TYPE,
            FIELD_DESCRIPTIONS
        )
        if not is_valid:
            return (False, error)
    if "authorization" in payload:
        is_valid, error = _validate_enum_field(
            "authorization",
            payload["authorization"],
            VALID_BODY_AUTHORIZATION,
            FIELD_DESCRIPTIONS
        )
        if not is_valid:
            return (False, error)
    if "interface-select-method" in payload:
        is_valid, error = _validate_enum_field(
            "interface-select-method",
            payload["interface-select-method"],
            VALID_BODY_INTERFACE_SELECT_METHOD,
            FIELD_DESCRIPTIONS
        )
        if not is_valid:
            return (False, error)

    return (True, None)


# ============================================================================
# Metadata Access Functions
# Imported from central module to avoid duplication across 1,062 files
# Bound to this endpoint's data using functools.partial (saves ~7KB per file)
# ============================================================================

from functools import partial
from hfortix_fortios._helpers.metadata import (
    get_field_description,
    get_field_type,
    get_field_constraints,
    get_field_default,
    get_field_options,
    get_nested_schema,
    get_all_fields,
    get_field_metadata,
    validate_field_value,
)

# Bind module-specific data to central functions using partial application
get_field_description = partial(get_field_description, FIELD_DESCRIPTIONS)
get_field_type = partial(get_field_type, FIELD_TYPES)
get_field_constraints = partial(get_field_constraints, FIELD_CONSTRAINTS)
get_field_default = partial(get_field_default, FIELDS_WITH_DEFAULTS)
get_field_options = partial(get_field_options, globals())
get_nested_schema = partial(get_nested_schema, NESTED_SCHEMAS)
get_all_fields = partial(get_all_fields, FIELD_TYPES)
get_field_metadata = partial(get_field_metadata, FIELD_TYPES, FIELD_DESCRIPTIONS, 
                             FIELD_CONSTRAINTS, FIELDS_WITH_DEFAULTS, REQUIRED_FIELDS,
                             NESTED_SCHEMAS, globals())
validate_field_value = partial(validate_field_value, FIELD_TYPES, FIELD_DESCRIPTIONS,
                               FIELD_CONSTRAINTS, globals())


# ============================================================================
# Schema Information
# Metadata about this endpoint schema
# ============================================================================

SCHEMA_INFO = {
    "endpoint": "user/tacacs_plus",
    "category": "cmdb",
    "api_path": "user/tacacs+",
    "mkey": "name",
    "mkey_type": "string",
    "help": "Configure TACACS+ server entries.",
    "total_fields": 15,
    "required_fields_count": 2,
    "fields_with_defaults_count": 12,
}


def get_schema_info() -> dict[str, Any]:
    """Get information about this endpoint schema."""
    return SCHEMA_INFO.copy()
